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4.16 RECREATION
Would the project:
New
Potentially
Significant
Impact
New
Mitigation is
Required
No New
Impact/No
Impact
Reduced
Impact
a. Would the project increase the use of existing neighborhood and regional parks or other recreational facilities such that substantial physical deterioration of the facility would occur or be accelerated?
b. Does the project include recreational facilities or require the construction or expansion of recreational facilities which might have an adverse physical effect on the environment?
Approved Project Findings: The Approved Project would provide transportation improvements and would not include the development of land uses that would directly or indirectly result in population growth. As such, the 2021 IS/MND determined that the Approved Project would not increase the use of existing parks or recreational facilities. Proposed bicycle and pedestrian improvements would provide enhanced safety and connectivity for existing users along Project roadways, but would not introduce a new SART connection that would increase SART ridership.
Overall, impacts would be less than significant.
While partial closures and/or detours along the SART would be required during construction of the Approved Project, implementation of a TMP would be required in order to notify SART users of such temporary closures and detours and provide appropriate signage (2021 IS/MND Mitigation Measure TR-1). Construction would be short-term and full access would be restored, and the SART facility would be returned to existing conditions once Project construction is complete.
Impacts would be less than significant with mitigation incorporated.
Proposed Modified Project:
(a)-(b) Similar to the Approved Project, the Proposed Modified Project does not propose any land use changes or Project features that would result in population growth. Thus, the Project would not increase the use of the City’s parks and recreational facilities. Similar to the Approved Project, the Proposed Modified Project would provide a beneficial impact by installing bicycle and pedestrian improvements that would enhance safety and connectivity for existing users along Project roadways. The Proposed Modified Project would not include any improvements affecting the SART, and thus would not increase or result in new impacts the SART during Project construction or operation. Impacts would be less than significant, and the level of impact would not substantially increase from that identified in the 2021 IS/MND. No new impacts have been identified and no new mitigation measures are required.
2021 IS/MND Standard Conditions
None.
2021 IS/MND Regulatory Compliance Measures
None.
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2021 IS/MND Mitigation Measures
None.
New Mitigation Measures
No new mitigation measures are required.
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4.17 TRANSPORTATION
Would the project:
New
Potentially
Significant
Impact
New
Mitigation is
Required
No New
Impact/No
Impact
Reduced
Impact
a. Conflict with a program, plan, ordinance or policy addressing the circulation system, including transit, roadway, bicycle, and pedestrian facilities?
b. Conflict or be inconsistent with CEQA Guidelines section 15064.3, subdivision (b)?
c. Substantially increase hazards due to a geometric design feature (e.g., sharp curves or dangerous intersections) or incompatible uses (e.g., farm equipment)?
d. Result in inadequate emergency access?
Approved Project Findings: The 2021 IS/MND determined that the proposed roadway improvements would be consistent with the roadway designations under the City’s General Plan Circulation Element as well as the Orange County Transportation Authority (OCTA) Master Plan of Arterial Highways (MPAH), and would be consistent with the City’s traffic study guidelines for level of service (LOS) intersection performance. While partial closures and/or detours along the SART would be required during construction, implementation of a TMP would be required in order to notify SART users of such temporary closures and detours and provide appropriate signage (2021 IS/MND Mitigation Measure TR-1). Detours and closures would be short-term and full access would be restored and the SART facility would be returned to existing conditions once Project construction is complete. Impacts would be less than significant with mitigation incorporated and the Approved Project would not conflict with any program, plans, ordinances, or policies addressing the circulation system, including transit, bicycle, and pedestrian facilities.
As the City does not have a threshold of significance regarding vehicle miles traveled (VMT) for transportation projects, the Governor’s Office of Planning and Research’s (now referred to as the Governor’s Office of Land Use and Climate Innovation, or LCI) The Technical Advisory on Evaluating Transportation Impacts in CEQA was utilized in the 2021 IS/MND transportation analysis. Accordingly, projects that would not likely lead to a substantial or measurable increase in vehicle travel, and therefore generally should not require an induced travel analysis, include:
Addition of an auxiliary lane of less than one mile in length designed to improve roadway safety
Addition of roadway capacity on local or collector streets provided the project also substantially improves conditions for pedestrians, cyclists, and, if applicable, transit.
The Approved Project was found to substantially conform to the examples of an auxiliary lane less than one mile in length (970 feet) and the addition of roadway capacity (for 400 feet) that also improves conditions for cyclists (addition or extension of two Class I Bike Paths and an improved connection between the SART and Savi Ranch). In addition, it was determined that the Approved
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Project would not lead to a substantial increase in vehicle travel, would not require an induced travel analysis, and would be presumed to have a less than significant transportation impact.
The Approved Project would not introduce geometric design features that would be hazardous or create incompatible uses on-site. Construction of the Approved Project may require temporary lane closures and speed reductions that could result in temporary hazards for the traveling public or affect emergency access and response times on-site and within the Project vicinity. However, 2021 IS/MND Mitigation Measure TRA-1 would require implementation of a TMP, which would include various provisions to ensure continuous and adequate emergency access and response times on-site and within the Project vicinity during the construction process. The TMP would include, but not be limited to, measures such as construction signage, pedestrian protection, limitations on timing for lane closures to avoid peak hours, temporary striping plans, identification of alternate bus stops during potential short-term bus stop closures, construction vehicle routing plans, and the need for a construction flagperson to direct traffic during heavy equipment use.
The Approved Project would improve intersection operations and reduce queuing lengths, which would also facilitate improved emergency response times, resulting in long-term operational benefits. Overall, impacts were determined to be less than significant following implementation of 2021 IS/MND Mitigation Measure TR-1.
Proposed Modified Project:
(a) Within the Proposed Modified Project limits, the OCTA MPAH designates Yorba Linda Boulevard as a Major arterial, Savi Ranch Parkway as a Primary arterial, and Old Canal Road as a Collector; Mirage Street is not identified in the MPAH. Currently, there are no dedicated bicycle facilities along roadways within the Proposed Modified Project Site. The Proposed Modified Project would incorporate additional roadway improvements, including intersection modifications and roadway widening to enhance the circulation system around Savi Ranch. Additionally, the Proposed Modified Project includes a new multi-use path along Savi Ranch Parkway, Mirage Street, and Old Canal Road, thus improving opportunities for active transportation in the Project area and enhancing safety for bicyclists and pedestrians. The proposed roadway improvements would be consistent with the OCTA MPAH and the General Plan Circulation Element, and the proposed multi-use trail improvements would align with the preferred land use plan outlined in the Savi Ranch Vision Plan by providing Class I and Class IV facilities to and within Savi Ranch. Short-term construction activities may require temporary partial lane closures along Project roadways, and temporary construction easements to facilitate the construction of the proposed roadway widening, lane reconfiguration, and multi-use trail improvements; refer to Exhibit 5. However, a TMP would be implemented to reduce construction-related effects (2021 IS/MND Mitigation Measure TR-1); thus, with implementation of 2021 IS/MND Mitigation Measure TR-1, impacts would be reduced to a less than significant level.
Upon completion of the Proposed Modified Project, the roadway improvements would improve the circulation system around Savi Ranch as it would better facilitate site ingress and egress, address operational issues related to queuing, and improve mobility near high-volume freeway ramps and interchanges near the state highway system. Sidewalk improvements would occur along Yorba Linda Boulevard and Mirage Street, providing improved pedestrian circulation in the area.
Additionally, the proposed multi-use trail would provide additional opportunities for alternative modes of transportation, improving overall circulation. As such, with implementation of 2021 IS/MND Mitigation Measure TR-1, the Proposed Modified Project would not conflict with any program, plans, ordinances, or policies addressing the circulation system, including transit, bicycle, and pedestrian facilities. The level of impact would not substantially increase from that identified
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in the 2021 IS/MND. No new impacts have been identified and no new mitigation measures are required.
(b) The Proposed Modified Project would include minor modifications to the Approved Project that would provide enhanced mobility for all modes of transportation within the Project area. The Proposed Modified Project would provide roadway improvements that would improve localized intersection movements providing ingress/egress for Savi Ranch, and bicycle/pedestrian improvements that would provide beneficial impacts related to active transportation. Similar to the findings of the 2021 IS/MND, when combining these project modifications with the Approved Project, the Proposed Modified Project would continue to substantially conform to the LCI’s definition of a project that would not likely lead to a substantial or measurable increase in vehicle travel. Specifically, it would continue to provide the addition of an auxiliary lane of less than one mile in length designed to improve roadway safety, and it would also include the addition of roadway capacity on local or collector streets that would also substantially improve conditions for pedestrians and cyclists. As such, and similar to the Approved Project, the Proposed Modified Project would not lead to a substantial increase in vehicle travel and would be presumed to have a less than significant transportation impact. The level of impact would not substantially increase from that identified in the 2021 IS/MND. No new impacts have been identified and no new mitigation measures are required.
(c)-(d) Similar to the Approved Project, the Proposed Modified Project would require a TMP (2021 IS/MND Mitigation Measure TR-1) during construction in order to reduce impacts related to temporary hazards and emergency services. Once in operation, the Proposed Modified Project would not introduce geometric design features that would be hazardous or create incompatible uses within the Project limits. The Proposed Modified Project would improve intersection operations and increase queuing storage, which could also facilitate improved emergency response times, resulting in long-term operational benefits. Thus, with implementation of 2021 IS/MND Mitigation Measure TR-1, impacts would be less than significant, and the level of impact would not substantially increase from that identified in the 2021 IS/MND. No new impacts have been identified and no new mitigation measures are required.
2021 IS/MND Standard Conditions
None.
2021 IS/MND Regulatory Compliance Measures
None.
2021 IS/MND Mitigation Measures
TR-1 Traffic Management Plan (TMP). Prior to the initiation of construction, the City of Yorba Linda City Engineer shall ensure that a Traffic Management Plan (TMP) has been prepared for the proposed project in coordination with the City of Anaheim City Engineer and the County of Orange County Engineer. The City of Yorba Linda Engineer shall also coordinate with OCFA, Anaheim Fire and Rescue, the City of Anaheim Police Department, and the City of Yorba Linda Police Department for measures related to emergency access. The TMP shall include measures to minimize the potential safety impact during the short-term construction process, when partial lane closures may be required. It shall include measures such as construction signage, detour routes and signage, pedestrian and bicyclist protection, limitations on timing for lane closures to
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avoid peak hours, temporary striping plans, identification of alternate bus stops during potential short-term bus stop closures, construction vehicle routing plans, and the need for a construction flagperson to direct traffic during heavy equipment use. The TMP shall be incorporated into project specifications for verification prior to final plan approval.
New Mitigation Measures
No new mitigation measures are required.
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4.18 TRIBAL CULTURAL RESOURCES
Would the project:
New
Potentially
Significant
Impact
New
Mitigation is
Required
No New
Impact/No
Impact
Reduced
Impact
a. Would the project cause a substantial adverse change in the significance of a tribal cultural resource, defined in Public Resources Code section 21074 as either a site, feature, place, cultural landscape that is geographically defined in terms of the size and scope of the landscape, sacred place, or object with cultural value to a California Native American tribe, and that is:
1) Listed or eligible for listing in the California Register of Historical Resources, or in a local register of historical resources as defined in Public Resources Code section
5020.1(k), or
2) A resource determined by the lead agency, in its discretion and supported by substantial evidence, to be significant pursuant to criteria set forth in subdivision (c) of Public Resources Code Section 5024.1. In applying the criteria set forth in subdivision (c) of Public Resource Code Section 5024.1, the lead agency shall consider the significance of the resource to a California Native American tribe.
Approved Project Findings: The 2021 IS/MND determined that no historic resources listed or eligible for listing in a State or local register of historic resources are located within the Approved Project site. Therefore, no impacts related to historic tribal cultural resources defined in Public Resources Code Section 5020.1(k) would occur in this regard.
The City distributed letters to potentially affected Native American tribes which have cultural or traditional affiliation with the Approved Project site in accordance with Assembly Bill (AB) 52 requirements on April 13, 2020. The tribes were given a total of 53 days to respond and no responses were received. Therefore, no known tribal cultural resources have been identified and no impacts to known tribal cultural resources are anticipated. Nonetheless, 2021 IS/MND Standard Condition SC-CUL-1 would ensure that in the event unknown cultural resources, including archaeological and tribal cultural resources are discovered during ground-disturbing activities, appropriate measures would be taken. Compliance with Section 5097.9 of the California Public Resources Code as required in 2021 IS/MND Regulatory Compliance measure RC-CUL1 would preclude potential impacts to human remains and associated funerary objects. Following compliance with 2021 IS/MND Standard Condition SC-CUL-1 and Regulatory Compliance measure RC-CUL-1, it was determined that Approved Project impacts to tribal cultural resources would be less than significant.
Proposed Modified Project: The following analysis is based on the Archeological Survey Report (ASR) for the Savi Ranch Parkway Widening and Connect Savi Ranch Project. City of Yorba Linda, Orange County, California (ASR), prepared by Cogstone Resource Management, and dated October 2025, that was prepared for the Proposed Modified Project. (a) AB 52 states that prior to the release of a negative declaration, mitigated negative declaration, or environmental impact report for a project, a lead agency shall begin consultation with a California Native American tribe that is traditionally and culturally affiliated with the geographic
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area of the proposed project, if the tribe requested to the lead agency, in writing, to be informed by the lead agency of proposed projects in that geographic area and the tribe requests consultation. As this environmental document (i.e., an Addendum) is not a Negative Declaration, Mitigated Negative Declaration, or Environmental Impact Report, AB 52 consultation was not conducted for the Proposed Modified Project by the City.
However, it should be noted that Native American consultation was conducted for the Proposed Modified Project by the California Department of Transportation, District 12 (Caltrans) through their role as lead agency under the National Environmental Policy Act (NEPA) under Section 106 of the National Historic Preservation Act. As part of this process, which is summarized in the ASR, a Sacred Lands File (SLF) search was requested from the Native American Heritage Commission (NAHC) and was completed with negative results within the Area of Potential Effect (APE) for the Proposed Modified Project. The NAHC provided contact information for 28 Native tribal organizations and individuals that may have more information about the APE. Tribal consultation letters were sent by Caltrans to the NAHC list of tribes requesting information related to cultural resources or heritage sites within the APE. Eight responses, including five requests for consultation and three tribes deferring the project to the local tribes were received.
Based on Caltrans’ tribal consultations, numerous conditions were identified to minimize impacts to potential tribal cultural resources. Due to the presence of precontact cultural resources in proximity to the APE, and given that archeological resource P-30-001067 (CA-ORA-1067) has not been fully tested and has yielded artifacts in previous excavations, in addition to 2021 IS/MND Standard Condition SC-CUL-1, the Proposed Modified Project would incorporate Proposed Modified Project Standard Conditions SC-CUL-2 and SC-CUL-3 during construction. Proposed Modified Project Standard Condition SC-CUL-2 establishes that an Environmentally Sensitive Area (ESA) exists within the APE, and Proposed Modified Project Standard Condition SC-CUL-3 requires that an ESA fence be delineated on Project Plans so that no construction work shall be permitted within the fencing in order to prevent the inadvertent discovery of cultural resources. No impacts to tribal cultural resources are anticipated during operation of the Proposed Modified Project. Upon implementation of 2021 IS/MND Standard Condition SC-CUL-1 and Proposed Modified Project Standard Conditions SC-CUL-2 and SC-CUL-3, impacts would be less than significant, and would not substantially increase from that identified in the 2021 IS/MND. No new impacts have been identified and no new mitigation measures are required. 2021 IS/MND Standard Conditions
Refer to Standard Condition SC-CUL-1.
2021 IS/MND Regulatory Compliance Measures
None.
2021 IS/MND Mitigation Measures
None.
Proposed Modified Project Standard Conditions
Refer to Standard Conditions SC-CUL-2 and SC-CUL-3.
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4.19 UTILITIES AND SERVICE SYSTEMS
Would the project:
New
Potentially
Significant
Impact
New
Mitigation is
Required
No New
Impact/No
Impact
Reduced
Impact
a. Require or result in the relocation or construction of new or expanded water, wastewater treatment or stormwater
drainage, electric power, natural gas, or telecommunications facilities, the construction or relocation of which could cause significant environmental effects?
b. Have sufficient water supplies available to serve the project and reasonably foreseeable future development during
normal, dry, and multiple dry years?
c. Result in a determination by the wastewater treatment provider which serves or may serve the project that it has adequate capacity to serve the project’s projected demand in addition to the provider’s existing commitments?
d Generate solid waste in excess of State or local standards, or in excess of the capacity of local infrastructure, or otherwise impair the attainment of solid waste reduction goals?
e. Comply with federal, State, and local management and reduction statutes and regulations related to solid waste? Approved Project Findings: The 2021 IS/MND determined that water usage on site during both construction and operation of the Approved Project would be negligible and would fall within Yorba Linda Water District’s (YLWD) and the City of Anaheim Public Utilities Department’s existing capacity and available supply. A Final Water Quality Management Plan (WQMP) would be prepared for the Approved Project in compliance with the Orange County Flood Control District (OCFCD) MS4 Permit. Adherence to the Final WQMP, including operational BMPs, would minimize impacts related to surface water runoff. Therefore, the Approved Project would not exceed the capacity of downstream stormwater drainage facilities or cause the expansion of existing facilities. Impacts to stormwater drainage facilities would be less than significant.
Neither construction nor operation of the Approved Project would require additional wastewater, natural gas, electrical, or telecommunication facilities as compared to existing conditions.
Underground utilities, such as water conveyance systems, telecommunication lines, electrical facilities, and natural gas lines, would be protected in place to the extent possible, and would be relocated within the Project limits, if necessary. Relocations would not result in a service disruption and all connections would remain intact. Furthermore, as operation of the Approved Project would not result in additional habitable structures, or other land uses that would generate demand for utilities, the levels of service to existing off-site receivers of the above-mentioned utilities would not be adversely affected.
The 2021 IS/MND concluded that construction of the Approved Project is not anticipated to result in a significant production of solid waste that would exceed the daily available capacity at the Olinda Alpha Landfill; therefore, the Approved Project would not result in an impact related to City, State, or federal statutes and regulations related to solid waste. Additionally, the minimal solid waste produced during construction and maintenance of the Approved Project would not impair the attainment of solid waste reduction goals. Overall, impacts pertaining to utilities and service systems would be less than significant.
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Proposed Modified Project:
(a)-(e) As discussed in Section 4.14, Population and Housing, the Proposed Modified Project would not directly or indirectly result in population growth that could increase demand on utilities and service systems. For utility relocation or modification, coordination with all utility providers would be required in order to prevent disruption of services and to protect-in-place existing lines, to the extent feasible. Similar to the Approved Project, water usage on site during both construction and operation would be negligible; connections to existing water lines would be required for landscape irrigation. The Proposed Modified Project would incorporate operational BMPs per the Final WQMP prepared as part of the OCFCD MS4. Additionally, and similar to the Approved Project, neither construction nor operation of the Approved Project would require additional wastewater, natural gas, electrical, or telecommunication facilities as compared to existing conditions. Further, it is not anticipated that solid waste generation from the Proposed Modified Project would increase significantly compared to the Approved Project; therefore, Olinda Alpha Landfill would have intake capacity and the Proposed Modified Project would not result in an impact related to City, State, or federal statutes and regulations related to solid waste. As such, impacts would be less than significant, and the level of impact would not substantially increase from that identified in the 2021 IS/MND. No new impacts have been identified and no new mitigation measures are required.
2021 IS/MND Standard Conditions
None.
2021 IS/MND Regulatory Compliance Measures
None.
2021 IS/MND Mitigation Measures
None.
New Mitigation Measures
No new mitigation measures are required.
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4.20 WILDFIRE
If located in or near state responsibility areas or lands classified as very high fire hazard severity zones, would the project:
New
Potentially
Significant
Impact
New
Mitigation is
Required
No New
Impact/No
Impact
Reduced
Impact
a. Substantially impair an adopted emergency response plan or emergency evacuation plan?
b. Due to slope, prevailing winds, and other factors, exacerbate wildfire risks, and thereby expose project occupants to, pollutant concentrations from a wildfire or the uncontrolled spread of a wildfire?
c. Require the installation or maintenance of associated infrastructure (such as roads, fuel breaks, emergency water sources, power lines or other utilities) that may exacerbate fire risk or that may result in temporary or ongoing impacts to the environment?
d. Expose people or structures to significant risks, including downslope or downstream flooding or landslides, as a result of runoff, post-fire slope instability, or drainage changes?
Approved Project Findings: The 2021 IS/MND determined that a portion of the Project limits that extend east of Yorba Linda Boulevard along La Palma Avenue is located in a Very High Fire Hazard Severity Zone (VHFHSZ). As part of 2021 IS/MND Mitigation Measure TR-1, the TMP would require that the City coordinate with emergency service providers to ensure evacuation routes would be maintained or detours identified during the construction period of the Approved Project in the event of a wildfire. Operation of the Approved Project would improve traffic operations along Weir Canyon Road, Santa Ana Canyon Road, Yorba Linda Boulevard, and La Palma Avenue. Therefore, no emergency response plans or evacuation routes would be impaired in the long term.
As the Approved Project does not include any habitable structures, implementation of the Approved Project would not expose any occupants to pollutant concentrations from a wildfire or require the installation or maintenance of additional infrastructure that may exacerbate fire risk.
While portions of the Approved Project limits are within a landslide zone, no grading or ground disturbance would occur within these areas; as such no increased risk of downslope or downstream flooding, or landslides as a result of runoff or post-fire slope instability, would occur.
Proposed Modified Project:
(a)-(d) The Proposed Modified Project Site is not located within a VHFHSZ; therefore, no impact would occur in this regard, and the level of impact would not substantially increase from that identified in the 2021 IS/MND. 4 No new impacts have been identified and no new mitigation measures are required.
2021 IS/MND Standard Conditions
None.
4 City of Yorba Linda, Map Yorba Linda Live,
https://webgis.yorbalindaca.gov/portal/home/item.html?id=e4bda1029e5145e09a9713fef1ec4ccf, accessed November 2025.
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2021 IS/MND Regulatory Compliance Measures
None.
2021 IS/MND Mitigation Measures
None.
New Mitigation Measures
No new mitigation measures are required.
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4.21 MANDATORY FINDINGS OF SIGNIFICANCE
Would the project:
New
Potentially
Significant
Impact
New
Mitigation is
Required
No New
Impact/No
Impact
Reduced
Impact
a. Does the project have the potential to substantially degrade the quality of the environment, substantially reduce the habitat of a fish or wildlife species, cause a fish or wildlife population to drop below self-sustaining levels, threaten to eliminate a plant or animal community, substantially reduce the number or restrict the range of a rare or endangered plant or animal or eliminate important examples of the major periods of California history or prehistory?
b. Does the project have impacts that are individually limited, but cumulatively considerable? (“Cumulatively considerable” means that the incremental effects of a project are
considerable when viewed in connection with the effects of past projects, the effects of other current projects, and the effects of probable future projects)?
c. Does the project have environmental effects which will cause substantial adverse effects on human beings, either directly or indirectly?
Approved Project Findings: The 2021 IS/MND determined that, with implementation of 2021 IS/MND Regulatory Compliance Measures RC-BIO-1 through RC-BIO-5, Standard Conditions SC-BIO-1 and SC-BIO-2, and Mitigation Measures BIO-1 through BIO-12 regarding biological resources; 2021 IS/MND Standard Condition SC-CUL-1 and Regulatory Compliance Measure RC-CUL-1 regarding cultural and tribal cultural resources; and 2021 IS/MND Mitigation Measures PAL-1, PAL-2, and PAL-3 regarding paleontological resources, the Approved Project would not eliminate important examples of the major periods of California history or prehistory, and impacts would be less than significant with mitigation incorporated.
In addition to the Standard Conditions, Regulatory Compliance Measures, and Mitigation Measures listed above, the 2021 IS/MND determined that with adherence to all other conditions and measures listed in the 2021 IS/MND, the Approved Project would not result in any significant and unavoidable environmental impacts. These conditions and measures, at the project-level, would reduce the potential for the incremental effects of the Approved Project to be considerable when viewed in connection with the effects of past projects, current projects, or probable future projects as it was determined that no cumulative projects would occur within or adjacent to the Project limits.
Overall, the 2021 IS/MND found that the Approved Project would not have environmental effects which would cause substantial adverse effects on human beings, either directly or indirectly, following conformance with the existing regulatory framework and mitigation measures related to aesthetics, air quality, noise, hazards and hazardous materials, and traffic; rather, as a roadway improvement, Project features would be designed to meet the needs of humans. Impacts would be less than significant.
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Proposed Modified Project:
(a) As analyzed above, implementation of the Proposed Modified Project would not substantially degrade the quality of the environment. As discussed in Section 4.4, Biological Resources, 2021 IS/MND Mitigation Measure BIO-2 would require that the Construction Contractor enforce best management practices (BMPs) to prevent the introduction and spread of invasive species within the Project area during construction activities, while 2021 Standard Conditions SC-WQ-1 and SCWQ-3 would require issuance of a National Pollutant Discharge Elimination System (NPDES) Construction General Permit and preparation/implementation of a Stormwater Pollution Prevention Program (SWPPP) in order to reduce impacts to aquatic resources. Adherence to 2021 IS/MND Mitigation Measure BIO-2 and Standard Conditions SC-WQ-1 and SC-WQ-3 would ensure that construction impacts to the Santa Ana River, and consequently the threatened Santa Ana sucker, would be reduced to less than significant, and the level of impact would not increase from that identified in the 2021 IS/MND. Regarding native birds and raptors within the Project area, 2021 IS/MND Regulatory Compliance Measure RC-BIO-3 would require a pre-construction nesting bird clearance survey prior to the start of construction or ground disturbing activities or removal of any trees, shrubs, or any other potential nesting habitat during implementation of the Proposed Modified Project. Similarly, the Proposed Modified Project would be subject to 2021 IS/MND Regulatory Compliance Measure RC-BIO-4 as it relates to tree replacement and preservation, as well as 2021 IS/MND Standard Condition SC-BIO-1 as it relates to the restoration of temporary impacts to native vegetation. With implementation of 2021 IS/MND Regulatory Compliance Measures RC-BIO-3 and RC-BIO-4, and Standard Condition SC-BIO-1, impacts to birds protected under the Migratory Bird Treaty Act and the California Fish and Game Code §§ 3503, 3503.5 and 3513 would be reduced to less than significant, and the level of impact would not increase from that identified in the 2021 IS/MND. As discussed in Section 4.5, Cultural Resources, a prehistoric archaeological site designated as P-30-001067 (CA-ORA-1067) has been recorded within the Area of Potential Effect (APE) of the Proposed Modified Project; Proposed Modified Project Standard Condition SC-CUL-2 establishes that an Environmentally Sensitive Area (ESA) exists at resource P-30-001067 (CAORA-1067), and Proposed Modified Project Standard Condition SC-CUL-3 would require that an ESA fence be delineated on Project Plans and that no construction work be permitted within the fencing. Additionally, for unanticipated cultural resources discovered outside of the ESA but within the APE, 2021 IS/MND Standard Condition SC-CUL-1 would ensure that for any finds over 50 years, construction work shall be stopped and the resource would be assessed by a professional archaeologist. Further, 2021 IS/MND Regulatory Compliance Measure RC-CUL-1 would be implemented in the event unanticipated human remains are discovered during Project construction.
Following implementation of 2021 IS/MND Standard Condition SC-CUL-1 and Regulatory Compliance Measure RC-CUL-1, as well as Proposed Modified Project Standard Conditions SCCUL-2 and SC-CUL-3, potential impacts to archaeological resources would be reduced to less than significant levels, and the level of impact would not increase from that identified in the 2021 IS/MND.As discussed in Section 4.7, Geology and Soils, 2021 IS/MND Mitigation Measures PAL-1 would require the development of a Paleontological Resources Impact Mitigation Program (PRIMP) by a Society of Vertebrate Paleontology (SVP) paleontologist to protect paleontological resources that may exist within the project limits, as well as procedures for monitoring, fossil preparation and identification, curation into a repository, and preparation of a report at the conclusion of ground disturbance. 2021 IS/MND Mitigation Measures PAL-2 would require that ground disturbance in deposits with high paleontological sensitivity be monitored by a qualified paleontological monitor following a PRIMP; in the event that paleontological resources are encountered when a paleontological monitor is not present, work in the immediate area of the find shall be redirected and the paleontologist shall be contacted to assess the find and determine the appropriate actions. 2021 IS/MND Mitigation Measures PAL-3 would require that the PRIMP results be compiled in a Findings Report. With the implementation of 2021 IS/MND Mitigation Measures PAL-1 through PALPage 269 of 2424 Addendum to the 2021 Initial Study/Mitigated Negative Declaration Savi Ranch Parkway Widening/Connect Savi Ranch Project
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3, potential impacts to paleontological resources would be reduced to less than significant levels, and the level of impact would not increase from that identified in the 2021 IS/MND.
As such, the Proposed Modified Project would not degrade the quality of the environment, substantially reduce the habitat of a fish or wildlife species, cause a fish or wildlife population to drop below self-sustaining levels, threaten to eliminate a plant or animal community, substantially reduce the number or restrict the range of a rare or endangered plant or animal, or eliminate important examples of the major periods of California history or prehistory. No new impacts are identified, and no new mitigation measures are required. (b) The 2021 IS/MND concluded that implementation of the Approved Project would not result in any significant and unavoidable impacts in any environmental categories with implementation of mitigation measures; implementation of mitigation measures at the project-level would reduce the potential for the incremental effects of the Approved Project to be cumulatively considerable when viewed in connection with the effects of past projects, current projects, or probable future projects.
Although the Proposed Modified Project proposes minor design modifications, the Proposed Modified Project would serve the same purpose as the Approved Project (i.e., transportation improvements), consistent with that previously analyzed in the 2021 IS/MND. Therefore, the Proposed Modified Project would not result in any new cumulative impacts not previously identified in the 2021 IS/MND, and the level of impact would not increase from that identified in the 2021 IS/MND.
(c) As demonstrated within the analysis throughout this Addendum, the Proposed Modified Project would not result in any new impacts or substantially increased impacts that would cause substantial adverse effects on human beings. Previous mitigation measures identified in the 2021 IS/MND remain feasible to minimize Project impacts.
2021 IS/MND Standard Conditions
Refer to Standard Conditions SC-BIO-1, SC-CUL-1, SC-WQ-1, and SC-WQ-3. 2021 IS/MND Regulatory Compliance Measures
Refer to Regulatory Compliance Measures RC-BIO-3, RC-BIO-4, and RC-CUL-1. 2021 IS/MND Mitigation Measures
Refer to Mitigation Measures BIO-2, PAL-1, PAL-2, and PAL-3.
Proposed Modified Project Standard Conditions
Refer to Standard Conditions SC-CUL-2 and SC-CUL-3.
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5.0 DETERMINATION/ADDENDUM CONCLUSION
As detailed in the analysis presented above, this Addendum supports the conclusion that the proposed modifications to the Approved Project considered in the 2021 IS/MND constitute minor or technical changes and do not result in any new significant environmental effects or a substantial increase in the severity of previously identified significant effects. No new information has become available and no substantial changes to the circumstances under which the Approved Project was being undertaken since the approval of the 2021 IS/MND has occurred. As identified in the 2021 IS/MND, with implementation of the recommended mitigation measures, the Approved Project would not result in significant environmental impacts. The Proposed Modified Project would not substantially increase the severity of these less than significant effects, nor would they provide new mitigation measures or alternatives that would substantially reduce these impacts.
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6.0 ADDENDUM PREPARATION SOURCES/REFERENCES
California Environmental Protection Agency, Cortese List Data Resources, https://calepa.ca.gov/SiteCleanup/ CorteseList/, accessed on November 14, 2025.
City of Yorba Linda, 2016 Yorba Linda General Plan Draft Environmental Impact Report, May 2016.
City of Yorba Linda, Map Yorba Linda Live,
https://webgis.yorbalindaca.gov/portal/home/item.html?id=e4bda1029e5145e09a9713fef1ec 4ccf, accessed November 2025.
City of Yorba Linda Municipal Code, Ordinance No. 2024-1112, adopted December 3, 2024.
City of Yorba Linda, Yorba Linda Boulevard Widening Improvements Project Initial Study/Mitigated Negative Declaration, January 2021.
Cogstone Resource Management, Archeological Survey Report (ASR) for the Savi Ranch Parkway Widening and Connect Savi Ranch Project. City of Yorba Linda, Orange County, California, October 2025.
Michael Baker International, Natural Environment Study (Minimal Impacts), Savi Ranch Parkway Widening/Connect Savi Ranch Project, Northeast of the intersection of State Route 91 and Yorba Linda Boulevard, Yorba Linda, Orange County, California, November 4, 2025.
Michael Baker International, Phase I Initial Site Assessment (ISA), Savi Ranch Parkway Widening/Connect Savi Ranch Project, Yorba Linda, California, October 2, 2025.
Michael Baker International, Visual Impact Assessment Memorandum Scenic Resource Evaluation, Savi Ranch Parkway Widening/Connect Savi Ranch Project City of Yorba Linda Project Number STPCML-5402(034), May 22, 2025.
Michael Baker International, Water Quality Technical Memorandum Savi Ranch Parkway Widening/Connect Savi Ranch Project City of Yorba Linda, California, July 2025.
Terry A. Hayes Associates Inc. Air Quality Technical Memorandum, Savi Ranch Parkway Widening/Connect Savi Ranch Project, May 20, 2025.
Terry A. Hayes Associates Inc. Noise Technical Memorandum, Savi Ranch Parkway Widening/Connect Savi Ranch Project, July 9, 2025.
Verdantas Inc., Geotechnical Exploration Report, Yorba Linda Boulevard Widening Project, Yorba Linda, California October 18, 2024.
Attachment A Page 273 of 2424
Visual Impact Assessment Memorandum
Scenic Resource Evaluation
Savi Ranch Parkway Widening/Connect Savi Ranch Project
City of Yorba Linda Project Number STPCML-5402(034)
Prepared by: _________________________________ Date:
Cathy Johnson, PLA
Michael Baker International
License #4545
Project Landscape Architect
Approved by: _________________________________Date:
Name XX
License #XX
Caltrans District Landscape Architect
District 12
Statement of Compliance: Produced in compliance with National Environmental Policy Act (NEPA) and California Environmental Quality Act (CEQA) requirements, as appropriate, to meet the level of analysis and documentation that has been determined necessary for this project.
Per Exhibit D, Article XVIII, Section A. (1) of the contract: (c) 2020 California Department of Transportation.
