7(b) Result in substantial soil erosion or the loss of topsoil? Less Than Significant Impact. The Project would facilitate and provide a policy framework for future housing development on candidate housing sites throughout the City, which are situated in urbanized areas. Therefore, future development facilitated by the HEU would involve grading activities that would disrupt soil profiles, and thereby result in potential increased exposu re of soils to wind and rain. Erosion on graded slopes could cause downstream sedimentation impacts.
Other related impacts resulting from substantial short -term erosion or loss of topsoil include topography changes and the creation of impervious surfaces.
All future housing development facilitat ed by the HEU would be subject to the City’s development review process, which may include review pursuant to CEQA, and be required to comply with GP policies, Rialto MC standards, as well as be require to adhere to all federal, state, and local requireme nts for avoiding and minimizing impacts concerning soil erosion or loss of topsoil.
Prior to initiation of ground disturbing activities, future project applicants would be required to demonstrate compliance with the Rialto MC including requirements pertaining to erosion control to the satisfaction of the City engineer. Short -term construction -related erosion would be addressed through compliance with the National Pollution Discharge and Elimination System (NPDES) program, which requires implementation of a Storm Water Pollution Prevention Plan (SWPPP) and best management practices (BMPs) intended to reduce soil erosion. Following compliance with the established regulatory framework, future housing development facilitat ed by the HEU would not result in substantial soil erosion or loss of topsoil. Therefore, impacts would be less than significant.
7(c) Be located on a geologic unit or soil that is unstable, or that would become unstable as a result of the project, and po tentially result in on - or off -site land slide, lateral spreading, subsidence, liquefaction or collapse?
7(d) Be located on expansive soil, as defined in Table 18‐1‐B of the Uniform Building Code (1994), creating substantial direct or indirect risks to life or property? Less Than Significant Impact . See Response 7(a)iii & iv above concerning liquefaction and landslides.
Subsidence occurs when a large portion of land is displaced vertically, usually due to the withdrawal of gr oundwater, oil, or natural gas. Soils that are particularly subject to subsidence include those with high silt or clay content.
The Project would facilitate and provide a policy framework for future housing development on candidate housing sites throughou t the City , which are situated in urbanized areas. There is a potential that candidate housing sites could be located on geologic unit or soil that is unstable, or expansive soil. Thus, all future housing developments facilitated by the HEU would be subject Rialto 6th Cycle HEU
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to environmental review under CEQA, the City’s development review process, and required to adhere to all federal, state, and local requirements, including the City’s Building and Construction codes ( Rialto MC §15). Considering these requirements, includi ng the preparation of Soils Engineering Reports for future housing developments, future housing development facilitated by the HEU would not c reate substantial risks to life or property associated with expansive soils.
Therefore, impacts would be less than significant.
7(e) Soil capability to support waste water disposal, including septic tanks or alternative waste water disposal systems where sewers are not available for the disposal of waste water?
No Impact. All future housing development facilitated b y the HEU would be in areas served by the City’s sanitary sewer system and would therefore not use septic tanks or other alternative wastewater disposal systems. Therefore, no impact would occur in this regard. 7(f) Directly or indirectly destroy a unique paleontological resource or site or unique geologic feature?
Less Than Significant Impact. According to the GP FEIR, excavation and other ea rthmoving activities within surface and subsurface exposures of Pleistocene era alluvium materials could disturb a unique paleontological resource. 25 The Project would facilitate and provide a policy framework for future housing development on candidate hou sing sites throughout the City , which are situated in urbanized areas . However, approximately 66 percent of the candidate housing sites are developed to varying degrees with residential and non -residential uses. The urbanized nature of these sites has inev itably reduced surface soil and shallow subsurface sediments for intact, potentially significant paleontolog ical resources. Notwithstanding, if previously unknown paleontological resources are discovered during grading/other earth - moving activities associa ted with future development, a substantial adverse change in the significance of such a resource could occur . The potential exists that earthwork activities associated with future housing development facilitated by the HEU would encounter a paleontological resource. Direct impacts to paleontological resources could occur when earthwork activities (e.g., grading) cut into sensitive paleontological areas, thereby directly damaging the resource, or exposing paleontological resources to potential indirect impac ts (e.g., surficial erosion, uncontrolled specimen collection).
All future housing development facilitated by the HEU would be subject to the City’s development review process, which may include review pursuant to CEQA, and be required to comply with GP policies, Rialto MC standards, as well as be required to adhere to all relevant Federal and State regulation s regarding paleontological resources. The City’s development review process may require additional studies if paleontological resources are suspect ed to be impacted by future development on future candidate housing sites. Following compliance with
25 City of Rialto. General Plan Update Final Environmental Impact Report State Clearinghouse Number 2008071100 (2010). Page 121.
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the est ablished regulatory framework, potential impacts from future housing development concerning the destruction of a unique paleontological resource or unique geologic feature would be less than significant.
Standard Conditions and Requirements
None are applicable to the project.
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GREENHOUSE GAS EMISSIONS
ENVIRONMENTAL IMPACTS
Issues
Potentially
Significant
Impact
Less Than
Significant
With
Mitigation
Incorporated
Less Than
Significant
Impact
No
Impact
8. GREENHOUSE GAS EMISSIONS. Would the project:
a) Generate greenhouse gas emissions, either directly or indirectly, that may have a significant impact on the
environment?
X
b) Conflict with applicable plan, policy or regulation adopted for the purpose of reducing the emissions of greenhouse gases?
X
8(a) Generate greenhouse gas emissions, either directly or indirectly, that may have a significant impact on the environment?
Less Than Si gnificant Impact. The project would not result in direct housing construction but would facilitate and provide a policy framework for future housing development on candidate housing sites throughout the City. As noted in Section 14: Population and Housing , the future housing development facilitated by the HEU would result in an unplanned population growth of 22,568 persons or 21.7 percent from the estimated 2020 population of 104,110, as shown in Table 2-1.
Future housing development facilitated by the HEU would result in an increase in GHG emissions due to increased VMT, construction activities, stationary area sources (i.e., natural gas consumption for space and water heating devices, landscape maintenance equipment operations, and use of consumer products), energy consumption, water supply, and solid waste generation. Increased GHG emissions could contribute to global climate change patterns and the adverse global environmental effects thereof. GHG emissions associated with future development are anticipated to include CO2, N2O, and CH4. Future housing development would be subject to the City’s development review process, CEQA evaluation, and plan check process, which may require that future applicants prepare air quality and greenhouse gas emission studies using the California Emissions Estimator Model (CalEEMod). CalEEMod relies upon project - specific land use data to calculate emissions. Site -specific details are not available for this HEU analysis, which is programmatic in nature.
The SCAG’s Connect SoC al: The 2020 – 2045 Regional Transportation Plan/Sustainable Communities Strategy (RTP/SCS) is a long-range visioning plan that balances future mobility and housing needs with economic, environmental and public health goals.26 The City’s existing zoning
26 SCAG. Connect SoCal (2020). Retrieved from https://scag.ca.gov/connect-socal. Accessed on August 25, 2021.
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could pot entially facilitate housing developing in certain commercially -zoned areas, and therefore reduce VMT and GHG impacts by creating housing opportunities in areas with pedestrian connectivity between residential and commercial uses and near public transportation, along established transportation corridors, near recreation opportunities, and away from environmentally sensitive resources. As a result, fewer VMT results in fewer GHG emissions.
Future housing development facilitated by the project would also be re quired to meet the mandatory energy requirements of California Green Building Standards Code (CALGreen) and the Energy Code (CCR Title 24, Part 6) in effect at the time of development. These regulations require that new development incorporate design features to capture energy efficiencies associated with building heating, ventilating, and air conditioning mechanical systems, water heating systems, and lighting. Therefore, the project’s potential impact concerning generating GHG, either directly or i ndirectly, that may have a significant impact on the environment would be less than significant.
8(b) Conflict with an applicable plan, policy, or regulation adopted for the purpose of reducing the emissions of greenhouse gases.
Less Than Significant Impac t. The project would not result in direct housing construction but would facilitate and provide a policy framework for future housing development on candidate housing sites throughout the City. These candidate housing sites are spread throughout the City, as dep icted in Exhibit 2-3: Map Candidate Housing Sites . As summarized in Section 14:
Population and Housing, additional unplanned housing developments facilitated by the Project would exceed growth projections estimated by SCAG. Therefore, the additional housing associated with the Project could inherently generate GHG emissions that exceed previous estimates or established limitations. Future housing development facilitated by the Project could result in an increase in GHG due to increased vehicle miles traveled (VMT), construction activities, stationary area sources (i.e., natural gas consumption for space and water heating devices, landscape maintenance equipment operations, and use of consumer products), energy consumption, water supply, and solid waste generation. Increased GHG emissions could contribute to global climate change patterns and the adverse global environmental effects thereof. GHG emissions associated with future development are anticipated to include CO2, N2O, and CH 4. At the time of thei r initiation, new developments facilitated by the Project would be required to comply with applicable federal, state, and local regulations regarding GHG emission.
This includes policies instituted by SCAQMD in which developers would be required to comply with one of five exclusion tiers in order to avoid significant environmental impacts. Furthermore, future projects facilitated by the Project would continue to be required to comply with the California Building Code, which includes Title 24, Part 11. This requires residential developments to be planned and developed in a manner that is consistent with any applicable regulations involving energy efficiency, water efficiency/conservation, material conservation and resource efficiency, and environmental quality.
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The HEU would not directly generate additional GHG emissions within the City, however, t he Project would facilitate and provide a policy framework for future housing development on candidate housing sites throughout the City , which are situated in urban ized areas. The Project is proposed in accordance with the State Housing Law and general plan laws. To be in compliance with the laws, the Project would need to be created within the framework provided by State law and would therefore not conflict with oth er established State laws such as GHG regulations.
Further, future development facilitated by the Project would be required to comply with existing GHG regulations and with the proposed additions to the Rialto GP. Therefore, potential impacts to GHG levels as a result of Project implementation would be less than significant.
Standard Conditions and Requirements
None are applicable to the project.
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HAZARDS AND HAZARDOUS MATERIALS
ENVIRONMENTAL IMPACTS
Issues
Potentially
Significant
Impact
Less Than
Significant
With
Mitigation
Incorporated
Less Than
Significant
Impact
No
Impact
9. HAZARDS AND HAZARDOUS MATERIALS. Would the project:
a) Create a significant hazard to the public or the
environment through the routine transport, use, or
disposal of hazardous materials?
X
b) Create a significant hazard to the public or the
environment through reasonably foreseeable upset and
accident conditions involving the release of hazardous
materials into the environment?
X
c) Emit hazardous emissions or handle hazardous or acutely hazardous materials, substances, or waste within one -
quarter mile of an existing or proposed school?
X
d) Be located on a site which is included on a list of
hazardous materials sites compiled pursuant to
Government Code Section 65962.5 and, as a result, would it create a significant hazard to the public or the
environment?
X
e) For a project located within an airport land use plan or, where such a plan has not been adopted, within two miles of a public airport or public use airport, would the project result in a safety hazard or excessive noise for people residing or working in the project area?
X
f) Impair implementation of or physically interfere with an adopted emergency response plan or emergency
evacuation plan?
X
g) Expose people or structures, either directly or indirectly, to a significant risk of loss, injury or death involving wildland fires?
X
9(a) Create a significant hazard to the public or the environment through the routine transport, use, or disposal of hazardous materials?
Less Than Significant Impact. Exposure of the public or the environment to hazardous materials can occur through transport ation accidents; environmentally unsound disposal methods; improper handling of hazardous materials or hazardous wastes (particularly by untrained personnel); and/or emergencies, such as explosions or fires. The severity of these potential effects varies b y type of activity, concentration and/or type of hazardous materials or wastes, and proximity to sensitive receptors.
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The project would not result in direct housing construction but would facilitate and provide a policy framework for future housing develop ment on candidate housing sites throughout the City. Demolition and construction activities associated with future housing development would require transport of hazardous materials (e.g., asbestos containing materials, lead -based paint, and/or contaminated soils). This transport would be limited in duration. Compliance with handling measures is required by the City and the State Department of Toxic Substances Control (DTSC) during construction of future development projects. These measures inclu de standards and regulations regarding the storage, handling, and use of hazardous materials.
Future housing development facilitated by the HEU would not involve ongoing or routine use of substantial quantities of hazardous materials during operations (occ upancy of future housing).
Only small quantities of hazardous materials would be anticipated including cleaning so lvents, fertilizers, pesticides, and other materials used in regular maintenance. Impacts associated with the transport, use, or disposal of h azardous materials would be less than significant following compliance with the established regulatory framework.
9(b) Create a significant hazard to the public or the environment through reasonably foreseeable upset and accident conditions involving the release of hazardous materials into the environment?
Less Than Significant Impact . The Project would facilitate and provide a policy framework for future housing development on candidate housing sites throughout the City, which are situated in urbanized are as. Therefore, excavation and grading activities associated with future housing development could expose construction workers and the general public to unknown hazardous materials present in soil or groundwater. All future housing development on the candid ate housing sites in the City would be reviewed to confirm compliance with all applicable requirements, including the City’s development review process, and be subject to compliance with the established regulatory framework for minimizing upset associated with hazardous materials. Compliance with MM HAZ-1, which requires preparation of a project -specific Phase I Environmental Site Assessment (ESA) for any property currently or historically involving hazardous materials or waste, would be required. The Phase I ESA may require further sampling/remedial activities by a qualified hazardous materials Environmental Professional with Phase II/site characterization experience. The future developments facilitated by the Project would be required to comply with all ap plicable Federal, State, and local regulations hazardous materials. Following compliance with the established regu latory framework and MM HAZ -1, potential impacts involving the accidental discovery of unknown wastes or suspect materials during construction would be less than significant.
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9(c) Emit hazardous emissions or handle hazardous or acutely hazardous materials, substances, or waste within one-quarter mile of an existing or proposed school? Less Than Significant Impact. The Project would facilitate and provide a policy framework for future housing development on candidate housing sites throughout the City, which are situated in urbanized areas. Future housing development facilitated by the HEU could be located within
0.25-mile of an existing or proposed school, future residential development by its nature would not emit hazardous emissions or handle hazardous or a cutely hazardous materials, sub stances, or waste. Further, all future housing development facilitated by the HEU would be subject to the City’s development review process, which may include review pursuant to CEQA, and be required to comply with GP policies, Rialto MC standards, as well as be required to adhere to regulations related to the emissions or handling of hazardous materials, substances, or wastes near schools to reduce the potential for impacts to schools. Adherence to California Hazardous Waste Control Law, California Health and Safety Code, and Resource Conservation and Recovery Act (RCRA) regulations would reduce potential impacts associated with the accidental release of hazardous materials. As a result, future housing development facilitated by the HEU would not conflict with any State or local plan aimed at preventing emissions or handling of hazardous materials near schools. Therefore, impacts would be less than significant. 9(d) Be located on a site which is included on a list of hazardous materials sites compiled pursuant to Government Code Section 65962.5 and, as a result, would it create a significant hazard to the public or the environment?
No Impact. Government Code §65962.5 (commonly referred to as the Cortese List) includes DTSC-listed hazardous waste facilities a nd sites, Department of Health Services lists of contaminated drinking water wells, sites listed by the SWRCB as having underground storage tank leaks and hav ing had a discharge of hazardous wastes or materials into the water or groundwater, and lists from local regulatory agencies of sites that have had a known migration of hazardous waste/material. None of the candidate housing sites are included on the hazardous sites list compiled pursuant to California Government Code §65962.5. However, some candidate housing sites may have land use restrictions for future development. Therefore, no impact would occur in this regard.
9(e) For a project located within an airport land use plan or, where such a plan has not been adopted, within two miles of a public airpor t or public use airport, would the project result in a safety hazard or excessive noise for people residing or working in the Project area?
No Impact. No portion of the City is within an airport land use plan. Additionally, there are no public airports or public use airports within two miles of the City. The Rialto Airport, previously known as Miro Field, was closed in 2014. Therefore, the Project woul d not result in a safety hazard or excessive noise for people residing or working in the HEU area. No impact would occur in this regard.
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9(f) Impair implementation of an emergency response plan or emergency evacuation plan? Less Than Significant Impact. The City has developed an extensive Emergency Operations Plan (EOP) called SE MS/NIMS Multi -hazard Functional Plan (MHFP). SEMS is the California Standardized Emergency Management System and NIMS is the National Incident Management System. The SEMS/NIMS MHFP addresses the City of Rialto's planned response to extraordinary emergency situations associated with natural disasters, technological incidents, and national security emergencies and incorporates and coordinates all the facilities and personnel of the City into an efficient organization capable of responding to any emergency. This involves a high level of multi -jurisdictional cooperation and communication for emergency planning and response management through activation of SEMS. General Plan Policies 5-7.1 through 5-8.4 also outlines emergency response and preparation guidelines.
The Project would facilitate and provide a policy framework for future housing development on candidate housing sites throughout the City , which are situated in urbani zed areas . Future housing development facilitated by the HEU would increase allowable housing density in certain areas of the City. This increase in density could result in an increased demand on emergency evacuation services in the event of a citywide or partial city emergency. However, no changes in the City’s existing circulation network are anticipated under the HEU and no impact to emergency response or evacuation is anticipated. All future housing development facilitated by the HEU would be subject to the City’s development review process, which may include review pursuant to CEQA, and be required to comply with GP policies, Rialto MC §18.61.190(D) which requires developers to include suitable site access for emergency vehicles , . With continued use of SEMS and Local Hazard Mitigation Plan, and implementation of the City’s GP policies, the Project would result in less than significant impacts concerning emergency response plans. Impacts would be less than significant.
