Lancaster City Council
January 24, 2023

AVANTI NORTH SPECIFIC PLAN II. Land Use, Infrastructure, and Approach to Development
page II-18
C. Conceptual Drainage Plan

1. Drainage Plan Description
The AVANTI NORTH drainage system is designed to follow the natural direction of water flow across the property. In its pre-development condition, the property drains as sheet flow in northerly direction toward Avenue K. Figure II-8, Conceptual Drainage Plan, shows the drainage plan for AVANTI NORTH, which includes an engineered system of storm drain facilities that convey water based on 50-year storm events.

Within AVANTI NORTH, the roadway curbs and gutters convey runoff water into the drainage system. Water flows from the streets into storm drain inlets, which drain into catch basins and underground pipes. The subsurface pipes then convey the water into a series of large detention basins in Planning Areas H and I.

The basins are positioned along the west side of 65th Street West, and transfer flows from one to another in a south to north direction. The detention basins account for 10.4 acres and also serve as an attractive, landscaped visual amenity along the roadway. The basins help filter out pollutants while also detaining the water prior to off-site discharge at an outlet structure located at the intersection of Avenue K and 65th Street West. Outflow from the basins is controlled at the outlet structure to ensure that the rate of discharge is within the capacity of the off-site facilities.

The drainage system also conveys water from upstream properties that flow across the AVANTI NORTH property in its pre-development condition. Drainage flowing toward AVANTI NORTH from the south is discharged from an existing storm drain outlet at Avenue L and an earthen swale located along the south side Avenue K-8. Water in the earthen swale flows to low points where it is collected and conveyed across Avenue K-8 to a storm drain pipe installed beneath AVANTI NORTH’s 65th Street West. This pipe beneath 65th Street West conveys the water through AVANTI NORTH to an existing storm drain line located within Avenue K at the Specific Plan’s northern boundary then discharges into an open channel north of Avenue K.

The AVANTI NORTH Conceptual Drainage Plan also improves the drainage condition for the residential neighborhood to the east. Before AVANTI NORTH’s development, storm water flows from the existing residential neighborhood through a storm drainpipe that discharges into a trapezoidal channel north of Avenue K and 65th Street West. AVANTI NORTH provides for the removal of the existing trapezoidal channel and the construction of two 72” storm drain pipes as part of the storm drain improvements shown on Figure II-8, Conceptual Drainage Plan.

2. Drainage Standards
(1) Drainage and flood control facilities and improvements shall be provided in accordance with the standards and requirements of the City of Lancaster Master Plan of Drainage (Jan. 2020). (2) Major drainage facilities within public rights-of-way and drainage easements shall be maintained by the City of Lancaster.

AVANTI NORTH SPECIFIC PLAN II. Land Use, Infrastructure, and Approach to Development
page II-20
D. Conceptual Water & Sewer Plans

1. Water Plan Description
The AVANTI NORTH water plan is shown on Figure II-9, Conceptual Water Plan. Connections to water mains are made at the Specific Plan’s eastern boundary at Avenue K, Avenue K-1, Avenue K-4, and Avenue K-8.

At the Specific Plan’s southeastern corner, a 12-inch diameter water main extends westward beneath Avenue K-8 from the point of connection to 70th Street West. Water mains also occur beneath 65th Street West (12-inch diameter), 70th Street West (16-inch diameter) and Avenue K (16-inch diameter from 70th Street West to 65th Street West and 12-inch diameter from 65th Street West to the northeastern Specific Plan boundary) to form a loop system. The loop system ensures a continuous water supply to AVANTI NORTH in the event of a water main break at any one location. Water lines with diameters of 6- to 8-inches occur in every AVANTI NORTH interior road to provide service to individual water users.

Water conservation is a key consideration for AVANTI NORTH. Refer to Section IV, Landscape Plan and Guidelines, for information about the community’s drought-tolerant landscape plan and water-efficient irrigation system. Refer to Section V, Architecture Guidelines, for information on water-conserving features in home construction.

2. Sewer Plan Description
The AVANTI NORTH sewer plan is shown on Figure II-10, Conceptual Sewer Plan. A sewer conveyance line is located north of AVANTI NORTH at the intersection of Avenue K and 65th Street West. This line conveys sewer further north for treatment at the Lancaster Water Reclamation Plant (WRP) located at West Avenue D. To reach the connection point to this line at Avenue K and 65th Street West, wastewater from Planning Areas A, B, C, and G is engineered to flow generally northeast through sewer pipes installed beneath the street network. Similarly, wastewater from Planning Areas D, E, and F is engineered to flow generally northwest through sewer pipes installed beneath the street network. An 18-inch sewer line stub is proposed at the intersection of Avenue K-8 and 65th Street West to the future Avanti South development.

3. Water & Sewer Standards
(1) All water and sewer lines in AVANTI NORTH shall be placed underground. (2) All water and sewer facilities shall be designed per the requirements of the City of Lancaster, Los Angeles County Waterworks District 40, and the Los Angeles County Sanitation District 14. (3) Facility sizes and locations presented in this Specific Plan are conceptual and may be larger or smaller than indicated on Figure II-9, Conceptual Water Plan, and Figure II-10, Conceptual Sewer Plan.

Additionally, facilities may be installed in different locations than shown on Figure II-9 or Figure II-10, in accordance with City, County, and Sanitation District requirements.

AVANTI NORTH SPECIFIC PLAN II. Land Use, Infrastructure, and Approach to Development
page II-21
(4) Water and sewer facilities shall be installed in accordance with the requirements and specifications of the City of Lancaster Building Division, the State of California, Department of Public Health, the Los Angeles County Waterworks District 40, and the Los Angeles County Sanitation District 14. (5) The project proponent shall obtain current will-serve letters from the Los Angeles Waterworks District 40 and the Los Angeles County Sanitation District 14 prior to recordation of implementing any tract map(s).

AVANTI NORTH SPECIFIC PLAN II. Land Use, Infrastructure, and Approach to Development
page II-24
E. Open Space and Recreation Plan

1. Open Space & Recreation Plan Description
AVANTI NORTH provides 20.6 acres of open space and recreational area, including two neighborhood parks together totaling 10.2 acres, and 10.4 acres of open space that serves water detention purposes. Refer to Table II-2, Open Space and Recreation Land Use Summary.

Table II-2 Open Space and Recreation Land Use Summary
Planning
Area Land Use Acres
F Neighborhood Park 4.2
G Neighborhood Park 6.0
Active Recreation Subtotal 10.2
H Open Space 5.0
I Open Space 5.4
Open Space Subtotal 10.4
Open Space and Recreation Total 20.6
Neighborhood Parks
Two neighborhood parks in AVANTI NORTH provide residents with convenient access to passive recreational opportunities, such as open play areas, shaded seating and picnic areas, workout stations, and walkways.

The parks are focal points of the community and each act as a central gathering space in the western and eastern portions of the Specific Plan area. As parks, they are available for use by residents and visitors to AVANTI NORTH. The park in Planning Area F is 4.2 acres and the park in Planning Area G is 6.0 acres. These

10.2 acres are intended to meet the requirement for 5.0 acres of parkland per 1,000 residents. Refer to Section IV, Landscape Plan and Guidelines for more information about park design and a conceptual design of each park.