5-22-2025
Visual Impact Assessment Memorandum
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Table of Contents
Introduction ................................................................................................................... 1
1.1 Purpose of Report and Assessment Methodology ............................................... 1
2. Establishment Phase ................................................................................................ 1
2.1 Project Location and Setting ................................................................................ 1
2.2 Project Description............................................................................................... 2
2.3 Description of Area of Visual Effect...................................................................... 5
2.4 Visual Resources and Scenic Resources ............................................................ 6
3. Inventory Phase......................................................................................................... 7
3.1 Description of Landscape Visual Character .............................................................. 7
3.2 Description of Landscape Visual Quality ................................................................... 8
3.3 Viewers ..................................................................................................................... 8
3.4 Viewpoints................................................................................................................. 9
4. Analysis Phase.......................................................................................................... 9
4.1 Evaluation of Visual Impact.................................................................................. 9
5. Conclusions............................................................................................................. 12
6. Resources................................................................................................................ 12 List of Appendices
Appendix A: Scoping Questionnaire
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List of Figures
Figure 1: Site Vicinity
Figure 2: Project Site and AVE
Figure 3: Mirage Street Retaining Wall
Figure 4a: Savi Ranch Parkway Retaining Wall - North
Figure 4b: Savi Ranch Parkway Retaining Wall - South
Figure 5a: Yorba Linda Boulevard Retaining Wall - Intersection Figure 5b: Yorba Linda Boulevard Retaining Wall – Bridge Figure 6: Landscape Plan – Savi Ranch Parkway
Figure 7: Landscape Plan – Savi Ranch Parkway and Mirage Street Figure 8: Landscape Plan – Yorba Linda Boulevard
Figure 9a: Area of Visual Effect
Figure 9b: Existing Conditions Photographs
Figure 9c: Existing Conditions Photographs
List of Acronyms
ADA Americans with Disabilities Act
APN Assessor’s Parcel Numbers
AVE Area of Visual Effect
CEQA California Environmental Quality Act
City City of Yorba Linda
FHWA Federal Highway Administration
General Plan 2016 Yorba Linda General Plan
Handbook Caltrans 2023 VIA Handbook
FHWA Federal Highway Administration
msl Mean Sea Level
NEPA National Environmental Policy Act
SR-91 State Route 91
VIA visual impact assessment
Vision Plan Vision Plan for Savi Ranch
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1 Introduction
1.1 Purpose of Report and Assessment Methodology
The purpose of this visual impact assessment (VIA) memorandum is to document potential visual changes in the Area of Visual Effect (AVE). This memorandum follows the guidance outlined in the publication Guidelines for the Visual Impact Assessment of Highway Projects, published by the Federal Highway Administration (FHWA) in January 2015. The formatting of this template is aligned with the directions and examples included in the Caltrans 2023 VIA Handbook (Handbook), available at: https://dot.ca.gov/- /media/dot-media/programs/design/documents/via-handbook--a11y.pdf. 2 Establishment Phase
2.1 Project Location and Setting
The project location and setting provide the context for determining the type of changes to the existing visual environment. The project site would occur within and surrounding Savi Ranch, a primary job center located in the southeastern portion of the City of Yorba Linda (City), in the County of Orange, California. Topographically, the City consists of gently rolling hills, defined by the Puente Hills in the north and northeast and the Santa Ana River in the south; refer to Figure 1, Site Vicinity. Chino Hills State Park is a dominant feature in the area, and is characterized by steep ridgelines ranging in elevation from approximately 1,400 feet above mean sea level (msl) to 1,670 feet msl.1 Chino Hills State Park also features two designated scenic vistas, Glider Point and San Juan Hill, that afford panoramic views of the City, intermittently obstructed by high‐voltage electrical transmission lines and vegetation.2 In comparison, the area of visual effect (AVE) sits at an elevation ranging from approximately 330 feet to 350 feet msl within the lower-lying river area associated with the Santa Ana River. Chino Hills State Park and the Santa Ana River are visible from the project site. The Featherly Park and Yorba Regional Park are among other notable features in the City, but are not visible from the project site.
Yorba Linda is a predominately suburban, low‐density community. It is primarily residential with large areas of open and recreational space. Commercial areas are concentrated on Imperial Highway and Yorba Linda Boulevard, with light industrial uses clustered in Savi Ranch. As depicted on Figure 2, Project Site and AVE, the AVE is located within Savi Ranch, along Savi Ranch Parkway (between Yorba Linda Boulevard and Mirage Street), along Mirage Street (between Crystal Drive and Old Canal Road), along Old Canal Road (between Crystal Drive and Eastpark Drive), and along Yorba Linda Boulevard (between Savi Ranch Parkway and State Route 91 [SR-91] right-ofway). The AVE is developed with roadway infrastructure, and retail, mixed 1 California State Parks, Chino Hills State Park Road and Trail Management Plan, December 2020. 2 Ibid.
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commercial/office, industrial (biotechnology research and development), and residential uses.
2.2 Project Description
The proposed project would include a range of roadway and multi-use trail improvements along Savi Ranch Parkway, Yorba Linda Boulevard, Mirage Street, and Old Canal Road; refer to and Figure 2, Project Site and AVE. The proposed project is intended to improve circulation within and around Savi Ranch, consistent with the Vision Plan for Savi Ranch (Vision Plan), a 30-year land use and mobility plan adopted by the City in 2015. The following describes in further detail the roadway and multi-use trail improvements associated with the proposed project.
• Savi Ranch Parkway: Roadway improvements along Savi Ranch Parkway would include widening the westbound segment to provide an additional left-turn lane at the Yorba Linda Boulevard intersection, removing the raised median at the intersection of westbound Savi Ranch Parkway and Mirage Street, and restriping Savi Ranch Parkway in both directions to extend signalized turn lanes and eliminate free-turn lanes. The intersections of Savi Ranch Parkway at Yorba Linda Boulevard and Savi Ranch Parkway at Mirage Street would include traffic signal modifications, including relocated traffic signals and signage reflecting the lane reconfigurations. The existing median located in the center of Savi Ranch Parkway would be reconfigured and landscaped. Savi Ranch Parkway would also be improved with a Class I off-street multi-use paved trail that would extend eastbound and continue along southbound Mirage Street. The proposed bikeway would be 12 feet wide with an asphalt concrete surface, and intended for use by bicyclists, and pedestrians (including those in wheelchairs and those with strollers), consistent with both the Vision Plan and 2016 Yorba Linda General Plan (General Plan). Other visual bikeway improvements would include new wayfinding signage. • Yorba Linda Boulevard: Project improvements along Yorba Linda Boulevard would include removal of the free right-turn lane and raised median at the intersection of Savi Ranch Parkway. Improvements would also include the relocation of the Savi Ranch monument sign from the existing median to a new landscaped area at the southeast corner of Yorba Linda Boulevard and Savi Ranch Parkway. Additionally, northbound Yorba Linda Boulevard would be widened on the easterly side, north of the existing bridge overcrossing structure at Old Canal Road, to provide two right-turn lanes while maintaining the existing through lanes. Yorba Linda Boulevard within the project limits would be restriped and appropriate traffic signal lights and signage would be installed at the intersection of Yorba Linda Boulevard and Savi Ranch Parkway to signify lane reconfiguration. • Mirage Street: The project would eliminate the existing southbound yield right-turn at Savi Ranch Parkway. The existing traffic signal and associated signage would be reconstructed at the intersection of Mirage Street and Savi Ranch Parkway.
Lane restriping along Mirage Street would also occur. Improvements along Mirage
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Street would include a new sidewalk on the westerly side of southbound Mirage Street (from Savi Ranch Parkway to the north along existing commercial frontage).
The new sidewalk would include Americans with Disabilities Act (ADA) access ramps and paths of travel. To the south of Savi Ranch Parkway, the westerly side of southbound Mirage Street would be improved with a Class I off-street multi-use paved trail that extends from Savi Ranch Parkway to Old Canal Road. The proposed bikeway would be 12 feet wide with an asphalt concrete surface, and intended for use by bicyclists, and pedestrians (including those in wheelchairs and those with strollers), consistent with both the Vision Plan and General Plan. Other visual bikeway improvements would include new wayfinding signage. • Old Canal Road. The northerly side of westbound Old Canal Road (from Eastpark Drive to Mirage Street) would be improved with a Class IV separated bikeway. The proposed bikeway would be 12 feet wide with an asphalt concrete surface, and include built bollards or concrete medians to protect bicyclists from motor vehicles, consistent with both the Vision Plan and General Plan. Other visual bikeway improvements would include new wayfinding signage.
Retaining Walls
There are several existing retaining walls adjacent to the on-site roadways, primarily within the parking lot perimeter of the commercial uses bound by Yorba Linda Boulevard, Savi Ranch Parkway, Mirage Street, and Old Canal Road. These retaining walls have been integrated into the existing landscaping design within the slight slope from the roadways down to the parking lot. Similar retaining walls have been installed on the north side of Savi Ranch Parkway between the roadway and parking lot to the north.
The proposed project would install/relocate four retaining walls. Retaining wall materials would consist of concrete and timber lagging, and would be backfilled/sloped at the wall face. Architectural treatments would be applied to the wall face, with similar treatments to the existing retaining walls in the site vicinity. The new slopes at the retaining wall face would be sloped to follow the natural grade and landscaped to reduce visibility of the hardscaped wall face surfaces. The following describes in further detail the proposed retaining wall improvements associated with the proposed project. • A new retaining wall along the west side of Mirage Street would have a length of approximately 79 feet and a maximum height of up to approximately eight feet; refer to Figure 3, Mirage Street Retaining Wall.
• An existing retaining wall along the north side of Savi Ranch Parkway would be replaced by a new retaining wall with a length of approximately 472 feet and a maximum height of up to approximately 12 feet; refer to Figure 4a, Savi Ranch Parkway Retaining Wall – North.
• A new retaining wall along the south side of Savi Ranch Parkway would have a length of approximately 300 feet and a maximum height of up to approximately 10 feet; refer to Figure 4b, Savi Ranch Parkway Retaining Wall – South.
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• A new retaining wall along the east side of Yorba Linda Boulevard would have a length of approximately 92 feet and a maximum height of up to approximately nine feet; refer to and to Figure 5a, Yorba Linda Boulevard Retaining Wall – Intersection and Figure 5b, Yorba Linda Boulevard Retaining Wall – Bridge.
Traffic Signals and Street Lighting
The project would require the removal and/or relocation of streetlights along existing roadways; all street lighting removals, relocations, and/or installation would be conducted by Southern California Edison per plans approved by the City. As described above, new illuminated traffic signs would be installed at the intersections of Yorba Linda Boulevard/Savi Ranch Parkway and Savi Ranch Parkway/Mirage Street, similar to existing roadway signage within the AVE.
Nighttime Construction Lighting
The project may utilize nighttime construction activities in order to minimize disruption to transportation operations. If nighttime construction occurs, the project would use necessary temporary lighting fixtures for safety and construction purposes. Such temporary lighting would be directed away from private properties, and contained and directed toward the specific area of construction.
Wayfinding and Signage
A cohesive system of wayfinding signage would be installed in order to provide proper identification of roadway and multi-use trail improvements. The existing Yorba Linda monument sign along the easterly side of Yorba Linda Boulevard, at the bridge over Old Canal Road, would be relocated to slightly south, in a new landscaped right-of-way just south of the bridge. The sign would match the existing sign, which is approximately 13 feet, nine inches long, six feet tall, and three feet, three inches wide, and reads, “Welcome to Yorba Linda Land of Gracious Living,” with a mountain graphic. The existing Savi Ranch monument sign, which is located at the median at Savi Ranch Parkway and Yorba Linda Boulevard, would be relocated to a new landscaped right-of-way at the new southeast corner of Savi Ranch Parkway and Yorba Linda Boulevard. The sign would match the existing sign, which is approximately 21 feet, eight inches long, 17 feet, two inches tall and four feet, two inches wide, and reads, “Savi Ranch.” Roadway striping, pavement markings, and raised pavement markers would be designed per Caltrans Standard Specifications, as well as Orange County standards. Traffic sign dimensions, colors, and lettering would conform to the California Manual on Uniform Traffic Control Devices. All traffic signals would conform to the current City and State standards, as well as Caltrans Standard Specifications.
Landscaping and Irrigation
Vegetation clearing and grubbing would be required for roadway and multi-use trail improvements, including select tree removal along the north and south sides of Savi Ranch Parkway, along the west side of Mirage Street, and along the east side of Yorba
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Linda Boulevard. Tree removal permits would be acquired per City of Yorba Linda Municipal Code Section 16.08.030, Permits for Removal Required, and tree replacement would occur in accordance with the regulations set forth by City Council Policy E-3, City Tree Removal and Replacement, which permits the City to require a one-to-one replacement ratio for street trees removed due to risk management. For trees removed along Savi Ranch Parkway due to convenience, the City Council policy further permits the City to require replacement of up to three trees for every large tree removed, up to two trees for every medium tree removed, and up to one tree for every small tree removed. The project proposes landscaping improvements within the modified Savi Ranch Parkway median, along the south side of Savi Ranch Parkway, at the southeast corner of Savi Ranch Parkway and Yorba Linda Boulevard, along the west sides of Crystal Drive and Mirage Street, and along the east side of Yorba Linda Boulevard; refer to Figure 6, Landscape Plan – Savi Ranch Parkway, Figure 7, Landscape Plan – Savi Ranch Parkway and Mirage Street, and Figure 8, Landscape Plan – Yorba Linda Boulevard.
Shrub types would include little John dwarf bottlebrush, little rev flax lily, atlas mairei, new gold latana, pine muhly, evergreen fountain grass, flower carpet white rose, and Cleveland sage, and groundcover would include Pacific mist manzanita. Crape myrtle trees would be planted at the northwest corner of Savi Ranch Parkway and Crystal Drive.
Irrigation would be provided by lateral sprinklers, tree drip water bubblers, a root water system for shrubs, and subsurface inline drip, all connected to existing water lines.
2.3 Description of Area of Visual Effect
The AVE is generally limited to the immediate vicinity of proposed improvements as a result of existing topography, mature trees, and existing buildings; refer to Figure 2. The AVE is primarily developed with urban/suburban buildings, including retail, mixed commercial/office, industrial (biotechnology research and development), and residential development. Non-residential buildings are permitted a maximum height of six stories, but existing structures generally range in height from one to three stories. Commercial, retail, and office uses have more variation in building massing and height, while industrial uses are designed in a more uniform box style. Residential uses along Old Canal Road are condominiums and live-work spaces, which are permitted a maximum height of six stories, but existing structures generally range in height from three to four stories depending on massing.
3 Spaces between these uses are improved with mature street trees, and landscaped slopes and medians. The AVE ranges in elevation from approximately 330 to 350 feet msl. The AVE is also fully developed with roadway infrastructure, including traffic lights and wayfinding signs, as well as street lights, sidewalks, fencing, a bridge structure, monument signs, parking lots, and retaining walls; refer to Figure 9a, Area of Visual Effect, Figure 9b, Existing Conditions Photographs and Figure 9c, Existing Conditions Photographs. The Anaheim city limits are adjacent to the AVE’s western boundary along Yorba Linda Boulevard. Bright colors, electric lighting, and moving vehicles dominate the visual environment along Yorba Linda Boulevard within the 3 City of Yorba Linda, Vision Plan for Savi Ranch, Figure 5: Preferred Land Use Vision Plan, July 2015.
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AVE. The collector roadway serving Savi Ranch within the AVE (including along Savi Ranch Parkway, Mirage Street, and Old Canal Road) have less roadway traffic and overhead lighting, and uses operate during typical business hours (for the industrial areas) or are residential more residential in character near the southeastern portion of the AVE.
Surrounding geographic features that are considered visible visual resources within portions of the AVE include Chino Hills State Park to the north and northeast, Deer Canyon Park to the west, and the Santa Ana Mountains to the south and southeast. Views of these features are partially obstructed from view throughout most segments of the AVE by existing intervening buildings, topography, and/or mature trees. Chino Hills State Park is partially visible feature from northern views in the AVE; however, this ridgeline is not visually prominent, compared to other areas of the City.
Trees and vegetation located along property lines, the roadway right-of-way, and landscaped medians comprise most of the natural visual elements within the AVE. While the Santa Ana River is located just north of the AVE, the river is not readily visible, other than from northern views along Yorba Linda Boulevard. The AVE is dominated by mature trees, variations in vegetated slopes, and themed mixed-use development within Savi Ranch.
Northbound views along Yorba Linda Boulevard and eastbound along Savi Ranch Parkway within the AVE consist of urban development, with distant views of rolling hills affiliated with the Chino Hills State Park. Westbound views along Savi Ranch Parkway within the project corridor consist of urban development, with distant views of Deer Canyon Park. More distant views of the bridge over the Santa Ana River are afforded from Yorba Linda Boulevard in the northwestern portion of the AVE. Southbound views along Mirage Street within the AVE consist of urban development, with limited views of the Santa Ana Mountains; the foothills of this mountain range are located approximately two miles southeast and are largely obstructed by existing urban development, highway infrastructure, hillside topography, and mature trees. Views in either direction along Old Canal Road within the project corridor are at a lower elevation than the adjacent hillside to the south, and are surrounded by urban development; the SR-91 overpass bridge structure at Old Canal Road is visible from the western limits of the Old Canal Road segment.
2.4 Visual Resources and Scenic Resources
According to Caltrans’ California Scenic Highway System Map, officially designated State scenic highways do not occur within the AVE.
4 However, the nearest eligible segment of
a scenic highway is State Route 91 (SR-91), which is located 0.1-mile south of the AVE; 4 California Department of Transportation, California Scenic Highway System Map, https://www.arcgis.com/apps/webappviewer/index.html?id=465dfd3d807c46cc8e8057116f1aacaa, accessed May 5, 2025.
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it should be noted that SR-91 is officially designated approximately 1.22 miles to the west of the overpass at Yorba Linda Boulevard. Proposed improvements would be visible from SR-91 given the highway’s elevation above the AVE; however, only those improvements along Yorba Linda Boulevard would be visible due to intervening structures throughout the majority of the AVE.
The AVE provides distant views of rolling hills associated with Chino Hills State Park to the north, northeast, and east, limited views of Deer Canyon Park to the west, and more remote, obstructed views of the Santa Ana Mountains to the southeast. Of these natural landscapes, only Chino Hills State Park is a City-designated scenic resource. However, the General Plan does not designate specific view corridors. 5 3 Inventory Phase
3.1 Description of Landscape Visual Character
The AVE is predominately situated among suburban development, including retail, mixed commercial/office, industrial (biotechnology research and development), and residential uses, as well as roadway infrastructure. The visual character is generally defined by stand-alone, one- to four-story buildings and condominiums. Commercial, retail, and office uses have more variation in building massing and height, while industrial uses are designed in a more uniform box style. The condominiums range in height from three to four stories depending on building massing. Buildings typically have a tan, stucco finish, with some incorporation of brick or grey stone, and low-pitched clay tile or flat rooftops.
The architectural style ranges from modern to Spanish Revival. The AVE also includes mature street trees and ornamental landscapes that provide texture and color contrast within the AVE between the ornamental vegetation and hardscape features. On-site varying topography and distant views to Chino Hills State Park to the north, northeast, and east, limited views of Deer Canyon Park to the west, and more limited views of the Santa Ana Mountains to the south and southeast provide variation in visible lines throughout the AVE. These ridgelines are generally uniform in color and texture and provide visual diversity to views in the AVE.
Changes to the visual character due to project construction would be temporary and short-term (ceasing upon completion of construction). The proposed lane realignments and widening, as well as relocation of the monument sign would improve visibility for drivers. The project would relocated traffic signals, street lights, and signage appropriately. These features would be similar in form, profile, line, color, and texture to existing roadway infrastructure throughout the AVE. No new overhead utilities are proposed.
The proposed project would install/relocate four retaining walls; refer to Section 2.2, Project Description, as well as Figure 3 through Figure 5b. Retaining walls would range 5 City of Yorba Linda, 2016 Yorba Linda General Plan, Conservation Element, adopted October 2016.
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in height (with a maximum height of eight to twelve feet), and would range from 79 to 472 feet in length. Proposed retaining walls would follow the natural slope of the land and incorporate landscaping in order to screen hardscape wall faces with new landscaping; refer to Figure 3 through Figure 8. Proposed retaining walls would be similar in character to existing retaining walls within and surrounding the AVE.
Overall, resource change would be low, given the existing development patterns in the area. The proposed roadway improvements would mostly result in similar conditions concerning colors, texture, scale, diversity, and continuity as the existing built-out character of the surrounding area. Views of the surrounding natural landscape would not be diminished due to project features. For this reason, project features would appear compatible with the visual character experienced of the project corridor. Accordingly, the proposed project would result in a low change to the visual character experienced in the AVE.
3.2 Description of Landscape Visual Quality
Due to existing topography, development, and mature trees within the AVE, views of surrounding ridgelines are obstructed to varying degrees. Notwithstanding limited views of ridgelines and the Santa Ana River, as well as the existing built environment result in a moderate visual quality in the AVE. Existing development in Savi Rach is unified through in architectural treatment and landscaping consistent with the Vision Plan, which increases overall landscape quality. While the employment center land use pattern is consistent. Such consistencies reduce encroaching features of development and increases visual intactness of views in the AVE.
The visual quality experienced within the AVE would not be substantially reduced as a result of the proposed project. The project would relocate the Savi Ranch monument sign, remove of trees, and install/relocated retaining walls in the AVE. Tree removal would be conducted in accordance with the Yorba Linda Municipal Code Section 16.08.030 and City Council Policy E-3. Proposed landscaping would be installed in order to enhance the visual quality experienced in the public right-of-way, decreasing encroaching features in the AVE. Landscape improvements and sidewalk and multi-use trail improvements would bring connectivity to the pedestrian experience, and roadway reconfiguration would improve overall mobility, consistent with the Vision Plan. It is acknowledged that the proposed retaining walls would be an encroaching feature. However, the retaining walls would be integrated into the sloped landscaping design, would be similar to other retaining wall features in the vicinity of the AVE, and would not be readily visible at greater distances. Proposed roadway and multi-use trail infrastructure, such as traffic lights and wayfinding signage, would be similar to existing conditions. Accordingly, the proposed project would result in a moderately low resource change to visual quality.
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3.3 Viewers
Neighbors (people with views to the transportation project), travelers (people with views from the transportation project), and viewpoints will not be affected by the proposed project.
Neighbors are generally considered to be engaged in the surrounding visual environment.
Residential uses within the AVE are limited to those along Old Canal Road (in the eastern portion of the AVE), would be considered to have a high sensitivity to visual changes.
These portions of the AVE would include multi-use trail improvements with associated Class IV bikeway barriers separating the roadway and trail, as well as wayfinding signage.
Given the nature of these visual changes, it is anticipated that viewer response to these changes would be low.
Neighbors associated with non-residential uses within the AVE would be expected to have a moderate to moderate low viewer sensitivity. Proposed project features would be similar in character/quality to the existing roadway infrastructure in the AVE. As discussed above, the overall project changes are anticipated to be moderately low. Thus, overall viewer response for non-residential neighbors in the AVE would be low.
For travelers in the AVE, the overall viewer sensitivity for motorists, bicyclists, and pedestrians along the project roadways is considered moderate to due to existing visual resources in the general area. Proposed project features would be similar in character/quality to the existing roadway infrastructure in the AVE. motorists within the AVE would experience these project changes in a short-term duration, whereas bicyclists and pedestrian would have short- to moderate-duration of views in the AVE. As such, travelers are expected to have a low to moderate low viewer response to project changes.
3.4 Viewpoints
Viewpoints can be vistas, open landscape views, ocean views, views of important mountains, views of historic or attractive buildings, rock outcrops, heritage trees, tree groves etc. The importance of each viewpoint is determined by the level of scenic resource designation, the distance of the scenic or visual resource, and the visual quality of the scenic or visual resource. There are no vistas, open landscape views, ocean views, views of important mountains, views of historic or attractive buildings, rock outcrops, heritage trees, tree groves within the AVE. As such, there are no viewpoints within the AVE.
4 Analysis Phase
4.1 Evaluation of Visual Impact
The project proposes roadway and multi-use trail improvements within and surrounding Savi Ranch, specifically along Yorba Linda Boulevard, Savi Ranch Parkway, Mirage Street, and Old Canal Road. Visible features of the project would include relocated traffic signals, street lights, landscaping, retaining walls as well as multi-use trail barriers and
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wayfinding signage. These features would be similar to existing roadway infrastructure in the AVE and would be consistent with the Vision Plan for Savi Ranch. Therefore, these project features would not decrease the intactness, unity, or vividness of the AVE.
Although new retaining walls would increase visible hardscape, the project proposes architectural treatments, similar to those associated with existing walls, as well as manufactured slopes and ornamental landscaping, which would reduce encroaching features and increase vividness and unity experienced in the AVE. Widened roadways would also include new multi-use trail, buffer features, and new landscaping to unify the project’s features with the existing visual character and quality present in Savi Ranch.
None of the project features would result in substantial view blockage to visual resources seen throughout the AVE. Based on the neighbor and traveler viewers in the AVE, viewer response to the proposed project features are expected to be moderate low to low.
Overall, the visual impact of the project would be moderately beneficial to bicyclists and pedestrians in the AVE and would result in moderately low resultant visual impacts. With regards to the CEQA Checklist Aesthetics assessments:
a) The proposed project would not have a substantial adverse effect on a scenic vista.
Although limited views of the Chino Hills State Park are afforded in the AVE, these views are not designated as scenic views or vistas nor situated in a scenic view corridor or stationary public view that affords expansive views to this feature. b) The AVE is not located within an official, or eligible, State scenic highway. 6 The
nearest eligible scenic highway to the proposed improvements is SR-91, located
0.10-mile to the south; SR-91 has an elevation approximately 30 to 40 higher than the AVE and no proposed features would be visible from these segments of State highway. It should be noted that a second segment of SR-91, approximately 1.22 miles to the west of the overpass at Yorba Linda Boulevard, is an officially designated State Scenic Highway. This officially designated segment of SR-91 does not afford views of the project site nor proposed project features. Further, implementation of the proposed project would not result in the damage of identified scenic resources within the viewshed of these segments of SR-91. c) As a project located in an urbanized area, the proposed project would be designed in conformance with local and regional objectives and policies intended to maintain visual character/quality during operation. Specifically, roadway intersection improvements under the proposed project are included in the Yorba Linda Boulevard Widening Improvements Project, which is a project under the City of Yorba Linda’s Capital Improvement Program. Additionally, the proposed roadway improvements are consistent with the Orange County Transportation Authority’s Master Plan of Arterial Highways and the General Plan Circulation Element. 6 California Department of Transportation, California Scenic Highway System Map, https://www.arcgis.com/apps/webappviewer/index.html?id=465dfd3d807c46cc8e8057116f1aacaa, accessed May 5, 2025.
Visual Impact Assessment Memorandum for Savi Ranch Parkway Widening/Connect Savi Ranch Project May 2025
Draft
11 | Page
Further, the proposed multi-use trail improvements align with the preferred land use plan outlined in the Vision Plan by providing Class I and Class IV facilities to and within Savi Ranch.
Roadway striping, pavement markings, and raised pavement markers would be designed per Caltrans Standard Specifications, as well as Orange County standards. Traffic sign dimensions, colors, and lettering would conform to the California Manual on Uniform Traffic Control Devices. All traffic signals would conform to the current City and State standards, as well as Caltrans Standard Specifications.
Proposed landscaping, sidewalks, and the multi-use trail would be consistent with General Plan Land Use Element Policy LU-4.2, which encourages the promotion of an attractive streetscape and public right-of-way. As detailed herein, no adverse impacts on existing natural landscapes, including the ridgelines of Chino Hills State Park and the Santa Ana River would occur; as such the project would be consistent with General Plan Land Use Element Policies LU-9.1 and LU-9.3. A landscaped median would be provided along Yorba Linda Boulevard, a Primary arterial, consistent with General Plan Circulation Element Policy CR-4.1, and landscaped right-of-way would be installed consistent with General Plan Circulation Element Policy CR-4.2
Tree and vegetation removal would occur in accordance with the regulations set forth by the City of Yorba Linda Municipal Code Section 16.08.030 and City Council Policy E-3, which permits the City to require a one-to-one replacement ratio for street trees removed due to risk management. For trees removed along Savi Ranch Parkway due to convenience, the City Council policy further permits the City to require replacement of up to three trees for every large tree removed, up to two trees for every medium tree removed, and up to one tree for every small tree removed. All landscaping improvements would be approved by the City of Yorba Linda Department of Public Works engineer. By providing landscaped pedestrian and multi-use trail improvements, the project would improve connectivity between uses within Savi Ranch and enhance linkages and mobility, as envisioned for the area in the Vision Plan. As such, the proposed changes to character/quality would result in moderately low visual impacts.
a) New sources of light or glare which could adversely affect day or nighttime views in the area would be minimal. Existing lighting sources within the project area include traffic lights, street lighting, and vehicle lighting along project roadways and intersections, as well as interior lighting and exterior security lighting associated with nearby Savi Ranch employment center uses. Existing streetlights would be relocated as needed. However, the project would involve installation of new or relocated illuminated traffic signals, street lights, and a monument sign, which would be conducted in coordination with the City Traffic Engineer and in accordance with Chapter 10.12, Traffic Control Devices, of the City of Yorba Linda Municipal Code. Overall, proposed lighting features would appear similar in
Visual Impact Assessment Memorandum for Savi Ranch Parkway Widening/Connect Savi Ranch Project May 2025
Draft
12 | Page
character to the existing monument signage and street lighting features present throughout the AVE.
The proposed project could require nighttime construction activities which could potentially result in light impacts on nearby motorists traveling along the project site. For potential nighttime construction activities, necessary temporary lighting fixtures would be used for safety and construction purposes. Such lighting fixtures would be directed away from private properties, and contained and directed toward the specific area of construction. With implementation of these project features, appropriate lighting controls would reduce resultant light and glare spillage. Such activities would not result in impacts to sensitive residential uses. The nearest residential uses within the AVE are limited to the condominiums at the southern corner of Old Canal Road and Eastpark Drive, where project activities would be multi-use trail improvements, which would not require nighttime construction. As such, road widening activities would not occur near residential uses, and residents in the AVE would not experience an adverse impact related to nighttime construction lighting. Additionally, the project area contains existing sources of light (i.e., vehicle headlights, streetlights, building lights, etc.). Overall, potential visual impacts during construction are considered to be moderate-low. 5 Conclusions
The proposed project would change the AVE by modifying travel lanes and associated signage and signal/lighting fixtures, installing new multi-use trail facilities, removing trees, incorporating new landscaping, and installing new retaining walls consistent with the area.
The proposed project would result in a low resource change to visual character and visual quality, compared to the existing conditions. Viewer response for neighbors and travelers would be moderate to moderate low. Overall, implementation of the proposed project would have a moderate low visual impact.
6 Resources
California Department of Transportation, California Scenic Highway System Map, https://www.arcgis.com/apps/webappviewer/index.html?id=465dfd3d807c46cc8e805 7116f1aacaa, accessed May 5, 2025.
California Department of Transportation, Visual Impact Assessment Handbook, August 2023.
California State Parks, Chino Hills State Park Road and Trail Management Plan, December 2020.
City of Yorba Linda, 2016 Yorba Linda General Plan, adopted October 2016.
City of Yorba Linda, 2016 Yorba Linda General Plan, Exhibit LU-3: Land Use Map, October 2016.
Visual Impact Assessment Memorandum for Savi Ranch Parkway Widening/Connect Savi Ranch Project May 2025
Draft
13 | Page
City of Yorba Linda, City Council Policy E3, City Tree Removal and Replacement, adopted June 2, 2020.
City of Yorba Linda, City of Yorba Linda Municipal Code, Section 16.08.030, Permits for Removal Required, through Ordinance No. 2024-1112, adopted December 3, 2024.
City of Yorba Linda, Vision Plan for Savi Ranch, July 2015.
Federal Highway Administration, Visual Impact Assessment for Highway Projects, January 2015.
U.S. Department of the Interior, U.S. Geological Survey, Black Star Canyon Quadrangle, California, 7.5-Minute Series, 2022.
U.S. Department of the Interior, U.S. Geological Survey, Prado Dam Quadrangle, California, 7.5-Minute Series, 2022.
FIGURES
Historical Topo Map
page
SITE NAME:
ADDRESS:
CLIENT:
This report includes information from the
following map sheet(s).
-
W E
SW S SE
NW N NE
2022
0 Miles 0.25 0.5 1 1.5
SAVI RANCH PROJECT
Old Canal Road/Mirage Street
Yorba Linda, CA 92887
Michael Baker International
TP, Black Star Canyon, 2022, 7.5-minute
NE, Prado Dam, 2022, 7.5-minute
SW, Orange, 2022, 7.5-minute
NW, Yorba Linda, 2022, 7.5-minute
7974180 4 8
Figure 1
NOT TO SCALE
05/2025 • JN 204674
Project Site
SAVI RANCH PARKWAY WIDENING/CONNECT SAVI RANCH PROJECT
VIA MEMORANDUM
Site Vicinity
SAVI RANCH PARKWAY WIDENING/CONNECT SAVI RANCH PROJECT
VIA MEMORANDUM
Figure 2
Project Site and AVE
E CRYSTAL DR
SANTA ANA RIVER
PULLMAN ST
SAVI RANCH PKWY
OLD CANAL RD
EASTPARK DR
OAKCREST CR
RIVERSIDE FWY
YORBA LINDA BLVDYORBA LINDA BLVD
SANTA ANA RIVERSANTA ANA RIVER
LA PALMA AVELA PALMA AVE
MIRAGE STMIRAGE ST
MULTI-USE TRAIL
AREA OF VISUAL EFFECT (AVE)
ROADWAY IMPROVEMENTS
05/2025 • JN 204674
NOT TO SCALE
Source: Google Earth Pro, May 2025
SAVI RANCH PARKWAY WIDENING/CONNECT SAVI RANCH PROJECT
VIA MEMORANDUM
Figure 3
Mirage Street Retaining Wall 05/2025 • JN 204674
NOT TO SCALE
Source: Mark Thomas, May 2025
TOP OF WALL
Elev 343.04 TOP OF WALL
Elev 343.36
S27°59'41"E 36+00 37+00
36+31 S27°59'41"E 37+00 37+10
37+10.00 "MIRAGE RT RET WALL" LOL
51.00' Rt "CL MIRAGE ST" 37+10.00
END MIRAGE RT RET WALL
END CABLE RAILING
36+31.00 "MIRAGE RT RET WALL" LOL
51.00' Rt "CL MIRAGE ST" 36+31.00
BEGIN MIRAGE RT RET WALL
BEGIN CABLE RAILING
REVISIONS CITY OF YORBA LINDA No. BY DESCRIPTION ACCPT'D BY DATE
SAVI RANCH PARKWAY WIDENING
CADD PROJECT FILE NAME:
TIME: DATE:
MIRAGE_RET WALL.DWG
DATE
UNDER THE SUPERVISION OF:
DATE:
DATE:
DATE:
CHECKED BY:
DRAWN BY:
DESIGNED BY:
PLANS PREPARED BY:
IRVINE, CA 92606
2121 ALTON PKWY SUITE 210
(949) 477-9000
10/11/23
11:08:11 AM 2024-02-21
J:\Yorba Linda-22-00135 Yorba & Savi Ranch Widen\CADD\Structures\Sheets\Savi Ranch\Mirage_Ret Wall.dwg
CITY OF YORBA LINDA
REVIEWED BY THE DEPARTMENT OF PUBLIC WORKS. THIS PLAN IS SIGNED BY THE CITY ENGINEER FOR SCOPE AND
CONFORMANCE TO CITY STANDARDS, CITY REQUIREMENTS, CITY CODES, REGULATORY AND OTHER GENERAL ENGINEERING REQUIREMENTS ONLY. THE CITY ENGINEER IS NOT RESPONSIBLE FOR DESIGN. ASSUMPTIONS, OR ACCURACY.