9(g) Expose people or structures, e ither directly or indirectly, to a significant risk of loss, injury or death involving wildland fires?
Less Than Significant Impact. Refer to Section 20: Wildfire.
Mitigation Measure
MM HAZ-1 Prior to any renovation, or demolition, grading or building permit approval, the applicant shall retain a qualified hazardous materials Environmenta l Professional to prepare a formal Phase I Environmental Site Assessment (ESA) for any vacant, commercial, and industrial properties involving hazardous materials or waste. The Phase I ESA shall be prepared in accordance with ASTM Standard Practice E 1527- 13 or the Standards and Practices for All Appropriate Inquiry (AAI), prior to any land acquisition, demoliti on, or construction activities. The Phase I ESA would identify specific Recognized Environmental Conditions (RECs), which may require further sampli ng/remedial activities by a qualified hazardous materials Rialto 6th Cycle HEU
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Environmental Professional with Phase II/site characterization experience prior to land acquisition, demolition, and/or construction. The Environmental Professional shall identify proper remedial ac tivities to be implemented by the applicant, if necessary.
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HYDROLOGY AND WATER QUALITY
ENVIRONMENTAL IMPACTS
Issues
Potentially
Significant
Impact
Less Than
Significant
With
Mitigation
Incorporated
Less Than
Significant
Impact
No
Impact
10. HYDROLOGY AND WATER QUALITY. Would the project:
a) Violate any water quality standards or waste discharge requirements or otherwise substantially degrade surface or groundwater quality?
X
b) Substantially decrease groundwater supplies or interfere substantially with groundwater recharge such that the
project may impede sustainable groundwater
management of the basin?
X
c) Substantially alter the existing drainage pattern of the site or area, including through the alteration of the course of a stream o r river or through the addition of impervious surfaces, in a manner which would:
X
i. Result in substantial erosion or siltation on- or off-site? X ii. Substantially increase the rate or amount of surface runoff in a manner which would result in f looding on- or off-site?
X
iii. Create or contribute runoff water which would exceed the capacity of existing or planned stormwater drainage systems or provide substantial additional sources of
polluted runoff?
X
d) In flood hazard, tsunami, or sei che zones, risk release of pollutants due to project inundation?
X
e) Conflict with or obstruct implementation of a water
quality control plan or sustainable groundwater
management plan?
X
10(a) Violate water quality or waste discharge requirement s or otherwise substantially degrade surface or groundwater quality?
Less Than Significant Impact. The project would not result in direct housing construction but would facilitate and provide a policy framework for future housing development on candidate housing sites throughout the City. Future housing development could result in potential impacts related to water quality over three different periods:
• During the earthwork and construction phase, where the potential for erosion, siltation, and sedimentation would be the greatest.
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• Following construction, before the establishment of gr ound cover, when the erosion potential may remain relatively high; and
• After project completion, when impacts related to sedimentation would decrease markedly but those associated with urban runoff would increase.
Urban runoff, both dry and wet weather, di scharges into storm drains, and in most cases, flows directly to creeks, rivers, lakes, and the ocean.
Construction
Short‐term impacts related to water quality can occur during the earthwork and construction phases of future housing development projects. D uring this phase, the potential for erosion, siltation, and sedimentation would be the greatest. Additionally, impacts could occur prior to the establishment of ground cover when the erosion potential may remain relatively high. All future housing development facilitated by the HEU would be subject to the City’s development review process, which may include review pursuant to CEQA, and be required to comply with GP policies, Rialto MC standards, and adhere to the established regulatory framework pertaining to water quality. If future developments disturb more than one acre of land surface, they would be required to obtain coverage under the National Pollution Discharge Elimination System (NPDES) storm water program. The NPDES Construction General Permit prog ram calls for the implementation of best management practices (BMPs) to reduce or prevent pollutant discharge from these activities to the Maximum Extent Practicable for urban r unoff and meeting the Best Available Technology Economically Achievable and Bes t Conventional Pollutant Control Technology standards for construction storm water. Construction activities would be required to comply with a project‐specific Stormwater Pollution Prevention Program (SWPPP) that identifies erosion‐control and sediment‐control BMPs that would meet or exceed measures required by the Construction Activity General Permit to control potential construction ‐related pollutants.
Erosion‐control BMPs are designed to prevent erosion, whereas sediment controls are designed to trap sediment once it has been mobilized.
Additionally, the future development projects facilitated by the HEU would be required to comply with the City’s Storm Water Management and Dis charge Control Ordinance ( Rialto MC §12.60.260). The Stormwater Ordinance establishes requirements for the management of storm water flows from development projects, both to prevent erosion and to protect and enhance existing water -dependent habitats. The Ordinance assures consistency with the purpose and intent of this chapter and shall implement the requirements of an NPDES Permit.
Operations
Due to the City’s built -out nature, most surface flows are directed toward existing stormwater drainage facilities. The Project would facilitate and provide a policy framework for future housing development on candidate housing sites throughout the City , which are situated in urbanized Rialto 6th Cycle HEU
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areas. Therefore, the project’s operations could potentially violate water quality standards or waste discharge requi rements or otherwise substantially degrade surface or groundwater quality.
All future housing development facilitated by the HEU would be subject to the City’s development review process, which may include review pursuan t to CEQA, and be required to comply with GP policies and the Rialto MC §12.60 to install, implement, and maintain the BMPs, including but not limited to , erosion management; materials storage; inspection, maintenance, repair, upgrade of BMPs; and preparation of a SWPPP. Additionally, future developments would be required to comply with Rialto MC §12.60 pertaining to Residential BMP requirements including minimum BMPs specified for landscaping, home care and maintenance, and motor vehicle maintenance.
All new development would also be required to comply with existing water quality standards and waste discharge regulations set forth by the State Water Quality Control Board (SWQCB). Future developments facilitated by the HEU would comply with these regulations and waste discharges would be connected to the public wastewater system.
Future housing development facilitated by the HEU would be required to adhere to all federal, state, and local requirements for avoiding violation of water quality standards during construction and operations. Consi dering these requirements, any potential impacts caused by future housing developments facilitated by the HEU would be reduced and not violate any water quality standards or waste discharge requirements or otherwise substantially degrade surface or groundwater quality. Therefore, impacts would be less than significant. 10(b) Substantially decrease groundwater supplies or interfere substantially with groundwater recharge such that the project may impede sustainable groundw ater management of the basin?
Less Than Significant Impact. In 2014, the State of California adopted the Sustainable Groundwater Management Act (SGMA) to help manage its groundwater. The SGMA requires that local Groundwater Sustainability Agency (GSAs) be formed for all high and medium priority basins in the State. These GSAs must develop and implement Groundwater Sustainability Plans (GSPs) for managing and using groundwater without causing undesirable results.
The City’s potable water supply is served by three water agencies: the City of Rialto Department of Public Works Water Division, the West Valley Water District (WVWD), and the Fontana Water Company (FWC), as shown in Exhibit 3-2 of the Rialto GP. Each agency has an adjudicated supply of water from s everal sources, including groundwat er basins in the area. The City’s primary source of water is City-owned water wells. These wells draw water from four water basins: Lytle Creek Surface Water Basin, Rialto Ground Water Basin, Bunkerhill Ground Water Basin, and Chino Hill Ground Water Basin. According to the GP FEIR, each of these basins has an established safe Rialto 6th Cycle HEU
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yield limit to prevent over drafting of groundwater resources. Water districts are not permitted to extract beyond safe yield limits and will not be able to over the long-term.
Approximately 158 candidate housing sites are vacant (excluding LCRSP areas, previously evaluated in the LCRSP FEIR) . Future developments facilitated by the Project could potentially increase the City’ s impervious surface area (ISA) from development of these 158 candidate housing sites. Increased ISA on the remaining candidate sites is anticipated to be nominal given these sites are already fully improved. As well, these candidate housing sites were p reviously designated for development w ith the increased ISA included in fut ure growth projections. The project is not anticipated to interfere substantially with groundwater recharge such that the project would impede sustainable groundwater management of the basin.
Additionally, construction of any potential projec t that would involve excavation into or below the water table would require dewatering and those dewatering operations would need to comply with all dewatering requirements to protect groundwater quality and supply. This is coupled with the BMPs that will be utilized during construction as laid out in the SWPPP to limit the amount of pollution in stormwater that recharges groundwater basins. With the proper implementation of stormwater BMPs, the impact of potential projects on groundwater resources would be minimized and these impacts would be less than significant. 10(c) Substantially alter the existing drainage pattern of the site or area, including through the alteration of the course of a stream or river or through the addition of impervious surfaces, in a manner which would:
i) Result in substantial erosion or siltation on- or off-site? ii) Substantially increase the rate or amount of surface runoff in a manner which would result in flooding on- or off-site?
iii) Create or contribute runoff water which would exce ed the capacity of existing or planned storm water drainage systems or provide substantial additional sources of polluted runoff??
iv) Impede or redirect flood flows?
Less Than Significant Impact . The Project would not result in direct housing construction but would facilitate future housing development throughout the City. Most candidate housing sites are developed and contain impervious surfaces, which direct surface flows toward existing City facilities. Due to the primarily built -out nature of the City, con struction of future housing developments facilitated by the HEU would not substantially alter the existing drainage pattern through the addition of impervious surfaces. The drainage areas, as well as the drainage characteristics/patterns in the implementation condition would be similar to existing conditions.
All future housing development facilitated by the HEU would be subject to the City’s development review process, which may include review pursuant to CEQA, and be required to comply with GP policies, R ialto MC standards, and required to adhere to all federal, state, and Rialto 6th Cycle HEU
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local requirements for avoiding impacts that could substantially alter the existing drainage pattern or alter the course of a stream or river, including the City’s Stormwater Management and Discharge Control Ordinance (Rialto MC §12.60.260).
Considering these requirements, future housing development facilitated by the HEU would not substantially alter the existing drainage pattern of the site or area. This includes no alteration of the course of a stream or river, in a manner which would result in substantial erosion or siltation on- or off-site, substantially increase the rate or amount of surface run off in a manner which would result in flooding on or off-site, create or contribute runoff water which would exceed the capacity of existing or planned stormwater drainage systems, or provide substantial additional sources of polluted runoff, or impede or redirect flood flows. Therefore, impacts would be less than significant.
10(d) In floo d hazard, tsunami, or seiche zones, risk release of pollutants due to project inundations?
Less Than Significant Impact. The City of Rialto is located approximately 45 miles inland from the Pacific Ocean. Given the distance from the coast, the potential for the Project site to be inundated by a large, catastrophic tsunami is extremely low. No steep slopes are in the vicinity of the City; therefore, the r isk of mudflow is insignificant. Additionally, as previously noted the Federal Emergency Management Agency (FEMA) identifies most of the City of Rialto to be in Flood Hazard Zone X, which is identified as 500-year Floodplain, an area of minimal flood hazard.
Furthermore, all future housing development facilitated by the HEU would be subject to the City’s development review process, which may include review pursuant to CEQA, and be required to comply with GP policies, Rialto MC standards, and required to adh ere to all federal, state, and local requirements for avoiding and minimizing impacts related to flood ha zards, tsunami, or seiches, including the Rialto GP policies and Rialto MC codes. Considering these requirements, the future housing development facilitated by the HEU would not result in significant increased risk concerning release of pollutants due to inundation, tsunami, or seiche zones. Therefore, HEU impacts would be less than significant.
10(e) Conflict with or obstruct implementation of a water quality control plan or sustainable groundwater management plan?
Less Than Significant Impact. In 2014, the California Sustainable Groundwater Management Act (SGMA) was passed, which provides authority for agencies to develop and implement groundwater sustainability plans (GSP) or alternative plans that demonstrate the water basins are being managed sustainab ly. As discussed under Threshold 10b, the City is unlikely to face groundwater impacts through the implementation of the Project. Therefore, future ho using development facilitated by the HEU would not obstruct implementation of the Sustainable Groundwater Management Act (SGMA).
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Initial Study/Mitigated Negative Declaration
The City’s Stormwater Management and Discharge Control Ordinance ( Rialto MC §12.60.260) aims to protect water resources and imp rove water quality. The ordinance causes use of management practices by the city and its citizens that will reduce the adverse effects of polluted runoff discharges on waters of the state and control contribution of pollutants to the City’s municipal separate storm sewer systems (MS4s), and to ensure that the City is compliant with RWQCB and with applicable state and federal law.
Future developments facilitated by the HEU would be required to prepare a stormwater management plan and incorporate stormwater s tandards manual requirements into design documents to minimize potential impacts to water quality. Submit ted materials would be required to demonstrate how the requirements of this stormwater ordinance would be met, and the permit or approval would not be approved unless the decision maker determines that the application complies.
Further, dischargers whose projects disturb one or more acres of soil or whose projects disturb less than one acre but are part of a larger common plan of development that in total disturbs one or more acres, are required to comply with the General Permit for Discharges of Stormwater Associated with Construction Activity (Construction General Permit Order 2009-0009-DWQ). The Construction General Permit requires the development of a SWPPP by a certified Qualified SWPPP Developer.
All future housing development facilitated by the HEU wo uld be subject to the City’s development review process, which may include review pursuant to CEQA, and be required to comply with GP policies, Rialto MC standards, and required to adhere to all federal, state, and local requirements for avoiding and minim izing conflicts with or obstruction of implementation of a water quality control plan or sustainable groundwater management plan. Further, future housing development facilitated by the HEU would not prevent the City’s Clean Water Program from ensuring that MS4 Permit and Basin Plan requirements are met. As a result, future housing development facilitated by the HEU would not conflict with or obstruct imp lementation of a water quality control plan or sustainable groundwater management plan. Therefore, impact s would be less than significant.
Standard Conditions and Requirements
None are applicable to the project.
Rialto 6th Cycle HEU
Initial Study/Mitigated Negative Declaration
LAND USE AND PLANNING
ENVIRONMENTAL IMPACTS
Issues
Potentially
Significant
Impact
Less Than
Significant
With
Mitigation
Incorporated
Less Than
Significant
Impact
No
Impact
11. LAND USE AND PLANNING. Would the project:
a) Physically divide an established community? X
b) Cause a significant environmental impact due to a conflict with any land use plan, policy, or regulation adopted for the purpose of avoiding or mitigating an environmental
effect?
X
State Housing law requires that the Housing Element identify specific sites that are potentially suitable for residential development. The City has compiled an inventory of candidate hous ing sites, which includes properties that are dispersed throughout the community to minimize the potential for ad verse changes to the neighborhood character and aesthetics and reduce the potential for adverse environmental impacts. As part of the initial s ite investigation, the candidate housing sites inventory encompassed seven opportunity areas that were identified as potentially suitable areas for future housing expansion (see Exhibit 2-3). The opportunity area locations and candidate housing sites are summarized here and described later in this section:
1. Foothill Boulevard Specific Plan
2. North Riverside Avenue
3. Gateway Specific Plan
4. Rialto Central Area Specific Plan
5. Baseline Parcels
6. Baseline Shopping Center
7. Randall Avenue Sites
Additional candidate housing sites in locations di spersed throughout the City , including within the LCRSP and the Renaissance Specific Plan are also under consideration for future housing as part of the HEU.
11(a) Physically divide an established community?
Less Than Significant Impact. Projects that div ide an established community can involve large scale linear infrastructure, such as freeways, highways, and drainage facilities, that bisect an established community or crate barriers to movement within th at community. Additionally, Rialto 6th Cycle HEU
Initial Study/Mitigated Negative Declaration
“local undesirable land uses,” such as prisons or landfills sites within economically depressed areas can also divide an established community.
As previously noted, the HEU does not propose any development. The Project would not result in direct housing construction but would fa cilitate and provide a policy framework for future housing development throughout the City. All future housing development facilitated by the HEU would be subject to the City’s development review process and would occur as market conditions allow and at the discretion of the individual property owners. However, the HEU would identify a series of implementation actions that would increase housing capacity. Future housing development would largely occur in developed areas and in areas currently zoned with all owed residential uses; therefore, an increase in housing capacity would be consistent with existing zoning and would not divide an established community. It is not anticipated that future housing development facilitated by the HEU would require substantial road-widenings or other features which could divide the established community. As well, candidate housing sites have been identified throughout the City, rather than concentrated in a single area , thus would not divide an established community. For this reason, a less than significant impact would occur. 11(b) Conflict with any applicable land use plan, policy, or regulation of an agency with jurisdiction over the project (including, but not limited to the general plan, specific plan, local coastal progr am, or zoning ordinance) adopted for the purpose of avoiding or mitigating an environmental effect?
Less Than Significant Impact. The HEU includes seven opportunity areas for future housing development to meet the City’s RHNA allocation of 8,272 housing unit s. As previously noted above, the project would not result in direct housing construction, but would facilitate future housing development. Future housing development facilitated by the HEU, which would occur as market conditions allow and at the discretio n of the individual property owners. However, the HEU would identify a series of implementing actions to increase the City’s housing capacity. As part of the HEU, additional housing units would be accommodated on the candidate housing sites that are ultima tely selected through revisions to the City’s Housing Element. Future housing development facilitated by the HEU is anticipated to increase the City’s housing stock where capacity exists.
Future housing development facilitated by the HEU may be subject to discretionary permits, including the City’s development review process, environmental review under CEQA, as well as, required to comply with applicable federal, state, and local laws and l ocal policies and regulations, as applicable to new housing develop ment. The HEU is subject to comply with applicable State Housing law. As such, the HEU would be consistent with applicable land use and planning policies in the state, regional, and local c ontext as necessary to meet that legislation.