Detention Basins
Along the west side of 65th Street West is a linear 10.4-acre open space area that functions as series of detention basins that convey water during storm events. Planning Area H is 5.0 acres and Planning Area I is 5.4 acres. The design of these areas simulates a dry creek bed to serve as an aesthetic and functional amenity. Pedestrian pathways are placed along the perimeter of the detention basins as part of the community’s non-vehicular circulation plan. For more information about the design of the open space features, refer to Section IV, Landscape Plan and Guidelines.

AVANTI NORTH SPECIFIC PLAN II. Land Use, Infrastructure, and Approach to Development
page II-25

2. Open Space & Recreation Plan Standards
(1) Conceptual design and landscaping plans for the neighborhood parks shall be submitted in conjunction with tentative map applications. All recreational facilities in the parks shall be landscaped with turf and/or drought tolerant plants, and, where necessary, irrigated in a manner that is conducive to the type of plant material and the City of Lancaster’s climatic setting. (2) Landscaping within the neighborhood parks and open space areas shall be further governed by Section IV, Landscape Plan and Guidelines.
(3) The Homeowners’ Association is responsible for maintaining the neighborhood parks and open space/detention basins.
(4) The LMD is responsible for the maintenance of landscaped parkways and center medians within the public roadway rights-of-way (ROW), including easements outside of the ROW, as detailed Section II.G, Maintenance Plan.

AVANTI NORTH SPECIFIC PLAN II. Land Use, Infrastructure, and Approach to Development
page II-26
F. Conceptual Grading Plan

1. Grading Plan Description
To build AVANTI NORTH, grading (earthwork movement) is necessary to form development pads and the street and infrastructure networks. The pre-development condition of AVANTI NORTH is generally flat and gently slopes from the south to the north. The grading concept works with the pre-development topography to maintain natural grades and elevations whenever possible. Grading within the Specific Plan area will involve clearing and grubbing of the scant vegetation, and then the moving of surface soils to construct building pads and streets. Because the property is relatively flat, only a minimal amount of cut and fill is required. Residential building pads are designed to be within one to four feet of the predevelopment elevation. Wherever possible, development pad elevations adjacent to the residential community located immediately east of AVANTI NORTH are at grade or below the grade of the adjacent community’s pad elevations.

Grading and earthwork activities necessary to support development of the site is estimated to generate 1,260,000 cubic yards of raw cut and 1,260,000 cubic yards for raw fill. Accordingly, grading and earthwork activities are expected to balance and will not require the import or export of materials to or from the subject property. Earthwork quantities shall be refined during the final engineering process.

2. Grading Standards
(1) Grading shall conform to City of Lancaster regulations, including but not limited to the City’s Engineering Design Guidelines and dust and erosion control requirements. The City of Lancaster’s Development Services Department shall review and approve all grading plans prior to the issuance of grading permits.
(2) Cut and fill quantities shall be balanced on-site.
(3) A preliminary grading plan shall accompany each tentative tract map for review and approval by the City of Lancaster Development Services Department. Subsequent detailed grading plans shall substantially conform to the preliminary grading plan(s) approved with the tract map(s). The preliminary plans shall indicate preliminary development pad and roadway elevations, the techniques that will be used to prevent erosion and sedimentation during rain events and high winds, and the expected construction vehicle fleet to be used for grading (types and number of pieces of equipment). (4) The developer/owner shall be responsible for maintenance and upkeep of all planting and irrigation systems installed during and after the grading operation until those operations are the responsibilities of other parties, which may include homeowners, the LMD, or other.

AVANTI NORTH SPECIFIC PLAN II. Land Use, Infrastructure, and Approach to Development
page II-27
G. Maintenance Plan
Figure II-11, Maintenance Plan, illustrates and Table II-3, Maintenance Plan Summary, summarizes the long-term maintenance responsibilities for property within the AVANTI NORTH Specific Plan.

Table II-3 Maintenance Plan Summary
Facility
Lancaster
Landscape
Maintenance
Assessment District
Homeowner
Homeowner’s
Association
(HOA)
Neighborhood Parks ✓
Detention Basins ✓
Landscaped Parkways, Roundabouts,
Pedestrian Circulation, and Medians
Within Public Arterial ROW
✓
Easements Not Within Public ROW ✓
Pedestrian Circulation Not Within
Public ROW
✓
Private Residential Lots ✓
Parkway Not Within Public ROW or
Easement
✓
Manufactured Slopes Not Within
Public Row or Easement
✓
Paseos At The Bulb Ends Of Cul-de-Sac
Streets Connecting to Arterials
✓
Landscaped Parkways Along Collector
Roads and Local Roads
✓

AVANTI NORTH SPECIFIC PLAN II. Land Use, Infrastructure, and Approach to Development
page II-29
H. Conceptual Phasing Plan
The AVANTI NORTH Specific Plan is occurring in five phases in response to market demands and a logical and orderly extension of roads, utilities, and infrastructure. The proposed Phasing Plan is shown in Figure II12, Conceptual Phasing Plan. A full range of public services and utilities is required for the development.

On-site facilities, such as water and sewer, parks, roads, and utilities, shall be developed in conjunction with project buildout. Improvements to other services, such as fire, water treatment, and law enforcement are planned and developed by the applicable governing agencies according to their own time frames and master plans. It should be noted that this Phasing Plan is included here to conceptually show how the Specific Plan is envisioned to develop. The exact timing of implementation for any given phase may vary based on a number of factors, including market and economic demands, as well as physical constraints or timing of infrastructure improvements.

1. Phase 1
Phase 1 generally covers the central and northeastern portions of the AVANTI NORTH community and includes residential Planning Areas D and E and the park within Planning Area F. A portion of Avenue K-8 is also constructed as part of this phase. All required community and roadway landscaping, as well as applicable entry monumentation, are installed by the developer of the tract or area served by the associated roads.

2. Phase 2
Phase 2 covers development of the eastern and southeastern portion of the AVANTI NORTH community and includes residential Planning Areas D and E. Portions of Avenue K-8 are also constructed as part of this phase. The associated roads and all necessary utilities will also be constructed.

3. Phase 3
Phase 3 covers development of the central portion of the AVANTI NORTH community and includes residential Planning Area C and Open Space Planning Areas H and I. 65th Street West and a portion of Avenue K-8 are also constructed as part of this phase. The associated roads and all necessary utilities will also be constructed.

4. Phase 4
Phase 4 covers development of the northwestern portion of the AVANTI NORTH community and includes residential Planning Area A and the park within Planning Area G. Portions of Avenue K are also constructed as part of this phase. The associated roads and all necessary utilities will also be constructed.

AVANTI NORTH SPECIFIC PLAN II. Land Use, Infrastructure, and Approach to Development
page II-30

5. Phase 5
Phase 5 covers development of the southwestern portion of the AVANTI NORTH community and includes residential Planning Area B. 70th Street West, a portion of Avenue K-8, and a portion of Avenue K are also constructed as part of this phase. The associated roads and all necessary utilities will also be constructed.

AVANTI NORTH SPECIFIC PLAN III. Planning Area
Development Standards
page III-1
III. PLANNING AREA DEVELOPMENT STANDARDS
This section establishes a list of permitted uses and dimensional standards for development in each planning area. Adherence to the standards will help to ensure that the community builds out as intended and that structures are placed and sized in ways that enhance the quality and character of AVANTI NORTH.

The standards contained herein replace the dimensional standards for development contained in City of Lancaster’s Zoning Code. If a City Zoning Code standard is not replaced or specifically excluded by reference in this section of the Specific Plan, the City’s Zoning Code provision remains applicable.