REVIEWED BY: RECOMMENDED BY:
PLAN REVIEW ENGINEER
NAME:
COMPANY
RICK YEE
PRINCIPAL CIVIL ENGINEER
SOILS REVIEW ENGINEER
NAME:
COMPANY:
JAMIE LAI
CITY ENGINEER /PUBLIC WORKS DIRECTOR
REC: 65296
ACCEPTED BY:
DATE DATE
DATE DATE
S. VARELA
V. DOMINGUEZ
-
STATE OF CALIFORNIA
REGISTERED PROFESSIONAL ENGINEER
No. S7078
STRUCTURAL
Exp. 12/31/24
FONTECHA
VARELA
SEBASTIAN
10/11/23
10/11/23
BASIS OF BEARINGS:
THE BEARINGS SHOWN HEREON ARE BASED ON THE GRID BEARING N18°15'13”E BETWEEN O.C.S. HORIZONTAL CONTROL STATION GPS NO. 3266 AND GPS NO. 5198 PER RECORDS ON FILE IN THE OFFICE OF ORANGE COUNTY SURVEYOR.
BENCH MARK:
DESCRIBED BY OCS 2003 - FOUND 3 3\4" OCS ALUMINUM BENCHMARK DISK STAMPED "2J-55-83", SET IN THE NORTHEASTERLY CORNER OF A 4 FT. BY 7.5 FT. CONCRETE CATCH BASIN. MONUMENT IS LOCATED ALONG THE NORTHERLY SIDE OF HIDDEN HILLS DRIVE/ESPARANZA, 0.25 MILES
NORTHEASTERLY ALONG HIDDEN HILLS FROM THE CENTERLINE OF NEW RIVER DRIVE, 14.4 FT. EASTERLY OF A FIRE HYDRANT AND 35 FT.
NORTHERLY OF THE CENTERLINE OF HIDDEN HILLS. MONUMENT IS SET LEVEL WITH THE TOP OF THE CATCH BASIN.
NAVD88 ELEVATION: 393.976, LEVELED IN 2006.
95% DESIGN
NOT FOR
CONSTRUCTION
DWG SHEET OF 52
CITY OF ANAHEIM PERMIT NO. RCP 2023-21200
TYPICAL SECTION 3/8" = 1'-0"
PLAN
1" = 10'
ELEVATION HORIZ: 1" = 10'
B11-47
BOTTOM OF WALL
NOTE:
THE CONTRACTOR SHALL VERIFY ALL
CONTROLLING FIELD DIMENSIONS BEFORE
ORDERING OR FABRICATING ANY MATERIAL.
TO OLD CANAL RD
TO SAVI RANCH PKWY
"MIRAGE ST RET WALL" LOL
Approx OG=FG
AT RW LOL
WEEP HOLE
DRILLED HOLE
BOTTOM OF WALL =
BOTTOM OF LAGGING
AND CIP Conc
STEEL SOLDIER PILE
TIMBER LAGGING
TOP OF WALL
"MIRAGE ST RET WALL" LOL
CABLE
RAILING2'-0" Min
ARCHITECTURAL
TREATMENT
1'-0"
2"
TOP OF WALL
DATUM ELEV = 310
WEAKENED PLANE
AT 24' Max, Typ
B0-3
3-2
Approx OG AT RW LOL
* SLOPE
(Max HEIGHT = 8'-0") END WALL
37+10.00
BEGIN WALL
36+31.00
GENERAL PLAN MIRAGE STREET RETAINING WALL
MIRAGE STREET 10" CIP Conc
79'-0"
SOLDIER PILE WALL
"CL MIRAGE ST"
51'-0"
FG AT BACK OF WALL,
SEE ROADWAY PLANS
"CL MIRAGE ST"
FG AT BACK OF WALL,
SEE ROADWAY PLANS CABLE
RAILING, Typ
B11-47
TOP OF CURB
VERT: 1" = 5'
FG AT FACE, 2:1 Max
1'-0"
GEOCOMPOSITE DRAIN
PILE TIP ELEV
RW-2 28
LIMITS OF PAYMENT FOR DRILLED HOLE
LIMITS OF STEEL SOLDIER PILE
DESIGN HEIGHT
LIMITS OF CONCRETE
BACKFILL
(SOLDIER PILE WALL)
LIMITS OF LEAN
CONCRETE
BACKFILL
1 2 3
4 5 6 7 8 9 10
SAVI RANCH PARKWAY WIDENING/CONNECT SAVI RANCH PROJECT
VIA MEMORANDUM
Figure 4a
Savi Ranch Parkway Retaining Wall - North 05/2025 • JN 204674
NOT TO SCALE
Source: Mark Thomas, May 2025
15+80.39± 4.82'± Lt
END Exist RET WALL
12+72.17± 10.54± Lt
BEGIN Exist RET WALL
11+70.00 "SR LT RET WALL" LOL
64.00' Lt "CL SAVI RANCH PKWY" 11+70.00
BEGIN SR LT RET WALL
BEGIN CABLE RAILING
12+00
13+00
14+00
12+00
13+00
14+00
15+00
16+00
N53°55'38"E
N61°10'45"E
N68°40'05"E
N53°43'36"E
N71°22'07"E 12+43.76 PI
12+49.90 PI
12+95.82 PI
13+01.22 PI
13+07.60 PI
13+12.99 PI 14+95.24 PI 15+45.76 PI
14+98.40 PI 15+04.72 PI
15+07.89 PI 12+07.85 BC
12+62.07 BC
12+31.57 EC
12+87.86 EC
13+19.34 PI
12+00
13+00
14+00 15+00 16+00
16+42.10 "SR LT RET WALL" LOL
57.13' Lt "CL SAVI RANCH PKWY" 16+24.98
END SR LT RET WALL
END CABLE RAILING
12+00 13+00 14+00 15+00 16+00 16+42
TOP OF WALL
Elev 342.00
TOP OF WALL
Elev 346.53
B11-47
SAVI RANCH PKWY
R = 307.00'
= 4°47'20"
T = 12.84'
L = 25.66'
"SR RT RET WALL" LOL
NOTE:
THE CONTRACTOR SHALL VERIFY ALL
CONTROLLING FIELD DIMENSIONS BEFORE
ORDERING OR FABRICATING ANY MATERIAL.
TO MIRAGE ST
TO YORBA LINDA BLVD
"SR LT RET WALL" LOL
Exist LIGHT TO BE
RELOCATED
Exist RET WALL TO
BE REMOVED
TOP OF WALL
CABLE
RAILING
10" CIP Conc
1'-0"
2"
DATUM ELEV = 305
* SLOPE
BEGIN WALL (Max HEIGHT = 12'-0")
11+70.00
GENERAL PLAN SAVI RANCH LEFT RETAINING WALL
REVISIONS CITY OF YORBA LINDA No. BY DESCRIPTION ACCPT'D BY DATE
SAVI RANCH PARKWAY WIDENING
CADD PROJECT FILE NAME:
TIME: DATE:
SR_RW1_LEFT SIDE.DWG
DATE
UNDER THE SUPERVISION OF:
DATE:
DATE:
DATE:
CHECKED BY:
DRAWN BY:
DESIGNED BY:
PLANS PREPARED BY:
IRVINE, CA 92606
2121 ALTON PKWY SUITE 210
(949) 477-9000
10/11/23
11:10:22 AM 2024-02-21
J:\Yorba Linda-22-00135 Yorba & Savi Ranch Widen\CADD\Structures\Sheets\Savi Ranch\SR_RW1_Left Side.dwg
CITY OF YORBA LINDA
REVIEWED BY THE DEPARTMENT OF PUBLIC WORKS. THIS PLAN IS SIGNED BY THE CITY ENGINEER FOR SCOPE AND
CONFORMANCE TO CITY STANDARDS, CITY REQUIREMENTS, CITY CODES, REGULATORY AND OTHER GENERAL ENGINEERING REQUIREMENTS ONLY. THE CITY ENGINEER IS NOT RESPONSIBLE FOR DESIGN. ASSUMPTIONS, OR ACCURACY.
REVIEWED BY: RECOMMENDED BY:
PLAN REVIEW ENGINEER
NAME:
COMPANY
RICK YEE
PRINCIPAL CIVIL ENGINEER
SOILS REVIEW ENGINEER
NAME:
COMPANY:
JAMIE LAI
CITY ENGINEER /PUBLIC WORKS DIRECTOR
REC: 65296
ACCEPTED BY:
DATE DATE
DATE DATE
S. VARELA
V. DOMINGUEZ
-
STATE OF CALIFORNIA
REGISTERED PROFESSIONAL ENGINEER
No. S7078
STRUCTURAL
Exp. 12/31/24
FONTECHA
VARELA
SEBASTIAN
10/11/23
10/11/23
BASIS OF BEARINGS:
THE BEARINGS SHOWN HEREON ARE BASED ON THE GRID BEARING N18°15'13”E BETWEEN O.C.S. HORIZONTAL CONTROL STATION GPS NO. 3266 AND GPS NO. 5198 PER RECORDS ON FILE IN THE OFFICE OF ORANGE COUNTY SURVEYOR.
BENCH MARK:
DESCRIBED BY OCS 2003 - FOUND 3 3\4" OCS ALUMINUM BENCHMARK DISK STAMPED "2J-55-83", SET IN THE NORTHEASTERLY CORNER OF A 4 FT. BY 7.5 FT. CONCRETE CATCH BASIN. MONUMENT IS LOCATED ALONG THE NORTHERLY SIDE OF HIDDEN HILLS DRIVE/ESPARANZA, 0.25 MILES
NORTHEASTERLY ALONG HIDDEN HILLS FROM THE CENTERLINE OF NEW RIVER DRIVE, 14.4 FT. EASTERLY OF A FIRE HYDRANT AND 35 FT.
NORTHERLY OF THE CENTERLINE OF HIDDEN HILLS. MONUMENT IS SET LEVEL WITH THE TOP OF THE CATCH BASIN.
NAVD88 ELEVATION: 393.976, LEVELED IN 2006.
95% DESIGN
NOT FOR
CONSTRUCTION
DWG SHEET OF 52
CITY OF ANAHEIM PERMIT NO. RCP 2023-21200DESIGN HEIGHT
2'-0"
Min
BOTTOM OF WALL
TOP OF WALL
WEAKENED PLANE
AT 24' Max, Typ 3-2 Approx OG AT RW LOL
FG AT BACK OF WALL,
SEE ROADWAY PLANS
B0-3 B11-47
END WALL
16+42.10 CABLE
RAILING, Typ Exp Jt AT 96' Max,
Typ (OMIT WATERSTOP)
B3-5
"SR LT RET WALL" LOL
R = 307.00'
= 5°13'54"
T = 14.03'
L = 28.03'
"CL SAVI RANCH PKWY"
"SR LT RET WALL" LOL
VARIES
"CL SAVI RANCH PKWY"
Approx OG
AT RW LOL
DRILLED HOLE
STEEL SOLDIER PILE
TIMBER LAGGING
PILE TIP ELEV
BOTTOM OF WALL =
BOTTOM OF LAGGING
AND CIP Conc
WEEP HOLE
ARCHITECTURAL
TREATMENT
GEOCOMPOSITE DRAIN
POLE, SEE
ROADWAY PLANS
Exist 24" RCP
FG AT BACK OF WALL,
SEE ROADWAY PLANS
TOP OF CURB PROPOSED
SIDEWALK
FG AT FACE, 2:1 Max
1'-0"
TYPICAL SECTION 3/8" = 1'-0"
PLAN
1" = 20'
DEVELOPED MIRRORED ELEVATION HORIZ: 1" = 10'
VERT: 1" = 5'
RW-4 30
472'-11
4"
SOLDIER PILE WALL
LIMITS OF PAYMENT FOR DRILLED HOLE
LIMITS OF STEEL SOLDIER PILE
LIMITS OF LEAN
CONCRETE BACKFILL
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48
LIMITS OF CONCRETE
BACKFILL
(SOLDIER PILE WALL)
SAVI RANCH PARKWAY WIDENING/CONNECT SAVI RANCH PROJECT
VIA MEMORANDUM
Figure 4b
Savi Ranch Parkway Retaining Wall - South 05/2025 • JN 204674
NOT TO SCALE
Source: Mark Thomas, May 2025
N52°47'36"E
N71°23'27"E
BEGIN Exist RET WALL
11+77.72± 76.32'± Rt
END Exist RET WALL
14+28.37± 58.18'± Rt
N71°22'07"E
14+87.00 "SR Rt Ret Wall" LOL
51.09' Rt "CL SAVI RANCH PKWY" 15+02.27
END SR RT RET WALL
END CABLE RAILING
12+65.53 BC 13+21.68 EC
13+19.34 PI
12+00
13+00
14+00
15+00
16+00
12+00
13+00
14+00 15+00 16+00
11+87 12+00
13+00
14+00
11+87.00 "SR RT RET WALL" LOL
47.57' Rt "CL SAVI RANCH PKWY" 11+87.00
BEGIN SR RT RET WALL
BEGIN CABLE RAILING
12+00 13+00 14+00 14+87
TOP OF WALL
Elev 343.01
SAVI RANCH PKWY
REVISIONS CITY OF YORBA LINDA No. BY DESCRIPTION ACCPT'D BY DATE
SAVI RANCH PARKWAY WIDENING
CADD PROJECT FILE NAME:
TIME: DATE:
SR_RW2_RIGHT SIDE.DWG
DATE
UNDER THE SUPERVISION OF:
DATE:
DATE:
DATE:
CHECKED BY:
DRAWN BY:
DESIGNED BY:
PLANS PREPARED BY:
IRVINE, CA 92606
2121 ALTON PKWY SUITE 210
(949) 477-9000
10/11/23
11:12:43 AM 2024-02-21
J:\Yorba Linda-22-00135 Yorba & Savi Ranch Widen\CADD\Structures\Sheets\Savi Ranch\SR_RW2_Right Side.dwg
CITY OF YORBA LINDA
REVIEWED BY THE DEPARTMENT OF PUBLIC WORKS. THIS PLAN IS SIGNED BY THE CITY ENGINEER FOR SCOPE AND
CONFORMANCE TO CITY STANDARDS, CITY REQUIREMENTS, CITY CODES, REGULATORY AND OTHER GENERAL ENGINEERING REQUIREMENTS ONLY. THE CITY ENGINEER IS NOT RESPONSIBLE FOR DESIGN. ASSUMPTIONS, OR ACCURACY.
REVIEWED BY: RECOMMENDED BY:
PLAN REVIEW ENGINEER
NAME:
COMPANY
RICK YEE
PRINCIPAL CIVIL ENGINEER
SOILS REVIEW ENGINEER
NAME:
COMPANY:
JAMIE LAI
CITY ENGINEER /PUBLIC WORKS DIRECTOR
REC: 65296
ACCEPTED BY:
DATE DATE
DATE DATE
S. VARELA
V. DOMINGUEZ
-
STATE OF CALIFORNIA
REGISTERED PROFESSIONAL ENGINEER
No. S7078
STRUCTURAL
Exp. 12/31/24
FONTECHA
VARELA
SEBASTIAN
10/11/23
10/11/23
BASIS OF BEARINGS:
THE BEARINGS SHOWN HEREON ARE BASED ON THE GRID BEARING N18°15'13”E BETWEEN O.C.S. HORIZONTAL CONTROL STATION GPS NO. 3266 AND GPS NO. 5198 PER RECORDS ON FILE IN THE OFFICE OF ORANGE COUNTY SURVEYOR.
BENCH MARK:
DESCRIBED BY OCS 2003 - FOUND 3 3\4" OCS ALUMINUM BENCHMARK DISK STAMPED "2J-55-83", SET IN THE NORTHEASTERLY CORNER OF A 4 FT. BY 7.5 FT. CONCRETE CATCH BASIN. MONUMENT IS LOCATED ALONG THE NORTHERLY SIDE OF HIDDEN HILLS DRIVE/ESPARANZA, 0.25 MILES
NORTHEASTERLY ALONG HIDDEN HILLS FROM THE CENTERLINE OF NEW RIVER DRIVE, 14.4 FT. EASTERLY OF A FIRE HYDRANT AND 35 FT.
NORTHERLY OF THE CENTERLINE OF HIDDEN HILLS. MONUMENT IS SET LEVEL WITH THE TOP OF THE CATCH BASIN.
NAVD88 ELEVATION: 393.976, LEVELED IN 2006.
95% DESIGN
NOT FOR
CONSTRUCTION
DWG SHEET OF 52
CITY OF ANAHEIM PERMIT NO. RCP 2023-21200
GENERAL PLAN SAVI RANCH RIGHT RETAINING WALL
"SR LT RET WALL" LOL
"SR RT RET WALL" LOL
TO MIRAGE ST
TO YORBA LINDA BLVD
NOTE:
THE CONTRACTOR SHALL VERIFY ALL
CONTROLLING FIELD DIMENSIONS BEFORE
ORDERING OR FABRICATING ANY MATERIAL.
DATUM ELEV = 300
* SLOPE
END WALL
14+87.00
BEGIN WALL
11+87.00
Exist 42" SEWER
300'-0"
SOLDIER PILE WALL
(Max HEIGHT = 10'-0")
Exist 24" RCP SD TO BE
PROTECTED IN PLACE,
INVERT ELEV 321.22 ±
BOTTOM OF WALL
TOP OF WALL
WEAKENED PLANE
AT 24' Max, Typ 3-2
Approx OG AT RW LOL
FG AT BACK OF WALL,
SEE ROADWAY PLANS
CABLE
RAILING, Typ
Exp Jt AT 96' Max,
Typ (OMIT WATERSTOP)
B3-5
B0-3 B11-47
R = 99.00'
= 17°25'50"
T = 15.21'
L = 30.18'
Exist LIGHT TO
BE RELOCATED
Exist 24" RCP
Exist RET WALL TO
BE REMOVED
"SR RT RET WALL" LOL
Exist CATCH BASIN
PROTECT IN PLACE
Exist LIGHT TO
BE RELOCATED
"CL SAVI RANCH PKWY"
FG AT FACE, 2:1 Max
TOP OF CURB
PLAN
1" = 20'
DEVELOPED ELEVATION HORIZ: 1" = 10'
VERT: 1" = 5'
RW-6 32
1 "SR RT RET WALL" LOL 2'-0" Min
DESIGN HEIGHT
10" CIP Conc
1'-0"
2"
Approx OG
AT RW LOL
DRILLED HOLE
STEEL SOLDIER PILE
TIMBER LAGGING
TOP OF WALL
CABLE
RAILING
ARCHITECTURAL
TREATMENT
VARIES
FG AT BACK OF WALL,
SEE ROADWAY PLANS
"CL SAVI RANCH PKWY"
WEEP
HOLE
1'-0"
TYPICAL SECTION 3/8" = 1'-0"
GEOCOMPOSITE DRAIN
BOTTOM OF WALL =
BOTTOM OF LAGGING
AND CIP Conc
PILE TIP ELEV
LIMITS OF STEEL SOLDIER PILE
LIMITS OF PAYMENT FOR DRILLED HOLE
LIMITS OF LEAN
CONCRETE
BACKFILL
LIMITS OF CONCRETE
BACKFILL
(SOLDIER PILE WALL)
B11-47
2 3 4 5 6 7 8 9
10 11 12 13 14 15 16 17 18
19 20 21 22 23 24 25 26 27 28 29 30 31
SAVI RANCH PARKWAY WIDENING/CONNECT SAVI RANCH PROJECT
VIA MEMORANDUM
Figure 5a
Yorba Linda Boulevard Retaining Wall - Intersection 05/2025 • JN 204674
NOT TO SCALE
Source: Mark Thomas, May 2025
74+00
75+00
76+00 77+00
74+64.14 "YL LT RET WALL " LOL
77.77' Lt "CL YORBA LINDA BLVD" 75+06.00
BEGIN YL LT RET WALL
BEGIN CABLE RAILING
75+56.58 "YL LT RET WALL " LOL
67.30' Lt "CL YORBA LINDA BLVD" 75+93.41
END YL LT RET WALL
END CABLE RAILING
74+64 75+00
75+57
75+50.40 PI
75+36.78 BC
74+73.95 BC
75+47.42 EC
75+06.00 EC N40°00'23"W
N25°41'13"W
74+64 75+00 75+57
TOP OF WALL
Elev 349.40
TOP OF WALL
Elev 348.27
SAVI RANCH PKWY
"YL LT RET WALL" LOL
R = 149.29'
= 12°17'49"
T = 16.08'
L = 32.04'
NOTE:
THE CONTRACTOR SHALL VERIFY ALL
CONTROLLING FIELD DIMENSIONS BEFORE
ORDERING OR FABRICATING ANY MATERIAL.
TO SANTA ANA CANYON RD
TO LA PALMA AVE
"YL LT RET WALL" LOL
DATUM ELEV = 315
GENERAL PLAN YORBA LINDA LEFT RETAINING WALL
YORBA LINDA BLVD
REVISIONS CITY OF YORBA LINDA No. BY DESCRIPTION ACCPT'D BY DATE
SAVI RANCH PARKWAY WIDENING
CADD PROJECT FILE NAME:
TIME: DATE:
YORBA LINDA_RET WALL.DWG
DATE
UNDER THE SUPERVISION OF:
DATE:
DATE:
DATE:
CHECKED BY:
DRAWN BY:
DESIGNED BY:
PLANS PREPARED BY:
IRVINE, CA 92606
2121 ALTON PKWY SUITE 210
(949) 477-9000
10/11/23
11:14:48 AM 2024-02-21
J:\Yorba Linda-22-00135 Yorba & Savi Ranch Widen\CADD\Structures\Sheets\Savi Ranch\Yorba Linda_Ret Wall.dwg
CITY OF YORBA LINDA
REVIEWED BY THE DEPARTMENT OF PUBLIC WORKS. THIS PLAN IS SIGNED BY THE CITY ENGINEER FOR SCOPE AND
CONFORMANCE TO CITY STANDARDS, CITY REQUIREMENTS, CITY CODES, REGULATORY AND OTHER GENERAL ENGINEERING REQUIREMENTS ONLY. THE CITY ENGINEER IS NOT RESPONSIBLE FOR DESIGN. ASSUMPTIONS, OR ACCURACY.
REVIEWED BY: RECOMMENDED BY:
PLAN REVIEW ENGINEER
NAME:
COMPANY
RICK YEE
PRINCIPAL CIVIL ENGINEER
SOILS REVIEW ENGINEER
NAME:
COMPANY:
JAMIE LAI
CITY ENGINEER /PUBLIC WORKS DIRECTOR
REC: 65296
ACCEPTED BY:
DATE DATE
DATE DATE
S. VARELA
V. DOMINGUEZ
-
STATE OF CALIFORNIA
REGISTERED PROFESSIONAL ENGINEER
No. S7078
STRUCTURAL
Exp. 12/31/24
FONTECHA
VARELA
SEBASTIAN
10/11/23
10/11/23
BASIS OF BEARINGS:
THE BEARINGS SHOWN HEREON ARE BASED ON THE GRID BEARING N18°15'13”E BETWEEN O.C.S. HORIZONTAL CONTROL STATION GPS NO. 3266 AND GPS NO. 5198 PER RECORDS ON FILE IN THE OFFICE OF ORANGE COUNTY SURVEYOR.
BENCH MARK:
DESCRIBED BY OCS 2003 - FOUND 3 3\4" OCS ALUMINUM BENCHMARK DISK STAMPED "2J-55-83", SET IN THE NORTHEASTERLY CORNER OF A 4 FT. BY 7.5 FT. CONCRETE CATCH BASIN. MONUMENT IS LOCATED ALONG THE NORTHERLY SIDE OF HIDDEN HILLS DRIVE/ESPARANZA, 0.25 MILES
NORTHEASTERLY ALONG HIDDEN HILLS FROM THE CENTERLINE OF NEW RIVER DRIVE, 14.4 FT. EASTERLY OF A FIRE HYDRANT AND 35 FT.
NORTHERLY OF THE CENTERLINE OF HIDDEN HILLS. MONUMENT IS SET LEVEL WITH THE TOP OF THE CATCH BASIN.
NAVD88 ELEVATION: 393.976, LEVELED IN 2006.
95% DESIGN
NOT FOR
CONSTRUCTION
DWG SHEET OF 52
CITY OF ANAHEIM PERMIT NO. RCP 2023-21200
"CL YORBA LINDA BLVD"
TOP OF WALL
CABLE
RAILING
10" CIP Conc
1'-0"
2"
DESIGN HEIGHT
2'-0"
Min
"YL LT RET WALL" LOL
VARIES
"CL YORBA LINDA BLVD"
FG AT BACK OF WALL,
SEE ROADWAY PLANS
Approx OG=FG
AT RW LOL
DRILLED HOLE
STEEL SOLDIER PILE
TIMBER LAGGING
PILE TIP ELEV
BOTTOM OF WALL =
BOTTOM OF LAGGING
AND CIP Conc
ARCHITECTURAL
TREATMENT
GEOCOMPOSITE DRAIN
B11-47
END WALL
75+56.58
BEGIN WALL
74+64.14
92'-51
4"
SOLDIER PILE WALL
(Max HEIGHT = 9'-0")
CABLE
RAILING, Typ
B11-47
R = 164.32'
= 3°46'46"
T = 5.32'
L = 10.64'
"CL YORBA LINDA BLVD" LINE
R = 1600.00'
= 44°06'56"
T = 1231.94'
L = 648.32'
BOTTOM OF WALL
WEAKENED PLANE
AT 24' Max, Typ 3-2
Approx OG AT RW LOL
* SLOPE
FG AT BACK OF WALL,
SEE ROADWAY PLANS
B0-3
SIGN, SEE
ROADWAY PLANS
TOP OF WALL
OLD CANAL RD
TOP OF CURB
PROPOSED
SIDEWALK
WEEP HOLE
FG AT FACE, 2:1 Max
1'-0"
TYPICAL SECTION 3/8" = 1'-0"
PLAN
1" = 20'
DEVELOPED MIRRORED ELEVATION HORIZ: 1" = 10'
VERT: 1" = 5'
RW-8 34
LIMITS OF STEEL SOLDIER PILE
LIMITS OF CONCRETE
LIMITS OF PAYMENT FOR DRILLED HOLE
BACKFILL
(SOLDIER PILE WALL)
LIMITS OF LEAN
CONCRETE
BACKFILL
1 2
3 4 5 6 7
8 9
10
SAVI RANCH PARKWAY WIDENING/CONNECT SAVI RANCH PROJECT
VIA MEMORANDUM
Figure 5b
Yorba Linda Boulevard Retaining Wall – Bridge 05/2025 • JN 204674
NOT TO SCALE
Source: Mark Thomas, May 2025
TOP OF WALL
Elev 351.16
TOP OF WALL
Elev 351.81
30.22'
0+48
0+00
0+25.64 PI
0+00.00 "COYL Sign RW " LOL
68.01' Lt "CL Yorba Linda Blvd" 76+79.09
BEGIN COYL SIGN RW
0+48.00 "COYL SIGN RW " LOL
70.35' Lt "CL YORBA LINDA BLVD" 77+11.63
END COYL SIGN RW S77°05'06"E
S12°54'54"W
REVISIONS CITY OF YORBA LINDA No. BY DESCRIPTION ACCPT'D BY DATE
SAVI RANCH PARKWAY WIDENING
CADD PROJECT FILE NAME:
TIME: DATE:
SR_MONUMENT SIGN V-WALL.DWG
DATE
UNDER THE SUPERVISION OF:
DATE:
DATE:
DATE:
CHECKED BY:
DRAWN BY:
DESIGNED BY:
PLANS PREPARED BY:
IRVINE, CA 92606
2121 ALTON PKWY SUITE 210
(949) 477-9000
10/11/23
11:17:59 AM 2024-02-21
J:\Yorba Linda-22-00135 Yorba & Savi Ranch Widen\CADD\Structures\Sheets\Savi Ranch\SR_Monument Sign V-Wall.dwg
CITY OF YORBA LINDA
REVIEWED BY THE DEPARTMENT OF PUBLIC WORKS. THIS PLAN IS SIGNED BY THE CITY ENGINEER FOR SCOPE AND
CONFORMANCE TO CITY STANDARDS, CITY REQUIREMENTS, CITY CODES, REGULATORY AND OTHER GENERAL ENGINEERING REQUIREMENTS ONLY. THE CITY ENGINEER IS NOT RESPONSIBLE FOR DESIGN. ASSUMPTIONS, OR ACCURACY.
REVIEWED BY: RECOMMENDED BY:
PLAN REVIEW ENGINEER
NAME:
COMPANY
RICK YEE
PRINCIPAL CIVIL ENGINEER
SOILS REVIEW ENGINEER
NAME:
COMPANY:
JAMIE LAI
CITY ENGINEER /PUBLIC WORKS DIRECTOR
REC: 65296
ACCEPTED BY:
DATE DATE
DATE DATE
S. VARELA
V. DOMINGUEZ
-
STATE OF CALIFORNIA
REGISTERED PROFESSIONAL ENGINEER
No. S7078
STRUCTURAL
Exp. 12/31/24
FONTECHA
VARELA
SEBASTIAN
10/11/23
10/11/23
BASIS OF BEARINGS:
THE BEARINGS SHOWN HEREON ARE BASED ON THE GRID BEARING N18°15'13”E BETWEEN O.C.S. HORIZONTAL CONTROL STATION GPS NO. 3266 AND GPS NO. 5198 PER RECORDS ON FILE IN THE OFFICE OF ORANGE COUNTY SURVEYOR.
BENCH MARK:
DESCRIBED BY OCS 2003 - FOUND 3 3\4" OCS ALUMINUM BENCHMARK DISK STAMPED "2J-55-83", SET IN THE NORTHEASTERLY CORNER OF A 4 FT. BY 7.5 FT. CONCRETE CATCH BASIN. MONUMENT IS LOCATED ALONG THE NORTHERLY SIDE OF HIDDEN HILLS DRIVE/ESPARANZA, 0.25 MILES
NORTHEASTERLY ALONG HIDDEN HILLS FROM THE CENTERLINE OF NEW RIVER DRIVE, 14.4 FT. EASTERLY OF A FIRE HYDRANT AND 35 FT.
NORTHERLY OF THE CENTERLINE OF HIDDEN HILLS. MONUMENT IS SET LEVEL WITH THE TOP OF THE CATCH BASIN.
NAVD88 ELEVATION: 393.976, LEVELED IN 2006.
95% DESIGN
NOT FOR
CONSTRUCTION
DWG SHEET OF 52
CITY OF ANAHEIM PERMIT NO. RCP 2023-21200
TYPICAL SECTION 3/8" = 1'-0"
PLAN
1" = 10'
ELEVATION HORIZ: 1" = 10'
BOTTOM OF WALL
NOTE:
THE CONTRACTOR SHALL VERIFY ALL
CONTROLLING FIELD DIMENSIONS BEFORE
ORDERING OR FABRICATING ANY MATERIAL.
TO SAVI RANCH PKWY
"COYL SIGN RW" LOL
Approx OG=FG
AT RW LOL
WEEP
HOLE
DRILLED HOLE
STEEL SOLDIER PILE
TIMBER LAGGING
TOP OF WALL
ARCHITECTURAL
TREATMENT
TOP OF WALL
DATUM ELEV = 310
WEAKENED PLANE
AT 24' Max, Typ
B0-3
3-2
Approx OG AT RW LOL
* SLOPE
(Max HEIGHT = 8'-0")
END WALL
0+48.00
BEGIN WALL
0+00.00
GENERAL PLAN MONUMENT SIGN RETAINING WALL
YORBA LINDA BLVD
VARIES
FG AT BACK OF WALL,
SEE ROADWAY PLANS
"CL YORBA LINDA BLVD"
FG AT BACK OF WALL,
SEE ROADWAY PLANS
NEW CITY OF YORBA LINDA
ENTRY MONUMENT SIGN
VERT: 1" = 5'
FG AT FACE, 2:1 Max
GEOCOMPOSITE DRAIN
PILE TIP ELEV
BOTTOM OF WALL =
BOTTOM OF LAGGING
2'-0"
Min
AND CIP Conc
DESIGN HEIGHT
1'-0"
1'-0"
2"
"COYL SIGN RW" LOL
10" CIP Conc
* SLOPE
48'-0"
SOLDIER PILE WALL
RW-10 36
LIMITS OF PAYMENT FOR
DRILLED HOLE
LIMITS OF STEEL SOLDIER PILE
LIMITS OF CONCRETE
BACKFILL
(SOLDIER PILE WALL)
LIMITS OF LEAN
CONCRETE
BACKFILL
1 2
3 4
5 6
7
SAVI RANCH PARKWAY WIDENING/CONNECT SAVI RANCH PROJECT
VIA MEMORANDUM
Figure 6
Landscape Plan – Savi Ranch Parkway 05/2025 • JN 204674
NOT TO SCALE
Source: Mark Thomas, May 2025
PLANTING LEGEND
SYMBOL/ABBREV BOTANICAL NAME COMMON NAME WATER
USE SIZE SPACING
TREES
LAG NAT LAGERSTROEMIA
'NATCHEZ'
'NATCHEZ' CRAPE
MYRTLE
(MULTI-TRUNK)
MODERATE 24"
BOX PER PLAN
EXISTING TREE
SHRUBS
CAL LIT CALLISTEMON
'LITTLE JOHN'
LITTLE JOHN
DWARF
BOTTLEBRUSH
LOW 5 GAL PER PLAN
DIA REV DIANELLA REVOLUTA
'LITTLE REV'
LITTLE REV FLAX
LILY LOW 5 GAL PER PLAN
FES MAI FESTUCA MAIREI ATLAS MAIREI LOW 1 GAL PER PLAN
LAN MON
LANTANA
MONTEVIDENSIS
'NEW GOLD'
NEW GOLD
LANTANA LOW 5 GAL PER PLAN
MUH DUB MUHLENBERGIA
DUBIA PINE MUHLY LOW 5 GAL PER PLAN
PEN FAI PENNISETUM 'FAIRY
TAILS'
EVERGREEN
FOUNTAIN GRASS MODERATE 1 GAL PER PLAN
ROS NOA ROSA X
'NOASCHNEE'
FLOWER CARPET
WHITE ROSE MODERATE 2 GAL PER PLAN
SAL CLE SALVIA CLEVELANDII CLEVELAND SAGE LOW 5 GAL PER PLAN
GROUNDCOVERS
ARC PAC ARCTOSTAPHYLOS
'PACIFIC MIST'
PACIFIC MIST
MANZANITA LOW 1 GAL 60" O.C.