This includes consistency with the General Plan. Future housing development facilitated by the HEU would therefore be consistent with all applicable land use and planning policies and Rialto 6th Cycle HEU
Initial Study/Mitigated Negative Declaration
regulations intended to mi nimize environmental effects. A less than significant impact would occur.
Standard Conditions and Requirements
None are applicable to the project.
Rialto 6th Cycle HEU
Initial Study/Mitigated Negative Declaration
MINERAL RESOURCES
ENVIRONMENTAL IMPACTS
Issues
Potentially
Significant
Impact
Less Than
Significant
With
Mitigation
Incorporated
Less Than
Significant
Impact
No
Impact
12. MINERAL RESOURCES. Would the project:
a) Result in the loss of availability of a known mineral resource that would be of value to the region and the
residents of the state?
X
b) Result in the loss of availability of a locally-important mineral resource recovery site delineated on a local
general plan, specific plan, or other land use plan?
X
12(a & b) Result in the loss of availability of a known mineral resource that would be of value to the region and the residents of the state? And result in the loss of availability of a locally-important mineral resource recovery site delineated on a local g eneral plan, specific plan, or other land use plan?
No Impact. The Project would not result in direct housing construction but would facilitate and provide a policy framework for future housing development throughout the City. As previously noted, future h ousing development facilitated by the HEU may be subject to discretionary permits, including the City’s development review process, environmental review under CEQA, as well as, required to comply with applicable federal, state, and local laws and local policies and regulations, as applicable to new housing development . Therefore, no direct physical environmental impact would occur as a result of the implementation of the Project.
Standard Conditions and Requirements
None are applicable to the project.
Rialto 6th Cycle HEU
Initial Study/Mitigated Negative Declaration
NOISE
ENVIRONMENTAL IMPACTS
Issues
Potentially
Significant
Impact
Less Than
Significant
With
Mitigation
Incorporated
Less Than
Significant
Impact
No
Impact
13. NOISE. Would the project result in:
a) Generation of a substantial temporary or permanent
increase in ambient noise levels in the vicinity of the project in excess of standards established in the local general plan or noise ordinance or applicable standards of other agencies?
X
b) Generation of excessive ground borne vibration or
ground borne noise levels?
X
c) For a project located within the vicinity of a private airstrip or an airport land use plan or, where such a plan has not been adopted, within two miles of a public airport or public use airport, would the project expose people
residing or working in the project area to excessive noise levels?
X
13(a) Generation of a substantial temporary or permanent increase in ambient noise levels in the vicinity of the project in excess of standards established in the local general plan or noise ordinance or applicable standards of other agencies? Less Than Significant Impact.
Construction Noise . The project would not result in dire ct housing construction but would facilitate and provide a policy framework for future housing development throughout the City.
Future housing development facilitated by the HEU would result in construction noise generated from development activities.
In general, construction would typically involve the following construction sequences: (1) site preparation and/or demolition; (2) grading and utilities construction; (3) building construction; (4) paving; and (5) architectural coatings. Typical constructi on equipment would include backhoes, excavators, graders, loaders, compactors, cranes, trucks, pavers, pneumatic tools, generator sets, and air compressors. With the exception to pile -driving activities, construction equipment with substantially higher noi se-generation characteristics (such as rock drills and blasting equipment) would not be anticipated for construction of typical residential developments. Typical construction equipment generates maximum noise levels at 50 feet from the noise source ranging between 80 dBA for backhoes and loading trucks, to 85 -90 dBA for graders and excavators, as shown in Table 13-1, Maximum Noise Levels Generated by Construction Equipment below.
Rialto 6th Cycle HEU
Initial Study/Mitigated Negative Declaration
Table 13-1: Maximum Noise Levels Generated by Construction Equipment Equipment Acoustical Use Factor Lmax at 50 Feet (dBA) Lmax at 100 Feet (dBA) Concrete Saw 20 90 84
Crane 16 81 75
Concrete Mixer Truck 40 79 73
Backhoe 40 78 72
Dozer 40 82 76
Excavator 40 81 75
Forklift 40 78 72
Paver 50 77 71
Roller 20 80 74
Tractor 40 84 78
Water Truck 40 80 74
Grader 40 85 79
General Industrial Equipment 50 85 79
Notes:
1. dBA: A-weighted decibels; Lmax: maximum noise level.
2. The Acoustical Use Factor (percent) estimates the fraction of time each piece of construction equipment is operating at full power (i.e., its loudest condition) during a construction operation.
Source: Federal Transit Administration, Transit Noise and Vibration Impact Assessment Manual, 2020.
In general, construction noise can vary substantially from day to da y, depending on the level of activity and the specific type of equipment in operation. Additionally, construction activities associated with future housing development facilitated by the H EU is anticipated to occur in incremental phases over time based on market demand, economic, and planning considerations.
As a result, construction -related noise would not be concentrated in any one particular area of the City.
All future housing developm ent facilitated by the HEU would be subject to the City’s development review process, which may include review pursuant to CEQA, and be required to comply with GP policies and the Rialto MC Chapter 9.50 (Noise Control) . Construction associated with future housing development facilitated by the HEU would be required to com ply with the Rialto MC §9.50.070 (Disturbances from construction activity). The Rialto MC limits construction activities to Monday through Friday, 7:00 a.m. to 5:30 p.m., and Saturday 8:00 a.m. to 5:00 p.m. from October 1 st through April 30 th and Monday th rough Friday, 6:00 a.m. to 7:00 p.m., and Saturday 8:00 a.m. to 5:00 p.m. from May 1 st through September 30 th, with no construction allowed on Sundays or State holidays. For some future housing developments, such as those near sensitive noise receptors, th e City may choose to require conditions of approval to include measures under its Design Review process such as temporary sound barriers and shielding to reduce potential noise impacts on sensitive receptors. For example, acoustically designed enclosures and buildings can provide up to approximately 50 dBA of noise reduction, depending on the noise abatement treatments implemented.
Rialto 6th Cycle HEU
Initial Study/Mitigated Negative Declaration
Operations Noise. The project would not result in direct housing construction but would facilitate future housing development throughout the City. Future housing development facilitated by the HEU would result in additional housing, people, pets, and automobiles in the City. Noise would be generated by stationary operation-related sources, such as heating, ventilation, and air conditioning (HVAC) units, tankless water heaters, generators, lawn maintenance equipment, and swimming pool pumps. All future housing development facilitated by the HEU would be subject to development review process that may include environmental review , pu rsuant to CEQA and be required to demonstrate compliance with Rialto MC Chapter 9.50 (Noise Control) and Rialto MC §18.66 (Conditional Development Permits).
Noise is also likely to occur from line sources, such as motor vehicle traffic. Future housing development facilitated by the HEU would result in increased traffic volumes on local city roadways, thereby increasing cumulative noise levels. Given the City’s largely developed nature, new housing development would not be expected to significantly increase traffic volume on local roadways. Additional average daily trips (ADT) from future housing development facilitated by the HEU would need to more than double current ADT for there to be a discernable difference in noise levels (i.e. , more than 3 dBA increa se). Furthermore, most of the identified opportunity areas are within previously developed portions of the City already generating traffic volumes and mobile noises. All future housing dev elopment facilitated by the HEU would be subject to the City’s development review process, which may include review pursuant to CEQA, and be required to comply with GP policies and the Rialto MC §18.66, which requires project noise compatibility with adjacent land uses. Following compliance with Rialto MC Chapter 9.50, the project’s future construction and operations related noise impacts would be less than significant. 13(b) Generation of excessive ground borne vibration or ground borne noise levels? Less Than Significant Impact. The project would not result in direct ho using construction but would facilitate future housing development throughout the City. Construction activities associated with future housing development facilitated by the HEU could resu lt in varying degrees of groundborne vibration impacts from heavy equipment operations, depending on the construction procedure and equipment used. Construction equipment operations would generate vibrations that spread through the ground and diminish in amplitude with distance from the source. The effect on buildings located near a construction site often varies depending on soil type, ground strata, and construction characteristics of the receiver building(s). Groundborne vibrations from construction activities rarely reach levels that damage structures.
The Federal Tran sit Administration (FTA) has published standard vibration velocities for construction equipment operations. In general, the FTA architectural damage criterion for continuous vibrations (i. e., 0.2 in/sec) appears to be conservative. The types of constructio n vibration impacts include human annoyance and building damage. Human annoyance occurs when construction vibration rises significantly above the threshold of human perception for Rialto 6th Cycle HEU
Initial Study/Mitigated Negative Declaration
extended periods of time. Building damage can be cosmetic or structural. Ordinary buildings that are not particularly fragile would not experience any cosmetic damage (e.g., plaster cracks) at distances beyond 30 feet. This distance can vary substantially depending on the soil composition and underground geological layer between v ibration source and receiver. In addition, not all buildings respond similarly to vibration generated by construction equipment. For example, for a building that is constructed with reinfo rced concrete with no plaster, the FTA guidelines show that a vibrat ion level of up to 0.20 in/sec is considered safe and would not result in any construction vibration damage.
Ground-borne vibration generated by construction equipment spreads through the ground and diminishes in magnitude with increases in distance. Based on FTA data, vibration velocities from typical heavy construction equipment operations that would be used during Project construction range from 0.003 to 0.089 in/sec PPV at 25 feet from the source of activity.
As previously discussed, the Project does not include physical alterations to the City. If proposed buildout were to occur, the additional allowable residential density at the candidate housing sites would remain within the expected population growth of the City and Region (See Section 14:
Population and Housing. The increase in density is not anticipated to change the overall impact of growth in the City compared to what was assumed in the Rialto GP and SCAG’s Connect SoCal RTP/SCS. Any future development within the candidate housing sites would be subject to the City’s standard discretionary review process, including compliance with the City’s GP, compliance with the municipal code, and site -specific CEQA review. Therefo re, impacts are less than significant.
13(c) For a project located within the v icinity of a private airstrip or an airport land use plan or, where such a plan has not been adopted, within two miles of a public airport or public use airport, would the proj ect expose people residing or working in the project area to excessive noise levels?
No Impact. Currently, there are no airports within the City of Rialto. The Housing Element Update would not contain policies that would conflict with airport land use plan s nor would it promote development near any airports. The closest airport is the San Bernardino International Airport which is greater than two (2) miles away. Therefore, no impact related to exposing people to excessive as a result of airport land use would occur.
Standard Conditions and Requirements
None are applicable to the project.
Rialto 6th Cycle HEU
Initial Study/Mitigated Negative Declaration
POPULATION AND HOUSING
ENVIRONMENTAL IMPACTS
Issues
Potentially
Significant
Impact
Less Than
Significant
With
Mitigation
Incorporated
Less Than
Significant
Impact
No
Impact
14. POPULATION AND HOUSING. Would the project:
a) Induce substantial unplanned population growth in an area, either directly (for example, by proposing new
homes and businesses) or indirectly (for example,
through extension of roads or other infrastructure)?
X
b) Displace substantial numbers of existing people or
housing, necessitating the construction of replacement
housing elsewhere?
X
14(a) Induce substantial unplanned population growth in an area, either directly (for example, by proposing new homes and businesses) or indirectly (for example, through extension of roads or other infrastructure)?
Less Than Significant Impact. The project would not result in direct housing construction but would facilitate and provide a policy framework for future housing development on candidate housing sites throughout the City . To meet the City’s RHNA allocation of 8,272 units, the HEU identifies a series of implementing actions to increase the City’s housing capacity that would induce some population growth in the City. As shown in Table 2 -7, the City’s total potential housing development capacity is approximately 16,368 housing units. As also shown in Table 2-7, 387 housing units would be provided through already constructed/issued permit units, and a total of 10, 381 housing units would be provided through existing zoning, which includes 128 Accessory Dwelling Unit (ADU) units, 5th Cycle units ( 62 units), uni ts within entitled private specific plans (7,539 units), and units within seven opportunity areas under existing zoning (2,652 units). Of these 10,768 housing units, all except the 128 ADU would be considered planned housing development. A total potential development capacity of approximately 5,600 units would be provided within seven opportunity areas with rezone/upzone programs. Considering these 5,600 units and the 128 ADU, the project would result in approximately 5,728 new housing units not previously planned for (i.e., not within entitled private specific plans or existing zoning).
As a component of Statewide housing legislation, any housing growth an d population growth associated with the Project would be in accordance with State -level regulation and would therefore not be considered unplanned. Additionally, future housing development facilitated by the HEU would occur in urbanized locations near existing utilities and service systems, and areas already served by public services (e.g., police and fire protection, and other emergency responders).
Rialto 6th Cycle HEU
Initial Study/Mitigated Negative Declaration
Table 14-1, Population Increase from Housing Element below summarizes the projected population growth associ ated with the project’s ma ximum forecast development capacity of 16,368 housing units.
Table 14-1: Population Increase from Housing Element
Definition 6th Cycle Housing
Element
Maximum Potential Candidate Housing Units 16,368
Potential Candidate Housing Units through Existing Zoning, excluding ADU -10,640 New Housing Units Not Previously Planned For 5,728
Persons per household (American Community Survey, 5-Year Estimates, 2019) 3.94 Forecasted Unplanned Population Growth with HEU – 2030 Horizon +22,568 Existing 2020 Population Estimate (See Table 2-1) 104,110 Existing 2020 Population with HEU – 2030 Horizon 126,678 Forecast Unplanned Population Growth with HEU Percentage +21.7% SCAG Forecast 2040 Population for City 112,000
Forecast 2030 Population for City – Extrapolated (based on constant growth rate 2020-2040) 108,055
Forecast 2030 Population for City – Extrapolated with HEU 130,623 Forecast 2030 Population for City – Extrapolated with HEU Percentage +21%
As shown in Table 14-1, future development facilitated by the Project would therefore enable the development of a total of 5,728 unplanned housing units within the City, which would generate population growth of approximately 22,568 persons. When combined with the 2020 total population of 104,110 persons, as shown in Table 2-1, the City would potentially grow to a total unplanned population of approximately 126,678 during this HEU planning period. This would create an approximate 21.7 percent increase in the 2020 population.
Without implementation of the Project, the City is anticipated to experience a p opulation increase of approximately 7.6 percent to a population of 112,000 by 2040, as shown in Table 2-1.
The HEU would result in a significant impact if it would “induce substantial unplanned population growth in an area.” The potential increase of 21.7 percent in population forecasts, resulting from the implementation of the HE U, could be considered substantial. However, the growth would occur over an extended period (i.e., 2021 through 2029). Many of the candidate hou sing units are located within existing zoning, including the entitled Lytle Creek Ranch and Renaissance Specific Plans (sites designated for moderate and above moderate income housing) and opportunity areas. Future housing development facilitated by the HE U is intended to be dispersed throughout the community in areas suited for residential development.
It is noted that the Project would facilitate development of affordable housing units, in accordance with State law. The increase in affordable housing uni ts would provide housing opportunities in proximity to jobs for those employed within the City that meet these household Rialto 6th Cycle HEU
Initial Study/Mitigated Negative Declaration
income categories, including those working in local retail/commercial service businesses, hotels, caregivers, property caretakers, and public occupations. Therefore, job availability would not be readily affected by the implementation of the Project and would not lead to unexpected population growth.
Future housing development would be subject to development review process and be assessed on a case-by-case basis for potential effects concerning population growth. Additionally, future housing development would be subject to compliance with all Federal, State, and local requirements for minimizing growth-related impacts. Local requirements include those stated in the Rialto GP and Rialto MC.
As discussed throughout this IS/MND, All future housing developments facilitated by the HEU would be subject to the City’s development review process, which may include review pursuant to CEQA, and requi red to comply with GP policies and the Rialto MC. Future housing developments would be assessed on a project -by-project basis for potential effects concerning population growth. Additionally, future housing development would be subject to compliance with all federal, state, and local requirements for minimizing growth-related impacts. Therefore, the HEU would not induce substantial unplanned population growth in the City directly or indirectly, a less than significant impact would occur. 14(b) Displace sub stantial numbers of existing people or housing, necessitating the construction of replacement housing elsewhere?
Less Than Significant Impact. Senate Bill (SB) 166 (2017) requires a City or County to maintain an inventory at all times that can accommodate its share of the regional housing need throughout the planning period. It prohibits a City or County from reducing, requiring, or permitting the reduction of the residential density to a lower residential density than what was utilized by the HCD for certi fication of the Housing Element, unless the City or County makes written findings supported b y substantial evidence that the reduction is consistent with the adopted General Plan, including the Housing Element.
Compliance with SB 166 would minimize the pot ential for future housing displacement. The candidate housing site inventory would be sufficient to accommodate the City’s RHNA allocation, and all HEU actions would occur such that there is no net loss of residential unit capacity.
Therefore, the HEU’s po tential impacts, including from future development facilitated by the HEU, concerning displacement of existing people or housing, and need to construct replacement housing elsewhere would be less than significant.
Standard Conditions and Requirements
None are applicable to the project.
Rialto 6th Cycle HEU
Initial Study/Mitigated Negative Declaration
PUBLIC SERVICES
ENVIRONMENTAL IMPACTS
Issues
Potentially
Significant
Impact
Less Than
Significant
With
Mitigation
Incorporated
Less Than
Significant
Impact
No
Impact
15. PUBLIC SERVICES. Would the project result i n substantial adverse physical impacts associated with the provision of new or physically altered governmental facilities or need for new or physical altered governmental facilities, the construction of which could cause significant environmental impacts, in order to maintain acceptable service ratios, response times, or other performance objectives for any of the public services:
a) Fire protection? X
b) Police protection? X
c) Schools? X
d) Parks? X
e) Other public facilities? X
15(a) Fire Protection?