The Planning Area exhibits contained in this section (Figure III-1 through Figure III-5) were derived from the Specific Plan Land Use Plan (Figure II-1). Notes on these exhibits make reference to relevant exhibits provided in Section IV, Landscape Plan and Guidelines, and Section V, Architectural Theme and Style Guidelines.

Refer to Section II, Land Use, Infrastructure, and Approach to Development, for standards that pertain to the following topics, which apply to every planning area in the Specific Plan.

II.A Specific Plan Land Use Plan II.E Open Space and Recreation Plan II.B Circulation Plan II.F Conceptual Grading Plan
II.C Conceptual Drainage Plan II.G Maintenance Plan
II.D Conceptual Water & Sewer Plans
AVANTI NORTH SPECIFIC PLAN III. Planning Area
Development Standards
page III-2
A. Planning Area A – 5,250 SF Lots

1. Description
Planning Area A is located in the northwest section of AVANTI NORTH. Planning Area A provides for 151 single-family detached homes on 30.5 acres at a target density of 5.0 dwelling units per acre (du/ac). Refer to Figure III-1, Planning Area A. The required minimum lot size is 5,250 sf Homes in Planning Area A may be one story or two stories in height, and each home is required to include an attached garage that accommodates parking for at least two vehicles.

2. Land Use and Development Standards
Zoning requirements for Planning Area A are identified in Table III-1, Planning Area A Development Standards. If a zoning requirement contained in the City of Lancaster Municipal Code is not identified or specifically omitted from the requirements below, the requirements in the Municipal Code shall apply. All development within AVANTI NORTH shall comply with Chapter 15.28 of the Municipal Code, which requires an implementation of solar energy systems in new dwelling units.

Table III-1 Planning Area A Development Standards
Allowed UsesDSingle-family houses on individual lots
Accessory structures/buildings (gazebos, sheds,
etc.) typically associated with a residential home
Swimming pools, spas, and pool equipment
Small family daycare (up to 7 children)
Home occupation/home office
Electric vehicle charging station (EVCS)
Non-commercial solar energy systems, including
building and ground-mounted photo-voltaic (PV)
panels
Real estate sales office in conjunction with new
subdivision
Model homes in conjunction with new subdivision
Lot Specifications
Minimum lot size 5,250 square feet
Minimum lot width – interior lot 45 feet at ROW/50 feet at BSLE Minimum lot width — corner lot 45 feet at ROW/55 feet at BSLE Minimum lot depth 80 feet
Building Placement
Front plane build-to lineA 15 Feet
Required minimum porch depthB 6 feet
Porch encroachment Up to 6 feet beyond front plane build-to line Garage setback 20 feet for front facing garages
15 feet for side facing (turn in) garages
Minimum rear yardC 12 feet
AVANTI NORTH SPECIFIC PLAN III. Planning Area
Development Standards
page III-3
Table III-1 Planning Area A Development Standards
Minimum interior side yardC 5 feet
Minimum interior side yard: sum of two yards 10 feet
Minimum street side yardA 10 feet
Building Size and Massing
Maximum lot coverage 60%
Maximum building height 35 feet
Parking
Minimum number of parking spaces 2 spaces within an enclosed garage A. Accessory structures are not permitted in the front yard or street side yard setbacks.

B. To the satisfaction of the Planning Director, an alternative frontage feature may be provided in lieu of a porch if it achieves the same design intent and variation.

C. Accessory structures may encroach up to 2 feet into the minimum side yard setback and 8 feet into the minimum rear yard setback.

D. Multi-generational units, guest houses, and accessory dwelling units are permitted, in accordance with State law.

E. ROW = Right of Way; BSL = Building Setback Line.

3. Planning Standards
(1) Roadway landscape treatments, as shown in Figure IV-6, 70th Street West Streetscape, shall be provided along 70th Street West.
(2) Roadway landscape treatments, as shown in Figure IV-4, Avenue K Streetscape, shall be provided along West Avenue K.
(3) Roadway landscape treatments, as shown in Figure IV-3, Typical Intersection Roundabout, shall be provided along Intersection Roundabouts.
(4) Roadway landscape treatments, as shown in Figure IV-9, Local Entry Road Streetscape, shall be provided along local entry roads.

AVANTI NORTH SPECIFIC PLAN III. Planning Area
Development Standards
page III-5
B. Planning Area B – 5,500 SF Lots

1. Description
Planning Area B is located in the southwest section of AVANTI NORTH. Planning Area B provides for 153 single-family detached homes on 34.2 acres at a target density of 4.5 du/ac. The required minimum lot size is 5,500 sf Refer to Figure III-2, Planning Area B. Homes within Planning Area B may be one story or two stories in height, and each home is required to include an attached garage that accommodates parking for at least two vehicles.

2. Land Use and Development Standards
Zoning requirements for Planning Area B are identified in Table III-2, Planning Area B Development Standards. If a zoning requirement contained in the City of Lancaster Municipal Code is not identified or specifically omitted from the requirements below, the requirements in the Municipal Code shall apply.

All development within AVANTI NORTH shall comply with Chapter 15.28 of the Municipal Code, which requires an implementation of solar energy systems in new dwelling units.

Table III-2 Planning Area B Development Standards
Allowed UsesDSingle-family houses on individual lots
Accessory structures/buildings (gazebos, sheds,
etc.)
Swimming pools and pool equipment
Small family daycare (up to 7 children)
Home occupation/home office
Electric vehicle charging station (EVCS)
Non-commercial solar energy systems, including
building and ground-mounted photo-voltaic (PV)
panels
Real estate sales office in conjunction with new
subdivision
Model homes in conjunction with new subdivision
Lot Specifications
Minimum lot size 5,500 square feet
Minimum lot width – interior lot 50 feet at ROW/55 feet at BSLE Minimum lot width — corner lot 50 feet at ROW/60 feet at BSLE Minimum lot depth 80 feet
Building Placement
Front plane build-to lineA 15 feet
Required minimum porch depthB 6 feet
Porch encroachment Up to 6 feet beyond front plane build-to line Garage location 20 feet for front facing garages
15 feet for side facing (turn in) garages
Minimum rear yardC 15 feet
AVANTI NORTH SPECIFIC PLAN III. Planning Area
Development Standards
page III-6
Table III-2 Planning Area B Development Standards
Minimum interior side yardC 5 feet
Minimum interior side yard: sum of two yards 10 feet
Minimum street side yardA 10 feet
Building Size and Massing
Maximum lot coverage 60%
Maximum building height 35 feet
Parking
Minimum number of parking spaces 2 spaces within an enclosed garage A. Accessory structures are not permitted in the front yard or street side yard setbacks.

B. To the satisfaction of the Planning Director, an alternative frontage feature may be provided in lieu of a porch if it achieves the same design intent and variation.

C. Accessory structures may encroach up to 2 feet into the minimum side yard setback and 8 feet into the minimum rear yard setback.

D. Multi-generational units, guest houses, and accessory dwelling units are permitted, in accordance with State law.

E. ROW = Right of Way; BSL = Building Setback Line

3. Planning Standards
(1) Roadway landscape treatments, as shown in Figure IV-3, Typical Intersection Roundabout, shall be provided along intersection roundabouts.
(2) Roadway landscape treatments, as shown in Figure IV-5, Avenue K-8 Streetscape, shall be provided along Avenue K-8.
(3) Roadway landscape treatments, as shown in Figure IV-6, 70th Street West Streetscape, shall be provided along 70th Street West.
(4) Roadway landscape treatments, as shown in Figure IV-9, Local Entry Road Streetscape, shall be provided along local entry roads.