LANDSCAPE AREA WILL BE IRRIGATED AND MAINTAINED BY LMAD
LANDSCAPE AREA WILL BE IRRIGATED AND MAINTAINED BY PRIVATE PROPERTY OWNERS (NOT IN CONTRACT)
PLANTING LEGEND
CADD PROJECT FILE NAME:
TIME:
DWG PL-1 SHEET OF
DATE:
YVR_PA-1-3.DWG
DATE
UNDER THE SUPERVISION OF:
DATE:
DATE:
DATE:
CHECKED BY:
DRAWN BY:
DESIGNED BY:
PLANS PREPARED BY:
IRVINE, CA 92606
2121 ALTON PKWY SUITE 210
(949) 477-9000
02/16/24
02/16/24
02/16/24
9:38:35 AM 2023-06-14
51 J:\Yorba Linda-22-00135 Yorba & Savi Ranch Widen\CADD\LAUD\Sheets\YVR_PA-1-3.dwg ML
ML
JG
95% DESIGN
NOT FOR
CONSTRUCTION
REVISIONS CITY OF YORBA LINDA BYNo. DESCRIPTION ACCPT'D BY DATE
SAVI RANCH PARKWAY WIDENING
BASIS OF BEARINGS:
THE BEARINGS SHOWN HEREON ARE BASED ON THE GRID BEARING N18°15'13”E BETWEEN O.C.S. HORIZONTAL CONTROL STATION GPS NO. 3266 AND GPS NO. 5198 PER RECORDS ON FILE IN THE OFFICE OF ORANGE COUNTY SURVEYOR.
CITY OF YORBA LINDA
REVIEWED BY THE DEPARTMENT OF PUBLIC WORKS. THIS PLAN IS SIGNED BY THE CITY ENGINEER FOR SCOPE AND
CONFORMANCE TO CITY STANDARDS, CITY REQUIREMENTS, CITY CODES, REGULATORY AND OTHER GENERAL ENGINEERING REQUIREMENTS ONLY. THE CITY ENGINEER IS NOT RESPONSIBLE FOR DESIGN. ASSUMPTIONS, OR ACCURACY.
REVIEWED BY: RECOMMENDED BY:
PLAN REVIEW ENGINEER
NAME:
COMPANY
RICK YEE
PRINCIPAL CIVIL ENGINEER
SOILS REVIEW ENGINEER
NAME:
COMPANY:
JAMIE LAI
CITY ENGINEER/ PUBLIC WORKS DIRECTOR
REC: 65296
ACCEPTED BY:
DATE DATE
DATE DATE
BENCH MARK:
DESCRIBED BY OCS 2003 - FOUND 3 3\4" OCS ALUMINUM BENCHMARK DISK STAMPED "2J-55-83", SET IN THE NORTHEASTERLY CORNER OF A 4 FT. BY 7.5 FT. CONCRETE CATCH BASIN. MONUMENT IS LOCATED ALONG THE NORTHERLY SIDE OF HIDDEN HILLS DRIVE/ESPARANZA, 0.25 MILES
NORTHEASTERLY ALONG HIDDEN HILLS FROM THE CENTERLINE OF NEW RIVER DRIVE, 14.4 FT. EASTERLY OF A FIRE HYDRANT AND 35 FT.
NORTHERLY OF THE CENTERLINE OF HIDDEN HILLS. MONUMENT IS SET LEVEL WITH THE TOP OF THE CATCH BASIN.
NAVD88 ELEVATION: 393.976, LEVELED IN 2006.
CITY OF ANAHEIM PERMIT NO. RCP 2023-21200
PLANTING NOTES
1. MULCH: INSTALL A UNIFORM THREE INCH COVERING, OF WALK ON FIR BARK MULCH IN ALL PLANTING AREAS, SEE SPECS.
2. TOPSOIL: CONTRACTOR SHALL INSTALL TOPSOIL PER SPECS.
3. SOILS TESTING: SEE SPECIFICATIONS FOR TESTING OF TOPSOIL AND AMENDMENTS. IN ADDITION, CONTRACTOR SHALL
SUBMIT A ONE GALLON SAMPLE OF NATIVE TOPSOIL FROM ANY AREAS PREVIOUSLY COVERED BY PAVING, TO WAYPOINT ANALYTICAL CALIFORNIA, INC. (714) 282-8777 FOR CONTAMINATION TESTING. TESTING REQUIRES FOUR TO FIVE WEEKS.
CONTRACTOR SHALL ALLOW SUFFICIENT TIME FOR TESTING PRIOR TO CONSTRUCTION.
4. CONTRACTOR SHALL NOT EXCAVATE SOIL WITHIN THE DRIP LINE OF EXISTING TREES TO REMAIN.
5. TREES: INSTALL PER PLANS AND DETAILS.
6. SHRUBS: SHRUBS SHALL NOT BE PLANTED WITHIN 3' MINIMUM OF NEWLY PLANTED TREES. A LAYER OF MULCH SHALL BE PLACED AROUND THE TREES AS NOTED ABOVE.
7. GROUNDCOVER: PROVIDE GROUNDCOVER AT INDICATED TRIANGULAR ON-CENTER SPACING THROUGHOUT ALL PLANTING AREAS. GROUNDCOVER SHALL BE PROVIDED UP TO THE WATERING BASIN OF ALL TREES AND SHRUBS. INSTALL PER DETAIL.
PRESERVATION AND PRUNING OF EXISTING TREES
1. WHERE THE NATURAL GRADE WITHIN THE DRIPLINE MUST BE DISTURBED MORE THAN PLUS OR MINUS SIX INCHES, PRECAUTIONS MUST BE TAKEN TO PROVIDE PROPER DRAINAGE AND AERATION. THE TREES SHALL BE PRUNED TO REMOVE WOOD AND TO ENHANCE FORM.
2. PRUNING IS TO BE PREFORMED BY TREE WORKERS WHO, THROUGH RELATED TRAINING AND ON-THE-JOB EXPERIENCE,
ARE FAMILIAR WITH THE TECHNIQUES AND HAZARDS OF THIS WORK INCLUDING TRIMMING, MAINTENANCE, REPAIRING OR REMOVAL, AND EQUIPMENT USED IN SUCH OPERATIONS. THE USE OF CLIMBING SPURS OR IRONS IS NOT APPROVED IN PRUNING OPERATIONS ON LIVE TREES. THIS TYPE OF WORK IS A POTENTIALLY HAZARDOUS OCCUPATION AND IS TO BE
UNDERTAKEN ONLY BY TRAINED PERSONNEL OR UNDER THE SUPERVISION OF TRAINED PERSONNEL, ALL OF WHOM ARE
COVERED WITH WORKERS COMPENSATION, PROPERTY DAMAGE, PUBLIC LIABILITY, AND COMPLETED OPERATIONS INSURANCE.
PRUNING
1. PRUNING SHALL CONSIST OF THE REMOVAL OF DEAD, DYING, DISEASED, INTERFERING, OBJECTIONABLE, AND WEAK BRANCHES ON THE MAIN TRUNKS AS WELL AS THOSE WITHIN THE LEAF AREA. AN OCCASIONAL BRANCH UP TO ONE INCH IN DIAMETER MAY REMAIN WITHIN THE MAIN LEAF AREA WHERE IT IS NOT PRACTICAL TO REMOVE IT.
2. THE FOLLOWING SPECIFICATIONS SHALL APPLY:
-- ALL CUTS SHALL BE MADE SUFFICIENTLY CLOSE TO THE TRUNK OF PARENT LIMB, WITHOUT CUTTING INTO THE BRANCH COLLAR OR LEAVING A PROTRUDING STUB, SO THAT CLOSURE CAN READILY STAR UNDER NORMAL CONDITIONS. CLEAN CUTS SHALL BE MADE AT ALL TIMES.
-- IT IS NECESSARY TO PRECUT BRANCHES TOO HEAVY TO HANDLE TO PREVENT SPLITTING OR PEELING BARK. WHERE
NECESSARY TO PREVENT TREE OR PROPERTY DAMAGE, BRANCHES SHALL BE LOWERED TO THE GROUND BY PROPER ROPES OR EQUIPMENT.
-- TREATMENT OF CUTS AND WOUNDS, WITH TREE WOUND DRESSING, IS OPTIONAL EXCEPT WHERE OPEN WOUNDS IN CERTAIN TREES MAY ATTRACT INSECTS THAT CARRY DISEASE OR ALLOW FUNGUS INVASION. IF SUCH TREATMENT IS MADE,
MATERIALS NON-TOXIC TO THE CAMBIUM LAYER MUST BE USED, AND CARE TAKEN TO TREAT ONLY THE EXPOSED WOOD WITH A THINK COAT OF DRESSING.
-- ON TREES KNOWN TO BE DISEASED, TOOLS ARE TO BE DISINFECTED WITH METHYL ALCOHOL AT 70% (DENATURED WOOD
ALCOHOL DILUTED APPROPRIATELY WITH WATER) OR CLOROX SOLUTION AFTER EACH CUT AND BETWEEN TREES WHERE THERE IS KNOWN TO BE A DANGER OF TRANSMITTING THE DISEASE ON TOOLS. -- OLD INJURIES ARE TO BE INSPECTED. THOSE NOT CLOSING PROPERLY AND WHERE THE CALLUS GROWTH IS NOT ALREADY COMPLETELY ESTABLISHED SHOULD BE TRACED WHERE APPROPRIATE. IF DESIRED, FOR COSMETIC PURPOSES, THE WOUND MAY BE TREATED WITH A THIN COAT OF WOUND DRESSING. -- ALL GIRDLING ROOTS VISIBLE TO THE EYE ARE TO BE CUT. -- THE PRESENCE OF ANY STRUCTURAL WEAKNESS, DISEASE CONDITIONS, DECAYED TRUNK OR BRANCHES, SPLIT
CROTCHES OR BRANCHES, SHOULD BE REPORTED IN WRITING TO THE OWNER, AND CORRECTIVE MEASURES RECOMMENDED.
-- EXISTING OAKS SHALL BE SPRAYED WITH SEVIN AND DIAZINON AS PER THE DIRECTIONS OF THE MANUFACTURER TO CONTROL LEAF ROLLERS AND WORMS. ALSO APPLY THE HERBICIDE ROUNDUP UNDERNEATH THE DRIPLINE OF ALL EXISTING TREES TO REMAIN, TO CONTROL WEED GROWTH DURING CONSTRUCTION. APPLY AS PER THE DIRECTION OF THE MANUFACTURER.
PRESERVATION
1. EACH TREE OR GROUP OF TREES SHALL BE FENCED BY A CHAIN LINK FENCE PRIOR TO ANY GRADING OR MOVEMENT OF HEAVY EQUIPMENT OF ISSUANCE OF ANY PERMITS.
2. FENCING SHALL BE LOCATED ONE FOOT OUTSIDE THE DRIPLINE OF THE TREE OR TREES.
3. PARKING OF VEHICLES, EQUIPMENT, OR STORAGE OF MATERIAL UNDER THE DRIPLINE OF TREES SHALL NOT OCCUR AT ANY TIME.
487 52
T T
SD
SD
SD
SD
SD
SD
SD
SD
SD
SD
SD
SD
SD
SD
SD
E E E
E E E E E E
E E
SS
SS
SS
SS
SS
SS
SS
SS
SS
SS
SS
SS
T T T
T T T
E E
E
E E E E E E
E E E E E
TC
TC
TC
TC TC TC TC TC TC TC TC TC TC TC TC TC TC
TC
TC
TC
TC
TC
TC
TC
TC
TC
TC
TC
COM
COM
COM
CAL IFORNIA CAL IFORN IA
EXIST R/W
EXIST R/W
PROPOSED
GRADING LIMIT
EXIST R/W
SAVI RANCH PKWY
YORBA LINDA BLVD
EXISTING SIGN TO
BE RELOCATED
HERE
10+00 11+00 12+00 13+00
14+00
15+00
16+00
73+00
74+00
75+00
41 FES MAI
17 CAL LIT
16 DIA REV
DIA REV5 12 CAL LIT
3 DIA REV
43 FES MAI
62DIA REV
17 LAN MON
44 DIA REV
19 LAN MON 13 FES MAI
5 PEN FAI
24 FES MAI
33 ROS NOA
69 SAL CLE
17 ROS NOA
27 FES MAI
28 ROS NOA
34 LAN MON 11 FES MAI
6 ARC PAC
PROPOSED
GRADING LIMIT
EXISTING PLANTING MATERIALS TO REMAIN.
CONTRACTOR IS RESPONSIBLE TO REPAIR DAMAGED
PLANT MATERIALS CAUSED BY THE CONSTRUCTION.
GRADING LIMIT, CONTRACTOR SHALL REPAIR THE
PLANTING AREA TO MATCH THE EXISTING
MATCH LINE - SAVI RANCH PKWY
STA 16+00 SEE DWG
PA-02
RS
ME:
DATE:
YVR_PA-1-3.DWG
DATE:
DESIGNED BY:
PLANS PREPARED BY:
IRVINE, CA 92606
2121 ALTON PKWY SUITE 210
(949) 477-9000
02/16/24
M 2023-06-14
ML
95% DESIGN
NOT FOR
CONSTRUCTION
REVISIONS CITY OF YORBA LINDA BYNo. DESCRIPTION ACCPT'D BY DATE
SAVI RANCH PARKWAY WIDENING
BASIS OF BEARINGS:
THE BEARINGS SHOWN HEREON ARE BASED ON THE GRID BEARING N18°15'13”E BETWEEN O.C.S. HORIZONTAL CONTROL STATION GPS NO. 3266 AND GPS NO. 5198 PER RECORDS ON FILE IN THE OFFICE OF ORANGE COUNTY SURVEYOR.
CITY OF YORBA LINDA
REVIEWED BY THE DEPARTMENT OF PUBLIC WORKS. THIS PLAN IS SIGNED BY THE CITY ENGINEER FOR SCOPE AND
CONFORMANCE TO CITY STANDARDS, CITY REQUIREMENTS, CITY CODES, REGULATORY AND OTHER GENERAL ENGINEERING REQUIREMENTS ONLY. THE CITY ENGINEER IS NOT RESPONSIBLE FOR DESIGN. ASSUMPTIONS, OR ACCURACY.
REVIEWED BY: RECOMMENDED BY:
BENCH MARK
CITY OF ANAHEIM PERMIT NO. RCP 2023-2120
SCALE: 1" = 20'
01020 20 40
MATCH LINE - YORBA LINDA BLVD
STA 75+00.30 SEE DWG PA-03
SAVI RANCH PARKWAY WIDENING/CONNECT SAVI RANCH PROJECT
VIA MEMORANDUM
Figure 7
Landscape Plan – Savi Ranch Parkway and Mirage Street 05/2025 • JN 204674
NOT TO SCALE
Source: Mark Thomas, May 2025
PLANTING LEGEND
SYMBOL/ABBREV BOTANICAL NAME COMMON NAME WATER
USE SIZE SPACING
TREES
LAG NAT LAGERSTROEMIA
'NATCHEZ'
'NATCHEZ' CRAPE
MYRTLE
(MULTI-TRUNK)
MODERATE 24"
BOX PER PLAN
EXISTING TREE
SHRUBS
CAL LIT CALLISTEMON
'LITTLE JOHN'
LITTLE JOHN
DWARF
BOTTLEBRUSH
LOW 5 GAL PER PLAN
DIA REV DIANELLA REVOLUTA
'LITTLE REV'
LITTLE REV FLAX
LILY LOW 5 GAL PER PLAN
FES MAI FESTUCA MAIREI ATLAS MAIREI LOW 1 GAL PER PLAN
LAN MON
LANTANA
MONTEVIDENSIS
'NEW GOLD'
NEW GOLD
LANTANA LOW 5 GAL PER PLAN
MUH DUB MUHLENBERGIA
DUBIA PINE MUHLY LOW 5 GAL PER PLAN
PEN FAI PENNISETUM 'FAIRY
TAILS'
EVERGREEN
FOUNTAIN GRASS MODERATE 1 GAL PER PLAN
ROS NOA ROSA X
'NOASCHNEE'
FLOWER CARPET
WHITE ROSE MODERATE 2 GAL PER PLAN
SAL CLE SALVIA CLEVELANDII CLEVELAND SAGE LOW 5 GAL PER PLAN
GROUNDCOVERS
ARC PAC ARCTOSTAPHYLOS
'PACIFIC MIST'
PACIFIC MIST
MANZANITA LOW 1 GAL 60" O.C.
LANDSCAPE AREA WILL BE IRRIGATED AND MAINTAINED BY LMAD
LANDSCAPE AREA WILL BE IRRIGATED AND MAINTAINED BY PRIVATE PROPERTY OWNERS (NOT IN CONTRACT)
SD
T T T
SD
SD
SD
SD
SD
SD
SD
SD
T T T
E E E E E E E E
E E E E E E E E E
W
W
W
W
W W W W W W W W W W W W W W W W W W W W W W W W W W W
W
SS SS SS SS
SS SS SS SS SS SS SS SS SS
SS
SS
E E
T T T T T T T T T
T T T
T T T T T T T T T T T T
T T T T T T T T T
T T T T
COM
COM COM COM COM COM COM
COM COM
COM
COM
COM COM
COM COM COM COM COM COM COM COM
TC
COM
COM
COM
E
EXIST R/W
EXIST R/W
EXIST R/W
EXIST R/W
CRYSTAL DR
PROPOSED
GRADING LIMIT
EXIST R/W
EXIST R/W
EXIST R/W
EXIST R/W
MIRAGE ST
EXIST SIGN P.I.P
SAVI RANCH PKWY
32+00 33+00 34+00 35+00 36+00 37+00 38+00
16+00
17+00
18+00
LAN MON
19 15 LAN MON
41 CAL LIT
67 MUH DUB 39 CAL LIT 15 LAN MON
2 LAG NAT
48 MUH DUB
PLANTING PLAN
MATCH LINE - SAVI RANCH PKWY
STA 16+00 SEE DWG PA-01
CADD PROJECT FILE NAME:
IME:
DWG SHEET OF
DATE:
YVR_PA-1-3.DWG
DATE
UNDER THE SUPERVISION OF:
DATE:
DATE:
DATE:
CHECKED BY:
DRAWN BY:
DESIGNED BY:
PLANS PREPARED BY:
IRVINE, CA 92606
2121 ALTON PKWY SUITE 210
(949) 477-9000
02/16/24
02/16/24
02/16/24
9:38:35 AM 2023-06-14
51 ML
ML
JG
95% DESIGN
NOT FOR
CONSTRUCTION
REVISIONS CITY OF YORBA LINDA No. BY DESCRIPTION ACCPT'D BY DATE
SAVI RANCH PARKWAY WIDENING
BASIS OF BEARINGS:
THE BEARINGS SHOWN HEREON ARE BASED ON THE GRID BEARING N18°15'13”E BETWEEN O.C.S. HORIZONTAL CONTROL STATION GPS NO. 3266 AND GPS NO. 5198 PER RECORDS ON FILE IN THE OFFICE OF ORANGE COUNTY SURVEYOR.
CITY OF YORBA LINDA
REVIEWED BY THE DEPARTMENT OF PUBLIC WORKS. THIS PLAN IS SIGNED BY THE CITY ENGINEER FOR SCOPE AND
CONFORMANCE TO CITY STANDARDS, CITY REQUIREMENTS, CITY CODES, REGULATORY AND OTHER GENERAL ENGINEERING REQUIREMENTS ONLY. THE CITY ENGINEER IS NOT RESPONSIBLE FOR DESIGN. ASSUMPTIONS, OR ACCURACY.
REVIEWED BY: RECOMMENDED BY:
PLAN REVIEW ENGINEER
NAME:
COMPANY
RICK YEE
PRINCIPAL CIVIL ENGINEER
SOILS REVIEW ENGINEER
NAME:
COMPANY:
JAMIE LAI
CITY ENGINEER/ PUBLIC WORKS DIRECTOR
REC: 65296
ACCEPTED BY:
DATE DATE
DATE DATE
BENCH MARK:
DESCRIBED BY OCS 2003 - FOUND 3 3\4" OCS ALUMINUM BENCHMARK DISK STAMPED "2J-55-83", SET IN THE NORTHEASTERLY CORNER OF A 4 FT. BY 7.5 FT. CONCRETE CATCH BASIN. MONUMENT IS LOCATED ALONG THE NORTHERLY SIDE OF HIDDEN HILLS DRIVE/ESPARANZA, 0.25 MILES
NORTHEASTERLY ALONG HIDDEN HILLS FROM THE CENTERLINE OF NEW RIVER DRIVE, 14.4 FT. EASTERLY OF A FIRE HYDRANT AND 35 FT.
NORTHERLY OF THE CENTERLINE OF HIDDEN HILLS. MONUMENT IS SET LEVEL WITH THE TOP OF THE CATCH BASIN.
NAVD88 ELEVATION: 393976LEVELED IN 2006
CITY OF ANAHEIM PERMIT NO. RCP 2023-21200
SCALE: 1" = 20'
20 10 0 20 40
PA02 49
MATCH LINE - CRYSTAL DR
STA 32+00 SEE DWG PA-03
50 52
SAVI RANCH PARKWAY WIDENING/CONNECT SAVI RANCH PROJECT
VIA MEMORANDUM
Figure 8
Landscape Plan – Yorba Linda Boulevard 05/2025 • JN 204674
NOT TO SCALE
Source: Mark Thomas, May 2025
PLANTING LEGEND
SYMBOL/ABBREV BOTANICAL NAME COMMON NAME WATER
USE SIZE SPACING
TREES
LAG NAT LAGERSTROEMIA
'NATCHEZ'
'NATCHEZ' CRAPE
MYRTLE
(MULTI-TRUNK)
MODERATE 24"
BOX PER PLAN
EXISTING TREE
SHRUBS
CAL LIT CALLISTEMON
'LITTLE JOHN'
LITTLE JOHN
DWARF
BOTTLEBRUSH
LOW 5 GAL PER PLAN
DIA REV DIANELLA REVOLUTA
'LITTLE REV'
LITTLE REV FLAX
LILY LOW 5 GAL PER PLAN
FES MAI FESTUCA MAIREI ATLAS MAIREI LOW 1 GAL PER PLAN
LAN MON
LANTANA
MONTEVIDENSIS
'NEW GOLD'
NEW GOLD
LANTANA LOW 5 GAL PER PLAN
MUH DUB MUHLENBERGIA
DUBIA PINE MUHLY LOW 5 GAL PER PLAN
PEN FAI PENNISETUM 'FAIRY
TAILS'
EVERGREEN
FOUNTAIN GRASS MODERATE 1 GAL PER PLAN
ROS NOA ROSA X
'NOASCHNEE'
FLOWER CARPET
WHITE ROSE MODERATE 2 GAL PER PLAN
SAL CLE SALVIA CLEVELANDII CLEVELAND SAGE LOW 5 GAL PER PLAN
GROUNDCOVERS
ARC PAC ARCTOSTAPHYLOS
'PACIFIC MIST'
PACIFIC MIST
MANZANITA LOW 1 GAL 60" O.C.
LANDSCAPE AREA WILL BE IRRIGATED AND MAINTAINED BY LMAD
LANDSCAPE AREA WILL BE IRRIGATED AND MAINTAINED BY PRIVATE PROPERTY OWNERS (NOT IN CONTRACT)
PLANTING NOTES
1. MULCH: INSTALL A UNIFORM THREE INCH COVERING, OF WALK ON FIR BARK MULCH IN ALL PLANTING AREAS, SEE SPECS.
2. TOPSOIL: CONTRACTOR SHALL INSTALL TOPSOIL PER SPECS.
3. SOILS TESTING: SEE SPECIFICATIONS FOR TESTING OF TOPSOIL AND AMENDMENTS. IN ADDITION, CONTRACTOR SHALL
SUBMIT A ONE GALLON SAMPLE OF NATIVE TOPSOIL FROM ANY AREAS PREVIOUSLY COVERED BY PAVING, TO WAYPOINT ANALYTICAL CALIFORNIA, INC. (714) 282-8777 FOR CONTAMINATION TESTING. TESTING REQUIRES FOUR TO FIVE WEEKS.
CONTRACTOR SHALL ALLOW SUFFICIENT TIME FOR TESTING PRIOR TO CONSTRUCTION.
4. CONTRACTOR SHALL NOT EXCAVATE SOIL WITHIN THE DRIP LINE OF EXISTING TREES TO REMAIN.
5. TREES: INSTALL PER PLANS AND DETAILS.
6. SHRUBS: SHRUBS SHALL NOT BE PLANTED WITHIN 3' MINIMUM OF NEWLY PLANTED TREES. A LAYER OF MULCH SHALL BE PLACED AROUND THE TREES AS NOTED ABOVE.
7. GROUNDCOVER: PROVIDE GROUNDCOVER AT INDICATED TRIANGULAR ON-CENTER SPACING THROUGHOUT ALL PLANTING AREAS. GROUNDCOVER SHALL BE PROVIDED UP TO THE WATERING BASIN OF ALL TREES AND SHRUBS. INSTALL PER DETAIL.
PRESERVATION AND PRUNING OF EXISTING TREES
1. WHERE THE NATURAL GRADE WITHIN THE DRIPLINE MUST BE DISTURBED MORE THAN PLUS OR MINUS SIX INCHES, PRECAUTIONS MUST BE TAKEN TO PROVIDE PROPER DRAINAGE AND AERATION. THE TREES SHALL BE PRUNED TO REMOVE WOOD AND TO ENHANCE FORM.
2. PRUNING IS TO BE PREFORMED BY TREE WORKERS WHO, THROUGH RELATED TRAINING AND ON-THE-JOB EXPERIENCE,
ARE FAMILIAR WITH THE TECHNIQUES AND HAZARDS OF THIS WORK INCLUDING TRIMMING, MAINTENANCE, REPAIRING OR REMOVAL, AND EQUIPMENT USED IN SUCH OPERATIONS. THE USE OF CLIMBING SPURS OR IRONS IS NOT APPROVED IN PRUNING OPERATIONS ON LIVE TREES. THIS TYPE OF WORK IS A POTENTIALLY HAZARDOUS OCCUPATION AND IS TO BE
UNDERTAKEN ONLY BY TRAINED PERSONNEL OR UNDER THE SUPERVISION OF TRAINED PERSONNEL, ALL OF WHOM ARE
COVERED WITH WORKERS COMPENSATION, PROPERTY DAMAGE, PUBLIC LIABILITY, AND COMPLETED OPERATIONS INSURANCE.
PRUNING
1. PRUNING SHALL CONSIST OF THE REMOVAL OF DEAD, DYING, DISEASED, INTERFERING, OBJECTIONABLE, AND WEAK BRANCHES ON THE MAIN TRUNKS AS WELL AS THOSE WITHIN THE LEAF AREA. AN OCCASIONAL BRANCH UP TO ONE INCH IN DIAMETER MAY REMAIN WITHIN THE MAIN LEAF AREA WHERE IT IS NOT PRACTICAL TO REMOVE IT.
2. THE FOLLOWING SPECIFICATIONS SHALL APPLY:
-- ALL CUTS SHALL BE MADE SUFFICIENTLY CLOSE TO THE TRUNK OF PARENT LIMB, WITHOUT CUTTING INTO THE BRANCH COLLAR OR LEAVING A PROTRUDING STUB, SO THAT CLOSURE CAN READILY STAR UNDER NORMAL CONDITIONS. CLEAN CUTS SHALL BE MADE AT ALL TIMES.
-- IT IS NECESSARY TO PRECUT BRANCHES TOO HEAVY TO HANDLE TO PREVENT SPLITTING OR PEELING BARK. WHERE
NECESSARY TO PREVENT TREE OR PROPERTY DAMAGE, BRANCHES SHALL BE LOWERED TO THE GROUND BY PROPER ROPES OR EQUIPMENT.
-- TREATMENT OF CUTS AND WOUNDS, WITH TREE WOUND DRESSING, IS OPTIONAL EXCEPT WHERE OPEN WOUNDS IN CERTAIN TREES MAY ATTRACT INSECTS THAT CARRY DISEASE OR ALLOW FUNGUS INVASION. IF SUCH TREATMENT IS MADE,
MATERIALS NON-TOXIC TO THE CAMBIUM LAYER MUST BE USED, AND CARE TAKEN TO TREAT ONLY THE EXPOSED WOOD WITH A THINK COAT OF DRESSING.
-- ON TREES KNOWN TO BE DISEASED, TOOLS ARE TO BE DISINFECTED WITH METHYL ALCOHOL AT 70% (DENATURED WOOD
ALCOHOL DILUTED APPROPRIATELY WITH WATER) OR CLOROX SOLUTION AFTER EACH CUT AND BETWEEN TREES WHERE THERE IS KNOWN TO BE A DANGER OF TRANSMITTING THE DISEASE ON TOOLS. -- OLD INJURIES ARE TO BE INSPECTED. THOSE NOT CLOSING PROPERLY AND WHERE THE CALLUS GROWTH IS NOT ALREADY COMPLETELY ESTABLISHED SHOULD BE TRACED WHERE APPROPRIATE. IF DESIRED, FOR COSMETIC PURPOSES, THE WOUND MAY BE TREATED WITH A THIN COAT OF WOUND DRESSING. -- ALL GIRDLING ROOTS VISIBLE TO THE EYE ARE TO BE CUT. -- THE PRESENCE OF ANY STRUCTURAL WEAKNESS, DISEASE CONDITIONS, DECAYED TRUNK OR BRANCHES, SPLIT
CROTCHES OR BRANCHES, SHOULD BE REPORTED IN WRITING TO THE OWNER, AND CORRECTIVE MEASURES RECOMMENDED.
-- EXISTING OAKS SHALL BE SPRAYED WITH SEVIN AND DIAZINON AS PER THE DIRECTIONS OF THE MANUFACTURER TO CONTROL LEAF ROLLERS AND WORMS. ALSO APPLY THE HERBICIDE ROUNDUP UNDERNEATH THE DRIPLINE OF ALL EXISTING TREES TO REMAIN, TO CONTROL WEED GROWTH DURING CONSTRUCTION. APPLY AS PER THE DIRECTION OF THE MANUFACTURER.
PRESERVATION
1. EACH TREE OR GROUP OF TREES SHALL BE FENCED BY A CHAIN LINK FENCE PRIOR TO ANY GRADING OR MOVEMENT OF HEAVY EQUIPMENT OF ISSUANCE OF ANY PERMITS.
2. FENCING SHALL BE LOCATED ONE FOOT OUTSIDE THE DRIPLINE OF THE TREE OR TREES.
COM COM COM COM COM COM
T T T T T
T
SS SS SS SS SS SS SS SS SS SS SS SS SS SS SS SS E E
E E E E E E
E E E
T T T
W W
W W
W W
EXIST R/W
EXIST R/W
EXIST R/W
OLD CANAL RD
YORBA LINDA BLVD
PROPOSED
GRADING LIMIT
EXIST R/W
EXISTING SIGN TO
BE RELOCATED
HERE
41+00
42+00
75+00 76+00 77+00
78+00
79+00
9 FES MAI
13LAN MON
W
W
W W
E E E E E E E
W W W W W W W
T T T
T T T T
31+00 32+00
EXIST R/W
PLANTS WILL BE IN FILTERRA UNITS AND WILL
BE PAID AS PART OF THE FILTERRA SYSTEM.
CONTACT THE CITY FOR THE REQUIRED PLANT
SPECIES AND INSTALL THE PLANT PER MFR
DETAILS AND SPECIFICATIONS.
EXIST R/W
AME:
DATE:
YVR_PA-1-3.DWG
DATE
DATE:
DRAWN BY
DESIGNED BY:
PLANS PREPARED BY:
IRVINE, CA 92606
2121 ALTON PKWY SUITE 210
(949) 477-9000
02/16/24
02/16/24
M 2023-06-14
ML
ML
95% DESIGN
NOT FOR
CONSTRUCTION
REVISIONS CITY OF YORBA LINDA No. BY DESCRIPTION ACCPT'D BY DATE
SAVI RANCH PARKWAY WIDENING
BASIS OF BEARINGS:
THE BEARINGS SHOWN HEREON ARE BASED ON THE GRID BEARING N18°15'13”E BETWEEN O.C.S. HORIZONTAL CONTROL STATION GPS NO. 3266 AND GPS NO. 5198 PER RECORDS ON FILE IN THE OFFICE OF ORANGE COUNTY SURVEYOR.
CITY OF YORBA LINDA
REVIEWED BY THE DEPARTMENT OF PUBLIC WORKS. THIS PLAN IS SIGNED BY THE CITY ENGINEER FOR SCOPE AND
CONFORMANCE TO CITY STANDARDS, CITY REQUIREMENTS, CITY CODES, REGULATORY AND OTHER GENERAL ENGINEERING REQUIREMENTS ONLY. THE CITY ENGINEER IS NOT RESPONSIBLE FOR DESIGN. ASSUMPTIONS, OR ACCURACY.
REVIEWED BY: RECOMMENDED BY:
BENCH MARK:
CITY OF ANAHEIM PERMIT NO. RCP 2023-21200
MATCH LINE - YORBA LINDA BLVD STA 75+00.30 SEE DWG PA-01
MATCH LINE - CRYSTAL DR
STA 32+00 SEE DWG PA-02
SCALE: 1" = 20'
20 10 0 20 40
SCALE: 1" = 20'
20 10 0 20 40
SAVI RANCH PARKWAY WIDENING/CONNECT SAVI RANCH PROJECT
VIA MEMORANDUM
Figure 9a
Area of Visual Effect
1 5
7 6
4 2
3 8
E CRYSTAL DR
SANTA ANA RIVER
PULLMAN ST
SAVI RANCH PKWY
OLD CANAL RD
EASTPARK DR
OAKCREST CR
RIVERSIDE FWY
YORBA LINDA BLVDYORBA LINDA BLVD
SANTA ANA RIVERSANTA ANA RIVER
LA PALMA AVELA PALMA AVE
MIRAGE STMIRAGE ST
MULTI-USE TRAIL
AREA OF VISUAL EFFECT (AVE)
ROADWAY IMPROVEMENTS
# EXISTING VIEWS
05/2025 • JN 204674
NOT TO SCALE
Source: Google Earth Pro, May 2025
Southbound view of Yorba Linda Boulevard and Savi Ranch Parkway intersection. East-facing view of Old Canal Road from Yorba Linda Boulevard bridge.
Northbound view of Yorba Linda Boulevard and monument signs. Northeast view of Savi Ranch Parkway and Yorba Linda Boulevard, with Savi Ranch monument sign.
Southbound view of Yorba Linda Boulevard and Savi Ranch Parkway intersection.
Northbound view of Yorba Linda Boulevard and monument signs.
East-facing view of Old Canal Road from Yorba Linda Boulevard bridge.
Northeast view of Savi Ranch Parkway and Yorba Linda Boulevard, with Savi Ranch monument sign.
SAVI RANCH PARKWAY WIDENING/CONNECT SAVI RANCH PROJECT
VIA MEMORANDUM
Figure 9b
Existing Conditions Photographs 05/2025 • JN 204674
Southbound view of Yorba Linda Boulevard and Savi Ranch Parkway intersection. East-facing view of Old Canal Road from Yorba Linda Boulevard bridge.
Northbound view of Yorba Linda Boulevard and monument signs. Northeast view of Savi Ranch Parkway and Yorba Linda Boulevard, with Savi Ranch monument sign.
Southbound view of Yorba Linda Boulevard and Savi Ranch Parkway intersection. East-facing view of Old Canal Road from Yorba Linda Boulevard bridge.
Northbound view of Yorba Linda Boulevard and monument signs. Northeast view of Savi Ranch Parkway and Yorba Linda Boulevard, with Savi Ranch monument sign.
Southbound view of Yorba Linda Boulevard and Savi Ranch Parkway intersection. East-facing view of Old Canal Road from Yorba Linda Boulevard bridge.