Less Than Significant Impact. Fire protection services in the City are provided by the Rialto Fire Department. The Project would not result in direct housing construction but would facilitate and provide a policy framework for future housing development on candidate housing sites throughout the City. Future development facilitated by the Project would increase demand for fire protection services over time. Although the vacant state of some of the identified opportunity areas would incrementally increase the demand for fire protection services to those vacant areas, the proposed vacant sites are in urbanized locations near existing infrastructure (e.g., roads and utilities) and would be located near areas already served by the Rialto Fire Department. Potential impacts would include plac ing greater demands upon fire stations, personnel, and equipment over time, potentially resulting in the need to provide new or expanded facilities in order to maintain acceptable service ratios. The Rialt o Fire Department would continue to provide services to the future housing developments facilitated by the Project.
The Project does not propose new or physically altered fire protection facilities, the construction of which could cause significant environ mental impacts. No impact would occur in this rega rd.
Any future expansion of existing fire protection facilities, if required, would be subject to environmental review under CEQA requirements.
All future housing development facilitated by the HEU would be subject to the City’s development review process, which may include review pursuant to CEQA, and be required to comply with GP policies and required to adhere to the 2019 California Fire Code and the Rialto MC §15.28 (Fire Code). Future projects would also be subject to impact fees and tax revenue would be generated from their development. These sources of revenue would support public Rialto 6th Cycle HEU
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goods, like fire protection services, to continue and improve. Future projects would also incorporate fire preventative designs and would provide access for emergency services. 15(b) Police Protection?
Less Than Significant Impact . Police protection services in the City are provided by the Rialto Police Department. The Project would not result in direct housing constructio n but would facilitate and provide a policy framework for future housing development on candidate housing sites throughout the City. Future development facilitated by the Project would increase demand for police protection services over time. Although the vacant state of some of the identified opportunity areas would incrementally increase the demand for police protection services to those vacant areas, the proposed vacant sites are in urbanized locations near existing infrastructure (e.g., roads and utilit ies) and would be located near areas already served by the Rialto Police Department. Potential impacts would include placing greater demands upon police stations, personnel, and equipment over time, potentially resulting in the need to provide new or expanded facilities in order to maintain acceptable service ratios. The Rialto Police Department would continue to provide services to the future housing developments facilitated by the Project.
The Project does not propose new or physically altered police depa rtment facilities, the construction of which could cause significant environmental impacts. No impact would occur in this regard. Any future expansion of existing police department facilities, if required, would be subject to environmental review under CEQA requirements.
All future housing development facilitated by the HEU would be subject to environmental review under CEQA and the City’s development review process. Future projects would also be subject to development impact fees and tax revenue would be generated from their development. These sources of revenue would support public goods, like police protection services, to continue and improve.
15(c) Schools?
Less Than Significant Impact. The Project would facilitate and provide a policy framework for future housing development on candidate housing sites throughout the City, which are situated in urbanized areas . The Project would result in approximately 5,728 new housing units not previously planned for (i.e., not within entitled private specific plan s or existing zo ning). Future housing development facilitated by the HEU and the resulting population growth would generate student population growth in Rialto Unified School District (RUSD). The student population growth would increase the demand for school services and facilities over time. Potential impacts would include placing greater demands upon existing facilities and personnel, potentially resulting in the need to provide new or expanded facilities, in order to maintain acceptable service ratios.
Rialto 6th Cycle HEU
Initial Study/Mitigated Negative Declaration
The Project does not propose construction of new or physically altered school facilities.
Therefore, the Project would not result in substantial environmental impacts in this regard.
Future development could warrant construction of new or physically alter ed school facili ties depending upon its nature and timing. Any future expansion of existing school facilities or construction of new, if required, would be subject to environmental review under CEQA requirements.
Additionally, legislation allows school d istricts to coll ect impact fees from developers of new residential uses. Pursuant to Government Code §65996, school fees imposed through the Education Code are deemed to be full mitigation for new development projects; the City cannot impose additional mi tigation. School impact fees would be imposed on future development within the RUSD. Thus, compliance with the established regulatory framework, which requires payment of school impact fees, would offset the cost of providing service for any additional students generated by the Project. The impacts on school services would be fully mitigated and less than significant.
15(d) Parks?
Less Than Significant Impact. Please refer to Section 16: Recreation below. 15(e) Other public facilities?
Less Than Signifi cant Impact. The Project would facilitate and provide a policy framework for future housing development on candidate housing sites throughout the City, which are situated in urbanized areas. The Project would result in approximately 5,728 new housing units not previously planned for (i.e., not within entitled private specific plans or existing zoning). Future housing development facilitated by the HEU and the resulting population growth would increase the demand on public facilities. The population growth w ould increase th e demand for public services and facilities over time. Potential impacts would include placing greater demands upon existing facilities and personnel, potentially resulting in the need to provide new or expanded facilities, in order to maintain acceptable service ratios.
The Project does not propose construction of new or physically altered public facilities.
Therefore, the Project would not result in substantial environmental impacts in this regard.
Future development could warrant cons truction of new facilities or physically altered existing facilities depending upon its nature and timing. Any future expansion of existing facilities or construction of new, if required, would be subject to environmental review under CEQA requirements. Demand would be a t least partially offset by funding generated by development fees and by tax revenue of higher numbers of residents. Therefore, impacts on public facilities would be less than significant.
Standard Conditions and Requirements
None are applicable to the project.
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Initial Study/Mitigated Negative Declaration
RECREATION
ENVIRONMENTAL IMPACTS
Issues
Potentially
Significant
Impact
Less Than
Significant
With
Mitigation
Incorporated
Less Than
Significant
Impact
No
Impact
16. RECREATION. Would the project:
a) Increase the use of existing neighborhood and regional parks or other recreational facilities such that substantial physical deterioration of the facility would occur or be accelerated?
X
b) Include recreational facilities or require the construction or expansion of recre ational facilities which might have an adverse physical effect on the environment?
X
16(a) Increase the use of existing neighborhood and regional parks or other recreational facilities such that substantial physical deterioration of the facility would occur or be accelerated?
Less Than Significant Impact. The Project would facilitate and provide a policy framework for future housing development on candidate housing sites throughout the City, which are situated in urbanized areas. Future residential pro jects could increase the use of existing neighborhood and regional parks. However, it is possible that future developments would include the construction of additional recreational facilities and developer-produced parks, but it is presently unknown until future housing projects are proposed. Future development facilitated by the Project would be required to pay development impact fees and any tax revenue generated will benefit the funding for parks and facilities to offset potential increases in demand.
The City of Rialto offers various recreational parks and facilities. Rialto has mini-park/pocket park, neighborhood parks, community parks , planned parks, recreational centers, and school open space. Glen Helen Regional Park is within Rialto’s Sphere of Influence in San Bernardino County’s Devore area. As of Rialto’s 2010 General Plan, Rialto has a total of 134 parks, excluding 6 community centers. Rialto has a moderate park shortage, and it has a standard ratio of 3 acres of parks per 1,000 residents. This ratio is used for park dedication and fee requirements. The built-out nature of Rialto’s environment makes it challenging to find opportunities for more recreational facilities. According to the recommendations from the N ational Recreation and Parks Association (NRPA), a park should cover a ¼ to ½ mile service area radius. Rialto satisfies this recommendation in most cases, except for the western boundary and parts of Bloomington.27
27 City of Rialto. Rialto General Plan. 2010. Available at https://www.yourrialto.com/DocumentCenter/View/1494/2010-General-Plan. Accessed on August 25, 2021).
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Additionally, the HEU’s candidate housi ng sites are dispersed throughout th e community to minimize the potential for adverse changes in the neighborhood character and reduce the potential for adverse impacts on recreation amenities. Adherence to mandatory development permit requirements and regulations for providing recreation would support the City’s goals for providing sufficient recreation opportunities for residents. For these reasons, the HEU and future housing development facilitated by the HEU would not result in substantial physical deterioration of existing neighborhood or regional parks. Therefore, impacts would be less than significant. 16(b) Include recreational facilities or require the construction or expansion of recreational facilities which might have an adverse physical effect on the environment? Less Than Signif icant Impact. See answer 16(a) above. Future development would increase demand for parks and recreational facilities over time. Potential impacts would include placing greater demands on parkland and recreational facilities, potentially resulting in the ne ed to provide new or expanded facilities in order to maintain an acceptable level of service. The Project does not propose construction of new or physically altered parks or recreational facilities.
Therefore, the Project would not result in substantial e nvironmental i mpacts in this regard.
Future development could warrant construction of new or physically altered parks or recreational facilities depending upon its nature and timing. Any future expansion of existing facilities or construction of new facilities, if required, would be subject to environmental review under CEQA requirements and comply with any applicable development review actions related to the expansion of recreational facilities.
Standard Conditions and Requirements
None are applicable to the project.
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TRANSPORTATION
ENVIRONMENTAL IMPACTS
Issues
Potentially
Significant
Impact
Less Than
Significant
With
Mitigation
Incorporated
Less Than
Significant
Impact
No
Impact
17. TRANSPORTATION. Would the project:
a) Conflict with a progr am, plan, ordinance or policy
addressing the circulation system, including transit,
roadways, bicycle and pedestrian facilities?
X
b) Conflict or be inconsistent with CEQA Guidelines Section 15064.4, subdivision (b)?
X
c) Substantially increase ha zards due to a geometric design feature (e.g., sharp curves or dangerous intersections) or incompatible uses (e.g., farm equipment)?
X
d) Result in inadequate emergency access? X
17(a) Conflict with a program plan, ordinance or policy addressing th e circulation system, including transit, roadway, bicycle and pedestrian facilities? Less Than Significant Impact. The project would not result in direct housing construction but would facilitate and provid e a policy framework for future housing developme nt on candidate housing sites throughout the City. The HEU does not include any goals, policies, or implementation programs that would conflict with plans or other regulations that address the circulation system. Future development projects would be review ed on a case -by-case basis to verify consistency with applicable regulations that address the circulation system.
Bus services are provided to the City via Omnitrans, a public agency that provides services to the greater San Bernardino Valley. Metrolink is a southern California agency which provides passenger rail services to the region’s cities. The Project would not conflict with the service capacity of these transportation providers, since candidate housin g sites are dispersed throughout the City. The Ci ty also contains a contiguous bicycle lane system that allows bicycle access throughout the City.
All future housing development facilitated by the HEU would be subject to the City’s development review proce ss, which may include review pursuant to CEQA, an d be required to comply with GP policies, Rialto MC standards, and relevant policies/standards concerning public transit and pedestrian facilities. This includes policies and regulations required to improve public access and safety for people who walk and bike, and improve the transportation system, as applicable. Future housing development on the candidate housing sites would be required to adhere to all state requirements for consistency with transportation plans.
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The City’s review process would examine project compatibilities with the surrounding areas.
Conditions of approvals may include requirements for street improvements and dedications and traffic circulation. As a result, future housing development on the can didate housing sites facilitated by the HEU would not conflict with an adopted program, plan, ordinance, or policy addressing the circulation system, including transit, roadway, bicycle and pedestrian facilities.
Therefore, impacts would be less than significant.
17(b) Would the project conflic t or be inconsistent with CEQA Guidelines section 15064.3, subdivision (b)?
Less Than Significant Impact. The project would not result in direct housing construction but would facilitate and provide a policy framework for future housing development throughout the City. The Project would facilitate and provide a policy framework for future housing development on candidate housing sites throughout the City , which are situated in urbanized areas . The candidate housing sites are dispersed throughout the City to reduce the potential for adverse environmental impacts. The intent is to reduce impacts by placing housin g near public transportation and recreation opportunities and away from environmentally sensitive resources.
For example, the Foothill Boulevard oppor tunity area is along a major arterial roadway. Future development projects would be reviewed on a case -by-case basis to verify consistency with application regulations that address the circulation system, including Vehicle Miles Travelled (VMT).
All future housing development facilitated by the HEU would be required to adhere to all State and local requiremen ts for avoiding significant impacts related to VMT. Future development would be subject to compliance with the City’s VMT guidelines. Any traffic dema nd measures required for mitigation would be required to comply with Rialto GP Goals 4.1 and 4.2, which encourage the maintenance of efficient roadway capacities and minimization of traffic hazards near residential uses.
Most candidate housing sites are wi thin urban and developed areas, and therefore future housing development on the candidate housing sites fa cilitated by the HEU would be expected to reduce VMT. Future housing development in some areas of the City would provide more housing closer to employment and commercial areas, further increasing opportunities to reduce VMT and increase the ease of walking, cycling, and using public transit. Therefore, impacts would be less than significant.
17(c) Substantially increase hazards due to a geometric design feature (e.g., sharp curves or dangerous intersections) or incompatible uses (e.g., farm equipment)? Less Than Significant Impact. The Project would facilitate and provide a policy framework for future housing development on candidate housing sites throug hout the City, which are situated in urbanized areas. Because future housing development facilitated by the HEU would occur on mostly developed properties, they would use existing roadways that are connected and adjacent Rialto 6th Cycle HEU
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to the existing transportation netw ork, hazards due to a geometric design feature or incompatible uses are not anticipated. All future housing development facilitated by the HEU would be subject to the City’s development review process, which may include review pursuant to CEQA, be required to comply with GP policies, Rialto MC standards, , and be evaluated at the project-level for its potential to increase hazards due to a geometric design feature and to verify compliance with City development requirements within the Rialto MC.
Future housing development facilitated by the HEU would be required to comply with applicable building and fire safety regulations required for the design of new housing and emergency access; and would be required to adhere to all State and local requirements for avoid ing construction and operations impacts related to d esign and incompatible uses. As a result, future housing development facilitated by the HEU would not substantially increase hazards due to design features or incompatible uses. Therefore, impacts would be less than significant. 17(d) Result in inadequate emergency access?
Less Than Significant Impact . The Project would facilitate and provide a policy framework for future housing development on candidate housing sites throughout the City, which are situated in urbanized areas. Because future housing development facilitated by the HEU would occur on mostly developed properties, it is not anticipated that future housing development would result in inadequate emergency access. Additionally, all future housing development facilitated by the HEU would be s ubject to the City’s development review process and required to demonstrate consistency with the Rialto GP and Rialto MC.
The City has adopted the California Fire Code (CFC) under Rialto MC §15.28. The CFC sets standards for road dimension, design, grades , and other fire safety features. Additionally, more stringent CBC standards also apply regarding new construction and development of emergency access issues associated with earthquakes, flooding, climate/strong winds, and water shortages.
Future housing development would be required to comply with applicable building and fire safety regulations required for the design of new housing and emergency access. Thus, compliance with the Rialto MC would be required to p rovide adequate access, including emergency a ccess. As a result, future housing development facilitated by the HEU would not result in inadequate emergency access. Therefore, impacts would be less than significant.
Standard Conditions and Requirements
None are applicable to the project.
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TRIBAL CULTURAL RESOURCES
ENVIRONMENTAL IMPACTS
Issues
Potentially
Significant
Impact
Less Than
Significant
With
Mitigation
Incorporated
Less Than
Significant
Impact
No
Impact
18. TRIBAL CULTURAL RESOURCES. 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 de fined in terms of the size and s cope of the landscape, sacred place, or object with cultural value to a California Native American tribe, and that is:
i) Listed or eligible for listing in the California Register of Historical Resources, or in a local regi ster of historical resources as defined in Public Resources Code section
5020.1(k), or
X
ii) 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.
X
18(a) Would the project cause a subs tantial 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:
i. 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)? ii. 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?
Less Than Significant with Mitigation Incorporated. Pursuant to Government Code §21080.3.2(b) and §21074(a)(1)(A) -(B) (AB 52] the City has provided formal notification to California Native American tribal representatives that have previously requested notification from the City regarding projects within the geographic area traditionally a nd culturally affiliated with tribe(s). Native American groups may have knowledge about cultural resources in the area and may have concerns about adverse effects from development on tribal cultural resources as defined in PRC §21074.
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On June 7, 2021, the City initiated tribal consultation with interested California Native American tribes consistent with Assembly Bill (AB) 52 and Senate Bill (SB) 18. Letters were mailed to the following tribes:
• Tongva Nation - San Gabriel Band of
Mission Indians
• Tongva Nation
• San Manuel Band of Mission Indians
• Morongo Band of Mission Indians
• Gabrieleno Band of Mission Indian -
Kizh Nation
• Torres-Martinez Desert Cahuilla Indians
• Soboba Band of Luiseno Indians
• Serrano Nation of Mission Indians
• Santa Rosa Band of Cahuilla Indians
• San Fernando Band of Mission Indians
• Ramona Band of Cahuilla
• Los Coyotes Band of Cahuilla and
Cupeño Indians
• Gabrielino-Tongva
• Cahuilla Band of Indians
• Cabazon Band
• Augustine Band
• Agua Caliente
On June 15, 2021, San Manuel Band of Mission Indians (SMBMI) contacted the City via e -mail requesting additional documents and a consultation. The City forwarded available Housing Element related documents to the SMBMI. The City and SMBMI also held a consultation call on August 16, 2021. The SMBMI requested inclusion of standard cultural resource mitigation measure language. Future housing development would be subject to compliance with MM TCR-1 and MM TCR-2 which require the SMBMI be contacted and provided any appurtenant documents for any pre -contact and/or post contact cultural resources discovery during construction of future housing developments. Following compliance with MM TCR-1 and MM TCR-2, the Project would not cause a substantial adverse c hange in the significance of a tribal cultural resource.