AVANTI NORTH SPECIFIC PLAN III. Planning Area
Development Standards
page III-8
C. Planning Area C – 6,000 SF Lots

1. Description
Planning Area C is located in the central section of AVANTI NORTH. Planning Area C provides for 179 singlefamily detached homes on 46.7 acres at a target density of 3.8 du/ac. The required minimum lot size is 6,000 sf Refer to Figure III-3, Planning Area C. Homes within Planning Area C may be one story or two stories in height, and each home is required to include an attached garage that accommodates parking for at least two vehicles.

2. Land Use and Development Standards
Zoning requirements for Planning Area C are identified in Table III-3, Planning Area C Development Standards. If a zoning requirement contained in the City of Lancaster Municipal Code is not identified or specifically omitted from the requirements below, the requirements in the Municipal Code shall apply.

All development within AVANTI NORTH shall comply with Chapter 15.28 of the Municipal Code, which requires an implementation of solar energy systems in new dwelling units.

Table III-3 Planning Area C Development Standards
Allowed UsesESingle-family houses on individual lots
Accessory structures/buildings (gazebos, sheds,
etc.)
Swimming pools and pool equipment
Small family daycare (up to 7 children)
Home occupation/home office
Electric vehicle charging station (EVCS)
Non-commercial solar energy systems, including
building and ground-mounted photo-voltaic (PV)
panels
Real estate sales office in conjunction with new
subdivision
Model homes in conjunction with new subdivision
Lot Specifications
Minimum lot size 6,000 square feet
Minimum lot width – interior lot 55 feet at ROW/60 feet at BSLD Minimum lot width – corner lot 55 feet at ROW/65 feet at BSLD Minimum lot depth 80 feet
Building Placement
Front plane build-to lineA 15 feet
Required minimum porch depthB 6 feet
Porch encroachment Up to 6 feet beyond front plane build-to line Garage location 20 feet for front facing garages
15 feet for side facing (turn in) garages
Minimum rear yardC 15 feet
AVANTI NORTH SPECIFIC PLAN III. Planning Area
Development Standards
page III-9
Table III-3 Planning Area C Development Standards
Minimum interior side yardC 5 feet
Minimum interior side yard: sum of two yardsD 10 feet
Minimum street side yardA 10 feet
Building Size and Massing
Maximum lot coverage 60%
Maximum building height 35 feet
Parking
Minimum number of parking spaces. 2 spaces within an enclosed garage A. Accessory structures are not permitted in the front yard or street side yard setbacks.

B. To the satisfaction of the Planning Director, an alternative frontage feature may be provided in lieu of a porch if it achieves the same design intent and variation.

C. Accessory structures may encroach up to 2 feet into the minimum side yard setback and 8 feet into the minimum rear yard setback.

D. ROW = Right of Way; BSL = Building Setback Line
E. Multi-generational units, guest houses, and accessory dwelling units are permitted, in accordance with State law.

3. Planning Standards
(1) Roadway landscape treatments, as shown in Figure IV-4, West Avenue K Streetscape, shall be provided along West Avenue K.
(2) Roadway landscape treatments, as shown in Figure IV-8, Street A Streetscape, shall be provided along Street A.
(3) Roadway landscape treatments, as shown in Figure IV-9, Local Entry Road Streetscape, shall be provided along local entry roads.

AVANTI NORTH SPECIFIC PLAN III. Planning Area
Development Standards
page III-11
D. Planning Area D – 5,000 and 6,000 SF Lots

1. Description
Planning Area D is located in the northeast section of AVANTI NORTH. Planning Area D provides for 188 single-family detached homes on 41.9 acres at a target density of 4.5 du/ac. Two housing products are provided in Planning Area D, which includes minimum lot sizes of 5,000 sf and 6,000 sf. Refer to Figure III-4, Planning Area D. Homes within Planning Area D may be one story or two stories in height, and each home is required to include an attached garage that accommodates parking for at least two vehicles.

2. Land Use and Development Standards
Zoning requirements for Planning Area D are identified in Table III-4, Planning Area D Development Standards. If a zoning requirement contained in the City of Lancaster Municipal Code is not identified or specifically omitted from the requirements below, the requirements in the Municipal Code shall apply.

All development within AVANTI NORTH shall comply with Chapter 15.28 of the Municipal Code, which requires an implementation of solar energy systems in new dwelling units.

Table III-4 Planning Area D Development Standards
Allowed UsesESingle-family houses on individual lots
Accessory structures/buildings (gazebos, sheds,
etc.)
Swimming pools and pool equipment
Small family daycare (up to 7 children)
Home occupation/home office
Electric vehicle charging station (EVCS)
Non-commercial solar energy systems, including
building and ground-mounted photo-voltaic (PV)
panels
Real estate sales office in conjunction with new
subdivision
Model homes in conjunction with new subdivision
Multi-generational units, guest houses, and
accessory dwelling units
Lot Specifications
Minimum lot size 5,000 square feet
Minimum lot width – interior lot 45 feet at ROW/50 feet at BSLF Minimum lot width — corner lot 45 feet at ROW/55 feet at BSLF Minimum lot depth 80 feet
Minimum lot size 6,000 square feet
Minimum lot width – interior lot 50 feet at ROW/60 feet at BSLF Minimum lot width — corner lot 45 feet at ROW/60 feet at BSLF Minimum lot depth 80 feet
Building Placement
Front plane build-to lineA 15 feet
AVANTI NORTH SPECIFIC PLAN III. Planning Area
Development Standards
page III-12
Table III-4 Planning Area D Development Standards
Required minimum porch depthB 6 feet
Porch encroachment Up to 6 feet beyond front plane build-to line Garage location 20 feet for front facing garages
15 feet for side facing (turn in) garages
Minimum rear yardC 15 feet
Minimum interior side yardC 5 feet
Minimum interior side yard: sum of two yardsD 15 feet
Minimum street side yardA 10 feet
Building Size and Massing
Maximum lot coverage 60%
Maximum building height 35 feet
Parking
Minimum number of parking spaces 2 spaces within an enclosed garage A. Accessory structures are not permitted in the front yard or street side yard setbacks.

B. To the satisfaction of the Planning Director, an alternative frontage feature may be provided in lieu of a porch if it achieves the same design intent and variation.

C. Accessory structures may encroach up to 2 feet into the minimum side yard setback and 8 feet into the minimum rear yard setback.

D. Side yard setbacks adjacent to driveways shall be a minimum of 10 feet.

E. Multi-generational units, guest houses, and accessory dwelling units are permitted, in accordance with State law.

F. ROW = Right of Way; BSL = Building Setback Line

3. Planning Standards
(1) Neighborhood entrance monumentation, as conceptually depicted in Figure IV-1, Community Monumentation Plan View, and Figure IV-2, Community Monumentation Elevation View, shall be provided at key access points to this neighborhood, as shown in Figure III-4. (2) Roadway landscape treatments, as shown in Figure IV-3, Typical Intersection Roundabout, shall be provided along intersection roundabouts.
(3) Roadway landscape treatments, as shown in Figure IV-4, Avenue K Roadway Streetscape, shall be provided along Avenue K.
(4) Roadway landscape treatments, as shown in Figure IV-7, 65hStreet West Streetscape, shall be provided along 65thStreet West.
(5) Roadway landscape treatments, as shown in Figure IV-8, Street A Streetscape, shall be provided along Street A.
(6) Roadway landscape treatments, as shown in Figure IV-9, Local Entry Road Streetscape, shall be provided along local entry roads.