Northbound view of Yorba Linda Boulevard and monument signs. Northeast view of Savi Ranch Parkway and Yorba Linda Boulevard, with Savi Ranch monument sign.
1 3
2 4
Westbound view of Savi Ranch Parkway and Yorba Linda Boulevard intersection. Southbound view of Mirage Street and Savi Ranch Parkway intersection.
Southeast view of Mirage Street and Savi Ranch Parkway intersection. Westbound view of Yorba Linda Boulevard bridge from Old Canal Road.
Westbound view of Savi Ranch Parkway and Yorba Linda Boulevard intersection.
Southeast view of Mirage Street and Savi Ranch Parkway intersection.
Southbound view of Mirage Street and Savi Ranch Parkway intersection.
Westbound view of Yorba Linda Boulevard bridge from Old Canal Road.
SAVI RANCH PARKWAY WIDENING/CONNECT SAVI RANCH PROJECT
VIA MEMORANDUM
Figure 9c
Existing Conditions Photographs 05/2025 • JN 204674
Westbound view of Savi Ranch Parkway and Yorba Linda Boulevard intersection. Southbound view of Mirage Street and Savi Ranch Parkway intersection.
Southeast view of Mirage Street and Savi Ranch Parkway intersection. Westbound view of Yorba Linda Boulevard bridge from Old Canal Road.
Westbound view of Savi Ranch Parkway and Yorba Linda Boulevard intersection. Southbound view of Mirage Street and Savi Ranch Parkway intersection.
Southeast view of Mirage Street and Savi Ranch Parkway intersection. Westbound view of Yorba Linda Boulevard bridge from Old Canal Road.
Westbound view of Savi Ranch Parkway and Yorba Linda Boulevard intersection. Southbound view of Mirage Street and Savi Ranch Parkway intersection.
Southeast view of Mirage Street and Savi Ranch Parkway intersection. Westbound view of Yorba Linda Boulevard bridge from Old Canal Road. 5 7
6 8
APPENDIX A
Scoping Questionnaire
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Attachment B Page 310 of 2424
Air Quality Technical Memorandum
TO: Alan Ashimine
Michael Baker International, Inc.
FROM: Anders Sutherland, Senior Air Quality Specialist
Terry A. Hayes Associates Inc.
SUBJECT: Savi Ranch Parkway Widening/Connect Savi Ranch Project DATE: May 20, 2025
SUMMARY OF FINDINGS
This Air Quality Technical Memorandum was prepared to assess the potential for adverse air quality effects associated with implementation of the Savi Ranch Parkway Widening/Connect Savi Ranch Project (proposed project). The analysis was prepared to support approvals associated with the National Environmental Policy Act (NEPA). Regarding long-term changes in air pollutant emissions and local air quality, the proposed project would not introduce a new permanent source of emissions to the project area and would not have any material effect on traffic circulation patterns. Therefore, this air quality assessment focuses on emissions that would be generated during proposed project construction. The following statements summarize the conclusions drawn from the assessment. • Conformity: The proposed project is exempt from the requirement to determine conformity based on 40 Code of Federal Regulations (CFR) Section 93.126 under the classification of “bike and pedestrian facilities.” The proposed project is also specifically exempt from regional conformity under 40 CFR 93.127 being designated as an “intersection channelization project.” • Temporary Effects (Construction)
o Criteria Pollutant and Ozone Precursor Emissions: Construction of the proposed project would generate temporary emissions of ozone precursors and criteria air pollutants; however, the magnitude of peak daily emissions would remain substantially below the South Coast Air Quality Management District (SCAQMD) screening values for regional emissions. Construction activities would not result in adverse air quality effects. o Asbestos: According to the California Department of Conservation – Division of Mines and Geology, there are no areas within Orange County where naturally occurring asbestos (NOA) is found. Construction activities would not have a risk of disturbing NOA deposits. • Permanent Effects (Operations)
o Criteria Pollutant and Ozone Precursor Emissions: Implementation of the proposed project would not change traffic volumes in the project area and would not generate new vehicle trips. Proposed project operations would not result in adverse air quality effects. o Mobile Source Air Toxic (MSAT) Emissions: The proposed project is exempt from conformity under 40 CFR Section 93.126 and would not result in any change in traffic volumes or the vehicle fleet mix in the project area. There is no potential for MSAT effects.
Savi Ranch Parkway Widening/Connect Savi Ranch Project
May 20, 2025
INTRODUCTION
The City of Yorba Linda (City) proposes roadway and multi-use trail improvements within and surrounding Savi Ranch. The proposed project is partially funded through federal grants thereby requiring discretionary approval from federal agencies and compliance with NEPA. The Lead Agency for NEPA is the California Department of Transportation (Caltrans), as designated by the Federal Highway Administration (FHWA). The Air Quality Technical Memorandum is organized as follows:
• Project Description
• Background on Air Quality
• Regulatory and Policy Framework
• Existing Environmental Setting
• Assessment of Air Quality Effects
• List of Preparers
The air quality analysis addresses air pollutant emissions that would be generated by short-term construction activities. All data and calculations utilized for the air quality assessments can be found in the technical Appendix at the end of this memorandum.
PROJECT DESCRIPTION
The proposed project would include a range of roadway and multi-use trail improvements in the southeastern portion of the City, along the border between the cities of Yorba Linda and Anaheim, in the County of Orange. The proposed roadway improvements would be located on Savi Ranch Parkway between Yorba Linda Boulevard and Mirage Street, on Mirage Street between Crystal Drive and Old Canal Road, and on Yorba Linda Boulevard from Savi Ranch Parkway to approximately 480 feet south of Savi Ranch Parkway. The regional location of the proposed project is shown in Figure 1, and the site vicinity is shown in Figure 2. The following describes in further detail the proposed roadway and trail improvements associated with the proposed project.
Roadway Improvements
Savi Ranch Parkway: The proposed project would widen Savi Ranch Parkway to provide a third westbound left-turn lane at the Yorba Linda Boulevard intersection. The westbound free right-turn lane from Mirage Street would be reconfigured into a signalized right-turn lane, and the existing median at this location would be removed. The eastbound free right-turn lane at Mirage Street would be eliminated for pedestrian safety and increase vehicular mobility, and the existing eastbound left-turn lane would be lengthened from 300 feet to 430 feet in order to allow additional storage. Other roadway improvements would include median layout modifications and traffic signal modifications at the Yorba Linda Boulevard and Mirage Street intersections.
Yorba Linda Boulevard: The proposed project would eliminate the eastbound free right-turn and adjacent raised median at Savi Ranch Parkway; this improvement is intended to address pedestrian safety and increase vehicular mobility. The project would widen Yorba Linda Boulevard on the easterly side to provide two right-turn lanes while maintaining the existing through lanes. A length of 450 feet would be provided for right-turn storage. Additional improvements include a modification to the existing sidewalk connecting to an adjacent restaurant use (Taco Bell) and relocation of an existing Savi Ranch monument sign.
TAHA 2024-081
Savi Ranch Parkway Widening/Connect Savi Ranch Project
Air Quality Technical Memorandum
MICHAEL BAKER INTERNATIONAL, INC.
Source: Michael Baker International, Inc., 2024.
FIGURE 1
REGIONAL VICINITY
TAHA 2024-081
Savi Ranch Parkway Widening/Connect Savi Ranch Project
Air Quality Technical Memorandum
MICHAEL BAKER INTERNATIONAL, INC.
FIGURE 2
SITE VICINITY
Source: Michael Baker International, Inc., 2025.
Savi Ranch Parkway Widening/Connect Savi Ranch Project
May 20, 2025
Mirage Street: The proposed project would eliminate the existing southbound yield right-turn at Savi Ranch Parkway; this improvement is intended to address pedestrian safety and increase vehicular mobility. Additional improvements at this segment include a sidewalk on the westerly side of Mirage Street from Savi Ranch Parkway to the existing driveway for the PetSmart and Staples parking lot, and Americans with Disabilities Act (ADA) access ramps and paths of travel.
Multi-Use Trail
The proposed project would include a Class I off-street multi-use path on Savi Ranch Parkway and Mirage Street and a Class IV separated bikeway along Old Canal Road. The proposed bikeways would be 12 feet wide with an asphalt concrete surface.
Additional Improvements
The proposed project would also include removal/relocation of traffic and signage landscaping and irrigation; installation of new illuminated traffic signs at the intersections of Yorba Linda Boulevard/Savi Ranch Parkway and Savi Ranch Parkway/Mirage Street; installation of four retaining walls at with one at Mirage Street, two at Savi Ranch Parkway, and one at Yorba Linda Boulevard; and removal of two existing catch basins and installation of two new catch basins.
BACKGROUND ON AIR QUALITY
Certain air pollutants have been recognized to cause notable health problems and consequential damage to the environment either directly or in reaction with other pollutants, due to their presence in elevated concentrations in the atmosphere. Air quality is commonly characterized by ambient air concentrations of seven specific pollutants identified by the United States Environmental Protection Agency (USEPA) to be of concern with respect to health and welfare of the general public under the federal Clean Air Act (CAA). These specific pollutants, known as criteria air pollutants, are pollutants for which the federal and state governments have established ambient air quality standards, or criteria, for outdoor concentrations to protect public health. Federal criteria air pollutants include ground-level ozone (O3), nitrogen dioxide (NO2), carbon monoxide (CO), sulfur dioxide (SO2), particulate matter (PM)—subdivided into particulates ten microns or less in diameter (PM10) and fine particulate matter 2.5 microns or less in diameter (PM2.5)—and lead (Pb). These pollutants are common byproducts of human activities and have been documented through scientific research to cause adverse health effects. The federal ambient concentration criteria are known as the National Ambient Air Quality Standards (NAAQS), and the California ambient concentration criteria are referred to as the California Ambient Air Quality Standards (CAAQS).
The NAAQS and CAAQS have been set at levels considered safe to protect public health, including the health of sensitive populations such as asthmatics, children, and the elderly with a margin of safety, and to protect public welfare, including protection against decreased visibility and damage to animals, crops, vegetation, and buildings.1,2 As the scientific methods for the study of air pollution health effects have progressed over the past decades, adverse effects have been shown to occur at lower levels of exposure. New findings over time have, in turn, led to the revision and lowering of NAAQS which, in the judgment of the USEPA, are necessary to protect public health. Table 1 presents the NAAQS and CAAQS with the corresponding averaging times over which the ambient concentrations are measured for comparison to the standards. 1USEPA, NAAQS Table, https://www.epa.gov/criteria-air-pollutants/naaqs-table, Accessed May 13, 2025. 2CARB, Common Air Pollutants, https://ww2.arb.ca.gov/resources/common-air-pollutants, Accessed May 13, 2025.
Savi Ranch Parkway Widening/Connect Savi Ranch Project
May 20, 2025
TABLE 1: AMBIENT AIR QUALITY STANDARDS
Pollutant Averaging Time CAAQS NAAQS
Ozone
(O3)
1-Hour 0.09 ppm (180 µg/m3) --
8-Hour 0.07 ppm (137 µg/m3) 0.07 ppm (137 µg/m3)
Carbon Monoxide
(CO)
1-Hour 20 ppm (23 mg/m3) 35 ppm (40 mg/m3)
8-Hour 9.0 ppm (10 mg/m3) 9.0 ppm (10 mg/m3)
Nitrogen Dioxide
(NO2)
1-Hour 0.18 ppm (339 µg/m3) 0.10 ppm (188 µg/m3)
Annual Average 0.030 ppm (57 µg/m3) 0.053 ppm (100 µg/m3) Sulfur Dioxide
(SO2)
1-Hour 0.25 ppm (655 µg/m3) 0.075 ppm (196 µg/m3)
24-Hour 0.04 ppm (105 µg/m3) 0.14 ppm (180 µg/m3)
Respirable Particulate Matter
(PM10)
24-Hour 50 µg/m3 150 µg/m3
Annual Average 20 µg/m3--
Fine Particulate Matter
(PM2.5)
24-Hour -- 35 µg/m3
Annual Average 12 µg/m3 9.0 µg/m3
Lead
(Pb)
30-Day Average 1.5 µg/m3--
3-Month Average -- 0.15 µg/m3
Visibility Reducing Particles 8-Hour extinct 0.23 per kilometer No National Standard Sulfates 24-Hour 25 µg/m3) No National Standard
Hydrogen Sulfide 1-Hour 0.03 ppm (42 µg/m3) No National Standard Vinyl Chloride 24-Hour 0.01 ppm (26 µg/m3) No National Standard Note: CAAQS = California Ambient Air Quality Standard; NAAQS = National Ambient Air Quality Standard; ppm= parts per million.
SOURCE: CARB, 2024.
Controlling air toxic emissions became a national priority with the passage of the Clean Air Act Amendments (CAAA) of 1990, whereby Congress mandated that the USEPA regulate 188 air toxics, also known as hazardous air pollutants. The USEPA has assessed this expansive list in its rule on the Control of Hazardous Air Pollutants from Mobile Sources (Federal Register, Vol. 72, No. 37, page 8430, February 26, 2007), and identified a group of 93 compounds emitted from mobile sources that are part of USEPA’s Integrated Risk Information System (IRIS). In addition, the USEPA identified nine compounds with significant contributions from mobile sources—referred to as Mobile Source Air Toxics (MSAT)—that are among the national and regional-scale cancer risk drivers or contributors and non-hazard contributors from the 2011 National Air Toxics Assessment (NATA). These toxic pollutants are 1,3-butadiene, acetaldehyde, acrolein, benzene, diesel particulate matter (diesel PM), ethylbenzene, formaldehyde, naphthalene, and polycyclic organic matter. While the Federal Highway Administration (FHWA) considers these the priority mobile source air toxics, the list is subject to change and may be adjusted in consideration of future U.S. EPA rules. The 2007 USEPA rule mentioned above requires controls that will dramatically decrease MSAT emissions through cleaner fuels and cleaner engines.
Asbestos is a term used for several types of naturally occurring fibrous minerals that are a human health hazard when airborne. The most common type of asbestos is chrysotile, but other types such as tremolite and actinolite are also found in California. Asbestos is classified as a known human carcinogen by state, federal, and international agencies and was identified as a toxic air contaminant by the CARB in 1986. All types of asbestos are hazardous and may cause lung disease and cancer.
Asbestos can be released from serpentine and ultramafic rocks when the rock is broken or crushed.
At the point of release, the asbestos fibers may become airborne, causing air quality and human
Savi Ranch Parkway Widening/Connect Savi Ranch Project
May 20, 2025
health hazards. These rocks have been commonly used for unpaved gravel roads, landscaping, fill projects, and other improvement projects in some localities. Asbestos may be released to the atmosphere due to vehicular traffic on unpaved roads, during grading for development projects, and at quarry operations. All of these activities may have the effect of releasing potentially harmful asbestos into the air.
REGULATORY AND POLICY FRAMEWORK
Federal Regulations
Federal Clean Air Act. The Clean Air Act (CAA) is the comprehensive federal law that regulates air emissions from stationary and mobile sources. One of the law’s primary functions is authorizing the United States Environmental Protection Agency (U.S. EPA) to establish the National Ambient Air Quality Standards (NAAQS) to protect public health and public welfare based on the latest science and requires states to adopt enforceable plans to achieve the standards. An air quality standard defines the maximum amount of a pollutant averaged over a specified period of time that can be present in outdoor, or ambient, air without any harmful effects on people or the environment; thus, it is used as a threshold metric to define clean air. Congress designed the CAA to minimize pollution increases from growing numbers of motor vehicles, and from new or expanded stationary sources (i.e., power plants, industrial plants and other facilities that are not mobile).
USEPA administers national programs to monitor concentrations of certain air pollutants and control emissions from major sources. The CAA also contains specific provisions to address the following:
• “Hazardous” or “toxic” air pollutants that pose health risks, such as cancer or environmental threats such as bioaccumulation of heavy metals
• Acid rain that damages aquatic life and ecosystems, acidifies forest soils, damages property, and forms from pollution that degrades visibility and harms public health • Chemical emissions that deplete the stratospheric ozone layer • Regional haze that impairs visibility in national parks and other recreational areas In addition, the CAA was drafted with general authorities that can be used to address pollution problems that emerge over time. Through the CAA, USEPA regulates emission sources that are under the exclusive authority of the federal government—such as aircrafts, ships, and certain types of locomotives—as well as mandating various emission standards, including those standards for on-road vehicles sold in states other than California.
The CAA requires USEPA to set and revise NAAQS for certain common and widespread pollutants, known as “criteria pollutants,” and provides authority for the agency to add additional pollutants.
Standards are in effect today for six pollutants: ozone (O3), nitrogen dioxide (NO2), carbon monoxide (CO), sulfur dioxide (SO2), particulate matter—regulated as subsets of particles with diameter less than 2.5 microns and less than 10 microns, denoted as fine particulate matter of diameter less than
2.5 microns (PM2.5) and respirable particulate matter of diameter less than 10 microns (PM10,), respectively—and lead (Pb). NAAQS are selected by the USEPA administrator at the conclusion of a public process that takes about 5 years for completion. The process starts with a comprehensive review of the relevant scientific literature, which is then synthesized to inform a risk and exposure assessment conducted by the USEPA staff. The CAA requires USEPA to review and, if necessary, revise each of the NAAQS at 5-year intervals. The current NAAQS are summarized in Table 1, above.
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Transportation Conformity. As part of its enforcement responsibilities, the USEPA requires each state with nonattainment areas to prepare and submit a State Implementation Plan (SIP) that demonstrates the means to attain the federal standards. The SIP must integrate federal, state, and local plan components and regulations to identify specific measures to reduce pollution, using a combination of performance standards and market-based programs within the timeframe identified in the SIP. The conformity requirement is based on the federal CAA Section 176(c), which prohibits United States Department of Transportation and other federal agencies from funding, authorizing or approving plans, programs or projects that do not conform to the SIP for attaining the NAAQS.
Conformity requirements apply only in nonattainment and “maintenance” (former nonattainment) areas for the NAAQS, and only for the specific NAAQS that are or were violated. The USEPA regulations in 40 Code of Federal Regulations Part 93 govern the conformity process. Conformity requirements do not apply in unclassifiable/attainment areas for NAAQS and do not apply at all for state standards regardless of the status of the area.
“Transportation Conformity” applies to highway and transit projects and takes place on two levels: the regional—or, planning and programming level—and the project level. The proposed project must conform at both levels to be approved. Regional conformity is concerned with how well the regional transportation system supports plans for attaining the NAAQS for carbon monoxide (CO), nitrogen dioxide (NO2), ozone (O3), particulate matter (PM10 and PM2.5), and in some areas (although not in California), sulfur dioxide (SO2). Regional conformity is based on emission analysis of Regional Transportation Plans (RTPs) and Federal Transportation Improvement Programs (FTIPs) that include all transportation projects planned for a region over a period of at least 20 years (for the RTP), and 4 years (for the FTIP). RTP and FTIP conformity uses travel demand and emission models to determine whether or not the implementation of those projects would conform to emission budgets or other tests at various analysis years showing that requirements of the Clean Air Act and the SIP are met.
Project-level conformity is achieved by demonstrating that the project comes from a conforming RTP and TIP and the project has a design concept and scope3that has not changed significantly from those in the RTP and TIP. If the design concept and scope have changed substantially from that used in the RTP Conformity analysis, RTP and TIP amendments may be needed. Project-level conformity also needs to demonstrate that project analyses have used the latest planning assumptions and U.S.
EPA-approved emissions models; the project complies with any control measures in the SIP in PM areas. Furthermore, additional analyses (known as hot-spot analyses) may be required for projects located in CO and PM nonattainment or maintenance areas to examine localized air quality impacts.
Metropolitan Transportation Planning Regulations. Codified in Chapter 23, Section 134 and Chapter 49, Section 5303 of the United States Code (USC), federal regulations require that transportation planning in any urbanized area having a population of 50,000 or more be guided and maintained by a regional entity known as a Metropolitan Planning Organization (MPO). Under this regulatory structure, MPOs are required to develop a Transportation Improvement Program (TIP),a list of upcoming transportation projects, covering a period of at least 4 years. The regulation provides that the TIP should include capital and non-capital surface transportation projects, bicycle and pedestrian facilities, other transportation enhancements, Federal Lands Highway projects and safety projects included in California’s Strategic Highway Safety Plan. The TIP should include all regionally significant projects receiving FHWA or FTA funds, or for which FHWA or FTA approval is required, in addition to non-federally funded projects that are consistent with the MTP. Furthermore, it is required that the TIP 3 "Design concept" means the type of facility that is proposed, such as a freeway or arterial highway. "Design scope" refers to those aspects of the project that would clearly affect capacity and thus any regional emissions analysis, such as the number of lanes and the length of the project.
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be fiscally constrained, with all programmed projects having approved allocated funding. The USC states that it is in the national interest to:
(i) encourage and promote the safe and efficient management, operation, and development of resilient surface transportation systems that will serve the mobility needs of people and freight and foster economic growth and development within and between States and urbanized areas and better connect housing and employment, while minimizing transportation-related fuel consumption and air pollution through metropolitan and statewide transportation planning processes; and,
(ii) encourage the continued improvement and evolution of the metropolitan and statewide transportation planning processes by MPOs, State departments of transportation, and public transit operators.
National Environmental Policy Act. NEPA requires that policies and regulations administered by the federal government are consistent with its environmental protection goals. NEPA also requires that federal agencies use an interdisciplinary approach to planning and decision-making for any actions that could impact the environment. It requires environmental review of federal actions including the creation of environmental documents that describe the environmental effects of a proposed project and its alternatives (including a section on air quality impacts).
State Regulations
Air quality in California is also governed by more stringent regulations under the California Clean Air Act (CCAA). The CCAA is administered by the California Air Resources Board (CARB) at the state level and by the Air Quality Management Districts at the regional and local levels. The CCAA requires all areas of the state to achieve and maintain the California Ambient Air Quality Standards (CAAQS) by the earliest feasible date, which is determined in the most recent SIP based on existing emissions and reasonably foreseeable control measures that will be implemented in the future. The CAAQS are also summarized in Table 1, above.
The CARB, a department of the California Environmental Protection Agency, is responsible for the coordination and administration of both federal and state air pollution control programs within California. In this capacity, the CARB conducts research, designates the CAAQS, compiles emission inventories, develops suggested control measures, provides oversight of local programs, and prepares the SIP. The CARB also establishes emissions standards for motor vehicles sold in California, consumer products (i.e., hair spray, aerosol paints, and barbecue lighter fluid), and various types of commercial equipment. It also sets fuel specifications to further reduce vehicular emissions.
The CARB’s statewide comprehensive air toxics program was established in the early 1980s. The Toxic Air Contaminant Identification and Control Act created California's program to reduce exposure to air toxics. Under the Toxic Air Contaminant Identification and Control Act, the CARB is required to prioritize the identification and control of air toxics emissions. In selecting substances for review, the CARB must consider criteria relating to the risk of harm to public health, such as amount or potential amount of emissions, manner of and exposure to usage of the substance in California, persistence in the atmosphere, and ambient concentrations in the community. The Toxic Air Contaminant Identification and Control Act also requires CARB to use available information gathered from the Air Toxics Hot Spots Information and Assessment Act to include in the prioritization of compounds.
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Regional Regulations
Regional Transportation Plan. Federal law (23 USC Section 134 et seq.) requires that regional planning in any urbanized area having a population of 50,000 or more be guided and maintained by a regional entity known as an MPO. The Southern California Association of Governments (SCAG) is the MPO for the project area and also serves as the Regional Transportation Planning Agency. The SCAG region encompasses six counties—Imperial, Los Angeles, Orange, Riverside, San Bernardino and Ventura—and 191 cities in an area covering more than 38,000 square miles.
SCAG is required to prepare and update a long-range RTP every 4 years under federal law, and California Senate Bill 375—codified in 2008 in California Government Code Section 65080 (b)(2)(B)— also requires that the RTP include a Sustainable Communities Strategy (SCS). SCAG’s most recently adopted plan is Connect SoCal 2024–2050 Regional Transportation Plan/Sustainable Communities Strategy (Connect SoCal 2024–2050), which was adopted by the SCAG Regional Council on April 4, 2024, and received federal approval from the FHWA and FTA on May 10, 2024. The proposed project is programmed in the Connect SoCal 2024–2050 Financially Constrained Projects list under RTP Identification 2L220 as “OC Bikeways.”
South Coast Air Quality Management District. The South Coast Air Quality Management District (SCAQMD) was created for planning, implementing and enforcing air quality standards for the South Coast Air Basin (Basin), which includes all of Orange County, Los Angeles County (excluding the Antelope Valley portion), the western non-desert portion of San Bernardino County and the western Coachella Valley and San Gorgonio Pass portions of Riverside County. The Basin is an approximately 6,745-square-mile area bounded by the Pacific Ocean to the west and the San Gabriel, San Bernardino and San Jacinto mountains to the north and east. The Basin is a subregion in the western portion of the SCAQMD jurisdiction. While air quality in the Basin has improved, the Basin requires continued diligence to meet the air quality standards.
SCAQMD is tasked with preparing regional programs and policies designed to improve air quality in the Basin, which are assessed and published in the form of the SCAQMD Air Quality Management Plan (AQMP). The AQMP is generally updated every 3 to 4 years to evaluate the effectiveness of the adopted programs and policies and to forecast attainment dates for nonattainment pollutants to support the SIP based on measured regional air quality and anticipated implementation of new technologies and emissions reductions. The most recent publication is the 2022 AQMP, which was adopted by the SCAQMD Governing Board on December 2, 2022. The 2022 AQMP is primarily focused on achieving attainment of the 2015 8-hour O3 standard of 70 parts per million and builds upon the emission reductions strategies stated in previous AQMPs, including the 2016 AQMP, which focused on demonstrating NAAQS attainment dates for the 2008 8-hour O3 standard, the 2012 annual PM2.5 standard and the 2006 24-hour PM2.5 standard.
The 2022 AQMP control measures are predominately oriented toward reducing NOX emissions as it is the key pollutant in contributing to the formation of O3 in the atmosphere. Additionally, reducing NOX emissions would also reduce the secondary formation of PM2.5, thus supporting efforts to meet PM2.5 standards. The 2022 AQMP states that NOX emissions would need to be reduced by 67 percent by 2037 for the region to attain the 2015 8-hour O3 NAAQS. Emission reduction strategies to meet the standard will build upon already strict regulations for stationary and tailpipe sources and will also rely on adoption and implementation of zero-emission technologies and low-NOX technologies.
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SCAQMD has also established various rules to manage and improve air quality in the Basin. SCAQMD rules and regulations pertinent to project-related to construction activities include, but not limited to:
• Regulation IV, Prohibitions: This regulation sets forth the restrictions for visible emissions, odor nuisance, fugitive dust, various air emissions, fuel contaminants, start-up/shutdown exemptions and breakdown events, including the following rules directly applicable to the proposed project:
o Rule 401 (Visible Emissions) states that a person shall not discharge into the atmosphere from any single source of emission whatsoever any air contaminant for a period or periods aggregating more than three minutes in any one hour which is as dark or darker in shade as that designated No 1. on the Ringelmann Chart or of such opacity as to obscure an observer’s view.
o Rule 402 (Nuisance) states that a person should not emit air contaminants or other material which cause injury, detriment, nuisance or annoyance to any considerable number of persons or to the public, or which endanger the comfort, repose, health or safety of any such persons or the public, or which cause, or have a natural tendency to cause, injury or damage to business or property.
o Rule 403 (Fugitive Dust) controls fugitive dust through various requirements including, but not limited to, applying water in sufficient quantities to prevent the generation of visible dust plumes, applying soil binders to uncovered areas, reestablishing ground cover as quickly as possible, utilizing a wheel washing system to remove bulk material from tires and vehicle undercarriages before vehicles exit the project site, and maintaining effective cover over exposed areas. Rule 403 also prohibits the release of fugitive dust emissions from any active operation, open storage piles or disturbed surface area beyond the property line of the emission source and prohibits particulate matter deposits on public roadways.
• Regulation XI, Source-Specific Standards: Regulation XI sets emissions standards for specific sources, including the following rules most relevant to the proposed:
o Rule 1113 (Architectural Coatings) requires manufacturers, distributors and end users of architectural and industrial maintenance coatings to reduce VOC emissions from the use of these coatings, primarily by placing limits on the VOC content of various coating categories. Rule 1113 contains VOC limits for coatings used in roadway traffic markings.
o Rule 1186 (PM10 Emissions from Paved and Unpaved Roads and Livestock Operations) applies to owners and operators of paved and unpaved roads and livestock operations. The rule is intended to reduce PM10 emissions by requiring the cleanup of material deposited onto paved roads, use of certified street sweeping equipment and treatment of high-use unpaved roads.
EXISTING ENVIRONMENTAL SETTING
The basis for characterizing the existing environmental setting in the project area includes the regional attainment status of the Orange County portion of the Basin for the NAAQS and CAAQS, as well as locally monitored concentrations of regulated pollutants.
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Regional Air Quality Conditions
The proposed project is located entirely within the attainment designation area of the Orange County portion of the Basin. Table 2 presents a summary of the NAAQS attainment designations of the project area. As shown, the project area is currently designated as nonattainment of the NAAQS for 8- hour average O3 (Extreme Nonattainment), 24-hour average and annual average PM2.5, and maintenance of the 24-hour average PM10 (previously Serious Nonattainment) NAAQS. Based on the PM2.5 nonattainment designations, the Project would be subject to hot-spot considerations under the project level conformity requirements if it were not exempt. The proposed project is also within a CAAQS nonattainment area for the 1-hour and 8-hour O3 standards, the 24-hour and annual average PM10 standards, and the annual average PM2.5 standard.
TABLE 2: ORANGE COUNTY ATTAINMENT STATUS DESIGNATIONS
Pollutant Averaging Time CAAQS NAAQS
Ozone
(O3)
1-Hour Nonattainment --
8-Hour Nonattainment Nonattainment (Extreme)
Carbon Monoxide
(CO)
1-Hour Attainment Attainment (Maintenance)
8-Hour Attainment Attainment (Maintenance)
Nitrogen Dioxide
(NO2)
1-Hour Attainment Unclassifiable/Attainment
Annual Average Attainment Attainment (Maintenance)
Sulfur Dioxide
(SO2)
1-Hour Attainment Unclassifiable/Attainment
24-Hour Attainment Unclassifiable/Attainment
Respirable Particulate Matter
(PM10)
24-Hour Nonattainment Maintenance (Serious)
Annual Average Nonattainment --
Fine Particulate Matter
(PM2.5)
24-Hour -- Nonattainment (Moderate)
Annual Average Nonattainment Nonattainment (Moderate)
Lead
(Pb)
30-Day Average Attainment --
3-Month Average -- Attainment
Visibility Reducing Particles 8-Hour Attainment No National Standard Sulfates 24-Hour Attainment No National Standard
Hydrogen Sulfide 1-Hour Attainment No National Standard Vinyl Chloride 24-Hour No Attainment Information No National Standard Note: CAAQS = California Ambient Air Quality Standard; NAAQS = National Ambient Air Quality Standard.
SOURCE: SCAQMD, 2024.
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Local Air Quality Conditions
The federal and state attainment status designations are based on concentrations of air pollutants measured at air monitoring sites throughout the Basin. The SCAQMD currently operates a total of 34 active air monitoring sites that are used to characterize air quality within its jurisdiction. The monitoring site providing data that is most representative of the project area is the Anaheim site located approximately 11.5 miles west-southwest of the proposed project. Recent monitoring data collected at the Anaheim site over the past five years are displayed in Table 3, along with the NAAQS and CAAQS and the frequencies of the ambient air quality standards being exceeded in each year. As shown below, there were no instances of concentrations of CO or NO2 exceeding an air quality standard in any year. Concentrations of O3 exceeded the applicable 1-hour and 8-hour average standards in every year except 2021, and concentrations of PM2.5 exceeded the 24-hour average NAAQS in every year except 2022. The data are demonstrative of the regional nonattainment designations summarized in Table 2.
TABLE 3: PROJECT AREA AIR MONITORING DATA STATISTICS
Pollutant Air Quality Metrics
Maximum Concentrations and
Frequencies of Exceeded Standards by Year
2020 2021 2022 2023 2024
Ozone
(O3)
Maximum 1-hr. Concentration (ppm)
# Days > 0.09 ppm (CAAQS)
Maximum 8-hr. Concentration (ppm)
# Days > 0.07 ppm (NAAQS/CAAQS)
0.142
6 0.097
15 0.089
0 0.068
0 0.102
1 0.076
1 0.089
0 0.076
2 0.104
>1
0.079
4 Carbon Monoxide
(CO)
Maximum 1-hr. Concentration (ppm)
# Days > 20 ppm (NAAQS/CAAQS)
Maximum 8-hr. Concentration (ppm)
# Days > 9 ppm (NAAQS/CAAQS)
2.3 0
1.7 0
2.1 0
1.5 0
2.4 0
1.4 0
2.5 0
1.6 0
2.7 0
2.4 0
Nitrogen Dioxide
(NO2)
Maximum 1-hr. Concentration (ppm)
# Days > 0.180 ppm (CAAQS)
# Days > 0.100 ppm (NAAQS)
0.071
0 0
0.067
0 0
0.053
0 0
0.051
0 0
0.056
0 0
Respirable
Particulate Matter
(PM10)
Maximum 24-hr. Concentration (µg/m3)
# Days > 50 µg/m3(CAAQS)
# Days > 150 µg/m3(NAAQS)
Annual Concentration (µg/m3)
Exceed 20 µg/m3(CAAQS)?
120
7 0
26.1 Yes
115
12 0
23.2 Yes
90.0 7
0 22.3
Yes
146
7 0
24.0 Yes
118
>3
0 23.4
Yes
Fine
Particulate Matter
(PM2.5)
Maximum 24-hr. Concentration (µg/m3)
# Days > 35 µg/m3(NAAQS)
Annual Concentration (µg/m3)
Exceed 12.0 µg/m3(CAAQS)?
Exceed 9.0 µg/m3(NAAQS)?
64.8 12
12.4 Yes
Yes
54.4 10
11.6 No
Yes
33.1 0
9.9 No
Yes
45.6 1
9.1 No
Yes
49.7 2
11.0 No
Yes
SRA = Source Receptor Area; NAAQS = National Ambient Air Quality Standard; CAAQS = California Ambient Air Quality Standard; ppm = parts per million concentration; µg/m3 = micrograms per cubic meter concentration.
SOURCE: CARB, iADAM: Air Quality Data Statistics – Top 4 Summary, Accessed May 14, 2025; SCAQMD, Historical Data By Year (2020, 2021, 2022, 2023 Air Quality Data Tables), Accessed March 14, 2025; U.S. EPA, Monitor Values Report –Orange County, Accessed May 14, 2025.
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ASSESSMENT OF AIR QUALITY EFFECTS
The analysis of air quality impacts pursuant to NEPA considers the conformity status of the project area, temporary effects of air pollutant emissions during construction activities, permanent emissions resulting from long-term operation of the proposed project, emissions of MSAT, the potential for exposures to NOA and structural asbestos, and the potential for exposures to Pb.
Transportation Conformity
Conformity is a requirement of the CAA (Section 176(c), at 42 United States Code 7506(c)), to ensure that federal actions are consistent with the SIP to achieve and maintain federal air quality standards.