With mitigation, impacts would be less than significant.
Mitigation Measures:
MM TCR-1 The San Manuel Band of Mission Indians Cultural Resources Department (SMBMI) shall be contacted, as detailed in MM CUL -1 of any pre -contact and/or post - contact cultural resources discovered during future housing development, and be provided information regarding the nature of the find, so as to provide Tribal input with regards to significance and treatment. Should the find be deemed significant, as defined by CEQA (as amende d, 2015), a cultural resource Monitoring and Treatment Plan shall be created by the archaeologist, in coordination with the SMBMI, and all subsequent finds shall be subject to this Plan. This Plan shall allow for a monitor to be present that represents the SMBMI or the remainder of the future housing development, should either of the Consulting Tribes elect to place a monitor on-site.
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MM TCR-2 Any and all archaeological/cultural documents created as a part of the future housing development (isolate records, site records, survey reports, testing reports, etc.) shall be supplied to the future project-specific applicant, and the City for dissemination to SMBMI. The City and/or applicant shall, in good faith, consult with the Consulting Tribes throughout the life of the future housing project.
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UTILITIES AND SERVICE SYSTEMS
ENVIRONMENTAL IMPACTS
Issues
Potentially
Significant
Impact
Less Than
Significant
With
Mitigation
Incorporated
Less Than
Significant
Impact
No
Impact
19. UTILITIES AND SERVICE SYSTEMS. Would the project:
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?
X
b) Have sufficient water supplies available to serve the project and reasonably foreseeable future development
during normal, dry and multiple dry years?
X
c) Result in a determination by the wastewat er treatment provider which serves or may serve the project that it has adequate capacity to serve the project projected demand in addition to the provider’s existing commitments?
X
d) Generate solid waste in excess of State or local standards, or in e xcess of the capacity of local infrastructure, or otherwise impair the attainment of solid waste reduction goals?
X
e) Comply with federal, state, and local management and reduction statutes and regulations related to solid waste? X
19(a) Require o r result in the relocation or construction of new or expanded water, wastewater treatment, or storm water drainage, electric power, natural gas, or telecommunications facilities, the construction or relocation of which could cause significant environmental effects?
Less Than Significant Impact.
Water
In partnership with Veolia North America (VNA), Rialto Water Services (RWS) provides water services to approximately 100,000 people. The City is in agreement with Table Rock Capital (TRC) and the VNA to allow the City to retain all water rights and supply, ownership of water and wastewater systems, and maintain the rate -setting authority relevant to the facilities. VNA has control of delivering water and wastewater services, billing, customer service, and overs ight of improvements for upgrading facilities and improving supply and capacity.
The project would not result in direct housing construction but would facilitate and provide a policy framework for future housing development on candidate housing sites throu ghout the City. The Project would result in approximately 5,728 new housing units not previously planned Rialto 6th Cycle HEU
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for (i.e., not within entitled private specific plans or existing zoning). Based on its addition of 5,728 housing units, future development would result in additional water demands over existing conditions. However, future housing development facilitated by the HEU would be located in developed areas of the City where water infrastr ucture already exists. Further, most of the candidate housing sites are developed and include existing connections to the District’s system.
Accordingly, future housing development facilitated by the HEU is not anticipated to require or result in the relocation or construction of substantial new or expanded water facilities that could cause significant environmental effects. Notwithstanding, all future housing development facilitated by the HEU would be subject to the City’s development review process, whic h may include review pursuant to CEQA, and be required to adhere to GP policies and the Rialto MC standards. A less than significant impact would occur. Water supply is further discussed in impact discussion (b) below.
Wastewater
Future projects may be required to implement a Water Pollution Prevention Program (SWPP) to ensure that water quality is not degraded and so that storm water flowing from the site would not exceed wastewater treatment requirements. The Santa Ana Regional Water Quality Control Board (RWQCB) also has requirements in place for fee payment to offset infrast ructure costs.
Wastewater form future projects are to be processed by the Wastewater Treatment Plant (WTP) at 501 East Santa Ana Avenue, City of Rialto. The General Plan anticipate d upgrades to the collection system and the lift stations. These upgrades wo uld be coordinated through the RWS agreement with the VNA to ensure adequate treatment is available for future demand. The City is expected to be able to accommodate future project s. Impacts are less than significant.
Wastewater capacity is further discussed in impact (c) below.
Dry Utilities
As stated in Section 6: Energy, SCE provides electricity and SCG services gas utilities.
Telecommunications service is provided by multiple companies including AT&T and Spectrum.
The project would not result in direct housing construction but would facilitate future housing development throughout the City. The housing development facilitated by the HEU would increase the demands for dry utilities. However, the candidate housing sites are located in developed areas of th e City that are already served by electric power, natural gas, and telecommunications facilities. Further, most of the candidate housing sites are developed and connect to existing dry utility infrastructure. While future development facilitated by the HEU would increase population within the City and increase service dema nd, growth projections are consistent with regional and local plans used to guide infrastructure development. All future housing development facilitated by the HEU would be required to mee t the mandatory requirements under the City’s various programs aimed at ensuring adequate supplies and service infrastructure are available to serve the development. A less than significant impact would occur.
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19(b) Have sufficient water supplies available to serve the project and reasonably foreseeable future development during normal, dry and multiple dry years? Less Than Significant Impact . The Project would facilitate and provide a policy framework for future housing development on candidate housing sites throughout the City, which are situated in urbanized areas . The P roject would result in approximately 5,728 new housing units not previously planned for (i.e., not within entitled private specific plans or existing zoning). Based on its addition of 5,728 housing units and a population growth of approximately 22,568 persons, future development would result in additional water demands over existing conditions.
According to the 2015 San Bernardino Valley Regional Urban Water Management Plan (UWMP), the City’s 10-year average base daily per capita water usage rate is approximately 214 gallons per day (gpd). The Project would therefore generate an estimated demand of 4,829,552 gpd or approximately 5,410 acre-feet (AF) of water per year (AFY).28 During dry years, the City is able to source up to 5,000 AF of water from the San Bernardino Basin Area, 4,366 AF of water from the Rialto -Colton groundwater basin, and on average 3,000 AF of water from the Chino Basin. Total, this would supply the City with 9,066 AF of water from groundwater sources. As well, the City has access to an additional 7,500 AF of imported water, bringing the dry year total to 14,566 AF. Upon implementation, the Project could potentially consist of approximately 37 percent of the City’s dry ye ar water supply. This is similar to the expected population increase from Project implementation of over 37 percent.
It is noted that future development would occur incrementally through 2029, based on market conditions and other factors, such that existi ng water services are not overburdened by substantially increased demands at any given time. Future development satisfying certain criteria would require preparation of a Water Supply Assessment (WSA) in order to verify sufficient water supply is available to meet the development’s water demand. Future development would a lso be subject to compliance with GP Policies 2-29.1 through 2-29.3 concerning water conservation.
All future housing development facilitated by the HEU would be subject to the City’s development review process, which may include review pursuant to CEQA, and be required to comply with GP policies and the Rialto MC regulations. . A less than significant impact would occur.
Stormwater
Implementation of future projects will likely require the construction of storm drainages to tie into existing stormwater drainage facilities within existing rights-of-way. Water discharged from the respective sites is not anticipated to negatively affect off-site or downstream flows. See
28 Water Systems Consulting. (2006) 2015 San Bernardino Valley Regional Urban Water Management Plan. Pages 41-1 through 14-14.
Retrieved from https://wvwd.org/wp-content/uploads/2018/03/SBV_RUWMP_rev_with_appendices_1.pdf (accessed August 22, 2021) Rialto 6th Cycle HEU
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Hydrology and Water Quality Impact (a) for further discussion. Impacts are to be considered less than significant.
19(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 projected demand in addition to the provider’s existing commitments?
Less Than Significant Impact . The City is served by the Rialto Wastewater Treatment Plant (RWWTP). The RWWTP treats on average 7 million gallons a day (MGD) of wastewater. The RWWTP has a capacity of 11.7 MGD.
Future housing development under the HEU may be subject to discretionary permits and be required to adhere to all federal, state, and local requirements related to wastewater treatment during construction and operations, including the Cit y’s Sewer System guidelines ( Rialto MC §12.08) and required construction permits. Considering these requirements, and the available capacity discussed above, the project would not result in a determi nation by the wastewater treatment provider that it has i nadequate capacity to serve the project’s projected demand in addition to the provider’s existing commitments. No new significant expansions of infrastructure facilities are required, and impacts would be less than significant. 19(d) Generate solid waste i n 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?
Less Than Significant Impact. The City o f Rialto Waste Management Office oversees trash and recycling services provided by the Burrtec Waste Industries. Solid waste generated during construction activities typically includes demolition of existing on -site structures, vegetation clearing, and grading would generate solid waste. Such waste would be source separated on-site for reuse, recycling, or proper disposal. Bins for the various construction material waste types would typically be provided on-site by Burrtec Waste Industries, who would also transport waste materials to the proper facilities for dis posal. Future projects are expected to generate waste during construction and operation.
All future construction activities would be required to demonstrate compliance with federal, State, and local statutes and regulations for solid waste. Construction activities would be subject to compliance with the 50 percent diversion of solid waste requirement pursuant to the California Integrated Waste Management Act of 1989 (AB 939). In addition, constructio n activities would be required to comply with the most recent Green Building Code, which implements design and construction measures that act to reduce construction -related waste th rough material conservation measures and other construction-related efficiency measures.
Future development would involve a net increase of 5,728 DU over existing conditions. Thus, the Project would increase solid waste disposal demands over existing conditions. It is not expected that future projects would lead to inadequate landfill capacity at the Mid-Valley Sanitary Landfill, Rialto 6th Cycle HEU
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which has a daily capacity of 7,500 tons per day. The landfill has the capacity for 101.3 million cubic yards and has an operational life through 2033. Solid waste generated at future housing developments facilitated by the HEU would represent a nominal incre ase in disposal rates.
Existing landfill capacity would be sufficient to serve future development within the City.
Further, AB 341 requires Cities and Counties to implement recycling programs, reduc e refuse at the source, and compost waste to achieve the established 75 percent diversion of solid waste from landfills. Burrtec Waste Industries is the only franchised waste hauler authorized to provide trash and recycling. For future development, the Cit y, in conjunction with Burrtec Waste Industries, would perform outreach, education and monitoring pursuant to this regulation.
Future housing development facilitated by the HEU may be subject to discretionary permits and be required to adhere to all federal, state, and local requirements for solid waste reductio n and recycling. Considering these requirements, the HEU implementation would not generate solid waste in excess of State or local standards, or in excess of local inf rastructure’s capacity.
Therefore, impacts would be less than significant.
19(e) Comply w ith federal, state, and local management and reduction statutes and regulations related to solid waste?
Less Than Significant Impact. State, County, and local agencies with regulatory authority related to solid waste include the California Department of Re sources Recycling and Recovery (CalRecycle) and the City. Regulations specifically applicable to the proposed project include the California Integrated Waste Managemen t Act of 1989 (AB 939), §4.408 of the CalGreen Code, and SB 341, which requires multi‐fam ily residential development and commercial uses to implement recycling programs.
The Integrated Waste Management Act, which requires every City and County in the State to prepare a Source Reduction and Recycling Element (SRRE) to its Solid Waste Management Plan, identifies how each jurisdiction will meet the State’s mandatory waste diversion goal of 50 percent by and after the year 2000. The diversion goal has been increased to 75 percent by 2020 by SB 341.
The 2019 CalGreen Code §4.408 requires preparation of a Construction Waste Management Plan that outlines ways in which the contractor would recycle and/or salvage for reuse a minimum of 65 percent of the nonhazardous construction and demolition debris. As previously noted, the project would not result in direct housing construction, but would facilitate future housing development. During the construction phase of future housing development, projects would comply with the CalGreen Code through the recycling and reuse of at least 65 percent of the nonhazardous construction and demolition debris from the project site. No conflict with statutes and regulations related to solid waste would occur.
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Standard Conditions and Requirements
None are applicable to the project.
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WILDFIRE
ENVIRONMENTAL IMPACTS
Issues
Potentially
Significant
Impact
Less Than
Significant
With
Mitigation
Incorporated
Less Than
Significant
Impact
No
Impact
20. WILDFIRE. If located in or near state responsibility areas or lands classified as very high fire hazard severity zones, would the project:
a) Substantially impair an adopted emergency response
plan or emergency evacuation plan?
X
b) Due to slope, prevailing winds, and other factors,
exacerbate wildfire risks, and thereby expose project
occupants to, pollutant concentratio ns from wildlife or the uncontrolled spread of a wildfire?
X
c) Require the installation or maintenance of associated infrastructure (such as roads, fuel breaks, emergency
water resources, power lines or other utilities) that may exacerbate fire risk or that may result in temporary or ongoing impacts to the environment?
X
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?
X
20(a) Substantially impair an adopted emergency response plan or emergency evacuation plan?
Less Than Significant Impact. Undeveloped Areas are more likely to be high fire risk areas. Infill development will be proposed and prioritized through t he housing element. These areas are in developed areas which reduces risk for wildland fire in the wildland urban interface. It is unlikely that emergency services traveling from the city to undeveloped areas and edges of the city will be impeded by constr uction activities or increased traffic created as a result of residential development under the housing element.
The project would n ot result in direct housing construction but would facilitate and provide a policy framework for future housing development on candidate housing sites throughout the City. According to CalFire Fire Hazard Severity Zone Map 29, the candidate housing sites ar e not within a State responsibility area (SRA) or a Very High Fire Hazard Severity Zone (VHFHZ), except those in the LCRSP. Therefore, development facilitated by the Project could be in or near a SRA and/or lands classified VHFHSZ. However, Project implementation is not anticipated to impair an adopted emergency response plan or emergency evacuation plan. The potential to impai r an
29 California Department of Forestry and Fire Protection, California Fire Hazard Severity Zone Viewer Available at:
https://gis.data.ca.gov/datasets/789d5286736248f69c4515c04f58f414, Accessed February 5, 2021.
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adopted emergency response plan or emergency evacuation plan would be addressed on a project-by-project basis for individual pr ojects and conditions of approval and/or mitigation would be placed on proposed projects to address any potential impacts, c onsistent with GP policies. Additionally, future developments facilitated by the Project would be required to continue assessing pot ential fire risks associated with their individual developments. The established permitting process will assist future devel opers in further identifying any potential construction barriers or obstructions in the rights of way and paths for emergency access. Future developments may require the creation of a traffic control plan which will mitigate any concerns related to impeding emergency access.
Furthermore, future development facilitated by the HEU may be subject to discretionary permits and be required to meet the mandatory requirements related to the prevention of wildfire impacts. All future housing development would be required to comply with the CFC and CBC. As a result, HEU implementation would not substantially impair an adopted local or county -wide emergency response or evacuation plan. Therefore, impacts would be less than significant. 20(b) Due to slope, prevailing winds, and other factors, exacerbate wildfire risks, and thereby expose project occupants to, pollutant concentrations from a wildfir e or the uncontrolled spread of a wildfire?
Less Than Significant Impact. The Project would facilitate and provide a policy framework for future housing development on candidate housing sites throughout the City, which are situated in urbanized areas. To further minimize risk from wildfire, future development on the candidate housing sites in VHFHSZ are required to adhere to the 2019 California Fire Code, Title 24, Part 9, §304.1.2, which states the following:
• “Any person that owns, leases, controls, operates, or maintains any building or structure in, upon, or adjoining any mountainous area or forest-covered lands, brush covered lands, or grass-covered lands, or any land which is covered with flammable material, shall at all times do all of the following:”
▪ Maintain around and adjacent to such building or structure a firebreak made by removing and clearing away, for a distance of not less than 30 feet on each side thereof or to the property line, whichever is nearer, all flammable vegetation or other combustible growth. This section does not apply to single specimens of trees, ornamental shrubbery, or similar plants which are used as ground cover, if they do not form a means of rapidly transmitting fire from the native growth to any building or structure.
▪ Maintain around and adjacent to any such building or structure additional fire protection or firebreak made by removing all bush , flammable vegetation, or combustible growth which is located from 30 feet to 100 feet from such building or structure or to the property line, whichever is nearer, as may be required by the enforcing agency if he finds that, because of extra hazardous co nditions, a firebreak Rialto 6th Cycle HEU
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of only 30 feet around such building or structure is not sufficient to provide reasonable fire safety. Grass and other vegetation located more than 30 feet from such building or structure and less than 18 inches in height above the gr ound may be maintained where necessary to stabilize the soil and prevent erosion. ▪ Remove that portion of any tree wh ich extends within 10 feet of the outlet of any chimney or stovepipe.
▪ Cut and remove all dead or dying portions of trees located adjacent to or overhanging any building.
▪ Maintain the roof of any structure free of leaves, needles, or other dead vegetative growth.
▪ Provide and maintain at all times a screen over the outlet of every chimney or stovepipe that is attached to any fireplace, stove, or other device that burns any solid or liquid fuel. The screen shall be constructed of nonflammable material with openings of not more than 0.5 inch in size.
▪ Hazardous vegetation and fuels around all applicable buildings and structures shall be maintained in accordance with applicable regulations.30 Future development facilitated by the Project would be required to adhere to all applicable fire prevention requirements and regulations, including CFC requirements and would result in less than significant impacts.