AVANTI NORTH SPECIFIC PLAN III. Planning Area
Development Standards
page III-14
E. Planning Area E – 5,500 and 6,600 SF Lots

1. Description
Planning Area E is located in the southeast section of AVANTI NORTH. Planning Area E provides for 202 single-family detached homes on 48.0 acres at a target density of 4.2 du/ac. Two housing products are provided in Planning Area E, which includes minimum lot sizes of 5,500 sf and 6,600 sf Refer to Figure III5, Planning Area E. Homes within Planning Area E may be one story or two stories in height, and each home is required to include an attached garage that accommodates parking for at least two vehicles.

2. Land Use and Development Standards
Zoning requirements for Planning Area E are identified in Table III-5, Planning Area E Development Standards. If a zoning requirement contained in the City of Lancaster Municipal Code is not identified or specifically omitted from the requirements below, the requirements in the Municipal Code shall apply.

All development within AVANTI NORTH shall comply with Chapter 15.28 of the Municipal Code, which requires an implementation of solar energy systems in new dwelling units.

Table III-5 Planning Area E Development Standards
Allowed UsesESingle-family houses on individual lots
Accessory structures/buildings (gazebos, sheds,
etc.)
Swimming pools and pool equipment
Small family daycare (up to 7 children)
Home occupation/home office
Electric vehicle charging station (EVCS)
Non-commercial solar energy systems, including
building and ground-mounted photo-voltaic (PV)
panels
Real estate sales office in conjunction with new
subdivision
Model homes in conjunction with new subdivision
Multi-generational units, guest houses, and
accessory dwelling units
Lot Specifications
Minimum lot size 5,500 square feet
Minimum lot width – interior lot 45 feet at ROW/50 feet at BSLF Minimum lot width – corner lot 45 feet at ROW/55 feet at BSLF Minimum lot depth 80 feet
Minimum lot size 6,600 square feet
Minimum lot width – interior lot 50 feet at ROW/60 feet at BSLF Minimum lot width – corner lot 35 feet at ROW/60 feet at BSLF Minimum lot depth 80 feet
Building Placement
AVANTI NORTH SPECIFIC PLAN III. Planning Area
Development Standards
page III-15
Table III-5 Planning Area E Development Standards
Front plane build-to lineA 15 feet
Required minimum porch depthB 6 feet
Porch encroachment Up to 6 feet beyond front plane build-to line Garage location 20 feet for front facing garages
15 feet for side facing (turn in) garages
Minimum rear yardC 15 feet
Minimum interior side yardC 5 feet
Minimum interior side yard: sum of two yardsD 15 feet
Minimum street side yardA 10 feet
Building Size and Massing
Maximum lot coverage 60%
Maximum building height 35 feet
Parking
Minimum number of parking spaces 2 spaces within an enclosed garage A. Accessory structures are not permitted in the front yard or street side yard setbacks.

B. To the satisfaction of the Planning Director, an alternative frontage feature may be provided in lieu of a porch if it achieves the same design intent and variation.

C. Accessory structures may encroach up to 2 feet into the minimum side yard setback and 8 feet into the minimum rear yard setback.

D. Side yard setbacks adjacent to driveways shall be a minimum of 10 feet.

E. Multi-generational units, guest houses, and accessory dwelling units are permitted, in accordance with State law.

F. ROW = Right of Way; BSL = Building Setback Line

3. Planning Standards
(1) Neighborhood entrance monumentation, as conceptually depicted in Figure IV-1, Community Monumentation Plan View, and Figure IV-2, Community Monumentation Elevation View, shall be provided at key access points to this neighborhood, as shown in Figure III-4. (2) Roadway landscape treatments, as shown in Figure IV-3, Typical Intersection Roundabout, shall be provided along intersection roundabouts.
(3) Roadway landscape treatments, as shown in Figure IV-5, Avenue K-8 Streetscape, shall be provided along Avenue K-8.
(4) Roadway landscape treatments, as shown in Figure IV-8, Street A Streetscape, shall be provided along Street A.
(5) Roadway landscape treatments, as shown in Figure IV-9, Local Entry Road Streetscape, shall be provided along local entry roads.

AVANTI NORTH SPECIFIC PLAN III. Planning Area
Development Standards
page III-17
F. Planning Area F – 4.2-Acre Park

1. Description
As shown in Figure III-6, Planning Area F, a 4.2-acre public neighborhood park is located in Planning Area F in the eastern section of AVANTI NORTH. This park provides neighborhood-oriented recreational amenities such as a decomposed granite trail, shade trellises, picnic tables, and an open play lawn.

2. Land Use and Development Standards
Zoning requirements for Planning Area F are identified in Table III-6, Planning Area F Development Standards. If a zoning requirement contained in the City of Lancaster Municipal Code is not identified or specifically omitted from the requirements below, the requirements in the Municipal Code shall apply.

Table III-6 Planning Area F Development Standards
Allowed Uses Parks
Accessory structures/buildings (gazebos, shade
structures, etc.) typically associated with a park.

Restrooms
Building Size and Massing
Maximum Building Height 40 feet
Parking
Minimum number of parking spaces Parallel parking around the perimeter of the park is required.

3. Planning Standards
(1) A site plan concept for the park in Planning Area F is provided on Figure IV-12, PA F Park Plan. (2) Roadway landscape treatments, as shown in Figure IV-8, Street A Streetscape, shall be provided along Street A.
(3) Landscaping shall occur as depicted on Figure IV-12, PA F Park Plan. (4) Trails and sidewalks shall be provided as shown on Figure II-6, Pedestrian Circulation Plan. (5) Walls and fences shall be provided as shown on Figure IV-15, Wall and Fence Plan.

AVANTI NORTH SPECIFIC PLAN III. Planning Area
Development Standards
page III-19
G. Planning Area G – 6.0-Acre Park

1. Description
As shown in Figure III-7, Planning Area G, a 6.0-acre neighborhood park located in Planning Area G in the western section of AVANTI NORTH. This park provides neighborhood-oriented recreational amenities such as a perimeter trail, workout stations along the trail, picnic tables, shade trellis, and an open play field.

2. Land Use and Development Standards
Zoning requirements for Planning Area G are identified in Table III-7, Planning Area G Development Standards. If a zoning requirement contained in the City of Lancaster Municipal Code is not identified or specifically omitted from the requirements below, the requirements in the Municipal Code shall apply.

Table III-7 Planning Area G Development Standards
Allowed Uses Parks
Accessory structures/buildings (gazebos, shade
structures, etc.) typically associated with a park.

Restrooms
Building Size and Massing
Maximum Building Height 40 feet
Parking
Minimum number of parking spaces Parallel parking around the perimeter of the park is required.

3. Planning Standards
(1) A site plan concept for the park in Planning Area G is provided on Figure IV-13, PA G Park Plan. (2) Roadway landscape treatments, as shown in Figure IV-8, Street A Streetscape, shall be provided along local entry roads.
(3) Landscaping shall occur as depicted on Figure IV-13, PA G Park Plan. (4) Trails and sidewalks shall be provided as shown on Figure II-6, Pedestrian Circulation Plan. (5) Walls and fences shall be provided as shown on Figure IV-15, Wall and Fence Plan.