Transportation Conformity only applies in areas that are designated nonattainment or maintenance for NAAQS. The proposed project is located in a nonattainment area for O3 and PM2.5. However, the proposed project is exempt from the requirement to determine conformity based on 40 CFR Section
93.126 under the classification of “bike and pedestrian facilities.” The proposed project is also specifically exempt from regional conformity under 40 CFR 93.127 being designated as an “intersection channelization project.” Although it is exempt from conformity requirements, the proposed project is accurately listed in the Connect SoCal 2024–2050 RTP/SCS list of financially constrained projects, and therefore would satisfy project-level conformity.
Temporary Effects (Construction)
Ozone Precursor and Criteria Pollutant Emissions. Construction activities associated with implementation of the proposed project would generate emissions of air pollutants through exhaust from heavy-duty off-road diesel equipment, mobile trips of workers, hauling, and vendors to and from the project site, and fugitive dust PM produced by disturbance of unpaved ground surfaces and movement of displaced material. These area and on-road/offroad mobile sources would generate emissions of O3 precursors (volatile organic compounds [VOC] and NOX) and criteria pollutants (CO, SOX, PM10, and PM2.5) during construction activities, as well as emissions of toxic air contaminants such as DPM.
Construction of the proposed project is anticipated to begin in the first quarter of 2027 and be completed in the second quarter of 2028, with a total duration of approximately 13 months. The total project area is approximately 6.65 acres, and it was determined that no more than approximately one acre would be disturbed on a daily basis during the most intensive grading and excavation activities.
The California Emissions Estimator Model (CalEEMod, Version 2022.1.1) was used to characterize maximum daily emissions of O3 precursors and criteria pollutants that would be generated during proposed project construction for comparison to the SCAQMD air quality significance thresholds screening values. Table 4 presents the results of the emissions modeling by the phase of construction and location of the emissions sources, and discloses the peak daily emissions. The emissions analysis accounted for best management practices to control fugitive dust emissions in compliance with SCAQMD Rule 403, including, but not limited to, the application of water to disturbed unpaved ground areas and material stockpiles, sweeping of paved roads, stabilization of backfill, pre-watering of cut and fill areas, and limiting vehicle travel speeds on unpaved areas to 15 miles per hour. Additionally, equipment would be required to be maintained in accordance with manufacturer specifications and would not be allowed to idle for more than five minutes as required by CARB Airborne Toxics Control Measure (ATCM) codified in Title 13, California Code of Regulations, Section 2485. These control methods would prevent the occurrence of excess diesel PM emissions. As shown below, peak daily emissions during construction of the proposed project would not exceed the applicable SCAQMD air quality significance thresholds screening values.
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TABLE 4: ESTIMATED DAILY EMISSIONS – CONSTRUCTION
Phase and Emission Source Location
Daily Emissions (lbs/day)
VOC NOX CO SOX PM10 PM2.5
SITE PREPARATION (GRUBBING & CLEARING)
On-Site Emissions 0.7 7.2 10.8 <0.1 0.9 0.3
Off-Site Emissions 0.1 2.0 2.4 <0.1 0.9 0.3
Total 0.8 9.2 13.3 <0.1 1.8 0.6
GRADING & EXCAVATION
On-Site Emissions 0.9 9.0 13.8 <0.1 0.9 0.4
Off-Site Emissions 0.2 2.7 3.2 <0.1 1.2 0.3
Total 1.1 11.7 17.0 <0.1 2.1 0.7
DRAINAGE, UTILITIES, AND SUB-GRADE WORK
On-Site Emissions 1.0 9.4 13.4 <0.1 0.7 0.3
Off-Site Emissions 0.1 1.7 2.4 <0.1 0.8 0.2
Total 1.2 11.1 15.8 <0.1 1.5 0.5
PAVING AND ROADWAY RESTORATION
On-Site Emissions 0.8 6.3 10.5 <0.1 0.6 0.3
Off-Site Emissions 0.1 1.6 2.3 <0.1 0.9 0.2
Total 0.9 8.3 12.8 <0.1 1.5 0.5
REGIONAL IMPACTS ANALYSIS
Maximum Daily Emissions 1.2 11.7 17.0 <0.1 2.1 0.7
Regional Significance Threshold 75 100 550 150 150 55
Exceed Regional Threshold? No No No No No No
Note: Emissions modeling files can be found in the technical Appendix.
SOURCE: TAHA, 2025.
Naturally Occurring Asbestos (NOA) and Structural Asbestos. NOA has been identified as a TAC by the CARB. Under the CARB ATCM for Construction, Grading, Quarrying, and Surface Mining Operations, prior to any grading activities a geologic evaluation should be conducted to determine if NOA is present within the area that will be disturbed. NOA can be released from serpentinite and ultramafic rocks when the rock is broken or crushed. If NOA is not present, an exemption request must be filed with the APCD. The California Department of Conservation, Division of Mines and Geology has prepared a map of asbestos areas, which does not indicate that the proposed project is in an area containing NOA. Therefore, the proposed project is exempt from the geologic evaluation and NOA is not a concern for the proposed project.
Additionally, demolition activities can have potential negative air quality impacts, including issues surrounding proper handling, demolition, and disposal of asbestos containing material (ACM). ACM could be encountered during demolition or remodeling of existing buildings. Construction activities associated with the proposed project do not involve the demolition or remodeling of any existing buildings, and therefore this element of ACM risks is not relevant. Asbestos can also be found in utility pipes/pipelines (transite pipes or insulation on pipes). If utility pipelines are scheduled for removal or relocation, various regulatory requirements may apply, including the requirements stipulated in the National Emission Standard for Hazardous Air Pollutants (40 Code of Federal Regulations 61, Subpart M – asbestos NESHAP).
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Permanent Effects (Operations)
Criteria Pollutant and Ozone Precursor Emissions. Implementation of the proposed project would install roadway features to provide enhanced pedestrian and bicycle connectivity and would not alter roadway capacity relative to existing conditions. As stated above, the proposed project is exempt from transportation conformity requirements, and therefore a hot-spot analysis is not applicable. Long-term future operation of the proposed project would not introduce a new source of air pollutant emissions to the project area and would not generate new vehicle trips. The proposed project would encourage active transportation by providing a new off-street multi-use trail along Savi Ranch Parkway and Mirage Street and a new Class IV separated bikeway along Old Canal Road. The proposed project would not result in any changes to daily traffic volumes and no adverse air quality effects would occur.
MSAT Emissions. The purpose of the proposed project is to alleviate substantial peak hour congestion and vehicle queuing along Savi Ranch Parkway—which serves as the only point of ingress/egress to Savi Ranch—and enhance pedestrian safety by constructing an additional westbound left-turn lane at the intersection with Yorba Linda Boulevard and eliminating right turn lanes on Savi Ranch Parkway at Mirage Street, on Yorba Linda Boulevard at Savi Ranch Parkway, and on Mirage Street at Savi Ranch Parkway. The proposed project would not change through lane capacity on any roadway in the project area. This project has been determined to generate minimal air quality impacts for Clean Air Act criteria pollutants and has not been linked with any special MSAT concerns. As such, implementation of the proposed project will not result in changes in traffic volumes, vehicle mix, basic project location, or any other factor that would cause a meaningful increase in MSAT impacts of the project from that of the no-build alternative.
Moreover, USEPA regulations for vehicle engines and fuels will cause overall MSAT emissions to decline significantly over the next several decades. Based on regulations now in effect, an analysis of national trends with USEPA’s MOVES3 model forecasts a combined reduction of over 76 percent in the total annual emissions rate for the priority MSAT from 2020 to 2060 while vehicle-miles of travel are projected to increase by 31 percent (Updated Interim Guidance on Mobile Source Air Toxic Analysis in NEPA Documents, Federal Highway Administration, January 18, 2023). This will both reduce the background level of MSAT as well as the possibility of even minor MSAT emissions from the proposed project.
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LIST OF PREPARERS
Sam Silverman, Senior Associate. M.S., Environmental Health, University of California at Los Angeles, 23 years of experience. Contribution: Task Manager.
Anders Sutherland, Senior Air Quality Specialist. B.S., Atmospheric, Oceanic, & Environmental Sciences, University of California at Los Angeles, 15 years of experience. Contribution: Analyst and Author.
Karen To, Air Quality Specialist. B.S., Earth Systems Science, University of California at Irvine, 2 years of experience. Contribution: Analyst.
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Savi Ranch Parkway Widening/Connect Savi Ranch Detailed Report Table of Contents
1. Basic Project Information
1.1. Basic Project Information
1.2. Land Use Types
1.3. User-Selected Emission Reduction Measures by Emissions Sector
2. Emissions Summary
2.1. Construction Emissions Compared Against Thresholds
2.2. Construction Emissions by Year, Unmitigated
2.3. Construction Emissions by Year, Mitigated
3. Construction Emissions Details
3.1. Linear, Grubbing & Land Clearing (2027) - Unmitigated
3.2. Linear, Grubbing & Land Clearing (2027) - Mitigated
3.3. Linear, Grading & Excavation (2027) - Unmitigated
3.4. Linear, Grading & Excavation (2027) - Mitigated
3.5. Linear, Drainage, Utilities, & Sub-Grade (2027) - Unmitigated
3.6. Linear, Drainage, Utilities, & Sub-Grade (2027) - Mitigated
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3.7. Linear, Drainage, Utilities, & Sub-Grade (2028) - Unmitigated
3.8. Linear, Drainage, Utilities, & Sub-Grade (2028) - Mitigated
3.9. Linear, Paving (2028) - Unmitigated
3.10. Linear, Paving (2028) - Mitigated
4. Operations Emissions Details
4.10. Soil Carbon Accumulation By Vegetation Type
4.10.1. Soil Carbon Accumulation By Vegetation Type - Unmitigated
4.10.2. Above and Belowground Carbon Accumulation by Land Use Type - Unmitigated
4.10.3. Avoided and Sequestered Emissions by Species - Unmitigated
4.10.4. Soil Carbon Accumulation By Vegetation Type - Mitigated
4.10.5. Above and Belowground Carbon Accumulation by Land Use Type - Mitigated
4.10.6. Avoided and Sequestered Emissions by Species - Mitigated
5. Activity Data
5.1. Construction Schedule
5.2. Off-Road Equipment
5.2.1. Unmitigated
5.2.2. Mitigated
5.3. Construction Vehicles
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5.3.1. Unmitigated
5.3.2. Mitigated
5.4. Vehicles
5.4.1. Construction Vehicle Control Strategies
5.5. Architectural Coatings
5.6. Dust Mitigation
5.6.1. Construction Earthmoving Activities
5.6.2. Construction Earthmoving Control Strategies
5.7. Construction Paving
5.8. Construction Electricity Consumption and Emissions Factors
5.18. Vegetation
5.18.1. Land Use Change
5.18.1.1. Unmitigated
5.18.1.2. Mitigated
5.18.1. Biomass Cover Type
5.18.1.1. Unmitigated
5.18.1.2. Mitigated
5.18.2. Sequestration
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5.18.2.1. Unmitigated
5.18.2.2. Mitigated
6. Climate Risk Detailed Report
6.1. Climate Risk Summary
6.2. Initial Climate Risk Scores
6.3. Adjusted Climate Risk Scores
6.4. Climate Risk Reduction Measures
6.4.1. Temperature and Extreme Heat
7. Health and Equity Details
7.1. CalEnviroScreen 4.0 Scores
7.2. Healthy Places Index Scores
7.3. Overall Health & Equity Scores
7.4. Health & Equity Measures
7.5. Evaluation Scorecard
7.6. Health & Equity Custom Measures
8. User Changes to Default Data
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1. Basic Project Information
1.1. Basic Project Information
Data Field Value
Project Name Savi Ranch Parkway Widening/Connect Savi Ranch Construction Start Date 3/1/2027
Lead Agency City of Yorba Linda
Land Use Scale Project/site
Analysis Level for Defaults County
Windspeed (m/s) 2.60
Precipitation (days) 21.0
Location 33.87406777404996, -117.7444652993448
County Orange
City Yorba Linda
Air District South Coast AQMD
Air Basin South Coast
TAZ 5797
EDFZ 7
Electric Utility Southern California Edison
Gas Utility Southern California Gas
App Version 2022.1.1.29
1.2. Land Use Types
Land Use Subtype Size Unit Lot Acreage Building Area (sq ft) Landscape Area (sq ft)
Special Landscape
Area (sq ft)
Population Description
Road Widening 0.75 Mile 6.65 0.00 — — — Sum of roadway
segments.
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1.3. User-Selected Emission Reduction Measures by Emissions Sector Sector # Measure Title
Construction C-2* Limit Heavy-Duty Diesel Vehicle Idling * Qualitative or supporting measure. Emission reductions not included in the mitigated emissions results.
2. Emissions Summary
2.1. Construction Emissions Compared Against Thresholds Criteria Pollutants (lb/day for daily, ton/yr for annual) and GHGs (lb/day for daily, MT/yr for annual) Un/Mit. ROG NOx CO SO2 PM10E PM10D PM10T PM2.5E PM2.5D PM2.5T BCO2 NBCO2 CO2T CH4 N2O R CO2e Daily,
Summer
(Max)
— — — — — — — — — — — — — — — — —
Unmit. 1.06 11.7 17.0 0.04 0.36 1.72 2.08 0.34 0.35 0.69 — 4,893 4,893 0.26 0.40 6.03 5,025 Mit. 1.06 11.7 17.0 0.04 0.36 1.72 2.08 0.34 0.35 0.69 — 4,893 4,893 0.26 0.40 6.03 5,025 %
Reduced
— — — — — — — — — — — — — — — — —
Daily,
Winter
(Max)
— — — — — — — — — — — — — — — — —
Unmit. 1.15 11.9 16.8 0.04 0.36 1.72 2.08 0.34 0.35 0.69 — 4,869 4,869 0.27 0.40 0.16 4,996 Mit. 1.15 11.9 16.8 0.04 0.36 1.72 2.08 0.34 0.35 0.69 — 4,869 4,869 0.27 0.40 0.16 4,996 %
Reduced
— — — — — — — — — — — — — — — — —
Average
Daily
(Max)
— — — — — — — — — — — — — — — — —
Unmit. 0.63 6.77 9.61 0.02 0.20 0.91 1.10 0.18 0.19 0.37 — 2,648 2,648 0.14 0.20 1.37 2,714 Mit. 0.63 6.77 9.61 0.02 0.20 0.91 1.10 0.18 0.19 0.37 — 2,648 2,648 0.14 0.20 1.37 2,714 %
Reduced
— — — — — — — — — — — — — — — — —
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Annual
(Max)
— — — — — — — — — — — — — — — — —
Unmit. 0.12 1.24 1.75 < 0.005 0.04 0.17 0.20 0.03 0.03 0.07 — 438 438 0.02 0.03 0.23 449 Mit. 0.12 1.24 1.75 < 0.005 0.04 0.17 0.20 0.03 0.03 0.07 — 438 438 0.02 0.03 0.23 449 %
Reduced
— — — — — — — — — — — — — — — — —
Exceeds
(Daily
Max)
— — — — — — — — — — — — — — — — —
Threshol
d
75.0 100 550 150 — — 150 — — 55.0 — — — — — — —
Unmit. No No No No — — No — — No — — — — — — —
Mit. No No No No — — No — — No — — — — — — —
Exceeds
(Average
Daily)
— — — — — — — — — — — — — — — — —
Threshol
d
75.0 100 550 150 — — 150 — — 55.0 — — — — — — —
Unmit. No No No No — — No — — No — — — — — — —
Mit. No No No No — — No — — No — — — — — — —
2.2. Construction Emissions by Year, Unmitigated
Criteria Pollutants (lb/day for daily, ton/yr for annual) and GHGs (lb/day for daily, MT/yr for annual) Year ROG NOx CO SO2 PM10E PM10D PM10T PM2.5E PM2.5D PM2.5T BCO2 NBCO2 CO2T CH4 N2O R CO2e Daily -
Summer
(Max)
— — — — — — — — — — — — — — — — —
2027 1.06 11.7 17.0 0.04 0.36 1.72 2.08 0.34 0.35 0.69 — 4,893 4,893 0.26 0.40 6.03 5,025 2028 0.86 8.19 12.7 0.03 0.24 1.22 1.46 0.22 0.25 0.48 — 3,481 3,481 0.15 0.23 4.48 3,556 Daily -
Winter
(Max)
— — — — — — — — — — — — — — — — —
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2027 1.15 11.9 16.8 0.04 0.36 1.72 2.08 0.34 0.35 0.69 — 4,869 4,869 0.27 0.40 0.16 4,996 2028 1.12 10.8 15.7 0.03 0.27 1.26 1.52 0.25 0.26 0.51 — 3,852 3,852 0.18 0.24 0.12 3,927 Average
Daily
— — — — — — — — — — — — — — — — —
2027 0.63 6.77 9.61 0.02 0.20 0.91 1.10 0.18 0.19 0.37 — 2,648 2,648 0.14 0.20 1.37 2,714 2028 0.18 1.76 2.63 0.01 0.05 0.23 0.28 0.04 0.05 0.09 — 692 692 0.03 0.05 0.35 706 Annual — — — — — — — — — — — — — — — — —
2027 0.12 1.24 1.75 < 0.005 0.04 0.17 0.20 0.03 0.03 0.07 — 438 438 0.02 0.03 0.23 449 2028 0.03 0.32 0.48 < 0.005 0.01 0.04 0.05 0.01 0.01 0.02 — 115 115 0.01 0.01 0.06 117
2.3. Construction Emissions by Year, Mitigated
Criteria Pollutants (lb/day for daily, ton/yr for annual) and GHGs (lb/day for daily, MT/yr for annual) Year ROG NOx CO SO2 PM10E PM10D PM10T PM2.5E PM2.5D PM2.5T BCO2 NBCO2 CO2T CH4 N2O R CO2e Daily -
Summer
(Max)
— — — — — — — — — — — — — — — — —
2027 1.06 11.7 17.0 0.04 0.36 1.72 2.08 0.34 0.35 0.69 — 4,893 4,893 0.26 0.40 6.03 5,025 2028 0.86 8.19 12.7 0.03 0.24 1.22 1.46 0.22 0.25 0.48 — 3,481 3,481 0.15 0.23 4.48 3,556 Daily -
Winter
(Max)
— — — — — — — — — — — — — — — — —
2027 1.15 11.9 16.8 0.04 0.36 1.72 2.08 0.34 0.35 0.69 — 4,869 4,869 0.27 0.40 0.16 4,996 2028 1.12 10.8 15.7 0.03 0.27 1.26 1.52 0.25 0.26 0.51 — 3,852 3,852 0.18 0.24 0.12 3,927 Average
Daily
— — — — — — — — — — — — — — — — —
2027 0.63 6.77 9.61 0.02 0.20 0.91 1.10 0.18 0.19 0.37 — 2,648 2,648 0.14 0.20 1.37 2,714 2028 0.18 1.76 2.63 0.01 0.05 0.23 0.28 0.04 0.05 0.09 — 692 692 0.03 0.05 0.35 706 Annual — — — — — — — — — — — — — — — — —
2027 0.12 1.24 1.75 < 0.005 0.04 0.17 0.20 0.03 0.03 0.07 — 438 438 0.02 0.03 0.23 449 2028 0.03 0.32 0.48 < 0.005 0.01 0.04 0.05 0.01 0.01 0.02 — 115 115 0.01 0.01 0.06 117
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3. Construction Emissions Details
3.1. Linear, Grubbing & Land Clearing (2027) - Unmitigated Criteria Pollutants (lb/day for daily, ton/yr for annual) and GHGs (lb/day for daily, MT/yr for annual) Location ROG NOx CO SO2 PM10E PM10D PM10T PM2.5E PM2.5D PM2.5T BCO2 NBCO2 CO2T CH4 N2O R CO2e Onsite — — — — — — — — — — — — — — — — —
Daily,
Summer
(Max)
— — — — — — — — — — — — — — — — —
Off-Road
Equipment
0.72 7.17 10.8 0.02 0.28 — 0.28 0.26 — 0.26 — 1,630 1,630 0.07 0.01 — 1,636 Dust
From
Material
Movement
— — — — — 0.21 0.21 — 0.02 0.02 — — — — — — —
Onsite
truck
< 0.005 0.03 0.02 < 0.005 < 0.005 0.37 0.37 < 0.005 0.04 0.04 — 9.71 9.71 < 0.005 < 0.005 0.01 10.2 Daily,
Winter
(Max)
— — — — — — — — — — — — — — — — —
Off-Road
Equipment
0.72 7.17 10.8 0.02 0.28 — 0.28 0.26 — 0.26 — 1,630 1,630 0.07 0.01 — 1,636 Dust
From
Material
Movement
— — — — — 0.21 0.21 — 0.02 0.02 — — — — — — —
Onsite
truck
< 0.005 0.03 0.02 < 0.005 < 0.005 0.37 0.37 < 0.005 0.04 0.04 — 9.76 9.76 < 0.005 < 0.005 < 0.005 10.3 Average
Daily
— — — — — — — — — — — — — — — — —
Off-Road
Equipment
0.06 0.59 0.89 < 0.005 0.02 — 0.02 0.02 — 0.02 — 134 134 0.01 < 0.005 — 134
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Dust — — — — — 0.02 0.02 — < 0.005 < 0.005 — — — — — — — From
Material
Movement
Onsite
truck
< 0.005 < 0.005 < 0.005 < 0.005 < 0.005 0.03 0.03 < 0.005 < 0.005 < 0.005 — 0.80 0.80 < 0.005 < 0.005 < 0.005 0.84 Annual — — — — — — — — — — — — — — — — —
Off-Road
Equipment
0.01 0.11 0.16 < 0.005 < 0.005 — < 0.005 < 0.005 — < 0.005 — 22.2 22.2 < 0.005 < 0.005 — 22.3 Dust
From
Material
Movement
— — — — — < 0.005 < 0.005 — < 0.005 < 0.005 — — — — — — — Onsite
truck
< 0.005 < 0.005 < 0.005 < 0.005 < 0.005 0.01 0.01 < 0.005 < 0.005 < 0.005 — 0.13 0.13 < 0.005 < 0.005 < 0.005 0.14 Offsite — — — — — — — — — — — — — — — — —
Daily,
Summer
(Max)
— — — — — — — — — — — — — — — — —
Worker 0.09 0.10 1.58 0.00 0.00 0.42 0.42 0.00 0.10 0.10 — 410 410 < 0.005 0.02 1.30 416 Vendor 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 — 0.00 0.00 0.00 0.00 0.00 0.00 Hauling 0.02 1.90 0.85 0.01 0.02 0.43 0.46 0.02 0.12 0.14 — 1,613 1,613 0.12 0.26 3.07 1,697 Daily,
Winter
(Max)
— — — — — — — — — — — — — — — — —
Worker 0.09 0.10 1.36 0.00 0.00 0.42 0.42 0.00 0.10 0.10 — 390 390 < 0.005 0.02 0.03 395 Vendor 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 — 0.00 0.00 0.00 0.00 0.00 0.00 Hauling 0.02 1.98 0.86 0.01 0.02 0.43 0.46 0.02 0.12 0.14 — 1,613 1,613 0.12 0.26 0.08 1,694 Average
Daily
— — — — — — — — — — — — — — — — —
Worker 0.01 0.01 0.12 0.00 0.00 0.03 0.03 0.00 0.01 0.01 — 32.5 32.5 < 0.005 < 0.005 0.05 32.9 Vendor 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 — 0.00 0.00 0.00 0.00 0.00 0.00 Hauling < 0.005 0.16 0.07 < 0.005 < 0.005 0.04 0.04 < 0.005 0.01 0.01 — 133 133 0.01 0.02 0.11 139 Annual — — — — — — — Page 337 of 2424 — — — — — — — — — — Savi Ranch Parkway Widening/Connect Savi Ranch Detailed Report, 5/18/2025 11 / 46
Worker < 0.005 < 0.005 0.02 0.00 0.00 0.01 0.01 0.00 < 0.005 < 0.005 — 5.38 5.38 < 0.005 < 0.005 0.01 5.45 Vendor 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 — 0.00 0.00 0.00 0.00 0.00 0.00 Hauling < 0.005 0.03 0.01 < 0.005 < 0.005 0.01 0.01 < 0.005 < 0.005 < 0.005 — 21.9 21.9 < 0.005 < 0.005 0.02 23.1
3.2. Linear, Grubbing & Land Clearing (2027) - Mitigated Criteria Pollutants (lb/day for daily, ton/yr for annual) and GHGs (lb/day for daily, MT/yr for annual) Location ROG NOx CO SO2 PM10E PM10D PM10T PM2.5E PM2.5D PM2.5T BCO2 NBCO2 CO2T CH4 N2O R CO2e Onsite — — — — — — — — — — — — — — — — —
Daily,
Summer
(Max)
— — — — — — — — — — — — — — — — —
Off-Road
Equipment
0.72 7.17 10.8 0.02 0.28 — 0.28 0.26 — 0.26 — 1,630 1,630 0.07 0.01 — 1,636 Dust
From
Material
Movement
— — — — — 0.21 0.21 — 0.02 0.02 — — — — — — —
Onsite
truck
< 0.005 0.03 0.02 < 0.005 < 0.005 0.37 0.37 < 0.005 0.04 0.04 — 9.71 9.71 < 0.005 < 0.005 0.01 10.2 Daily,
Winter
(Max)
— — — — — — — — — — — — — — — — —
Off-Road
Equipment
0.72 7.17 10.8 0.02 0.28 — 0.28 0.26 — 0.26 — 1,630 1,630 0.07 0.01 — 1,636 Dust
From
Material
Movement
— — — — — 0.21 0.21 — 0.02 0.02 — — — — — — —
Onsite
truck
< 0.005 0.03 0.02 < 0.005 < 0.005 0.37 0.37 < 0.005 0.04 0.04 — 9.76 9.76 < 0.005 < 0.005 < 0.005 10.3 Average
Daily
— — — — — — — — — — — — — — — — —
Off-Road
Equipment
0.06 0.59 0.89 < 0.005 0.02 — 0.02 0.02 — 0.02 — 134 134 0.01 < 0.005 — 134
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Dust
From
Material
Movement
— — — — — 0.02 0.02 — < 0.005 < 0.005 — — — — — — —
Onsite
truck
< 0.005 < 0.005 < 0.005 < 0.005 < 0.005 0.03 0.03 < 0.005 < 0.005 < 0.005 — 0.80 0.80 < 0.005 < 0.005 < 0.005 0.84 Annual — — — — — — — — — — — — — — — — —
Off-Road
Equipment
0.01 0.11 0.16 < 0.005 < 0.005 — < 0.005 < 0.005 — < 0.005 — 22.2 22.2 < 0.005 < 0.005 — 22.3 Dust
From
Material
Movement
— — — — — < 0.005 < 0.005 — < 0.005 < 0.005 — — — — — — — Onsite
truck
< 0.005 < 0.005 < 0.005 < 0.005 < 0.005 0.01 0.01 < 0.005 < 0.005 < 0.005 — 0.13 0.13 < 0.005 < 0.005 < 0.005 0.14 Offsite — — — — — — — — — — — — — — — — —
Daily,
Summer
(Max)
— — — — — — — — — — — — — — — — —
Worker 0.09 0.10 1.58 0.00 0.00 0.42 0.42 0.00 0.10 0.10 — 410 410 < 0.005 0.02 1.30 416 Vendor 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 — 0.00 0.00 0.00 0.00 0.00 0.00 Hauling 0.02 1.90 0.85 0.01 0.02 0.43 0.46 0.02 0.12 0.14 — 1,613 1,613 0.12 0.26 3.07 1,697 Daily,
Winter
(Max)
— — — — — — — — — — — — — — — — —
Worker 0.09 0.10 1.36 0.00 0.00 0.42 0.42 0.00 0.10 0.10 — 390 390 < 0.005 0.02 0.03 395 Vendor 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 — 0.00 0.00 0.00 0.00 0.00 0.00 Hauling 0.02 1.98 0.86 0.01 0.02 0.43 0.46 0.02 0.12 0.14 — 1,613 1,613 0.12 0.26 0.08 1,694 Average
Daily
— — — — — — — — — — — — — — — — —
Worker 0.01 0.01 0.12 0.00 0.00 0.03 0.03 0.00 0.01 0.01 — 32.5 32.5 < 0.005 < 0.005 0.05 32.9 Vendor 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 — 0.00 0.00 0.00 0.00 0.00 0.00 Hauling < 0.005 0.16 0.07 < 0.005 < 0.005 0.04 0.04 < 0.005 0.01 0.01 — 133 133 0.01 0.02 0.11 139 Annual — — — — — — — Page 339 of 2424 — — — — — — — — — — Savi Ranch Parkway Widening/Connect Savi Ranch Detailed Report, 5/18/2025 13 / 46
Worker < 0.005 < 0.005 0.02 0.00 0.00 0.01 0.01 0.00 < 0.005 < 0.005 — 5.38 5.38 < 0.005 < 0.005 0.01 5.45 Vendor 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 — 0.00 0.00 0.00 0.00 0.00 0.00 Hauling < 0.005 0.03 0.01 < 0.005 < 0.005 0.01 0.01 < 0.005 < 0.005 < 0.005 — 21.9 21.9 < 0.005 < 0.005 0.02 23.1
3.3. Linear, Grading & Excavation (2027) - Unmitigated
Criteria Pollutants (lb/day for daily, ton/yr for annual) and GHGs (lb/day for daily, MT/yr for annual) Location ROG NOx CO SO2 PM10E PM10D PM10T PM2.5E PM2.5D PM2.5T BCO2 NBCO2 CO2T CH4 N2O R CO2e Onsite — — — — — — — — — — — — — — — — —
Daily,
Summer
(Max)
— — — — — — — — — — — — — — — — —
Off-Road
Equipment
0.91 8.93 13.8 0.02 0.33 — 0.33 0.31 — 0.31 — 2,097 2,097 0.09 0.02 — 2,104 Dust
From
Material
Movement
— — — — — 0.21 0.21 — 0.02 0.02 — — — — — — —
Onsite
truck
< 0.005 0.03 0.02 < 0.005 < 0.005 0.37 0.37 < 0.005 0.04 0.04 — 9.71 9.71 < 0.005 < 0.005 0.01 10.2 Daily,
Winter
(Max)
— — — — — — — — — — — — — — — — —
Off-Road
Equipment
0.91 8.93 13.8 0.02 0.33 — 0.33 0.31 — 0.31 — 2,097 2,097 0.09 0.02 — 2,104 Dust
From
Material
Movement
— — — — — 0.21 0.21 — 0.02 0.02 — — — — — — —
Onsite
truck
< 0.005 0.03 0.02 < 0.005 < 0.005 0.37 0.37 < 0.005 0.04 0.04 — 9.76 9.76 < 0.005 < 0.005 < 0.005 10.3 Average
Daily
— — — — — — — — — — — — — — — — —
Off-Road
Equipment
0.31 3.06 4.74 0.01 0.11 — 0.11 0.11 — 0.11 — 718 718 0.03 0.01 — 721
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Dust
From
Material
Movement
— — — — — 0.07 0.07 — 0.01 0.01 — — — — — — —
Onsite
truck
< 0.005 0.01 0.01 < 0.005 < 0.005 0.12 0.12 < 0.005 0.01 0.01 — 3.33 3.33 < 0.005 < 0.005 < 0.005 3.51 Annual — — — — — — — — — — — — — — — — —
Off-Road
Equipment
0.06 0.56 0.86 < 0.005 0.02 — 0.02 0.02 — 0.02 — 119 119 < 0.005 < 0.005 — 119 Dust
From
Material
Movement
— — — — — 0.01 0.01 — < 0.005 < 0.005 — — — — — — —
Onsite
truck
< 0.005 < 0.005 < 0.005 < 0.005 < 0.005 0.02 0.02 < 0.005 < 0.005 < 0.005 — 0.55 0.55 < 0.005 < 0.005 < 0.005 0.58 Offsite — — — — — — — — — — — — — — — — —
Daily,
Summer
(Max)
— — — — — — — — — — — — — — — — —
Worker 0.11 0.12 1.98 0.00 0.00 0.52 0.52 0.00 0.12 0.12 — 512 512 0.01 0.02 1.62 520 Vendor < 0.005 0.12 0.06 < 0.005 < 0.005 0.03 0.04 < 0.005 0.01 0.01 — 123 123 0.01 0.02 0.29 129 Hauling 0.03 2.53 1.13 0.01 0.03 0.58 0.61 0.03 0.16 0.19 — 2,150 2,150 0.17 0.35 4.10 2,262 Daily,
Winter
(Max)
— — — — — — — — — — — — — — — — —
Worker 0.11 0.12 1.70 0.00 0.00 0.52 0.52 0.00 0.12 0.12 — 487 487 0.01 0.02 0.04 493 Vendor < 0.005 0.13 0.06 < 0.005 < 0.005 0.03 0.04 < 0.005 0.01 0.01 — 123 123 0.01 0.02 0.01 128 Hauling 0.03 2.64 1.14 0.01 0.03 0.58 0.61 0.03 0.16 0.19 — 2,151 2,151 0.17 0.35 0.11 2,259 Average
Daily
— — — — — — — — — — — — — — — — —
Worker 0.04 0.05 0.61 0.00 0.00 0.18 0.18 0.00 0.04 0.04 — 169 169 < 0.005 0.01 0.24 171 Vendor < 0.005 0.04 0.02 < 0.005 < 0.005 0.01 0.01 < 0.005 < 0.005 < 0.005 — 42.2 42.2 < 0.005 0.01 0.04 44.0 Hauling 0.01 0.91 0.39 0.01 0.01 0.20 0.21 0.01 0.06 0.06 — 737 737 0.06 0.12 0.61 774 Annual — — — — — — — Page 341 of 2424 — — — — — — — — — — Savi Ranch Parkway Widening/Connect Savi Ranch Detailed Report, 5/18/2025 15 / 46
Worker 0.01 0.01 0.11 0.00 0.00 0.03 0.03 0.00 0.01 0.01 — 28.0 28.0 < 0.005 < 0.005 0.04 28.4 Vendor < 0.005 0.01 < 0.005 < 0.005 < 0.005 < 0.005 < 0.005 < 0.005 < 0.005 < 0.005 — 6.98 6.98 < 0.005 < 0.005 0.01 7.28 Hauling < 0.005 0.17 0.07 < 0.005 < 0.005 0.04 0.04 < 0.005 0.01 0.01 — 122 122 0.01 0.02 0.10 128
3.4. Linear, Grading & Excavation (2027) - Mitigated