20(c) Require the installation or maintenance of associated infrastructure (such as roads, fuel breaks, emergency water sources, power lines or other ut ilities) that may exacerbate fire risk or that may result in temporary or ongoing impacts to the environment? Less Than Significant Impact. The Project would facilitate and provide a policy framework for future housing development on candidate housing sites throughout the City, which are situated in urbanized areas. The need for installation and maintenan ce of new infrastructure (such as roads, fuel breaks, emergency water resources, power lines, or other utilities) would be evaluated as part of the development permit review process. It is anticipated that future housing development facilitated by the Proj ect would be served by the extension of existing utility infrastructure located primarily in existing rights -of-way, because of the predominately developed nature of the City. Through compliance with applicable development regulations in the case of future development, impacts are anticipated to be less than significant, and no mitigation is required.
30 California Office of Administrative Law (2019). 2019 California Fire Code, Title 24, Part 9, §304.1.2. Retrieved from https://codes.iccsafe.org/content/CFC2019P4/chapter-3-general-requirements. Accessed on August 25, 20201.
Rialto 6th Cycle HEU
Initial Study/Mitigated Negative Declaration
20(d) Expose people or structures to significant risks, i ncluding downslope or downstream flooding or landslides, as a result of runoff, post -fire slope insta bility, or drainage changes?
Less Than Significant Impact. The Project would facilitate and provide a policy framework for future housing development on candidate housing sites throughout the City, which are situated in urbanized areas. According to the California Geological Survey, the City does not contain any areas identified as having a s evere potential for landslides. 31 As well, as stated in Geology and Soils Impact (a)(iv), the Project candidate housing opportunity areas are relatively flat and not within an area susceptible to landslides. Adherence to State and City codes, and emergency and evacuation plans set by the City and the County of San Bernardino would prevent impacts to people or structures from risks, including downslope or downstream floodi ng or landslides, as a result of runoff, post-fire slope instability, or drainage changes. Therefore, impacts would be less than significant.
Standard Conditions and Requirements
None are applicable to the project.
31 California Geological Survey, Geologic Hazards Data and Maps Data Viewer. Available at https://maps.conservation.ca.gov/geologichazards/, Accessed on August 25, 2021.
Rialto 6th Cycle HEU
Initial Study/Mitigated Negative Declaration
MANDATORY FINDINGS OF SIGNIFICANCE
ENVIRONMENTAL IMPACTS
Issues
Potentially
Significant
Impact
Less Than
Significant
With
Mitigation
Incorporated
Less Than
Significant
Impact
No
Impact
21. MANDATORY FINDINGS OF SIGNIFICANCE. Does the project:
a) Have the potential to substantially degrade the quality of the environment, substantially reduce the habitat of a fish or wildlife species, cause a fish or wildlife population to drop below self-sustaining levels, threaten to eliminate a plant or animal co mmunity, 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?
X
b) Have impacts that are individually limited, but
cumulatively considerable? ("Cumulatively considerable" means that the incremental effects of a project are
considerable when viewed in connection with the effects of the past projects, the effects of other current projects, and the effects of probable future projects.)
X
c) Have environmental effects which will cause substantial adverse effects on human beings, either directly or
indirectly?
X
21(a) Have the potential to substantially degrade the quality of the environment, substantially reduce the habitat of a fish or wildlife species, ca use a fish or wildlife population to drop below self-sustaining levels, threaten to eliminate a plant or animal community, substantially reduce the number or rest rict the range of a rare or endangered plant or animal or eliminate important examples of the major periods of California history or prehistory?
Less Than Significant Impact. On the basis of the foregoing analysis, the proposed project does not have the potential to significantly degrade the quality of the environment, substantially reduce the habitat of a fish or wildlife species, cause a fish or wildlife population to drop be low self-sustaining levels, threaten or 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.
The project would not result in direct housing construction but would facilitate and provide a policy framework for future housing development on candidate housing sit es throughout the City. All future housing development facilitated by the HEU wou ld be subject to the City’s development review process and required to adhere to all federal, state, and local requirements.
The HEU would not result in any direct environment al impacts that would substantially degrade Rialto 6th Cycle HEU
Initial Study/Mitigated Negative Declaration
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. Impacts are less than significant.
21(b) Have impacts that are individually limited, but cumulatively considerable? ("Cumulatively considerable " means that the incremental effects of a project are considerable when viewed in connection with the effects of the past projects, the effects of other current projects, and the effects of probable future projects.) Less Than Significant Impact . State CEQ A Guidelines §15065(a)(3) defines “cumulatively considerable” as times when “the incremental effects of an individual project are significant when viewed in connection with the effects of past projects, the effects of other current projects, and the effects of probable future projects.” This document provides a programmatic analysis of the effects of the proposed HEU and the future housing development facilitated by its implementation.
The Project would facilitate and provide a policy framework for future housing development on candidate housing sites throughout the City , which are situated in urbanized areas . Future housing development facilitated by the HEU would occur as mar ket conditions allow and at the discretion of the individual property owners; be subject to the City’s development review process; be subject to environmental review under CEQA; and does not propose changes to current land use designations and zoning. Base d on these factors, and since all future housing development facilitated by the HEU would be subject to the City’s development review process, the project would not result in environmental effects, which are individually limited, but cumulatively considerable.
21(c) Does the project have environmental effects which will have substantial adverse effects on human beings, directly or indirectly?
Less Than Significant Impact. There are no known substantial adverse effects on human beings that would be caused by the proposed project. The Project would facilitate and provide a policy framework for future housing development on candidate housing sites throughout the City , which are situated in urbanized areas. The HEU provides capacity for future housing development consistent with State Housing law. The candidate housing sites are dispersed throughout the community to minimize the potential for adverse environmental impacts. The p rovision of additional housing in the City is intended to create adequate housing av ailability at all income levels. The creation of more economically and socially diversified housing choices is a goal of the HEU and is intended to provide new housing oppo rtunities for low -income households.
Implementation of the HEU would provide additio nal housing options for a variety of income levels, as allocated by RHNA.
Rialto 6th Cycle HEU
Initial Study/Mitigated Negative Declaration
4.0 REFERENCES
City of Rialto. 2010. General Plan.
-----. 2010. General Plan. Safety Element - Figure S-3. -----. 2010. General Plan. Figure S-5, Liquefaction Susceptibility. -----. 2010. General Plan. Figure S-6, Potential Subsidence Areas. -----. 2010. General Plan. Figure S-7, Slope Stability and Major Landslides, page 10-33. -----. 2010. General Plan. Figure S-8, Wind Hazards.
-----. 2010. General Plan. Figure S-9, Fire Hazard Areas, page 10-43. -----. 2010. General Plan. Figure U-2, Water Service Area Boundaries. -----. 2010. General Plan. San Bernardino International Airport Planning Boundaries – Figure LU4, page 2-47.
-----. 2010. General Plan. Figure NRC-1 – Potential Habitat for Sensitive Wildlife. -----. 2010. General Plan. Figure NRC-2 – Biological Resource Areas. -----. 2010. General Plan. Figure NRC-3, Mineral Resources, page 12-15. -----. 2010. General Plan. Figure U-1, Sewerage Service Area Boundaries. -----. 2010. General Plan. Figure U-2, Water Service Area Boundaries. -----. 2010. General Plan. Land Use Plan, page 2-4, 2-9 -----. 2012. Lytle Creek Ranch Specific Plan Draft Environmental Impact -----. 2010. General Plan Update Final Environmental Impact State Clearinghouse Number 200807110
California Department of Conservation, California Important Farmland Finder. https://maps.conservation.ca.gov/DLRP/CIFF/. , Accessed August 23, 2021.
California Department of Fish and Wildlife. California Natural Community Conservation Plans.
Available at https://nrm.dfg.ca.gov/FileHandler.ashx?DocumentID=68626&inline.
Accessed on August 24, 2021
California Department of Forestry and Fire Protection, California Fire Hazard Severity Zone Viewer Available at: https://gis.data.ca.gov/datasets/789d5286736248f69c4515c04f58f414.
Accessed February 5, 2021.
Rialto 6th Cycle HEU
Initial Study/Mitigated Negative Declaration
California Department of Housing and Community Development (HCD). Available at https://www.hcd.ca.gov/community-development/housing-element/index.shtml.
Accessed on August 10, 2021.
California Department of Transportation (Caltrans). (2021). California State Scenic Highway System Map. Retrieved from:
https://caltrans.maps.arcgis.com/apps/webappviewer/index.html?id=465dfd3d807c46c c8e8057116f1aacaa. Accessed August 12, 2021.
Southern California Association of Governments (SCAG). Connect SoCal (2020). Retrieved from https://scag.ca.gov/connect-socal. Accessed on August 25, 2021.
Southern California Association of Governments (SCAG). Retrieved from 2016-2040 RTP/SCS Final Growth Forecast by Jurisdiction. Accessed on August 18, 2021.
Southern California Association of Governments (SCAG). What is RHNA? Available at https://scag.ca.gov/rhna. Accessed on August 10, 2021.
United States Census Bureau. Quick Facts Rialto City, California. Retrieved from https://www.census.gov/quickfacts/rialtocitycalifornia Accessed on August 18, 2021.
1435 W. Rialto Avenue (Prologis) Project
Appendices Initial Study/Mitigated Negative Declaration
Appendix A
Inventory of Candidate Housing Sites
2021-2029 City of Rialto Housing Element – Appendix A: Candidate Housing Sites
CITY OF RIALTO 6TH CYCLE HOUSING ELEMENT UPDATE – CANDIDATE HOUSING SITES Multiple candidate sites were identified throughout the City which were found to be suitable to accommodate future developmen t in order to meet the City’s Regional Housing Needs Asse ssment (RHNA) allocation. These candidate sites are chosen based on their ability to accommodate very low, low, moderate, and above moderate income housing sites.
Table A-1: Sites Inventory by Opportunity Area
HEU ID APN Existing General Plan Land
Use Existing Zoning Size
(acres)
Existing
Units
5th
Cycle
Site
Vacancy
Density (DU/AC) Potential
Net Unit
Yield
Existing
Zone
Density
Rezoned/
Upzoned
Density
Opportunity Area 1: Foothill Boulevard Specific Plan
1 012758240 Specific Plan Foothill Boulevard Specific
Plan 0.52 0 Yes 1 unit 35 18
2 012836120 Specific Plan Foothill Boulevard Specific
Plan 1.15 0 Yes 13 35 40
3 012836123 Specific Plan Foothill Boulevard Specific
Plan 1.44 0 Yes 13 35 50
4 012806150 Specific Plan Foothill Boulevard Specific
Plan 5.26 0 No 30 35 184
5 012807129 Specific Plan Foothill Boulevard Specific
Plan 2.06 0 No 21 35 72
6 024316104 Specific Plan Foothill Boulevard Specific
Plan 0.73 0 No 1 unit 35 25
7 013006125 Specific Plan Foothill Boulevard Specific
Plan 4.12 0 No 30 35 144
8 013006118 Specific Plan Foothill Boulevard Specific
Plan 0.85 0 No 1 unit 35 29
9 013317123 Specific Plan Foothill Boulevard Specific
Plan 0.99 0 No 1 unit 35 34
2021-2029 City of Rialto Housing Element – Appendix A: Candidate Housing Sites
HEU ID APN Existing General Plan Land
Use Existing Zoning Size
(acres)
Existing
Units
5th
Cycle
Site
Vacancy
Density (DU/AC) Potential
Net Unit
Yield
Existing
Zone
Density
Rezoned/
Upzoned
Density
10 024316105 Specific Plan Foothill Boulevard Specific
Plan 1.65 0 No 13 35 57
11 013339107 Specific Plan Foothill Boulevard Specific
Plan 9.95 0 No 30 35 348
12 013001336 Specific Plan Foothill Boulevard Specific
Plan 0.51 0 Yes No 1 unit 35 17
13 013317125 Specific Plan Foothill Boulevard Specific
Plan 0.51 0 No 1 unit 35 17
14 012806143 Specific Plan Foothill Boulevard Specific
Plan 1.00 0 No 13 35 35
15 013317127 Specific Plan C-P 0.66 0 No 1 unit 35 22
16 012808144 Specific Plan Foothill Boulevard Specific
Plan 1.26 0 No 13 35 44
17 024316106 Specific Plan Foothill Boulevard Specific
Plan 0.72 0 No 1 unit 35 25
18 013001346 Specific Plan Foothill Boulevard Specific
Plan 1.38 0 No 13 35 48
19 013046101 Specific Plan Foothill Boulevard Specific
Plan 1.38 0 No 13 35 48
20 013006113 Specific Plan Foothill Boulevard Specific
Plan 0.83 0 No 1 unit 35 28
21 012857120 Specific Plan Foothill Boulevard Specific
Plan 1.86 0 No 13 35 65
22 012801145 Specific Plan Foothill Boulevard Specific
Plan 1.88 0 No 13 35 65
23 013006120 Specific Plan Foothill Boulevard Specific
Plan 2.00 0 No 13 35 69
2021-2029 City of Rialto Housing Element – Appendix A: Candidate Housing Sites
HEU ID APN Existing General Plan Land
Use Existing Zoning Size
(acres)
Existing
Units
5th
Cycle
Site
Vacancy
Density (DU/AC) Potential
Net Unit
Yield
Existing
Zone
Density
Rezoned/
Upzoned
Density
24 012806144 Specific Plan Foothill Boulevard Specific
Plan 2.43 0 No 21 35 85
25 013006123 Specific Plan Foothill Boulevard Specific