AVANTI NORTH SPECIFIC PLAN III. Planning Area
Development Standards
page III-21
H. Planning Areas H and I – Open Space

1. Description
As shown on Figure III-8, Planning Areas H and I, two open space areasthat serve as storm water detention basins are located in Planning Area H (5.0 acres) and Planning Area I (5.4 acres). Storm water flows generated from within the community are conveyed to Planning Areas H and I via the community’s storm drain system and are temporarily detained during peak storm events before being discharged off-site (See Section II.C, Conceptual Drainage Plan, for additional information.) Landscaping is provided along the perimeter of Planning Areas H and I and a meandering trail is provided around the perimeter of the basins as a recreational amenity.

2. Land Use and Development Standards
Zoning requirements for Planning Areas H and I are identified in Table III-8, Planning Areas H and I Development Standards. If a zoning requirement contained in the City of Lancaster Municipal Code is not identified or specifically omitted from the requirements below, the requirements in the Municipal Code shall apply.

Table III-8 Planning Areas H and I Development Standards Allowed Uses Storm water detention basins
Accessory structures/buildings (gazebos, sheds,
etc.)
Trails

3. Planning Standards
(1) Roadway landscape treatments, as shown in Figure IV-3, Typical Intersection Roundabout, shall be provided along intersection roundabouts.
(2) Roadway landscape treatments, as shown in Figure IV-5, Avenue K-8 Roadway Streetscapes, shall be provided along Avenue K-8.
(3) Roadway landscape treatments, as shown in Figure IV-7, 65th Street West Streetscape, shall be provided along 65th Street West.
(4) Roadway landscape treatments, as shown in Figure IV-8, Street A Streetscape, shall be provided along Street A.
(5) Landscaping shall occur as depicted in Figure IV-14, Detention Basin Landscaping.

AVANTI NORTH SPECIFIC PLAN IV. Landscape Plan and Guidelines page IV-1
IV. LANDSCAPE PLAN AND GUIDELINES
A. Introduction

1. Purpose and Intent
The AVANTI NORTH Landscape Plan and Guidelines address the community’s landscape theme. Guidelines are presented for the placement and design of entry monuments, fencing, and landscaping within roadway rights-of-way, easements, neighborhood parks, and the open space/detention basin areas. Due to the climatic conditions of the high-desert area, the guidelines encourage drought tolerant and minimal water usage plants.

2. Summary
An aesthetically cohesive landscape design reinforces the community’s identity and visual character. The landscaping complements the physical setting of Lancaster through the use of lush, colorful, waterefficient plants and trees planted at focal points throughout AVANTI NORTH. The landscaping design is implemented through major thematic community elements listed below and discussed in more detail on the following pages.
❑ Community Entries and Monuments ❑ Recreational Amenities ❑ Plant Palette ❑ Detention Basins
❑ Community Roadway Landscaping ❑ Walls and Fencing
The information presented in this section is instructive and not prescriptive. The guidelines can be interpreted and applied with creativity to create visual interest and meet City and project proponent goals. However, it is critical that such flexibilities are consistent with the core elements of the overall theme described herein to ensure a cohesive community-wide landscape concept.

B. Community Entries & Monuments
Identification of AVANTI NORTH is provided by monuments located at the roundabout where 65thStreet West and Street A intersect. As shown on Figure IV-1, Community Monumentation – Plan View, 6-foot wide flagstone sign walls are located on the northern corners of the intersection. A Corten steel sign with the community’s name is located on the walls, as shown in Figure IV-2, Community Monumentation – Elevation View. Two-foot high stone accent walls are located within the roundabout and at the corners of the intersection.

AVANTI NORTH SPECIFIC PLAN IV. Landscape Plan and Guidelines page IV-4
C. Plant Palette
The Plant Palette for AVANTI NORTH was selected to complement and enhance the setting of the community, while ensuring the conservation of water resources. The Plant Palette accentuate the community’s architectural styles and design elements (hardscape, monumentation, walls and fences, etc.).

To ensure the conservation of water resources and to alleviate long-term maintenance concerns, the Plant Palette for AVANTI NORTH is comprised of water-efficient species native to southern California or naturalized to the arid southern California climate.

Table IV-1, Community Plant Palette, provides a base plant palette for the AVANTI NORTH community’s landscape design. Other similar plant materials may be substituted provided the selected plant materials are water-efficient and complement the AVANTI NORTH community theme. Plant selection for specific areas of the community shall have similar watering requirements so that irrigation systems can be designed to minimize water use and plant materials can thrive under optimal conditions.

Table IV-1 Community Plant Palette

CACTUS & SUCCULENTS
Scientific Common Name R C L ST PT W Water Use
R-Residential, C-Commercial, Institutional, Industrial, ST-Street Tree, L-Landscape District, PT-Plant Type, W-Plant Width
Agave colorata Mescal Agave X X H 2 VL
Agave parryi 'Compacta
Variegata'
Dwarf Variegated
Artichoke Agave X X H 2 VL
Dasylirion wheeleri Desert Spoon X X E 3 L
Hesperaloe funifera Coahuilan Hesperaloe X X E 3 L
Hesperaloe parviflora Red/Yellow Yucca X X E 2 L
Yucca baccata Datil Yucca X X E 4 L
Yucca schidigera Mohave Yucca X X E 2 L

GROUND COVERS
Baccharis pilularis Coyote Brush X X
Cotoneaster 'Lowfast' X X D 5 L
Rosmarinus prostratus Creeping Rosemary X X

ORNAMENTAL GRASS
Muhlenbergia capillaris Pink Muhly X X H 3 L
Muhlenbergia rigens Deer Grass X X H 3 L
PALMS
Chamaerops humilis
Mediterranean Fan
Palm X E 8 L
AVANTI NORTH SPECIFIC PLAN IV. Landscape Plan and Guidelines page IV-5
Table IV-1 Community Plant Palette
Chamaerops humilis V.
cerifera
Morrocan Blue Fan
Palm X E 8 L