Criteria Pollutants (lb/day for daily, ton/yr for annual) and GHGs (lb/day for daily, MT/yr for annual) Location ROG NOx CO SO2 PM10E PM10D PM10T PM2.5E PM2.5D PM2.5T BCO2 NBCO2 CO2T CH4 N2O R CO2e Onsite — — — — — — — — — — — — — — — — —
Daily,
Summer
(Max)
— — — — — — — — — — — — — — — — —
Off-Road
Equipment
0.91 8.93 13.8 0.02 0.33 — 0.33 0.31 — 0.31 — 2,097 2,097 0.09 0.02 — 2,104 Dust
From
Material
Movement
— — — — — 0.21 0.21 — 0.02 0.02 — — — — — — —
Onsite
truck
< 0.005 0.03 0.02 < 0.005 < 0.005 0.37 0.37 < 0.005 0.04 0.04 — 9.71 9.71 < 0.005 < 0.005 0.01 10.2 Daily,
Winter
(Max)
— — — — — — — — — — — — — — — — —
Off-Road
Equipment
0.91 8.93 13.8 0.02 0.33 — 0.33 0.31 — 0.31 — 2,097 2,097 0.09 0.02 — 2,104 Dust
From
Material
Movement
— — — — — 0.21 0.21 — 0.02 0.02 — — — — — — —
Onsite
truck
< 0.005 0.03 0.02 < 0.005 < 0.005 0.37 0.37 < 0.005 0.04 0.04 — 9.76 9.76 < 0.005 < 0.005 < 0.005 10.3 Average
Daily
— — — — — — — — — — — — — — — — —
Off-Road
Equipment
0.31 3.06 4.74 0.01 0.11 — 0.11 0.11 — 0.11 — 718 718 0.03 0.01 — 721
Savi Ranch Parkway Widening/Connect Savi Ranch Detailed Report, 5/18/2025 16 / 46
Dust
From
Material
Movement
— — — — — 0.07 0.07 — 0.01 0.01 — — — — — — —
Onsite
truck
< 0.005 0.01 0.01 < 0.005 < 0.005 0.12 0.12 < 0.005 0.01 0.01 — 3.33 3.33 < 0.005 < 0.005 < 0.005 3.51 Annual — — — — — — — — — — — — — — — — —
Off-Road
Equipment
0.06 0.56 0.86 < 0.005 0.02 — 0.02 0.02 — 0.02 — 119 119 < 0.005 < 0.005 — 119 Dust
From
Material
Movement
— — — — — 0.01 0.01 — < 0.005 < 0.005 — — — — — — —
Onsite
truck
< 0.005 < 0.005 < 0.005 < 0.005 < 0.005 0.02 0.02 < 0.005 < 0.005 < 0.005 — 0.55 0.55 < 0.005 < 0.005 < 0.005 0.58 Offsite — — — — — — — — — — — — — — — — —
Daily,
Summer
(Max)
— — — — — — — — — — — — — — — — —
Worker 0.11 0.12 1.98 0.00 0.00 0.52 0.52 0.00 0.12 0.12 — 512 512 0.01 0.02 1.62 520 Vendor < 0.005 0.12 0.06 < 0.005 < 0.005 0.03 0.04 < 0.005 0.01 0.01 — 123 123 0.01 0.02 0.29 129 Hauling 0.03 2.53 1.13 0.01 0.03 0.58 0.61 0.03 0.16 0.19 — 2,150 2,150 0.17 0.35 4.10 2,262 Daily,
Winter
(Max)
— — — — — — — — — — — — — — — — —
Worker 0.11 0.12 1.70 0.00 0.00 0.52 0.52 0.00 0.12 0.12 — 487 487 0.01 0.02 0.04 493 Vendor < 0.005 0.13 0.06 < 0.005 < 0.005 0.03 0.04 < 0.005 0.01 0.01 — 123 123 0.01 0.02 0.01 128 Hauling 0.03 2.64 1.14 0.01 0.03 0.58 0.61 0.03 0.16 0.19 — 2,151 2,151 0.17 0.35 0.11 2,259 Average
Daily
— — — — — — — — — — — — — — — — —
Worker 0.04 0.05 0.61 0.00 0.00 0.18 0.18 0.00 0.04 0.04 — 169 169 < 0.005 0.01 0.24 171 Vendor < 0.005 0.04 0.02 < 0.005 < 0.005 0.01 0.01 < 0.005 < 0.005 < 0.005 — 42.2 42.2 < 0.005 0.01 0.04 44.0 Hauling 0.01 0.91 0.39 0.01 0.01 0.20 0.21 0.01 0.06 0.06 — 737 737 0.06 0.12 0.61 774 Annual — — — — — — — Page 343 of 2424 — — — — — — — — — — Savi Ranch Parkway Widening/Connect Savi Ranch Detailed Report, 5/18/2025 17 / 46
Worker 0.01 0.01 0.11 0.00 0.00 0.03 0.03 0.00 0.01 0.01 — 28.0 28.0 < 0.005 < 0.005 0.04 28.4 Vendor < 0.005 0.01 < 0.005 < 0.005 < 0.005 < 0.005 < 0.005 < 0.005 < 0.005 < 0.005 — 6.98 6.98 < 0.005 < 0.005 0.01 7.28 Hauling < 0.005 0.17 0.07 < 0.005 < 0.005 0.04 0.04 < 0.005 0.01 0.01 — 122 122 0.01 0.02 0.10 128
3.5. Linear, Drainage, Utilities, & Sub-Grade (2027) - Unmitigated Criteria Pollutants (lb/day for daily, ton/yr for annual) and GHGs (lb/day for daily, MT/yr for annual) Location ROG NOx CO SO2 PM10E PM10D PM10T PM2.5E PM2.5D PM2.5T BCO2 NBCO2 CO2T CH4 N2O R CO2e Onsite — — — — — — — — — — — — — — — — —
Daily,
Summer
(Max)
— — — — — — — — — — — — — — — — —
Daily,
Winter
(Max)
— — — — — — — — — — — — — — — — —
Off-Road
Equipment
1.01 9.36 13.4 0.02 0.28 — 0.28 0.25 — 0.25 — 2,070 2,070 0.08 0.02 — 2,077 Dust
From
Material
Movement
— — — — — < 0.005 < 0.005 — < 0.005 < 0.005 — — — — — — — Onsite
truck
< 0.005 0.03 0.02 < 0.005 < 0.005 0.37 0.37 < 0.005 0.04 0.04 — 9.76 9.76 < 0.005 < 0.005 < 0.005 10.3 Average
Daily
— — — — — — — — — — — — — — — — —
Off-Road
Equipment
0.18 1.63 2.34 < 0.005 0.05 — 0.05 0.04 — 0.04 — 361 361 0.01 < 0.005 — 362 Dust
From
Material
Movement
— — — — — < 0.005 < 0.005 — < 0.005 < 0.005 — — — — — — — Onsite
truck
< 0.005 0.01 < 0.005 < 0.005 < 0.005 0.06 0.06 < 0.005 0.01 0.01 — 1.69 1.69 < 0.005 < 0.005 < 0.005 1.79 Annual — — — — — — — — — — — — — — — — —
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Off-Road 0.03 0.30 0.43 < 0.005 0.01 — 0.01 0.01 — 0.01 — 59.7 59.7 < 0.005 < 0.005 — 59.9 Equipment
Dust
From
Material
Movement
— — — — — < 0.005 < 0.005 — < 0.005 < 0.005 — — — — — — — Onsite
truck
< 0.005 < 0.005 < 0.005 < 0.005 < 0.005 0.01 0.01 < 0.005 < 0.005 < 0.005 — 0.28 0.28 < 0.005 < 0.005 < 0.005 0.30 Offsite — — — — — — — — — — — — — — — — —
Daily,
Summer
(Max)
— — — — — — — — — — — — — — — — —
Daily,
Winter
(Max)
— — — — — — — — — — — — — — — — —
Worker 0.11 0.12 1.70 0.00 0.00 0.52 0.52 0.00 0.12 0.12 — 487 487 0.01 0.02 0.04 493 Vendor < 0.005 0.26 0.12 < 0.005 < 0.005 0.07 0.07 < 0.005 0.02 0.02 — 246 246 0.01 0.03 0.02 257 Hauling 0.02 1.32 0.57 0.01 0.01 0.29 0.30 0.01 0.08 0.10 — 1,076 1,076 0.08 0.17 0.05 1,129 Average
Daily
— — — — — — — — — — — — — — — — —
Worker 0.02 0.02 0.31 0.00 0.00 0.09 0.09 0.00 0.02 0.02 — 86.0 86.0 < 0.005 < 0.005 0.12 87.2 Vendor < 0.005 0.04 0.02 < 0.005 < 0.005 0.01 0.01 < 0.005 < 0.005 < 0.005 — 42.9 42.9 < 0.005 0.01 0.04 44.7 Hauling < 0.005 0.23 0.10 < 0.005 < 0.005 0.05 0.05 < 0.005 0.01 0.02 — 187 187 0.01 0.03 0.15 197 Annual — — — — — — — — — — — — — — — — —
Worker < 0.005 < 0.005 0.06 0.00 0.00 0.02 0.02 0.00 < 0.005 < 0.005 — 14.2 14.2 < 0.005 < 0.005 0.02 14.4 Vendor < 0.005 0.01 < 0.005 < 0.005 < 0.005 < 0.005 < 0.005 < 0.005 < 0.005 < 0.005 — 7.10 7.10 < 0.005 < 0.005 0.01 7.41 Hauling < 0.005 0.04 0.02 < 0.005 < 0.005 0.01 0.01 < 0.005 < 0.005 < 0.005 — 31.0 31.0 < 0.005 0.01 0.03 32.6
3.6. Linear, Drainage, Utilities, & Sub-Grade (2027) - Mitigated Criteria Pollutants (lb/day for daily, ton/yr for annual) and GHGs (lb/day for daily, MT/yr for annual) Location ROG NOx CO SO2 PM10E PM10D PM10T PM2.5E PM2.5D PM2.5T BCO2 NBCO2 CO2T CH4 N2O R CO2e Onsite — — — — — — — Page 345 of 2424 — — — — — — — — — — Savi Ranch Parkway Widening/Connect Savi Ranch Detailed Report, 5/18/2025 19 / 46
Daily,
Summer
(Max)
— — — — — — — — — — — — — — — — —
Daily,
Winter
(Max)
— — — — — — — — — — — — — — — — —
Off-Road
Equipment
1.01 9.36 13.4 0.02 0.28 — 0.28 0.25 — 0.25 — 2,070 2,070 0.08 0.02 — 2,077 Dust
From
Material
Movement
— — — — — < 0.005 < 0.005 — < 0.005 < 0.005 — — — — — — — Onsite
truck
< 0.005 0.03 0.02 < 0.005 < 0.005 0.37 0.37 < 0.005 0.04 0.04 — 9.76 9.76 < 0.005 < 0.005 < 0.005 10.3 Average
Daily
— — — — — — — — — — — — — — — — —
Off-Road
Equipment
0.18 1.63 2.34 < 0.005 0.05 — 0.05 0.04 — 0.04 — 361 361 0.01 < 0.005 — 362 Dust
From
Material
Movement
— — — — — < 0.005 < 0.005 — < 0.005 < 0.005 — — — — — — — Onsite
truck
< 0.005 0.01 < 0.005 < 0.005 < 0.005 0.06 0.06 < 0.005 0.01 0.01 — 1.69 1.69 < 0.005 < 0.005 < 0.005 1.79 Annual — — — — — — — — — — — — — — — — —
Off-Road
Equipment
0.03 0.30 0.43 < 0.005 0.01 — 0.01 0.01 — 0.01 — 59.7 59.7 < 0.005 < 0.005 — 59.9 Dust
From
Material
Movement
— — — — — < 0.005 < 0.005 — < 0.005 < 0.005 — — — — — — — Onsite
truck
< 0.005 < 0.005 < 0.005 < 0.005 < 0.005 0.01 0.01 < 0.005 < 0.005 < 0.005 — 0.28 0.28 < 0.005 < 0.005 < 0.005 0.30 Offsite — — — — — — — — — — — — — — — — —
Daily,
Summer
(Max)
— — — — — — — — — — — — — — — — —
Savi Ranch Parkway Widening/Connect Savi Ranch Detailed Report, 5/18/2025 20 / 46
Daily,
Winter
(Max)
— — — — — — — — — — — — — — — — —
Worker 0.11 0.12 1.70 0.00 0.00 0.52 0.52 0.00 0.12 0.12 — 487 487 0.01 0.02 0.04 493 Vendor < 0.005 0.26 0.12 < 0.005 < 0.005 0.07 0.07 < 0.005 0.02 0.02 — 246 246 0.01 0.03 0.02 257 Hauling 0.02 1.32 0.57 0.01 0.01 0.29 0.30 0.01 0.08 0.10 — 1,076 1,076 0.08 0.17 0.05 1,129 Average
Daily
— — — — — — — — — — — — — — — — —
Worker 0.02 0.02 0.31 0.00 0.00 0.09 0.09 0.00 0.02 0.02 — 86.0 86.0 < 0.005 < 0.005 0.12 87.2 Vendor < 0.005 0.04 0.02 < 0.005 < 0.005 0.01 0.01 < 0.005 < 0.005 < 0.005 — 42.9 42.9 < 0.005 0.01 0.04 44.7 Hauling < 0.005 0.23 0.10 < 0.005 < 0.005 0.05 0.05 < 0.005 0.01 0.02 — 187 187 0.01 0.03 0.15 197 Annual — — — — — — — — — — — — — — — — —
Worker < 0.005 < 0.005 0.06 0.00 0.00 0.02 0.02 0.00 < 0.005 < 0.005 — 14.2 14.2 < 0.005 < 0.005 0.02 14.4 Vendor < 0.005 0.01 < 0.005 < 0.005 < 0.005 < 0.005 < 0.005 < 0.005 < 0.005 < 0.005 — 7.10 7.10 < 0.005 < 0.005 0.01 7.41 Hauling < 0.005 0.04 0.02 < 0.005 < 0.005 0.01 0.01 < 0.005 < 0.005 < 0.005 — 31.0 31.0 < 0.005 0.01 0.03 32.6
3.7. Linear, Drainage, Utilities, & Sub-Grade (2028) - Unmitigated Criteria Pollutants (lb/day for daily, ton/yr for annual) and GHGs (lb/day for daily, MT/yr for annual) Location ROG NOx CO SO2 PM10E PM10D PM10T PM2.5E PM2.5D PM2.5T BCO2 NBCO2 CO2T CH4 N2O R CO2e Onsite — — — — — — — — — — — — — — — — —
Daily,
Summer
(Max)
— — — — — — — — — — — — — — — — —
Daily,
Winter
(Max)
— — — — — — — — — — — — — — — — —
Off-Road
Equipment
0.99 9.17 13.4 0.02 0.25 — 0.25 0.23 — 0.23 — 2,070 2,070 0.08 0.02 — 2,077 Dust
From
Material
Movement
— — — — — < 0.005 < 0.005 — < 0.005 < 0.005 — — — — — — —
Savi Ranch Parkway Widening/Connect Savi Ranch Detailed Report, 5/18/2025 21 / 46
Onsite
truck
< 0.005 0.03 0.02 < 0.005 < 0.005 0.37 0.37 < 0.005 0.04 0.04 — 9.57 9.57 < 0.005 < 0.005 < 0.005 10.1 Average
Daily
— — — — — — — — — — — — — — — — —
Off-Road
Equipment
0.07 0.63 0.92 < 0.005 0.02 — 0.02 0.02 — 0.02 — 142 142 0.01 < 0.005 — 142 Dust
From
Material
Movement
— — — — — < 0.005 < 0.005 — < 0.005 < 0.005 — — — — — — — Onsite
truck
< 0.005 < 0.005 < 0.005 < 0.005 < 0.005 0.02 0.02 < 0.005 < 0.005 < 0.005 — 0.65 0.65 < 0.005 < 0.005 < 0.005 0.69 Annual — — — — — — — — — — — — — — — — —
Off-Road
Equipment
0.01 0.11 0.17 < 0.005 < 0.005 — < 0.005 < 0.005 — < 0.005 — 23.5 23.5 < 0.005 < 0.005 — 23.6 Dust
From
Material
Movement
— — — — — < 0.005 < 0.005 — < 0.005 < 0.005 — — — — — — — Onsite
truck
< 0.005 < 0.005 < 0.005 < 0.005 < 0.005 < 0.005 < 0.005 < 0.005 < 0.005 < 0.005 — 0.11 0.11 < 0.005 < 0.005 < 0.005 0.11 Offsite — — — — — — — — — — — — — — — — —
Daily,
Summer
(Max)
— — — — — — — — — — — — — — — — —
Daily,
Winter
(Max)
— — — — — — — — — — — — — — — — —
Worker 0.11 0.12 1.60 0.00 0.00 0.52 0.52 0.00 0.12 0.12 — 479 479 0.01 0.02 0.04 485 Vendor < 0.005 0.25 0.12 < 0.005 < 0.005 0.07 0.07 < 0.005 0.02 0.02 — 241 241 0.01 0.03 0.01 251 Hauling 0.02 1.27 0.56 0.01 0.01 0.29 0.30 0.01 0.08 0.10 — 1,051 1,051 0.08 0.17 0.05 1,102 Average
Daily
— — — — — — — — — — — — — — — — —
Worker 0.01 0.01 0.11 0.00 0.00 0.04 0.04 0.00 0.01 0.01 — 33.2 33.2 < 0.005 < 0.005 0.04 33.7 Vendor < 0.005 0.02 0.01 < 0.005 < 0.005 < 0.005 < 0.005 Page 348 of 2424 < 0.005 < 0.005 < 0.005 — 16.5 16.5 < 0.005 < 0.005 0.02 17.2 Savi Ranch Parkway Widening/Connect Savi Ranch Detailed Report, 5/18/2025 22 / 46
Hauling < 0.005 0.09 0.04 < 0.005 < 0.005 0.02 0.02 < 0.005 0.01 0.01 — 72.0 72.0 0.01 0.01 0.06 75.5 Annual — — — — — — — — — — — — — — — — —
Worker < 0.005 < 0.005 0.02 0.00 0.00 0.01 0.01 0.00 < 0.005 < 0.005 — 5.50 5.50 < 0.005 < 0.005 0.01 5.58 Vendor < 0.005 < 0.005 < 0.005 < 0.005 < 0.005 < 0.005 < 0.005 < 0.005 < 0.005 < 0.005 — 2.73 2.73 < 0.005 < 0.005 < 0.005 2.85 Hauling < 0.005 0.02 0.01 < 0.005 < 0.005 < 0.005 < 0.005 < 0.005 < 0.005 < 0.005 — 11.9 11.9 < 0.005 < 0.005 0.01 12.5
3.8. Linear, Drainage, Utilities, & Sub-Grade (2028) - Mitigated Criteria Pollutants (lb/day for daily, ton/yr for annual) and GHGs (lb/day for daily, MT/yr for annual) Location ROG NOx CO SO2 PM10E PM10D PM10T PM2.5E PM2.5D PM2.5T BCO2 NBCO2 CO2T CH4 N2O R CO2e Onsite — — — — — — — — — — — — — — — — —
Daily,
Summer
(Max)
— — — — — — — — — — — — — — — — —
Daily,
Winter
(Max)
— — — — — — — — — — — — — — — — —
Off-Road
Equipment
0.99 9.17 13.4 0.02 0.25 — 0.25 0.23 — 0.23 — 2,070 2,070 0.08 0.02 — 2,077 Dust
From
Material
Movement
— — — — — < 0.005 < 0.005 — < 0.005 < 0.005 — — — — — — — Onsite
truck
< 0.005 0.03 0.02 < 0.005 < 0.005 0.37 0.37 < 0.005 0.04 0.04 — 9.57 9.57 < 0.005 < 0.005 < 0.005 10.1 Average
Daily
— — — — — — — — — — — — — — — — —
Off-Road
Equipment
0.07 0.63 0.92 < 0.005 0.02 — 0.02 0.02 — 0.02 — 142 142 0.01 < 0.005 — 142 Dust
From
Material
Movement
— — — — — < 0.005 < 0.005 — < 0.005 < 0.005 — — — — — — — Onsite
truck
< 0.005 < 0.005 < 0.005 < 0.005 < 0.005 0.02 0.02 < 0.005 < 0.005 < 0.005 — 0.65 0.65 < 0.005 < 0.005 < 0.005 0.69
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Annual — — — — — — — — — — — — — — — — —
Off-Road
Equipment
0.01 0.11 0.17 < 0.005 < 0.005 — < 0.005 < 0.005 — < 0.005 — 23.5 23.5 < 0.005 < 0.005 — 23.6 Dust
From
Material
Movement
— — — — — < 0.005 < 0.005 — < 0.005 < 0.005 — — — — — — — Onsite
truck
< 0.005 < 0.005 < 0.005 < 0.005 < 0.005 < 0.005 < 0.005 < 0.005 < 0.005 < 0.005 — 0.11 0.11 < 0.005 < 0.005 < 0.005 0.11 Offsite — — — — — — — — — — — — — — — — —
Daily,
Summer
(Max)
— — — — — — — — — — — — — — — — —
Daily,
Winter
(Max)
— — — — — — — — — — — — — — — — —
Worker 0.11 0.12 1.60 0.00 0.00 0.52 0.52 0.00 0.12 0.12 — 479 479 0.01 0.02 0.04 485 Vendor < 0.005 0.25 0.12 < 0.005 < 0.005 0.07 0.07 < 0.005 0.02 0.02 — 241 241 0.01 0.03 0.01 251 Hauling 0.02 1.27 0.56 0.01 0.01 0.29 0.30 0.01 0.08 0.10 — 1,051 1,051 0.08 0.17 0.05 1,102 Average
Daily
— — — — — — — — — — — — — — — — —
Worker 0.01 0.01 0.11 0.00 0.00 0.04 0.04 0.00 0.01 0.01 — 33.2 33.2 < 0.005 < 0.005 0.04 33.7 Vendor < 0.005 0.02 0.01 < 0.005 < 0.005 < 0.005 < 0.005 < 0.005 < 0.005 < 0.005 — 16.5 16.5 < 0.005 < 0.005 0.02 17.2 Hauling < 0.005 0.09 0.04 < 0.005 < 0.005 0.02 0.02 < 0.005 0.01 0.01 — 72.0 72.0 0.01 0.01 0.06 75.5 Annual — — — — — — — — — — — — — — — — —
Worker < 0.005 < 0.005 0.02 0.00 0.00 0.01 0.01 0.00 < 0.005 < 0.005 — 5.50 5.50 < 0.005 < 0.005 0.01 5.58 Vendor < 0.005 < 0.005 < 0.005 < 0.005 < 0.005 < 0.005 < 0.005 < 0.005 < 0.005 < 0.005 — 2.73 2.73 < 0.005 < 0.005 < 0.005 2.85 Hauling < 0.005 0.02 0.01 < 0.005 < 0.005 < 0.005 < 0.005 < 0.005 < 0.005 < 0.005 — 11.9 11.9 < 0.005 < 0.005 0.01 12.5
3.9. Linear, Paving (2028) - Unmitigated
Criteria Pollutants (lb/day for daily, ton/yr for annual) and GHGs (lb/day for daily, MT/yr for annual) Location ROG NOx CO SO2 PM10E PM10D PM10T Page 350 of 2424 PM2.5E PM2.5D PM2.5T BCO2 NBCO2 CO2T CH4 N2O R CO2e Savi Ranch Parkway Widening/Connect Savi Ranch Detailed Report, 5/18/2025 24 / 46
Onsite — — — — — — — — — — — — — — — — —
Daily,
Summer
(Max)
— — — — — — — — — — — — — — — — —
Off-Road
Equipment
0.73 6.61 10.5 0.01 0.23 — 0.23 0.21 — 0.21 — 1,563 1,563 0.06 0.01 — 1,569 Architect
ural
Coatings
0.01 — — — — — — — — — — — — — — — —
Onsite
truck
< 0.005 0.03 0.02 < 0.005 < 0.005 0.37 0.37 < 0.005 0.04 0.04 — 9.52 9.52 < 0.005 < 0.005 0.01 10.0 Daily,
Winter
(Max)
— — — — — — — — — — — — — — — — —
Off-Road
Equipment
0.73 6.61 10.5 0.01 0.23 — 0.23 0.21 — 0.21 — 1,563 1,563 0.06 0.01 — 1,569 Architect
ural
Coatings
0.01 — — — — — — — — — — — — — — — —
Onsite
truck
< 0.005 0.03 0.02 < 0.005 < 0.005 0.37 0.37 < 0.005 0.04 0.04 — 9.57 9.57 < 0.005 < 0.005 < 0.005 10.1 Average
Daily
— — — — — — — — — — — — — — — — —
Off-Road
Equipment
0.09 0.81 1.29 < 0.005 0.03 — 0.03 0.03 — 0.03 — 193 193 0.01 < 0.005 — 193 Architect
ural
Coatings
< 0.005 — — — — — — — — — — — — — — — —
Onsite
truck
< 0.005 < 0.005 < 0.005 < 0.005 < 0.005 0.04 0.04 < 0.005 < 0.005 < 0.005 — 1.18 1.18 < 0.005 < 0.005 < 0.005 1.24 Annual — — — — — — — — — — — — — — — — —
Off-Road
Equipment
0.02 0.15 0.24 < 0.005 0.01 — 0.01 < 0.005 — < 0.005 — 31.9 31.9 < 0.005 < 0.005 — 32.0 Architect
ural
Coatings
< 0.005 — — — — — — — — — — — — — — — —
Savi Ranch Parkway Widening/Connect Savi Ranch Detailed Report, 5/18/2025 25 / 46
Onsite
truck
< 0.005 < 0.005 < 0.005 < 0.005 < 0.005 0.01 0.01 < 0.005 < 0.005 < 0.005 — 0.19 0.19 < 0.005 < 0.005 < 0.005 0.21 Offsite — — — — — — — — — — — — — — — — —
Daily,
Summer
(Max)
— — — — — — — — — — — — — — — — —
Worker 0.09 0.08 1.49 0.00 0.00 0.42 0.42 0.00 0.10 0.10 — 402 402 < 0.005 < 0.005 1.16 404 Vendor 0.03 1.47 0.74 0.01 0.01 0.43 0.44 0.01 0.12 0.13 — 1,504 1,504 0.08 0.21 3.31 1,571 Hauling 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 — 0.00 0.00 0.00 0.00 0.00 0.00 Daily,
Winter
(Max)
— — — — — — — — — — — — — — — — —
Worker 0.09 0.10 1.28 0.00 0.00 0.42 0.42 0.00 0.10 0.10 — 383 383 < 0.005 0.02 0.03 388 Vendor 0.03 1.54 0.75 0.01 0.01 0.43 0.44 0.01 0.12 0.13 — 1,504 1,504 0.08 0.21 0.09 1,569 Hauling 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 — 0.00 0.00 0.00 0.00 0.00 0.00 Average
Daily
— — — — — — — — — — — — — — — — —
Worker 0.01 0.01 0.17 0.00 0.00 0.05 0.05 0.00 0.01 0.01 — 47.9 47.9 < 0.005 < 0.005 0.06 48.5 Vendor < 0.005 0.19 0.09 < 0.005 < 0.005 0.05 0.05 < 0.005 0.01 0.02 — 185 185 0.01 0.03 0.18 194 Hauling 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 — 0.00 0.00 0.00 0.00 0.00 0.00 Annual — — — — — — — — — — — — — — — — —
Worker < 0.005 < 0.005 0.03 0.00 0.00 0.01 0.01 0.00 < 0.005 < 0.005 — 7.92 7.92 < 0.005 < 0.005 0.01 8.03 Vendor < 0.005 0.03 0.02 < 0.005 < 0.005 0.01 0.01 < 0.005 < 0.005 < 0.005 — 30.7 30.7 < 0.005 < 0.005 0.03 32.0 Hauling 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 — 0.00 0.00 0.00 0.00 0.00 0.00
3.10. Linear, Paving (2028) - Mitigated
Criteria Pollutants (lb/day for daily, ton/yr for annual) and GHGs (lb/day for daily, MT/yr for annual) Location ROG NOx CO SO2 PM10E PM10D PM10T PM2.5E PM2.5D PM2.5T BCO2 NBCO2 CO2T CH4 N2O R CO2e Onsite — — — — — — — — — — — — — — — — —
Savi Ranch Parkway Widening/Connect Savi Ranch Detailed Report, 5/18/2025 26 / 46
Daily, — — — — — — — — — — — — — — — — —
Summer
(Max)
Off-Road
Equipment
0.73 6.61 10.5 0.01 0.23 — 0.23 0.21 — 0.21 — 1,563 1,563 0.06 0.01 — 1,569 Architect
ural
Coatings
0.01 — — — — — — — — — — — — — — — —
Onsite
truck
< 0.005 0.03 0.02 < 0.005 < 0.005 0.37 0.37 < 0.005 0.04 0.04 — 9.52 9.52 < 0.005 < 0.005 0.01 10.0 Daily,
Winter
(Max)
— — — — — — — — — — — — — — — — —
Off-Road
Equipment
0.73 6.61 10.5 0.01 0.23 — 0.23 0.21 — 0.21 — 1,563 1,563 0.06 0.01 — 1,569 Architect
ural
Coatings
0.01 — — — — — — — — — — — — — — — —
Onsite
truck
< 0.005 0.03 0.02 < 0.005 < 0.005 0.37 0.37 < 0.005 0.04 0.04 — 9.57 9.57 < 0.005 < 0.005 < 0.005 10.1 Average
Daily
— — — — — — — — — — — — — — — — —
Off-Road
Equipment
0.09 0.81 1.29 < 0.005 0.03 — 0.03 0.03 — 0.03 — 193 193 0.01 < 0.005 — 193 Architect
ural
Coatings
< 0.005 — — — — — — — — — — — — — — — —
Onsite
truck
< 0.005 < 0.005 < 0.005 < 0.005 < 0.005 0.04 0.04 < 0.005 < 0.005 < 0.005 — 1.18 1.18 < 0.005 < 0.005 < 0.005 1.24 Annual — — — — — — — — — — — — — — — — —
Off-Road
Equipment
0.02 0.15 0.24 < 0.005 0.01 — 0.01 < 0.005 — < 0.005 — 31.9 31.9 < 0.005 < 0.005 — 32.0 Architect
ural
Coatings
< 0.005 — — — — — — — — — — — — — — — —
Savi Ranch Parkway Widening/Connect Savi Ranch Detailed Report, 5/18/2025 27 / 46
Onsite < 0.005 < 0.005 < 0.005 < 0.005 < 0.005 0.01 0.01 < 0.005 < 0.005 < 0.005 — 0.19 0.19 < 0.005 < 0.005 < 0.005 0.21 truck
Offsite — — — — — — — — — — — — — — — — —
Daily,
Summer
(Max)
— — — — — — — — — — — — — — — — —
Worker 0.09 0.08 1.49 0.00 0.00 0.42 0.42 0.00 0.10 0.10 — 402 402 < 0.005 < 0.005 1.16 404 Vendor 0.03 1.47 0.74 0.01 0.01 0.43 0.44 0.01 0.12 0.13 — 1,504 1,504 0.08 0.21 3.31 1,571 Hauling 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 — 0.00 0.00 0.00 0.00 0.00 0.00 Daily,
Winter
(Max)
— — — — — — — — — — — — — — — — —
Worker 0.09 0.10 1.28 0.00 0.00 0.42 0.42 0.00 0.10 0.10 — 383 383 < 0.005 0.02 0.03 388 Vendor 0.03 1.54 0.75 0.01 0.01 0.43 0.44 0.01 0.12 0.13 — 1,504 1,504 0.08 0.21 0.09 1,569 Hauling 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 — 0.00 0.00 0.00 0.00 0.00 0.00 Average
Daily
— — — — — — — — — — — — — — — — —
Worker 0.01 0.01 0.17 0.00 0.00 0.05 0.05 0.00 0.01 0.01 — 47.9 47.9 < 0.005 < 0.005 0.06 48.5 Vendor < 0.005 0.19 0.09 < 0.005 < 0.005 0.05 0.05 < 0.005 0.01 0.02 — 185 185 0.01 0.03 0.18 194 Hauling 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 — 0.00 0.00 0.00 0.00 0.00 0.00 Annual — — — — — — — — — — — — — — — — —
Worker < 0.005 < 0.005 0.03 0.00 0.00 0.01 0.01 0.00 < 0.005 < 0.005 — 7.92 7.92 < 0.005 < 0.005 0.01 8.03 Vendor < 0.005 0.03 0.02 < 0.005 < 0.005 0.01 0.01 < 0.005 < 0.005 < 0.005 — 30.7 30.7 < 0.005 < 0.005 0.03 32.0 Hauling 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 — 0.00 0.00 0.00 0.00 0.00 0.00
4. Operations Emissions Details
4.10. Soil Carbon Accumulation By Vegetation Type
4.10.1. Soil Carbon Accumulation By Vegetation Type - Unmitigated Criteria Pollutants (lb/day for daily, ton/yr for annual) and GHGs (lb/day for daily, MT/yr for annual) Page 354 of 2424 Savi Ranch Parkway Widening/Connect Savi Ranch Detailed Report, 5/18/2025 28 / 46
Vegetatio ROG NOx CO SO2 PM10E PM10D PM10T PM2.5E PM2.5D PM2.5T BCO2 NBCO2 CO2T CH4 N2O R CO2e Daily,
Summer
(Max)
— — — — — — — — — — — — — — — — —
Total — — — — — — — — — — — — — — — — —
Daily,
Winter
(Max)
— — — — — — — — — — — — — — — — —
Total — — — — — — — — — — — — — — — — —
Annual — — — — — — — — — — — — — — — — —
Total — — — — — — — — — — — — — — — — —
4.10.2. Above and Belowground Carbon Accumulation by Land Use Type - Unmitigated Criteria Pollutants (lb/day for daily, ton/yr for annual) and GHGs (lb/day for daily, MT/yr for annual) Land
Use
ROG NOx CO SO2 PM10E PM10D PM10T PM2.5E PM2.5D PM2.5T BCO2 NBCO2 CO2T CH4 N2O R CO2e Daily,
Summer
(Max)
— — — — — — — — — — — — — — — — —
Total — — — — — — — — — — — — — — — — —
Daily,
Winter
(Max)
— — — — — — — — — — — — — — — — —
Total — — — — — — — — — — — — — — — — —
Annual — — — — — — — — — — — — — — — — —
Total — — — — — — — — — — — — — — — — —
4.10.3. Avoided and Sequestered Emissions by Species - Unmitigated Criteria Pollutants (lb/day for daily, ton/yr for annual) and GHGs (lb/day for daily, MT/yr for annual) Species ROG NOx CO SO2 PM10E PM10D PM10T PM2.5E PM2.5D PM2.5T BCO2 NBCO2 CO2T CH4 N2O R CO2e
Savi Ranch Parkway Widening/Connect Savi Ranch Detailed Report, 5/18/2025 29 / 46
Daily,—————————————————
Summer
(Max)
Avoided—————————————————
Subtotal—————————————————
Sequest
ered
—————————————————
Subtotal—————————————————
Remove d—————————————————
Subtotal—————————————————
——————————————————
Daily,
Winter
(Max)
—————————————————
Avoided—————————————————
Subtotal—————————————————
Sequest
ered
—————————————————
Subtotal—————————————————
Remove d—————————————————
Subtotal—————————————————
——————————————————
Annual—————————————————
Avoided—————————————————
Subtotal—————————————————
Sequest
ered
—————————————————
Subtotal—————————————————
Remove d—————————————————
Savi Ranch Parkway Widening/Connect Savi Ranch Detailed Report, 5/18/2025 30 / 46
Subtotal — — — — — — — — — — — — — — — — —
— — — — — — — — — — — — — — — — — —
4.10.4. Soil Carbon Accumulation By Vegetation Type - Mitigated Criteria Pollutants (lb/day for daily, ton/yr for annual) and GHGs (lb/day for daily, MT/yr for annual) Vegetatio
n
ROG NOx CO SO2 PM10E PM10D PM10T PM2.5E PM2.5D PM2.5T BCO2 NBCO2 CO2T CH4 N2O R CO2e Daily,
Summer
(Max)
— — — — — — — — — — — — — — — — —
Total — — — — — — — — — — — — — — — — —
Daily,
Winter
(Max)
— — — — — — — — — — — — — — — — —
Total — — — — — — — — — — — — — — — — —
Annual — — — — — — — — — — — — — — — — —
Total — — — — — — — — — — — — — — — — —
4.10.5. Above and Belowground Carbon Accumulation by Land Use Type - Mitigated Criteria Pollutants (lb/day for daily, ton/yr for annual) and GHGs (lb/day for daily, MT/yr for annual) Land
Use
ROG NOx CO SO2 PM10E PM10D PM10T PM2.5E PM2.5D PM2.5T BCO2 NBCO2 CO2T CH4 N2O R CO2e Daily,
Summer
(Max)
— — — — — — — — — — — — — — — — —
Total — — — — — — — — — — — — — — — — —
Daily,
Winter
(Max)
— — — — — — — — — — — — — — — — —
Total — — — — — — — — — — — — — — — — —
Annual — — — — — — — — — — — — — — — — —
Total — — — — — — — Page 357 of 2424 — — — — — — — — — — Savi Ranch Parkway Widening/Connect Savi Ranch Detailed Report, 5/18/2025 31 / 46
4.10.6. Avoided and Sequestered Emissions by Species - Mitigated Criteria Pollutants (lb/day for daily, ton/yr for annual) and GHGs (lb/day for daily, MT/yr for annual) Species ROG NOx CO SO2 PM10E PM10D PM10T PM2.5E PM2.5D PM2.5T BCO2 NBCO2 CO2T CH4 N2O R CO2e Daily,
Summer
(Max)
— — — — — — — — — — — — — — — — —
Avoided — — — — — — — — — — — — — — — — —
Subtotal — — — — — — — — — — — — — — — — —
Sequest
ered
— — — — — — — — — — — — — — — — —
Subtotal — — — — — — — — — — — — — — — — —
Remove
d
— — — — — — — — — — — — — — — — —
Subtotal — — — — — — — — — — — — — — — — —
— — — — — — — — — — — — — — — — — —
Daily,
Winter
(Max)
— — — — — — — — — — — — — — — — —
Avoided — — — — — — — — — — — — — — — — —
Subtotal — — — — — — — — — — — — — — — — —
Sequest
ered
— — — — — — — — — — — — — — — — —
Subtotal — — — — — — — — — — — — — — — — —
Remove
d
— — — — — — — — — — — — — — — — —
Subtotal — — — — — — — — — — — — — — — — —
— — — — — — — — — — — — — — — — — —
Annual — — — — — — — — — — — — — — — — —
Avoided — — — — — — — — — — — — — — — — —
Subtotal — — — — — — — — — — — — — — — — —
Savi Ranch Parkway Widening/Connect Savi Ranch Detailed Report, 5/18/2025 32 / 46
Sequest — — — — — — — — — — — — — — — — —
ered
Subtotal — — — — — — — — — — — — — — — — —
Remove
d
— — — — — — — — — — — — — — — — —
Subtotal — — — — — — — — — — — — — — — — —
— — — — — — — — — — — — — — — — — —
5. Activity Data
5.1. Construction Schedule
Phase Name Phase Type Start Date End Date Days Per Week Work Days per Phase Phase Description Linear, Grubbing & Land
Clearing
Linear, Grubbing & Land
Clearing
3/1/2027 4/9/2027 5.00 30.0 —
Linear, Grading &
Excavation
Linear, Grading &
Excavation
4/12/2027 10/1/2027 5.00 125 —
Linear, Drainage, Utilities,
& Sub-Grade
Linear, Drainage, Utilities,
& Sub-Grade
10/4/2027 2/4/2028 5.00 90.0 —
Linear, Paving Linear, Paving 2/7/2028 4/7/2028 5.00 45.0 —
5.2. Off-Road Equipment
5.2.1. Unmitigated
Phase Name Equipment Type Fuel Type Engine Tier Number per Day Hours Per Day Horsepower Load Factor Linear, Grubbing &
Land Clearing
Crawler Tractors Diesel Average 1.00 8.00 87.0 0.43
Linear, Grubbing &
Land Clearing
Excavators Diesel Average 2.00 8.00 36.0 0.38
Linear, Grubbing &
Land Clearing
Signal Boards Electric Average 4.00 8.00 6.00 0.82
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Linear, Grubbing & Skid Steer Loaders Diesel Average 2.00 8.00 71.0 0.37 Land Clearing
Linear, Grubbing &
Land Clearing
Tractors/Loaders/Back
hoes
Diesel Average 2.00 7.00 84.0 0.37
Linear, Grading &
Excavation
Crawler Tractors Diesel Average 1.00 8.00 87.0 0.43
Linear, Grading &
Excavation
Excavators Diesel Average 2.00 8.00 36.0 0.38
Linear, Grading &
Excavation
Rollers Diesel Average 1.00 6.00 36.0 0.38
Linear, Grading &
Excavation
Signal Boards Electric Average 4.00 8.00 6.00 0.82
Linear, Grading &
Excavation
Tractors/Loaders/Back
hoes
Diesel Average 2.00 8.00 84.0 0.37
Linear, Grading &
Excavation
Bore/Drill Rigs Diesel Average 1.00 6.00 83.0 0.50
Linear, Grading &
Excavation
Skid Steer Loaders Diesel Average 2.00 8.00 71.0 0.37
Linear, Drainage,
Utilities, & Sub-Grade
Air Compressors Diesel Average 2.00 8.00 37.0 0.48
Linear, Drainage,
Utilities, & Sub-Grade
Generator Sets Diesel Average 2.00 8.00 14.0 0.74
Linear, Drainage,
Utilities, & Sub-Grade
Plate Compactors Diesel Average 2.00 8.00 8.00 0.43
Linear, Drainage,
Utilities, & Sub-Grade
Pumps Diesel Average 1.00 8.00 11.0 0.74
Linear, Drainage,
Utilities, & Sub-Grade