Plan 2.53 0 No 21 35 88
26 012806129 Specific Plan Foothill Boulevard Specific
Plan 4.05 0 No 30 35 141
27 012801137 Specific Plan Foothill Boulevard Specific
Plan 4.77 0 No 30 35 166
28 012759139 Specific Plan Foothill Boulevard Specific
Plan 8.04 0 No 30 35 281
29 013002136 Specific Plan Foothill Boulevard Specific
Plan 1.10 0 No 13 35 38
30 013003115 Specific Plan Foothill Boulevard Specific
Plan 1.16 0 No 13 35 40
31 012758239 Specific Plan Foothill Boulevard Specific
Plan 0.61 0 No 1 unit 35 21
32 012758229 Specific Plan Foothill Boulevard Specific
Plan 0.66 0 No 1 unit 35 23
33 012757237 Specific Plan Foothill Boulevard Specific
Plan 0.93 0 No 1 unit 35 32
34 012857119 Specific Plan Foothill Boulevard Specific
Plan 1.81 0 No 13 35 63
35 012760240 Specific Plan Foothill Boulevard Specific
Plan 0.86 0 No 1 unit 35 30
36 012757238 Specific Plan Foothill Boulevard Specific
Plan 0.54 0 No 1 unit 35 18
37 012757239 Specific Plan Foothill Boulevard Specific
Plan 1.80 0 No 13 35 63
2021-2029 City of Rialto Housing Element – Appendix A: Candidate Housing Sites
HEU ID APN Existing General Plan Land
Use Existing Zoning Size
(acres)
Existing
Units
5th
Cycle
Site
Vacancy
Density (DU/AC) Potential
Net Unit
Yield
Existing
Zone
Density
Rezoned/
Upzoned
Density
38 012857123 Specific Plan Foothill Boulevard Specific
Plan 0.91 0 No 1 unit 35 31
39 013046107 Specific Plan Foothill Boulevard Specific
Plan 0.53 0 No 1 unit 35 18
40 012801146 Specific Plan Foothill Boulevard Specific
Plan 2.95 0 No 21 35 103
41 012836116 Specific Plan Foothill Boulevard Specific
Plan 0.60 0 No 1 unit 35 20
42 013003102 Specific Plan Foothill Boulevard Specific
Plan 0.58 0 No 1 unit 35 20
43 013339108 Specific Plan Foothill Boulevard Specific
Plan 0.62 0 No 1 unit 35 21
44 012758220 Specific Plan Foothill Boulevard Specific
Plan 0.76 0 No 1 unit 35 26
45 012758231 Specific Plan Foothill Boulevard Specific
Plan 0.55 0 No 1 unit 35 19
46 012760241 Specific Plan Foothill Boulevard Specific
Plan 0.78 0 No 1 unit 35 27
47 012801142 Specific Plan Foothill Boulevard Specific
Plan 1.71 0 No 13 35 59
48 013041105 Specific Plan Foothill Boulevard Specific
Plan 0.77 0 No 1 unit 35 26
49 013046116 Specific Plan Foothill Boulevard Specific
Plan 2.11 0 No 21 35 73
50 013005128 Specific Plan Foothill Boulevard Specific
Plan 2.17 0 No 21 35 76
51 013005151 Specific Plan Foothill Boulevard Specific
Plan 2.07 0 No 21 35 72
2021-2029 City of Rialto Housing Element – Appendix A: Candidate Housing Sites
HEU ID APN Existing General Plan Land
Use Existing Zoning Size
(acres)
Existing
Units
5th
Cycle
Site
Vacancy
Density (DU/AC) Potential
Net Unit
Yield
Existing
Zone
Density
Rezoned/
Upzoned
Density
52 013315504 Specific Plan Foothill Boulevard Specific
Plan 0.64 0 No 1 unit 35 22
53 013315505 Specific Plan Foothill Boulevard Specific
Plan 0.51 0 No 1 unit 35 17
54 012759123 Specific Plan Foothill Boulevard Specific
Plan 0.52 0 No 1 unit 35 18
55 012801144 Specific Plan Foothill Boulevard Specific
Plan 0.55 0 No 1 unit 35 19
56 012758237 Specific Plan Foothill Boulevard Specific
Plan 0.56 0 No 1 unit 35 19
57 013315502 Specific Plan Foothill Boulevard Specific
Plan 0.59 0 No 1 unit 35 20
58 013006124 Specific Plan Foothill Boulevard Specific
Plan 0.61 0 No 1 unit 35 21
59 013315501 Specific Plan Foothill Boulevard Specific
Plan 0.63 0 No 1 unit 35 22
60 013316407 Specific Plan Foothill Boulevard Specific
Plan 0.65 0 No 1 unit 35 22
61 012758241 Specific Plan Foothill Boulevard Specific
Plan 0.66 0 No 1 unit 35 23
62 012836117 Specific Plan Foothill Boulevard Specific
Plan 0.69 0 No 1 unit 35 24
63 012801147 Specific Plan Foothill Boulevard Specific
Plan 0.77 0 No 1 unit 35 26
64 012857121 Specific Plan Foothill Boulevard Specific
Plan 0.79 0 No 1 unit 35 27
65 012857122 Specific Plan Foothill Boulevard Specific
Plan 0.84 0 No 1 unit 35 29
2021-2029 City of Rialto Housing Element – Appendix A: Candidate Housing Sites
HEU ID APN Existing General Plan Land
Use Existing Zoning Size
(acres)
Existing
Units
5th
Cycle
Site
Vacancy
Density (DU/AC) Potential
Net Unit
Yield
Existing
Zone
Density
Rezoned/
Upzoned
Density
66 013041106 Specific Plan Foothill Boulevard Specific
Plan 0.86 0 No 1 unit 35 30
67 013006121 Specific Plan Foothill Boulevard Specific
Plan 0.87 0 No 1 unit 35 30
68 012806146 Specific Plan Foothill Boulevard Specific
Plan 0.87 0 No 1 unit 35 30
69 013005149 Specific Plan Foothill Boulevard Specific
Plan 0.92 0 No 1 unit 35 32
70 012806142 Specific Plan Foothill Boulevard Specific
Plan 0.94 0 No 1 unit 35 32
71 013002120 Specific Plan Foothill Boulevard Specific
Plan 0.94 0 No 1 unit 35 32
72 012757228 Specific Plan Foothill Boulevard Specific
Plan 0.96 0 No 1 unit 35 33
73 012757229 Specific Plan Foothill Boulevard Specific
Plan 0.82 0 No 1 unit 35 28
74 012757231 Specific Plan Foothill Boulevard Specific
Plan 0.81 0 No 1 unit 35 28
75 012758230 Specific Plan Foothill Boulevard Specific
Plan 0.55 0 No 1 unit 35 19
76 013005148 Specific Plan Foothill Boulevard Specific
Plan 0.92 0 No 1 unit 35 32
77 013046208 Specific Plan Foothill Boulevard Specific
Plan 1.74 0 No 13 35 61
78 013316405 Specific Plan Foothill Boulevard Specific
Plan 0.65 0 No 1 unit 35 22
79 013339119 Specific Plan Foothill Boulevard Specific
Plan 0.82 0 No 1 unit 35 28
2021-2029 City of Rialto Housing Element – Appendix A: Candidate Housing Sites
HEU ID APN Existing General Plan Land
Use Existing Zoning Size
(acres)
Existing
Units
5th
Cycle
Site
Vacancy
Density (DU/AC) Potential
Net Unit
Yield
Existing
Zone
Density
Rezoned/
Upzoned
Density
80 013339118 Specific Plan Foothill Boulevard Specific
Plan 2.74 0 No 21 35 95
81 012758221 Specific Plan Foothill Boulevard Specific
Plan 0.62 0 Yes 1 unit 35 21
82 012836115 Specific Plan Foothill Boulevard Specific
Plan 2.37 0 Yes 21 35 83
83 012836118 Specific Plan Foothill Boulevard Specific
Plan 0.92 0 No 1 unit 35 32
84 012836119 Specific Plan Foothill Boulevard Specific
Plan 0.92 0 Yes 1 unit 35 32
85 012836121 Specific Plan Foothill Boulevard Specific
Plan 0.92 0 Yes 1 unit 35 32
86 012836122 Specific Plan Foothill Boulevard Specific
Plan 1.61 0 Yes 13 35 56
87 012857125 Specific Plan Foothill Boulevard Specific
Plan 1.61 0 Yes 13 35 56
88 013046207 Specific Plan Foothill Boulevard Specific
Plan 1.63 0 Yes 13 35 56
89 013046102 Specific Plan Foothill Boulevard Specific
Plan 2.03 0 Yes 21 35 71
91 013001313 Specific Plan Foothill Boulevard Specific
Plan 0.57 0 Yes Yes 1 unit 35 19
92 013001312 Specific Plan Foothill Boulevard Specific
Plan 0.57 0 Yes Yes 1 unit 35 19
93 013006105 Specific Plan Foothill Boulevard Specific
Plan 0.69 0 Yes Yes 1 unit 35 24
94 024316113 Specific Plan Foothill Boulevard Specific
Plan 0.67 0 Yes 1 unit 35 23
2021-2029 City of Rialto Housing Element – Appendix A: Candidate Housing Sites
HEU ID APN Existing General Plan Land
Use Existing Zoning Size
(acres)
Existing
Units
5th
Cycle
Site
Vacancy
Density (DU/AC) Potential
Net Unit
Yield
Existing
Zone
Density
Rezoned/
Upzoned
Density
95 012806124 Specific Plan Foothill Boulevard Specific
Plan 0.86 0 Yes No 1 unit 35 30
96 012808143 Specific Plan Foothill Boulevard Specific
Plan 1.12 0 Yes Yes 13 35 39
97 012808145 Specific Plan Foothill Boulevard Specific
Plan 1.13 0 Yes Yes 13 35 39
98 013001311 Specific Plan Foothill Boulevard Specific
Plan 1.13 0 Yes Yes 13 35 39
99 024316151 Specific Plan Foothill Boulevard Specific
Plan 1.17 0 Yes Yes 13 35 40
100 013317109 Specific Plan Foothill Boulevard Specific Plan 1.25 0 Yes 13 35 43
101 013001302 Specific Plan Foothill Boulevard Specific Plan 1.67 0 Yes Yes 13 35 58
102 013317131 Specific Plan Foothill Boulevard Specific Plan 2.08 0 No 21 35 72
103 012807130 Specific Plan Foothill Boulevard Specific Plan 2.09 0 Yes Yes 21 35 73
104 024316110 Specific Plan Foothill Boulevard Specific Plan 2.10 0 Yes Yes 21 35 73
105 012801132 Specific Plan Foothill Boulevard Specific Plan 2.15 0 Yes Yes 21 35 75
106 012801133 Specific Plan Foothill Boulevard Specific Plan 2.23 0 Yes 21 35 78
107 013317108 Specific Plan Foothill Boulevard Specific Plan 2.24 0 Yes 21 35 78
108 013317107 Specific Plan Foothill Boulevard Specific Plan 2.43 0 Yes 21 35 84
2021-2029 City of Rialto Housing Element – Appendix A: Candidate Housing Sites
HEU ID APN Existing General Plan Land
Use Existing Zoning Size
(acres)
Existing
Units
5th
Cycle
Site
Vacancy
Density (DU/AC) Potential
Net Unit
Yield
Existing
Zone
Density
Rezoned/
Upzoned
Density
111 012857126 Specific Plan Foothill Boulevard Specific Plan 5.15 0 Yes 30 35 180
Opportunity Area 2: North Riverside Avenue
112 012703201 Residential 6 R-1A 0.76 0 Yes Yes 2.96 38.72 29 113 012709101 Office A-P 4.63 0 No 0 38.72 44
114 012708104 Office A-P 2.23 0 No 0 38.72 43
115 012708103 Office A-P 2.25 0 No 0 38.72 43
116 012705308 Community Commercial C-1 0.51 0 No 0 38.72 19 117 012704102 Community Commercial C-1 0.77 0 No 0 38.72 14 118 012704143 Community Commercial C-1 0.97 0 No 0 38.72 18 119 012705310 Community Commercial C-1 4.90 0 Yes 0 38.72 189 Opportunity Area 3: Gateway Specific Plan
120 025404113 Business Park Gateway Specific Plan 9.86 0 Yes 0 35 345 121 025404111 General Commercial Gateway Specific Plan 10.08 0 No 0 35 352 Opportunity Area 4: Central Area Specific Plan
124 013022226 Downtown Mixed-Use Rialto Central Area Specific Plan 1.22 0 No 0 38.4 46
125 013022216 Downtown Mixed-Use Rialto Central Area Specific Plan 0.68 0 No 0 38.4 26
126 013022219 Downtown Mixed-Use Rialto Central Area Specific Plan 0.62 0.62 0 No No No
2021-2029 City of Rialto Housing Element – Appendix A: Candidate Housing Sites
HEU ID APN Existing General Plan Land
Use Existing Zoning Size
(acres)
Existing
Units
5th
Cycle
Site
Vacancy
Density (DU/AC) Potential
Net Unit
Yield
Existing
Zone
Density
Rezoned/
Upzoned
Density
128 013014116 Residential 21 Rialto Central Area Specific Plan 2.01 0 No 0 38.4 19
129 013022227 Downtown Mixed-Use Rialto Central Area Specific Plan 1.03 0 No 0 38.4 39
130 013022223 Downtown Mixed-Use Rialto Central Area Specific Plan 0.12 0 Yes No 0 38.4 4
131 013022220 Downtown Mixed-Use Rialto Central Area Specific Plan 0.30 0 Yes 0 38.4 11
132 013022207 Downtown Mixed-Use Rialto Central Area Specific Plan 0.17 0 No 0 38.4 6
133 013022206 Downtown Mixed-Use Rialto Central Area Specific Plan 0.17 0 Yes Yes 0 38.4 6
134 013014110 Residential 21 Rialto Central Area Specific Plan 0.32 0 Yes Yes 0 38.4 12
136 013028148 Downtown Mixed-Use Rialto Central Area Specific Plan 0.59 0 No 0 38.4 22
137 013028135 Downtown Mixed-Use Rialto Central Area Specific Plan 0.29 0 Yes 0 38.4 11
138 013027104 Downtown Mixed-Use Rialto Central Area Specific Plan 0.08 0 No 0 38.4 3
139 013027125 Downtown Mixed-Use Rialto Central Area Specific Plan 0.08 0 Yes 0 38.4 3
140 013027103 Downtown Mixed-Use Rialto Central Area Specific Plan 0.08 0 No 0 38.4 3
141 013027126 Downtown Mixed-Use Rialto Central Area Specific Plan 0.08 0 Yes 0 38.4 3
142 013027102 Downtown Mixed-Use Rialto Central Area Specific Plan 0.08 0 No 0 38.4 3
2021-2029 City of Rialto Housing Element – Appendix A: Candidate Housing Sites
HEU ID APN Existing General Plan Land
Use Existing Zoning Size
(acres)
Existing
Units
5th
Cycle
Site
Vacancy
Density (DU/AC) Potential
Net Unit
Yield
Existing
Zone
Density
Rezoned/
Upzoned
Density
143 013027127 Downtown Mixed-Use Rialto Central Area Specific Plan 0.08 0 No 0 38.4 3
144 013027101 Downtown Mixed-Use Rialto Central Area Specific Plan 0.08 0 No 0 38.4 3
145 013028136 Downtown Mixed-Use Rialto Central Area Specific Plan 0.19 0 No 0 38.4 7
146 013027122 Downtown Mixed-Use Rialto Central Area Specific Plan 0.24 0 No 0 38.4 9
147 013027123 Downtown Mixed-Use Rialto Central Area Specific Plan 0.16 0 Yes 0 38.4 6
149 013027105 Downtown Mixed-Use Rialto Central Area Specific Plan 0.16 0 No 0 38.4 6
152 013027112 Downtown Mixed-Use Rialto Central Area Specific Plan 0.21 0 Yes No 0 38.4 8
153 013027120 Downtown Mixed-Use Rialto Central Area Specific Plan 0.16 0 Yes 0 38.4 6
154 013027106 Downtown Mixed-Use Rialto Central Area Specific Plan 0.16 0 Yes 0 38.4 6
155 013028104 Downtown Mixed-Use Rialto Central Area Specific Plan 0.16 0 Yes 0 38.4 6
157 013028139 Downtown Mixed-Use Rialto Central Area Specific Plan 0.16 0 No 0 38.4 6
158 013027118 Downtown Mixed-Use Rialto Central Area Specific Plan 0.08 0 No 0 38.4 3
159 013028103 Downtown Mixed-Use Rialto Central Area Specific Plan 0.08 0 No 0 38.4 3
160 013028102 Downtown Mixed-Use Rialto Central Area Specific Plan 0.08 0 No 0 38.4 3
2021-2029 City of Rialto Housing Element – Appendix A: Candidate Housing Sites
HEU ID APN Existing General Plan Land
Use Existing Zoning Size
(acres)
Existing
Units
5th
Cycle
Site
Vacancy
Density (DU/AC) Potential
Net Unit
Yield
Existing
Zone
Density
Rezoned/
Upzoned
Density
161 013027124 Downtown Mixed-Use Rialto Central Area Specific Plan 0.16 0 No 0 38.4 6
162 013025101 Downtown Mixed-Use Rialto Central Area Specific Plan 0.07 0 Yes 0 38.4 2
163 013025102 Downtown Mixed-Use Rialto Central Area Specific Plan 0.07 0 Yes 0 38.4 2
164 013025103 Downtown Mixed-Use Rialto Central Area Specific Plan 0.07 0 Yes 0 38.4 2
165 013025104 Downtown Mixed-Use Rialto Central Area Specific Plan 0.07 0 Yes 0 38.4 2
166 013025105 Downtown Mixed-Use Rialto Central Area Specific Plan 0.07 0 Yes 0 38.4 2
167 013025106 Downtown Mixed-Use Rialto Central Area Specific Plan 0.14 0 Yes Yes 0 38.4 5
168 013025135 Downtown Mixed-Use Rialto Central Area Specific Plan 0.11 0 Yes 0 38.4 4
169 013025136 Downtown Mixed-Use Rialto Central Area Specific Plan 0.07 0 Yes 0 38.4 2
170 013025142 Downtown Mixed-Use Rialto Central Area Specific Plan 0.24 0 Yes Yes 0 38.4 9
173 013023102 Downtown Mixed-Use Rialto Central Area Specific Plan 0.16 0 Yes No 0 38.4 6
174 013023103 Downtown Mixed-Use Rialto Central Area Specific Plan 0.16 0 Yes No 0 38.4 6
175 013023106 Downtown Mixed-Use Rialto Central Area Specific Plan 0.24 0 Yes No 0 38.4 9
176 013023109 Downtown Mixed-Use Rialto Central Area Specific Plan 0.16 0 Yes Yes 0 38.4 6
2021-2029 City of Rialto Housing Element – Appendix A: Candidate Housing Sites
HEU ID APN Existing General Plan Land
Use Existing Zoning Size
(acres)
Existing
Units
5th
Cycle
Site
Vacancy
Density (DU/AC) Potential
Net Unit
Yield
Existing
Zone
Density
Rezoned/
Upzoned
Density