SHRUBS AND GROUNDCOVER
Baccharis pilularis 'Twin
Peaks' Coyote Bush Prostrate X X E 5 L
Caesalpinia gilliesii Desert Bird-of-Paradise X X D 8 VL Cistus spp Rockrose X X E 5 L
Cotoneaster dammeri Bearberry Cotoneaster X X D 5 M
Dalea frutescens 'Sierra
Negra' Black Dalea X X E 4 L
Elaeagnus pungens
'Marginata'
Silver-Edged
Silverberry X X E 6 L
Encelia farinosa Desert Encelia X X D 2 L
Fallugia paradoxa Apache Plume X X E 4 VL
Heteromeles arbutifolia Toyo, Christmas Berry,
California Holly
X X E 6 VL
Ilex vomitoria 'Nana' Dwarf Yaupon X X E 2 L
Juniperus californica California Juniper X X C 8 VL
Juniperus chinensis
'Columnaris' Blue Point Juniper X X C 4 L
Lagerstroemia indica 'Cvs' Crape Myrtle X X D 8 M
Leucophyllum frutescen
'Alba' Texas Ranger X X E 5 VL
Leucophyllum frutescen
'Compacta' Texas Ranger X X E 4 VL
Leucophyllum frutesen
'Green Cloud' Texas Ranger X X E 5 VL
Leucophyllum frutesen
'Silver Cloud' Texas Ranger X X E 5 VL
Olea europaea 'Skylark
Dwarf' Dwarf Olive X X E 10 L
Punica granatum 'Nana' Dwarf Pomegrante X X D 2 L
Pyracantha coccinea
'Lalandei' Firethorn X X E 8 M
Pyracantha 'Santa Cruz' Santa Cruz Firethorn X X E 5 M
Rhus ovata Sugar Bush X X E 5 L
Rosmarinus officinalis Rosemary X X E 4 L
Rosmarinus officinalis
'Prostratus' Trailing Rosemary X X E 4 L
Salvia clevelandii Cleveland Sage X X E 4 M
Salvia greggii Autumn Sage X X E 2 L
Yucca Yucca X
AVANTI NORTH SPECIFIC PLAN IV. Landscape Plan and Guidelines page IV-6
TREES
Scientific Common Name R C L ST PT W Water Use
R-Residential, C-Commercial, Institutional, Industrial, ST-Street Tree, L-Landscape District, PTPlant Type, W-Plant Width Acacia stenophyll Shoestring Acacia X X E 20 L
Albizia julibrissin Silk Tree, Mimosa X X D 25 L
Cercidium desert
'Museum' Hybrid Palo Verde X X D 15 L
Chilopsis linearis 'Art's
Seedless' Desert Willow X X D 15 L
Cotinus coggygria 'Cvs' Purple Smoke Tree X X D 12 L
Fraxinus oxycarpa
'Raywood'
Raywood Ash (Claret
Ash) X X X D 20 M
Gleditsia triacanthos Honey Locust X X X D 40 L
Juniperus californica California Juniper X
Olea europaea 'Swan Hill' Swan Hill Olive X X E 15 VL
Parkinsonia aculeata Mexican Palo Verde X X D 15 L
Pinus eldarica Eldarica Pine X X C 20 L
Pinus halepensis 'Brutia' Aleppo Pine X X C 20 L
Pistacia chinensis Chinese Pistache X X X D 30 L
Prosopis phoenix Thornless Mesquite X X D 30 L
Prosopis glandulosa
'Torreyana' Mesquite X X D 30 L
Quercus buckleyi Spanish Oak X D 20 L
Quercus ilex Holly Oak X X E 20 L
Quercus virginiana Southern Live Oak X X D 20 M
X Chitalpa tashkentensis Chitalpa X X X D 20 L
D. Community Roadway Landscaping
Streetscape design within AVANTI NORTH enforces a circulation hierarchy, creates a sense of place, and facilitates a walkable community. Landscape treatments include sidewalks, parkway trees, and center medians to enhance the roadways. Landscaping in streetscapes consists of drought-tolerant plants, colorful shrubs, and street trees. In all instances, a line-of-sight for entering/exiting vehicles shall be maintained at street intersections.

AVANTI NORTH provides for five roundabouts located along Avenue K in the northern and northwestern portions of the community at 65th Street West and 70th Street West; 65th Street West in the central and southern portions of the community at Street A and Avenue K-8; and Avenue K-8 in the southwestern AVANTI NORTH SPECIFIC PLAN IV. Landscape Plan and Guidelines page IV-7
portion of the community at 70th Street West. The roundabouts at the intersections of Avenue K/70th Street West, 65th Street West/Avenue K, Avenue K-8/65th Street West, and Avenue K-8/70th Street West are designed to be approximately 90 feet in diameter with a 64-foot diameter central island, as shown in Figure IV-3, Typical Intersection Roundabout. The roundabout at the intersection of 65th Street West/Street “A” is designed to be approximately 66 feet in diameter with a 40-foot diameter central island. The central islands of each roundabout are planted with the same trees found within the roadway medians of AVANTI NORTH. In addition, 2-foot high flagstone accent walls are located within the islands and the corners of the intersections.

1. Avenue K (100’ ROW)
Avenue K is located along the northern boundary of AVANTI NORTH. As depicted on Figure IV-4, Avenue K Roadway Streetscape, this roadway contains a 100-foot-wide right-of-way with a 14-foot wide landscaped center median, two 13-foot wide travel lanes, two 7-foot wide bike lanes, a landscaped parkway that ranges from 11 to 15 feet in width, an 8-foot wide sidewalk on both sides of the street, and two 4-foot landscaped parkways between the sidewalk and landscape easement, and is planted with evergreen trees and street trees with groundcover. A minimum 6-foot tall community theme wall separates the roadway from adjacent residential land uses at the edge of the landscaped easement on the south side of the street.

2. Avenue K-8 (68’ ROW)
Avenue K-8 is located along the southern boundary of AVANTI NORTH. As shown on Figure IV-5, Avenue K8 Roadway Streetscape, this roadway contains an 68-foot wide right-of-way with two 11-foot wide travel lanes, two 7-foot wide bike lanes, a 6-foot wide landscaped parkway on both sides of the street, and a 6- foot wide meandering sidewalk and a 4-foot wide meandering landscaped parkway between the sidewalk and landscaped easement on both sides of the street. A 14-foot wide landscaped easement adjacent to the landscaped parkways on both sides of the streets and is maintained by LMD is planted with evergreen trees and street trees with groundcover.

3. 70th Street West (100’ ROW)
70th Street West forms the western boundary of AVANTI NORTH. As shown on Figure IV-6, 70th Street West Streetscape, this roadway contains a 100-foot wide right-of-way with a 14-foot wide landscaped center median, an 8-foot wide landscaped parkway, 12-foot wide bike path, and a 3-foot wide landscaped parkway within the right-of-way east of the street. A 27-foot wide landscaped easement maintained by LMD is located adjacent to the sidewalk on the east side of the street, planted with evergreen trees and street trees with groundcover. The 27-foot landscaped easement on the east side of 70th Street West consists of a 3-foot wide landscaped parkway, and a 12-foot wide equestrian trail, and a 12-foot wide landscaped parkway east of the equestrian trail. The 23-foot wide right-of-way and adjacent 27-foot wide landscape easement area west of the street is reserved for future improvements. A minimum 6-foot tall AVANTI NORTH SPECIFIC PLAN IV. Landscape Plan and Guidelines page IV-8
community theme wall separates the roadway from adjacent residential land uses in Planning Areas A and B at the edge of the landscaped easement on the east side of the street.

4. 65th Street West (84’ ROW)
65th Street West traverses the center AVANTI NORTH in a north/south alignment and is an important thematic corridor. This roadway contains an 84-foot wide right-of-way with a 14-foot-wide landscaped center median. An expanded 25-foot wide streetscape is provided on both sides of the street, of which 15 feet occur within the right-of-way and additional 10 feet occur in an adjacent landscaped easement maintained by a LMD. Within the 25-foot foot wide area is a 6-foot wide meandering walkway, a landscaped parkway that ranges from 5 to 9 feet in width between the curb and meandering sidewalk, and a landscaped parkway that ranges from 0 to 4 feet in width between the meandering sidewalk and landscape easement. A minimum 6-foot tall community theme wall separates the roadway from adjacent residential land uses at the edge of the landscaped easement on the east side of the street. Open space abuts the west side of the street.

5. Street A (80’ ROW)
Street A intersects with 65th Street West in a roundabout configuration and provides direct access and a view corridor to the neighborhood parks in Planning Areas F and G. As shown on Figure IV-8, Street “A” Streetscape, this roadway contains an 80-foot-wide right-of-way with two 24-foot wide travel lanes, a 16- foot wide, curb-adjacent parkway containing a meandering 6-foot wide sidewalk and two 5-foot landscaped parkways on both sides of the street. The parkways are planted with street trees and groundcover. A minimum 6-foot tall community theme wall separates the roadway from adjacent residential land uses in Planning Areas C, D, and E at the edge of the landscaped parkway on both sides of the street.