Rough Terrain Forklifts Diesel Average 1.00 8.00 96.0 0.40 Linear, Drainage,
Utilities, & Sub-Grade
Tractors/Loaders/Back
hoes
Diesel Average 2.00 7.00 84.0 0.37
Linear, Drainage,
Utilities, & Sub-Grade
Signal Boards Electric Average 4.00 8.00 6.00 0.82
Linear, Drainage,
Utilities, & Sub-Grade
Skid Steer Loaders Diesel Average 2.00 8.00 71.0 0.37
Linear, Paving Pavers Diesel Average Page 360 of 2424 1.00 8.00 81.0 0.42 Savi Ranch Parkway Widening/Connect Savi Ranch Detailed Report, 5/18/2025 34 / 46
Linear, Paving Paving Equipment Diesel Average 1.00 8.00 89.0 0.36 Linear, Paving Rollers Diesel Average 2.00 8.00 36.0 0.38 Linear, Paving Signal Boards Electric Average 4.00 8.00 6.00 0.82 Linear, Paving Tractors/Loaders/Back
hoes
Diesel Average 2.00 8.00 84.0 0.37
Linear, Paving Sweepers/Scrubbers Diesel Average 1.00 4.00 36.0 0.46
5.2.2. Mitigated
Phase Name Equipment Type Fuel Type Engine Tier Number per Day Hours Per Day Horsepower Load Factor Linear, Grubbing &
Land Clearing
Crawler Tractors Diesel Average 1.00 8.00 87.0 0.43
Linear, Grubbing &
Land Clearing
Excavators Diesel Average 2.00 8.00 36.0 0.38
Linear, Grubbing &
Land Clearing
Signal Boards Electric Average 4.00 8.00 6.00 0.82
Linear, Grubbing &
Land Clearing
Skid Steer Loaders Diesel Average 2.00 8.00 71.0 0.37
Linear, Grubbing &
Land Clearing
Tractors/Loaders/Back
hoes
Diesel Average 2.00 7.00 84.0 0.37
Linear, Grading &
Excavation
Crawler Tractors Diesel Average 1.00 8.00 87.0 0.43
Linear, Grading &
Excavation
Excavators Diesel Average 2.00 8.00 36.0 0.38
Linear, Grading &
Excavation
Rollers Diesel Average 1.00 6.00 36.0 0.38
Linear, Grading &
Excavation
Signal Boards Electric Average 4.00 8.00 6.00 0.82
Linear, Grading &
Excavation
Tractors/Loaders/Back
hoes
Diesel Average 2.00 8.00 84.0 0.37
Linear, Grading &
Excavation
Bore/Drill Rigs Diesel Average 1.00 6.00 83.0 0.50
Linear, Grading &
Excavation
Skid Steer Loaders Diesel Average 2.00 8.00 71.0 0.37
Savi Ranch Parkway Widening/Connect Savi Ranch Detailed Report, 5/18/2025 35 / 46
Linear, Drainage,
Utilities, & Sub-Grade
Air Compressors Diesel Average 2.00 8.00 37.0 0.48
Linear, Drainage,
Utilities, & Sub-Grade
Generator Sets Diesel Average 2.00 8.00 14.0 0.74
Linear, Drainage,
Utilities, & Sub-Grade
Plate Compactors Diesel Average 2.00 8.00 8.00 0.43
Linear, Drainage,
Utilities, & Sub-Grade
Pumps Diesel Average 1.00 8.00 11.0 0.74
Linear, Drainage,
Utilities, & Sub-Grade
Rough Terrain Forklifts Diesel Average 1.00 8.00 96.0 0.40 Linear, Drainage,
Utilities, & Sub-Grade
Tractors/Loaders/Back
hoes
Diesel Average 2.00 7.00 84.0 0.37
Linear, Drainage,
Utilities, & Sub-Grade
Signal Boards Electric Average 4.00 8.00 6.00 0.82
Linear, Drainage,
Utilities, & Sub-Grade
Skid Steer Loaders Diesel Average 2.00 8.00 71.0 0.37
Linear, Paving Pavers Diesel Average 1.00 8.00 81.0 0.42 Linear, Paving Paving Equipment Diesel Average 1.00 8.00 89.0 0.36 Linear, Paving Rollers Diesel Average 2.00 8.00 36.0 0.38 Linear, Paving Signal Boards Electric Average 4.00 8.00 6.00 0.82 Linear, Paving Tractors/Loaders/Back
hoes
Diesel Average 2.00 8.00 84.0 0.37
Linear, Paving Sweepers/Scrubbers Diesel Average 1.00 4.00 36.0 0.46
5.3. Construction Vehicles
5.3.1. Unmitigated
Phase Name Trip Type One-Way Trips per Day Miles per Trip Vehicle Mix Linear, Grubbing & Land Clearing — — — —
Linear, Grubbing & Land Clearing Worker 32.0 18.5 LDA,LDT1,LDT2 Linear, Grubbing & Land Clearing Vendor 0.00 10.2 HHDT,MHDT Linear, Grubbing & Land Clearing Hauling 24.0 Page 362 of 2424 20.0 HHDT Savi Ranch Parkway Widening/Connect Savi Ranch Detailed Report, 5/18/2025 36 / 46
Linear, Grubbing & Land Clearing Onsite truck 2.00 1.00 HHDT Linear, Grading & Excavation — — — —
Linear, Grading & Excavation Worker 40.0 18.5 LDA,LDT1,LDT2 Linear, Grading & Excavation Vendor 4.00 10.2 HHDT,MHDT Linear, Grading & Excavation Hauling 32.0 20.0 HHDT
Linear, Grading & Excavation Onsite truck 2.00 1.00 HHDT Linear, Drainage, Utilities, &
Sub-Grade
— — — —
Linear, Drainage, Utilities, &
Sub-Grade
Worker 40.0 18.5 LDA,LDT1,LDT2
Linear, Drainage, Utilities, &
Sub-Grade
Vendor 8.00 10.2 HHDT,MHDT
Linear, Drainage, Utilities, &
Sub-Grade
Hauling 16.0 20.0 HHDT
Linear, Drainage, Utilities, &
Sub-Grade
Onsite truck 2.00 1.00 HHDT
Linear, Paving — — — —
Linear, Paving Worker 32.0 18.5 LDA,LDT1,LDT2
Linear, Paving Vendor 50.0 10.2 HHDT,MHDT
Linear, Paving Hauling 0.00 20.0 HHDT
Linear, Paving Onsite truck 2.00 1.00 HHDT
5.3.2. Mitigated
Phase Name Trip Type One-Way Trips per Day Miles per Trip Vehicle Mix Linear, Grubbing & Land Clearing — — — —
Linear, Grubbing & Land Clearing Worker 32.0 18.5 LDA,LDT1,LDT2 Linear, Grubbing & Land Clearing Vendor 0.00 10.2 HHDT,MHDT Linear, Grubbing & Land Clearing Hauling 24.0 20.0 HHDT Linear, Grubbing & Land Clearing Onsite truck 2.00 1.00 HHDT Linear, Grading & Excavation — — — — Page 363 of 2424
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Linear, Grading & Excavation Worker 40.0 18.5 LDA,LDT1,LDT2 Linear, Grading & Excavation Vendor 4.00 10.2 HHDT,MHDT Linear, Grading & Excavation Hauling 32.0 20.0 HHDT
Linear, Grading & Excavation Onsite truck 2.00 1.00 HHDT Linear, Drainage, Utilities, &
Sub-Grade
— — — —
Linear, Drainage, Utilities, &
Sub-Grade
Worker 40.0 18.5 LDA,LDT1,LDT2
Linear, Drainage, Utilities, &
Sub-Grade
Vendor 8.00 10.2 HHDT,MHDT
Linear, Drainage, Utilities, &
Sub-Grade
Hauling 16.0 20.0 HHDT
Linear, Drainage, Utilities, &
Sub-Grade
Onsite truck 2.00 1.00 HHDT
Linear, Paving — — — —
Linear, Paving Worker 32.0 18.5 LDA,LDT1,LDT2
Linear, Paving Vendor 50.0 10.2 HHDT,MHDT
Linear, Paving Hauling 0.00 20.0 HHDT
Linear, Paving Onsite truck 2.00 1.00 HHDT
5.4. Vehicles
5.4.1. Construction Vehicle Control Strategies
Control Strategies Applied PM10 Reduction PM2.5 Reduction Water unpaved roads twice daily 55% 55%
Limit vehicle speeds on unpaved roads to 25 mph 44% 44% Sweep paved roads once per month 9% 9%
5.5. Architectural Coatings
Savi Ranch Parkway Widening/Connect Savi Ranch Detailed Report, 5/18/2025 38 / 46
Phase Name Residential Interior Area Parking Area Coated (sq ft) Coated (sq ft)
Residential Exterior Area
Coated (sq ft)
Non-Residential Interior Area
Coated (sq ft)
Non-Residential Exterior Area
Coated (sq ft)
Linear, Paving 0.00 0.00 0.00 0.00 100
5.6. Dust Mitigation
5.6.1. Construction Earthmoving Activities
Phase Name Material Imported (Cubic
Yards)
Material Exported (Cubic
Yards)
Acres Graded (acres) Material Demolished (sq. ft.) Acres Paved (acres) Linear, Grubbing & Land
Clearing
— 1,920 6.65 0.00 —
Linear, Grading & Excavation — 24,000 6.65 0.00 —
Linear, Drainage, Utilities, &
Sub-Grade
— 11,520 6.65 0.00 —
5.6.2. Construction Earthmoving Control Strategies
Control Strategies Applied Frequency (per day) PM10 Reduction PM2.5 Reduction Water Exposed Area 2 61% 61%
Water Demolished Area 2 36% 36%
5.7. Construction Paving
Land Use Area Paved (acres) % Asphalt
Road Widening 6.65 80%
5.8. Construction Electricity Consumption and Emissions Factors kWh per Year and Emission Factor (lb/MWh)
Year kWh per Year CO2 CH4 N2O
2027 352 532 0.03 < 0.005
Savi Ranch Parkway Widening/Connect Savi Ranch Detailed Report, 5/18/2025 39 / 46
2028 235 532 0.03 < 0.005
5.18. Vegetation
5.18.1. Land Use Change
5.18.1.1. Unmitigated
Vegetation Land Use Type Vegetation Soil Type Initial Acres Final Acres
5.18.1.2. Mitigated
Vegetation Land Use Type Vegetation Soil Type Initial Acres Final Acres
5.18.1. Biomass Cover Type
5.18.1.1. Unmitigated
Biomass Cover Type Initial Acres Final Acres
5.18.1.2. Mitigated
Biomass Cover Type Initial Acres Final Acres
5.18.2. Sequestration
5.18.2.1. Unmitigated
Tree Type Number Electricity Saved (kWh/year) Natural Gas Saved (btu/year)
5.18.2.2. Mitigated
Tree Type Number Electricity Saved (kWh/year) Natural Gas Saved (btu/year)
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6. Climate Risk Detailed Report
6.1. Climate Risk Summary
Cal-Adapt midcentury 2040–2059 average projections for four hazards are reported below for your project location. These are under Representation Concentration Pathway (RCP) 8.5 which assumes GHG emissions will continue to rise strongly through 2050 and then plateau around 2100.
Climate Hazard Result for Project Location Unit
Temperature and Extreme Heat 11.7 annual days of extreme heat Extreme Precipitation 4.20 annual days with precipitation above 20 mm Sea Level Rise — meters of inundation depth
Wildfire 26.7 annual hectares burned
Temperature and Extreme Heat data are for grid cell in which your project are located. The projection is based on the 98th historical percentile of daily maximum/minimum temperatures from observed historical data (32 climate model ensemble from Cal-Adapt, 2040–2059 average under RCP 8.5). Each grid cell is 6 kilometers (km) by 6 km, or 3.7 miles (mi) by 3.7 mi.
Extreme Precipitation data are for the grid cell in which your project are located. The threshold of 20 mm is equivalent to about ¾ an inch of rain, which would be light to moderate rainfall if received over a full day or heavy rain if received over a period of 2 to 4 hours. Each grid cell is 6 kilometers (km) by 6 km, or 3.7 miles (mi) by 3.7 mi.
Sea Level Rise data are for the grid cell in which your project are located. The projections are from Radke et al. (2017), as reported in Cal-Adapt (Radke et al., 2017, CEC-500-2017-008), and consider inundation location and depth for the San Francisco Bay, the Sacramento-San Joaquin River Delta and California coast resulting different increments of sea level rise coupled with extreme storm events. Users may select from four scenarios to view the range in potential inundation depth for the grid cell. The four scenarios are: No rise, 0.5 meter, 1.0 meter, 1.41 meters Wildfire data are for the grid cell in which your project are located. The projections are from UC Davis, as reported in Cal-Adapt (2040–2059 average under RCP 8.5), and consider historical data of climate, vegetation, population density, and large (> 400 ha) fire history. Users may select from four model simulations to view the range in potential wildfire probabilities for the grid cell. The four simulations make different assumptions about expected rainfall and temperature are: Warmer/drier (HadGEM2-ES), Cooler/wetter (CNRM-CM5), Average conditions (CanESM2), Range of different rainfall and temperature possibilities (MIROC5). Each grid cell is 6 kilometers (km) by 6 km, or 3.7 miles (mi) by 3.7 mi.
6.2. Initial Climate Risk Scores
Climate Hazard Exposure Score Sensitivity Score Adaptive Capacity Score Vulnerability Score Temperature and Extreme Heat 1 0 0 N/A
Extreme Precipitation N/A N/A N/A N/A
Sea Level Rise 1 0 0 N/A
Wildfire 1 0 0 N/A
Flooding N/A N/A N/A N/A
Drought N/A N/A N/A N/A
Snowpack Reduction N/A N/A N/A N/A
Air Quality Degradation 0 0 0 N/A Page 367 of 2424
Savi Ranch Parkway Widening/Connect Savi Ranch Detailed Report, 5/18/2025 41 / 46
The sensitivity score reflects the extent to which a project would be adversely affected by exposure to a climate hazard. Exposure is rated on a scale of 1 to 5, with a score of 5 representing the greatest exposure.
The adaptive capacity of a project refers to its ability to manage and reduce vulnerabilities from projected climate hazards. Adaptive capacity is rated on a scale of 1 to 5, with a score of 5 representing the greatest ability to adapt.
The overall vulnerability scores are calculated based on the potential impacts and adaptive capacity assessments for each hazard. Scores do not include implementation of climate risk reduction measures.
6.3. Adjusted Climate Risk Scores
Climate Hazard Exposure Score Sensitivity Score Adaptive Capacity Score Vulnerability Score Temperature and Extreme Heat 1 1 1 2
Extreme Precipitation N/A N/A N/A N/A
Sea Level Rise 1 1 1 2
Wildfire 1 1 1 2
Flooding N/A N/A N/A N/A
Drought N/A N/A N/A N/A
Snowpack Reduction N/A N/A N/A N/A
Air Quality Degradation 1 1 1 2
The sensitivity score reflects the extent to which a project would be adversely affected by exposure to a climate hazard. Exposure is rated on a scale of 1 to 5, with a score of 5 representing the greatest exposure.
The adaptive capacity of a project refers to its ability to manage and reduce vulnerabilities from projected climate hazards. Adaptive capacity is rated on a scale of 1 to 5, with a score of 5 representing the greatest ability to adapt.
The overall vulnerability scores are calculated based on the potential impacts and adaptive capacity assessments for each hazard. Scores include implementation of climate risk reduction measures.
6.4. Climate Risk Reduction Measures
6.4.1. Temperature and Extreme Heat
User Selected Measures Co-Benefits Achieved Exposure Reduction Sensitivity Reduction Adaptive Capacity Increase D-3: Install Drought Resistant
Landscaping
Water Conservation — 1.00 1.00
EH-8: Use Alternative Pavement
Surfaces
Energy and Fuel Savings — 1.00 —
Savi Ranch Parkway Widening/Connect Savi Ranch Detailed Report, 5/18/2025 42 / 46
7. Health and Equity Details
7.1. CalEnviroScreen 4.0 Scores
The maximum CalEnviroScreen score is 100. A high score (i.e., greater than 50) reflects a higher pollution burden compared to other census tracts in the state.
Indicator Result for Project Census Tract
Exposure Indicators —
AQ-Ozone 64.9
AQ-PM 64.8
AQ-DPM 18.4
Drinking Water 57.2
Lead Risk Housing 9.33
Pesticides 0.00
Toxic Releases 73.0
Traffic 95.2
Effect Indicators —
CleanUp Sites 17.1
Groundwater 14.3
Haz Waste Facilities/Generators 73.8
Impaired Water Bodies 23.9
Solid Waste 66.9
Sensitive Population —
Asthma 7.91
Cardio-vascular 22.6
Low Birth Weights 12.6
Socioeconomic Factor Indicators —
Education 27.2
Housing 54.6
Linguistic 20.6 Page 369 of 2424
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Poverty 12.4
Unemployment 60.6
7.2. Healthy Places Index Scores
The maximum Health Places Index score is 100. A high score (i.e., greater than 50) reflects healthier community conditions compared to other census tracts in the state.
Indicator Result for Project Census Tract
Economic —
Above Poverty 89.23392788
Employed 85.57679969
Median HI 92.4547671
Education —
Bachelor's or higher 91.91582189
High school enrollment 17.87501604
Preschool enrollment 73.37354036
Transportation —
Auto Access 98.98626973
Active commuting 3.349159502
Social —
2-parent households 87.84806878
Voting 49.06967792
Neighborhood —
Alcohol availability 97.0101373
Park access 61.56807391
Retail density 14.48736045
Supermarket access 53.29141537
Tree canopy 67.12434236
Housing —
Homeownership 68.57436161
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Housing habitability 76.78686
Low-inc homeowner severe housing cost burden 54.20248941 Low-inc renter severe housing cost burden 56.30694213
Uncrowded housing 79.21211344
Health Outcomes —
Insured adults 84.28076479
Arthritis 89.2
Asthma ER Admissions 91.0
High Blood Pressure 76.3
Cancer (excluding skin) 49.7
Asthma 88.8
Coronary Heart Disease 92.9
Chronic Obstructive Pulmonary Disease 93.7
Diagnosed Diabetes 89.8
Life Expectancy at Birth 67.1
Cognitively Disabled 93.6
Physically Disabled 85.5
Heart Attack ER Admissions 65.4
Mental Health Not Good 89.0
Chronic Kidney Disease 90.3
Obesity 92.8
Pedestrian Injuries 72.8
Physical Health Not Good 93.2
Stroke 93.8
Health Risk Behaviors —
Binge Drinking 26.9
Current Smoker 89.7
No Leisure Time for Physical Activity 86.6
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Climate Change Exposures —
Wildfire Risk 99.0
SLR Inundation Area 0.0
Children 51.6
Elderly 92.1
English Speaking 93.7
Foreign-born 54.4
Outdoor Workers 73.1
Climate Change Adaptive Capacity —
Impervious Surface Cover 73.7
Traffic Density 95.1
Traffic Access 23.0
Other Indices —
Hardship 6.1
Other Decision Support —
2016 Voting 77.6
7.3. Overall Health & Equity Scores
Metric Result for Project Census Tract
CalEnviroScreen 4.0 Score for Project Location (a) 23.0 Healthy Places Index Score for Project Location (b) 89.0 Project Located in a Designated Disadvantaged Community (Senate Bill 535) No Project Located in a Low-Income Community (Assembly Bill 1550) No Project Located in a Community Air Protection Program Community (Assembly Bill 617) No a: The maximum CalEnviroScreen score is 100. A high score (i.e., greater than 50) reflects a higher pollution burden compared to other census tracts in the state. b: The maximum Health Places Index score is 100. A high score (i.e., greater than 50) reflects healthier community conditions compared to other census tracts in the state.
7.4. Health & Equity Measures
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No Health & Equity Measures selected.
7.5. Evaluation Scorecard
Health & Equity Evaluation Scorecard not completed.
7.6. Health & Equity Custom Measures
No Health & Equity Custom Measures created.
8. User Changes to Default Data
Screen Justification
Construction: Off-Road Equipment Area of disturbance would not logistically accommodate graders, scrapers, or rubber tired bulldozers/loaders. Equipment inventory based on prior environmental documentation.
Construction: Construction Phases Schedule provided by City.
Construction: Demolition Demolished roadway, curb, and sidewalk debris.
Construction: On-Road Fugitive Dust Half of on-site water truck travel would be on paved areas.
Construction: Paving Project would include non-asphalt trails and landscaping.
Construction: Trips and VMT Estimates based on project details.
Construction: Architectural Coatings Roadway striping
Attachment C Page 374 of 2424
For individuals with sensory disabilities, this document can be made available in alternative formats. To obtain a copy in an alternate format, please call or write to the City of Yorba Linda; Attn: Rick Yee; 4845 Casa Loma Ave, Yorba Linda, CA 92886; [email protected]; (714) 961-7170.
Natural Environment Study (Minimal Impacts)
Savi Ranch Parkway Widening/Connect Savi Ranch Project
Northeast of the intersection of State Route 91 and Yorba Linda Boulevard, Yorba Linda, Orange County, California
District 12-Orange County
STPCML-5402(034)
November 4, 2025
STATE OF CALIFORNIA
Department of Transportation
Prepared By: ______________________________________ Date: ___________ Kristin Szabo, Senior Biologist/Technical Specialist
(951) 506-2075
40810 County Center Dr., Suite 200, Temecula, CA 92591
Michael Baker International
Approved By: ____________________________________ Date: ___________ Erin Knight, District Biologist
(949) 898-2306
Environmental Analysis - Specialist Branch
California Department of Transportation, District 12
Approved By: ____________________________________ Date: ___________ Alben Phung, Branch Chief
(949) 279-8715
Environmental Analysis - Specialist Branch
California Department of Transportation, District 12
11/04/2025
11/17/25
11/17/2025
Natural Environment Study (Minimal Impacts)
Savi Ranch Parkway Widening/
Connect Savi Ranch Project
NES(MI) 1 November 4, 2025
1. Introduction
The City of Yorba Linda (City), in cooperation with the California Department of Transportation (Caltrans), is proposing the Savi Ranch Parkway Widening/Connect Savi Ranch Project (proposed project). The proposed project is located in the southeast portion of the City, north of the interchange of State Route 91 and Yorba Linda Boulevard. The project would improve the circulation system around Savi Ranch in order to better facilitate ingress and egress, address operational issues related to queuing, and improve mobility near high-volume freeway ramps and interchanges near the state highway system. The proposed project would construct a multi-use trail to address the need for multimodal facilities in Savi Ranch that increase mobility and enhance safety. Work would occur on Yorba Linda Boulevard, Savi Ranch Parkway, Mirage Street, and Old Canal Road.
The proposed project’s limits of disturbance plus a 100-foot buffer (i.e., the biological study area or BSA), approximately 24.6 acres, was analyzed to determine potential impacts to special-status resources. The BSA is within a highly developed area of the City and vegetation is limited to ornamental landscaping areas adjacent to existing roads. No special-status plant species were detected nor are expected to occur within the BSA due to the lack of suitable habitat. Similarly, no special-status animal species were detected within the BSA. However, one special-status animal species, monarch butterfly (Danaus plexippus plexippus, federal proposed threatened) has a low potential to use trees in the BSA to roost.
This project is located outside of National Oceanic and Atmospheric Administration (NOAA) Fisheries jurisdiction; therefore, a NOAA Fisheries species list is not required and no effects on NOAA Fisheries species are anticipated.
The BSA does not support regulated aquatic features; therefore, no regulatory permits from the US Army Corps of Engineers (USACE), Regional Water Quality Control Board (RWQCB), or California Department of Fish and Wildlife (CDFW) are required.
To avoid and minimize potential indirect impacts to water quality within the Santa Ana River, the project will implement regulatory compliance project features. These include adherence to all applicable water quality permits, preparation and implementation of a Storm Water Pollution Prevention Plan (SWPPP) and a Water Quality Management Plan (WQMP), and use of construction and post-construction best management practices (BMPs) to control pollutants and runoff.
To ensure compliance with the Migratory Bird Treaty Act, a preconstruction nesting bird survey is required. Additionally, best management practices have been included to minimize the risk of the spread of invasive plant species pre-, during, and postconstruction.
Natural Environment Study (Minimal Impacts)
Savi Ranch Parkway Widening/
Connect Savi Ranch Project
NES(MI) 2 November 4, 2025
Per Local Assistance requirements, Caltrans reviews and approves only the National Environmental Policy Act (NEPA) analysis. Analysis complying with the California Environmental Quality Act (CEQA) will be the responsibility of the local public agency (i.e., the City of Yorba Linda) applying for funding through the local assistance program.
1.1 Project History
1.1.1 Project Purpose and Need
The project proposes improvements to Savi Ranch Parkway, Yorba Linda Boulevard, and Mirage Street, as well as the addition of a multiuse pedestrian and bicycle trail. The project would improve the circulation system around Savi Ranch in order to better facilitate ingress and egress, address operational issues related to queuing, and improve mobility near high-volume freeway ramps and interchanges near the state highway system. The proposed project would construct a multi-use trail to address the need for multimodal facilities in Savi Ranch that increase mobility and enhance safety.
Savi Ranch Parkway experiences substantial traffic congestion, especially during peak hours. The westbound left-turn lanes are over capacity, causing long queues that obstruct the intersection at Mirage Street. The free right-turn lanes from Yorba Linda Boulevard and Mirage Street onto Savi Ranch Parkway also experience queue spillback due to short distances between intersections.
The project seeks to enhance circulation around Savi Ranch, addressing queuing issues and improving access near freeway ramps and interchanges. The multiuse trail will promote multimodal transportation, increasing mobility and safety in the area.
1.2 Project Description
The proposed project is located in northeastern Orange County north of State Route 91 (Appendix A, Figure 1, Regional Vicinity). The project proposes roadway and multiuse trail improvements within and surrounding Savi Ranch, a primary job center consisting of retail, commercial, industrial, and office uses. The project is located in Section 29, Township 03 South, Range 08 West, of the Black Star Canyon and Prado Dam 7.5- minute US Geological Survey (USGS) quadrangle maps (Appendix A, Figure 2, Site Vicinity).
The proposed project includes roadway and multiuse trail improvements along Savi Ranch Parkway, Yorba Linda Boulevard, Mirage Street, and Old Canal Road (Appendix A, Figure 3, Proposed Project and Biological Study Area) as detailed below and in the project’s Preliminary Environmental Study Form.
1.2.1 Roadway Improvements
Savi Ranch Parkway: The proposed project would widen Savi Ranch Parkway to provide a third westbound left-turn lane at the Yorba Linda Boulevard intersection. The westbound free right-turn lane from Mirage Street would be reconfigured into a
Natural Environment Study (Minimal Impacts)
Savi Ranch Parkway Widening/
Connect Savi Ranch Project
NES(MI) 3 November 4, 2025
signalized right-turn lane, and the existing median at this location would be removed.
The eastbound free right-turn lane from Savi Ranch Parkway onto Mirage Street would be eliminated to increase pedestrian safety and vehicular mobility, and the existing eastbound left-turn lane would be lengthened from 300 feet to 430 feet to allow additional storage. Other roadway improvements would include median layout modifications and traffic signal modifications at the Yorba Linda Boulevard and Mirage Street intersections.
Yorba Linda Boulevard: The proposed project would eliminate the eastbound free rightturn and adjacent raised median at Savi Ranch Parkway to address pedestrian safety and increase vehicular mobility. The project would widen Yorba Linda Boulevard on the easterly side to provide two right-turn lanes while maintaining the existing through lanes.
A length of 450 feet would be provided for right-turn storage. Additional improvements include a modification to the existing sidewalk connecting to an adjacent restaurant use (Taco Bell) and relocation of an existing Savi Ranch monument sign.
Mirage Street: The proposed project would eliminate the existing southbound yield rightturn at Savi Ranch Parkway to address pedestrian safety and increase vehicular mobility; include a sidewalk on the west side of Mirage Street from Savi Ranch Parkway to the existing driveway for the PetSmart and Staples parking lot; and include Americans with Disabilities Act (ADA) compliant access ramps and paths of travel.
1.2.2 Multiuse Trail
The project would include a Class I off-street multiuse path on Savi Ranch Parkway and Mirage Street and a Class IV separated bikeway along Old Canal Road. The proposed bikeways would be 12 feet wide with asphalt concrete surfaces.
1.2.3 Retaining Walls
The proposed project would install four retaining walls. A new retaining wall along the west side of Mirage Street would be approximately 79 feet long and 8 feet tall; a new retaining wall along the north side of Savi Ranch Parkway would replace an existing retaining wall and be approximately 472 feet long and 12 feet tall; a new retaining wall along the south side of Savi Ranch Parkway would be approximately 300 feet long and 10 feet tall; and a new retaining wall along the east side of Yorba Linda Boulevard would be approximately 92 feet long and 9 feet tall.
1.2.4 Right-of-Way
The proposed project requires approximately 0.38 acres of permanent public utility and roadway easements and approximately 0.73 acres of temporary construction easements within Assessor’s Parcel Numbers 352-112-03 (Staples), 352-112-04 (PetSmart), 352-113-01, 352-113-02 (Sprouts), and 352-117-01, -02, -03 (Taco Bell).