177 013023110 Downtown Mixed-Use Rialto Central Area Specific Plan 0.16 0 Yes Yes 0 38.4 6
178 013023111 Downtown Mixed-Use Rialto Central Area Specific Plan 0.16 0 Yes Yes 0 38.4 6
179 013023112 Downtown Mixed-Use Rialto Central Area Specific Plan 0.16 0 Yes Yes 0 38.4 6
180 013023120 Downtown Mixed-Use Rialto Central Area Specific Plan 0.24 0 No 38.4 38.4 9
181 013023121 Downtown Mixed-Use Rialto Central Area Specific Plan 0.08 0 Yes 38.4 38.4 3
182 013023122 Downtown Mixed-Use Rialto Central Area Specific Plan 0.16 0 Yes 38.4 38.4 6
183 013023123 Downtown Mixed-Use Rialto Central Area Specific Plan 0.16 0 Yes Yes 38.4 38.4 6
184 013023124 Downtown Mixed-Use Rialto Central Area Specific Plan 0.12 0 Yes 38.4 38.4 4
185 013023125 Downtown Mixed-Use Rialto Central Area Specific Plan 0.20 0 Yes Yes 0 38.4 7
186 013023126 Downtown Mixed-Use Rialto Central Area Specific Plan 0.20 0 Yes Yes 0 38.4 7
187 013023127 Downtown Mixed-Use Rialto Central Area Specific Plan 0.16 0 Yes Yes 0 38.4 6
188 013027113 Downtown Mixed-Use Rialto Central Area Specific Plan 0.24 0 Yes 0 38.4 9
189 013027114 Downtown Mixed-Use Rialto Central Area Specific Plan 0.20 0 Yes Yes 0 38.4 7
190 013027115 Downtown Mixed-Use Rialto Central Area Specific Plan 0.11 0 Yes Yes 0 38.4 4
2021-2029 City of Rialto Housing Element – Appendix A: Candidate Housing Sites
HEU ID APN Existing General Plan Land
Use Existing Zoning Size
(acres)
Existing
Units
5th
Cycle
Site
Vacancy
Density (DU/AC) Potential
Net Unit
Yield
Existing
Zone
Density
Rezoned/
Upzoned
Density
191 013027116 Downtown Mixed-Use Rialto Central Area Specific Plan 0.16 0 Yes Yes 0 38.4 6
Opportunity Area 5: Baseline Parcels
192 012715113 Residential 21 R-3 2.36 0 Yes Yes 17.424 35 82 193 013302329 Residential 6 R-1A 0.28 0 Yes Yes 2.96 35 9 194 013302330 Residential 6 R-1A 0.28 0 Yes Yes 2.96 35 9 195 013302331 Residential 6 R-1A 0.23 0 Yes Yes 2.96 35 8 196 013302328 Residential 6 R-1A 0.23 0 Yes Yes 2.96 35 7 197 013302327 Residential 6 R-1A 0.23 0 Yes Yes 2.96 35 7 198 013302326 Residential 6 R-1A 0.23 0 Yes Yes 2.96 35 8 199 013302325 Residential 6 R-1A 0.27 0 Yes Yes 2.96 35 9 200 012728106 Community Commercial R-3 4.00 0 No 17.424 35 35 300 026421351 Community Commercial Rialto Airport Specific Plan 0.87 0 Yes 0 35 30 Opportunity Area 6: Baseline Shopping Center
201 012732122 Community Commercial C-1A 0.73 0 No 0 30 10 202 012732140 Community Commercial C-1A 0.53 0 No 0 30 7 203 012731124 Community Commercial C-1 1.01 0 No 0 30 15 204 012726105 Community Commercial C-1 0.51 0 No 0 30 7 205 012732146 Community Commercial C-1A 0.50 0 No 0 30 7 206 012732147 Community Commercial C-1A 1.56 0 No 0 30 23 2021-2029 City of Rialto Housing Element – Appendix A: Candidate Housing Sites
HEU ID APN Existing General Plan Land
Use Existing Zoning Size
(acres)
Existing
Units
5th
Cycle
Site
Vacancy
Density (DU/AC) Potential
Net Unit
Yield
Existing
Zone
Density
Rezoned/
Upzoned
Density
207 012732105 Community Commercial C-1A 0.51 0 No 0 30 7 208 012731121 Community Commercial C-1 1.20 0 No 0 30 17 209 012726112 Community Commercial C-1A 2.14 0 No 0 30 32 210 012726108 Community Commercial C-1A 0.52 0 No 0 30 7 211 012731119 Community Commercial C-1A 8.64 0 No 0 30 129 212 012732145 Community Commercial C-1A 2.37 0 No 0 30 35 213 012726110 Community Commercial C-1A 0.73 0 No 0 30 11 214 012732123 Community Commercial C-1 0.73 0 No 0 30 10 215 012732104 Community Commercial C-1A 1.74 0 No 0 30 26 216 012732103 Community Commercial C-1A 0.63 0 No 0 30 9 217 012726116 Community Commercial C-1A 0.51 0 No 0 30 7 218 012731125 Community Commercial C-1 1.03 0 No 0 30 15 219 012731123 Community Commercial C-1 0.85 0 No 0 30 12 220 012725115 Community Commercial C-1A 0.80 0 No 0 30 11 221 012725119 Community Commercial C-1A 0.69 0 No 0 30 10 222 012725120 Community Commercial C-1A 1.46 0 No 0 30 21 223 012725118 Community Commercial C-1A 0.80 0 No 0 30 11 224 012725117 Community Commercial C-1A 0.34 0 No 0 30 5 225 012725116 Community Commercial C-1A 0.43 0 Yes 0 30 6 2021-2029 City of Rialto Housing Element – Appendix A: Candidate Housing Sites
HEU ID APN Existing General Plan Land
Use Existing Zoning Size
(acres)
Existing
Units
5th
Cycle
Site
Vacancy
Density (DU/AC) Potential
Net Unit
Yield
Existing
Zone
Density
Rezoned/
Upzoned
Density
226 012725113 Community Commercial C-1A 7.61 0 No 0 30 114 227 012725112 Community Commercial C-1A 4.23 0 No 0 30 63 228 012725114 Community Commercial C-1A 0.98 0 Yes 0 30 14 229 012726115 Community Commercial C-1A 0.64 0 No 0 30 9 230 012726113 Community Commercial C-1A 0.80 0 No 0 30 12 231 012726109 Community Commercial C-1A 3.67 0 No 0 30 55 232 012726106 Community Commercial C-1A 3.67 0 No 0 30 55 233 012726114 Community Commercial C-1A 1.43 0 No 0 30 21 234 012726107 Community Commercial C-1A 1.82 0 No 0 30 27 235 012726111 Community Commercial C-1A 1.10 0 No 0 30 16 Area 7: Randall Avenue Sites
324 013202104 #N/A A-1 0.22 1 No #N/A 30 5
325 013202115 #N/A A-1 0.11 0 Yes #N/A 30 3
326 013202103 #N/A A-1 0.21 1 No #N/A 30 5
327 013202114 R2 A-1 2.54 0 Yes Yes 1.6 30 76
328 013202112 #N/A A-1 0.32 0 Yes #N/A 30 9
329 013202113 R2 A-1 0.63 0 Yes Yes 1.6 30 18
Table A-2: Sites Inventory – Entitled Specific Plans
2021-2029 City of Rialto Housing Element – Appendix A: Candidate Housing Sites
HEU ID APN Existing General Plan Land
Use Existing Zoning Size
(Acres)
Existing
Units
5th
Cycle
Site
Vacancy
Density (DU/AC) Potential
Net Unit
Yield
Existing
Zone
Density
Rezoned/
Upzoned
Density
Lytle Creek Specific Plan
236 023918102 Specific Plan Lytle Creek Ranch Specific
Plan 3.76 0 Yes 2.96 N/A 14
237 023918103 Specific Plan Lytle Creek Ranch Specific
Plan 6.13 0 Yes 2.96 N/A 23
238 023918116 Specific Plan Lytle Creek Ranch Specific
Plan 8.99 0 No 2.96 N/A 33
239 023918118 Specific Plan Lytle Creek Ranch Specific
Plan 11.58 0 No 2.96 N/A 43
240 023918110 Open Space - Resources Lytle Creek Ranch Specific Plan 0.51 0 Yes 2.96 N/A 2
241 023918117 Specific Plan Lytle Creek Ranch Specific
Plan 7.74 0 Yes 2.96 N/A 28
242 023918112 Open Space - Resources Lytle Creek Ranch Specific Plan 1.47 0 Yes 2.96 N/A 5
243 023911115 Specific Plan Lytle Creek Ranch Specific
Plan 28.33 0 Yes 2.96 N/A 104
244 023911112 Specific Plan Lytle Creek Ranch Specific
Plan 105.00 0 Yes 2.96 N/A 386
245 023912106 Specific Plan Lytle Creek Ranch Specific
Plan 27.09 0 Yes 2.96 N/A 100
246 023911111 Specific Plan Lytle Creek Ranch Specific
Plan 29.93 0 Yes 2.96 N/A 110
247 023918101 Specific Plan Lytle Creek Ranch Specific
Plan 4.25 0 Yes 2.96 N/A 16
248 023909428 Specific Plan Lytle Creek Ranch Specific
Plan 6.70 0 Yes 2.96 N/A 25
2021-2029 City of Rialto Housing Element – Appendix A: Candidate Housing Sites
HEU ID APN Existing General Plan Land
Use Existing Zoning Size
(Acres)
Existing
Units
5th
Cycle
Site
Vacancy
Density (DU/AC) Potential
Net Unit
Yield
Existing
Zone
Density
Rezoned/
Upzoned
Density
249 023909431 Specific Plan Lytle Creek Ranch Specific
Plan 100.00 0 Yes 2.96 N/A 367
250 023911108 Specific Plan Lytle Creek Ranch Specific
Plan 7.67 0 Yes 2.96 N/A 28
251 023909429 Specific Plan Lytle Creek Ranch Specific
Plan 1.38 0 Yes 2.96 N/A 5
252 023909432 Specific Plan Lytle Creek Ranch Specific
Plan 22.86 0 Yes 2.96 N/A 84
253 023909440 Specific Plan Lytle Creek Ranch Specific
Plan 1.36 0 Yes 2.96 N/A 5
254 026403221 Residential 6 Lytle Creek Ranch Specific
Plan 4.15 0 Yes 2.96 N/A 15
255 026401131 Open Space - Resources Lytle Creek Ranch Specific Plan 2.35 0 Yes 2.96 N/A 9
256 026401134 Specific Plan Lytle Creek Ranch Specific
Plan 3.44 0 Yes 2.96 N/A 13
257 026401132 Open Space - Resources Lytle Creek Ranch Specific Plan 1.62 0 Yes 2.96 N/A 6
258 026401125 Open Space - Resources R-1A 1.28 0 Yes Yes 2.96 N/A 5 259 026401126 Residential 6 Lytle Creek Ranch Specific
Plan 3.93 0 Yes No 2.96 N/A 14
260 026401136 Specific Plan Lytle Creek Ranch Specific
Plan 3.23 0 Yes 2.96 N/A 12
261 026401135 Residential 6 Lytle Creek Ranch Specific
Plan 1.45 0 Yes No 2.96 N/A 5
262 026442136 Specific Plan Lytle Creek Ranch Specific
Plan 0.56 0 Yes 2.96 N/A 2
2021-2029 City of Rialto Housing Element – Appendix A: Candidate Housing Sites
HEU ID APN Existing General Plan Land
Use Existing Zoning Size
(Acres)
Existing
Units
5th
Cycle
Site
Vacancy
Density (DU/AC) Potential
Net Unit
Yield
Existing
Zone
Density
Rezoned/
Upzoned
Density
263 023912119 Specific Plan Lytle Creek Ranch Specific
Plan 94.01 0 Yes 11.2 N/A 345
264 023912123 Specific Plan Lytle Creek Ranch Specific
Plan 269.07 0 Yes 0 N/A 988
265 023909437 Specific Plan Lytle Creek Ranch Specific
Plan 7.05 0 Yes 0 N/A 26
266 023909438 Specific Plan Lytle Creek Ranch Specific
Plan 0.83 0 Yes 0 N/A 3
267 023909439 Specific Plan Lytle Creek Ranch Specific
Plan 7.94 0 Yes 0 N/A 29
268 026401119 Open Space - Recreation Lytle Creek Ranch Specific Plan 5.14 0 Yes 0 N/A 19
269 026442121 Open Space - Recreation Lytle Creek Ranch Specific Plan 5.88 0 Yes 0 N/A 22
270 026442120 Open Space - Recreation Lytle Creek Ranch Specific Plan 4.26 0 Yes 0 N/A 16
271 026442117 Open Space - Recreation Lytle Creek Ranch Specific Plan 2.92 0 Yes 0 N/A 11
272 026203112 Specific Plan Lytle Creek Ranch Specific
Plan 23.45 0 Yes 0 N/A 86
273 026442109 Open Space - Resources Lytle Creek Ranch Specific Plan 19.77 0 Yes 0 N/A 73
274 026401122 Open Space - Recreation Lytle Creek Ranch Specific Plan 0.93 0 Yes 0 N/A 3
275 026401110 Specific Plan Lytle Creek Ranch Specific
Plan 6.28 0 Yes 0 N/A 23
276 026442118 Open Space - Resources Lytle Creek Ranch Specific Plan 11.06 0 Yes 0 N/A 41
2021-2029 City of Rialto Housing Element – Appendix A: Candidate Housing Sites
HEU ID APN Existing General Plan Land
Use Existing Zoning Size
(Acres)
Existing
Units
5th
Cycle
Site
Vacancy
Density (DU/AC) Potential
Net Unit
Yield
Existing
Zone
Density
Rezoned/
Upzoned
Density
277 026203106 Specific Plan Lytle Creek Ranch Specific
Plan 5.19 0 Yes 0 N/A 19
278 026207128 Specific Plan Lytle Creek Ranch Specific
Plan 57.94 0 Yes 11.2 N/A 213
279 026442106 Open Space - Recreation Lytle Creek Ranch Specific Plan 1.70 0 Yes 0 N/A 6
280 026207142 Specific Plan Lytle Creek Ranch Specific
Plan 2.54 0 Yes 0 N/A 9
281 026207141 Specific Plan Lytle Creek Ranch Specific
Plan 0.20 0 Yes 0 N/A 1
282 026207139 Specific Plan Lytle Creek Ranch Specific
Plan 45.41 0 Yes 0 N/A 167
283 026442130 Open Space - Recreation Lytle Creek Ranch Specific Plan 1.65 0 Yes 0 N/A 6
284 026442112 Open Space - Recreation Lytle Creek Ranch Specific Plan 9.34 0 Yes 0 N/A 34
285 026207115 Specific Plan Lytle Creek Ranch Specific
Plan 337.60 0 Yes 6.4 N/A 1,240
286 026207131 Specific Plan Lytle Creek Ranch Specific
Plan 57.74 0 Yes 11.2 N/A 212
287 026442126 Open Space - Resources Lytle Creek Ranch Specific Plan 2.00 0 Yes 28 N/A 7
288 026478112 Open Space - Recreation Lytle Creek Ranch Specific Plan 3.27 0 Yes 0 N/A 12
289 111601215 Specific Plan Lytle Creek Ranch Specific
Plan 166.18 0 Yes 2.96 N/A 610
290 023912120 Specific Plan Lytle Creek Ranch Specific
Plan 19.28 0 No 0 N/A 71
2021-2029 City of Rialto Housing Element – Appendix A: Candidate Housing Sites
HEU ID APN Existing General Plan Land
Use Existing Zoning Size
(Acres)
Existing
Units
5th
Cycle
Site
Vacancy
Density (DU/AC) Potential
Net Unit
Yield
Existing
Zone
Density
Rezoned/
Upzoned
Density
291 026442132 Specific Plan Lytle Creek Ranch Specific
Plan 4.07 0 Yes 0 N/A 15
292 026442135 Residential 6/Open Space
- Recreation
Lytle Creek Ranch Specific
Plan 134.59 0 No 0 N/A 494
Renaissance Specific Plan
293 026415175 Specific Plan Renaissance Specific Plan 4.29 0 No 0 30 78 294 026415184 Specific Plan Renaissance Specific Plan 7.30 0 Yes 0 30 133 295 026415162 Specific Plan Renaissance Specific Plan 4.81 0 Yes 0 30 87 296 026415174 Specific Plan Renaissance Specific Plan 2.33 0 No 0 30 42 297 026415186 Specific Plan Renaissance Specific Plan 5.72 0 Yes 0 30 104 298 026415153 Specific Plan Renaissance Specific Plan 19.45 0 Yes 0 30 354 299 026415182 Specific Plan Renaissance Specific Plan 26.37 0 Yes 0 30 480
Table A-3: Sites Inventory – Pipeline Projects
HEU ID APN
Existing General Plan Land
Use Existing Zoning Size
(Acres)
Existing
Units
5th
Cycle
Site
Vacancy
Density (DU/AC) Potential
Net Unit
Yield
Existing
Zone
Density
Rezoned/
Upzoned
Density
301 025009125 Residential 6 R-1C 1.42 0 Yes Yes 3.12 N/A 11 302 025009126 Residential 6 R-1C 1.50 0 Yes Yes 3.12 N/A 11 303 012807109 Specific Plan Foothill Boulevard Specific Plan 3.85 0 Yes Yes 30 N/A 60
2021-2029 City of Rialto Housing Element – Appendix A: Candidate Housing Sites
HEU ID APN
Existing General Plan Land
Use Existing Zoning Size
(Acres)
Existing
Units
5th
Cycle
Site
Vacancy
Density (DU/AC) Potential
Net Unit
Yield
Existing
Zone
Density
Rezoned/
Upzoned
Density
304 012807102 Specific Plan Foothill Boulevard Specific Plan 0.29 0 Yes Yes 1 unit N/A 4
305 012807103 Specific Plan Foothill Boulevard Specific Plan 0.40 0 Yes Yes 1 unit N/A 6
306 013102140 Downtown Mixed-Use Rialto Central Area Specific Plan 1.26 0 Yes 0 N/A 55
307 013102136 Residential 21 Rialto Central Area Specific Plan 0.87 0 Yes Yes 0 N/A 56
308 012805140 Specific Plan Foothill Boulevard Specific Plan 0.80 0 Yes 1 unit N/A 10
309 012805139 Specific Plan Foothill Boulevard Specific Plan 0.80 0 Yes 1 unit N/A 10
310 012805142 Specific Plan Foothill Boulevard Specific Plan 4.89 0 Yes 30 N/A 61
311 012805141 Specific Plan Foothill Boulevard Specific Plan 1.46 0 Yes 13 N/A 18
312 012805135 Specific Plan Foothill Boulevard Specific Plan 2.12 0 Yes 21 N/A 27
313 012805137 Specific Plan Foothill Boulevard Specific Plan 4.66 0 Yes 30 N/A 58
Table A-4: Sites Inventory: 5th Cycle Housing Sites
2021-2029 City of Rialto Housing Element – Appendix A: Candidate Housing Sites
HEU ID APN Existing General Plan Land
Use Existing Zoning Size
(Acres)
Existing
Units
5th
Cycle
Site
Vacancy
Density (DU/AC) Potential
Net Unit
Yield
Existing
Zone
Density
Rezoned/
Upzoned
Density
314 026401248 R6 R-1B 5.58 0 Yes Yes 4.8 NA 26
316 023934113 R6 R-1A 1.34 0 Yes Yes 4.8 N/A 6
317 113328105 R6 R-1B 2.54 0 Yes Yes 4.8 N/A 12
318 113328106 R6 R-1B 2.49 0 Yes Yes 4.8 N/A 11
319 026401224 R6 R-1B 0.45 0 Yes Yes 4.8 N/A 2
320 113309135 R6 R-1A 0.54 0 Yes Yes 4.8 N/A 2
321 113310112 R6 R-1A 0.23 0 Yes Yes 4.8 N/A 1
322 113328102 R6 R-1B 0.39 0 Yes Yes 4.8 N/A 1
323 113310130 R6 R-1A 0.34 0 Yes Yes 4.8 N/A 1