6. Local Entry Road (70’ ROW)
Local Entry Roads provide access into AVANTI NORTH neighborhoods from Avenue K to the north, 70th Street West to the west, Avenue K-8 to the south, and 65th Street West. As shown on Figure IV-9, Local Entry Road Streetscape, this roadway type features a 70-foot wide right-of-way with one 13-foot wide travel lane in each direction, and 22-foot wide parkways containing a 6-foot wide meandering sidewalk and two 8-foot landscaped parkways on both sides of the street. The parkways are planted with street trees and groundcover. A minimum 6-foot tall community theme wall separates the roadway from adjacent residential land uses at the edge of the landscaped parkway on both sides of the street.

7. Local Road (60’ ROW)
Local Roads are provided throughout the AVANTI NORTH’s residential planning areas and constitute local roads that are not cul-de-sacs and not considered to be entry roads. This roadway type features a 60-foot wide right-of-way with 12-foot wide parkways, including 5.5-foot wide sidewalks and 6.5 foot landscaped AVANTI NORTH SPECIFIC PLAN IV. Landscape Plan and Guidelines page IV-9
parkways on both sides of the street. As depicted on Figure IV-10, Local Road Streetscape, parkways within sloped areas have curb-adjacent sidewalks and parkways not within sloped areas have curbadjacent parkways.

8. Cul-de-Sac Local Road (58’ ROW)
Cul-de-Sac Local Roads are local roads within the AVANTI NORTH residential planning areas that end in a cul-de-sac. This roadway type features a 58-foot wide right-of-way with 12-foot wide parkways, including

5.5-foot wide sidewalks and 6.5-foot wide landscaped parkways on both sides of the street. As shown on Figure IV-11, Cul-de-Sac Local Road Streetscape, parkways within sloped areas have curb-adjacent sidewalks and parkways not within sloped areas shall have curb-adjacent parkways. Most of the cul-desacs within AVANTI NORTH include a pedestrian pathway that links the street to either neighboring streets or trails alongside the open space. These pedestrian pathways include concrete paving with plant material consistent with the surrounding streets.

AVANTI NORTH SPECIFIC PLAN IV. Landscape Plan and Guidelines page IV-19
E. Neighborhood Parks
AVANTI NORTH includes two public neighborhood parks to provide neighborhood-level recreational amenities, as described below.

1. Planning Area F
A conceptual design of the 4.2-acre neighborhood park in Planning Area F is depicted on Figure IV-12, PA F Park Plan. This park is designed to include an open lawn play area, picnic tables, shade trellises, boulder garden, natural planting area, and 5-foot wide decomposed granite trails with workout stations around the open lawn play area, connecting residents to park amenities. Large evergreen trees, colorful flowering trees, shade trees, and groundcover shall be planted throughout this neighborhood park to reinforce the community’s landscape theme.

2. Planning Area G
A conceptual design of the 6.0-acre neighborhood park in Planning Area G is shown on Figure IV-13, PA G Park Plan. This park is designed to include an open lawn play area, picnic tables, shade trellises, and a five-foot wide decomposed granite trail around the open play lawn area with ten workout stations located along the trail. A dry wash landscape decorated with boulders is located beneath large evergreen trees, colorful flowering trees, and shade trees that reinforce the community’s landscape theme. A horizontal concrete walk connects the eastern central portion of the park with the open lawn play field.

F. Open Space/Detention Basins
Two detention basins totaling 10.4 acres are located within Planning Areas H and I, west of and adjacent to 65th West Street. As depicted on Figure IV-14, Detention Basin Landscaping, landscaping in the detention basin areas recreates the appearance of a natural dry creek with sparse trees and shrubs near the perimeter.

The design of this area provides an aesthetic and passive recreational amenity for residents and guests of AVANTI NORTH. Five-foot wide trails are provided around the perimeter of the detention basins and connect to the street-adjacent sidewalks. Residential neighborhoods located adjacent to the detention basins (Planning Areas B and C) feature pedestrian connections that extend from local road cul-de-sacs and connect to the trails adjacent the detention basins. A 17-foot wide maintenance and pedestrian access lane is provided between the residential lots and detention basins. A 6-foot tall perimeter wall is designed along the perimeter of the maintenance and pedestrian access lane to separate the access lane and residential lots. A three strand cable fence is designed along the perimeter of the detention basins to separate the access lanes and the basins. A 10-foot wide HOA Landscape Easement is provided between the cable fence and 65th Street West right-of-way.

AVANTI NORTH SPECIFIC PLAN IV. Landscape Plan and Guidelines page IV-23
G. Walls & Fencing
Walls and fences in AVANTI NORTH are predominantly located around the perimeters of each residential neighborhood that interfaces with roads, parks, detention basins, and off-site land uses, as illustrated on Figure IV-15, Wall and Fence Plan. Walls and fencing shall be designed to create a sense of community space, increase privacy and security, provide noise attenuation, and act as a buffer between neighborhoods and different land uses.

The walls and fencing within AVANTI NORTH are major visual elements that are carefully designed to complement the community’s overall aesthetic theme. A strong cohesive appearance is achieved through the use of “community walls” and general overall wall guidelines. The walls and fencing are designed for easy maintenance and to provide a durable, long-term edge. Community walls and fences shall be an integral component and extension of the building design and surrounding landscape. Periphery walls can be integrated into adjacent structures and extended into the landscape to help integrate the building into its environment. Gates should be complementary in style and color to its fence or wall. Similarly, walls and fences shall be constructed of materials, colors, and textures that are similar and harmonious with the architecture. Particular importance is given to railing and cap details. Variety in materials, design, and height is encouraged.

The four general types of walls and fencing used within AVANTI NORTH are described below and conceptually depicted on Figure IV-16, Wall and Fence Details.  Community Theme Wall: The Community Theme Wall is a minimum 6-foot tall slump block wall with slump block cap. A slump block pilaster with slump block cap is provided at the ends of walls and where walls change direction. This wall is designed to reinforce the overall community theme and is used at the rear and sides of yards backing onto roadways to provide privacy and noise attenuation from the main roadways.  Vinyl-Coated Wood Fence: Vinyl-coated wood fencing is provided at the rear and sides of yards abutting residential lots. Vinyl-coated wood fencing is 6-feet in height and features 6-inch wide panels. The color finish of the vinyl-coated wood fence should complement the community’s design theme.
 Tubular Steel View Fence: Tubular Steel View Fencing is a minimum 5 feet in height and is provided around the perimeter of the detention basins within Planning Areas H and I to preserve the views of the basins while maintaining security. A slump block pilaster with slump block cap is provided at the ends of walls and where walls change direction.  Stone Bridge Wall with Wood Rail Fence: The Stone Bridge Wall and Wood Rail Fence are 3-feet in height and feature 30-feet wide intervals of Wood Rail Fence between 8-inch by 8-inch posts. An 8-foot high stone pilaster with a craftsman-inspired wall-mounted lantern is provided at the ends of the Wood Rail Fence. This wall is designed to reinforce the overall community theme and is used at the perimeters of the detention basins which abut local roads to provide residents with safety from the detention basins.

AVANTI NORTH SPECIFIC PLAN V. Architectural Theme
and Style Guidelines
page V-1
V. ARCHITECTURAL THEME AND STYLE GUIDELINES
A. Purpose and Theme

1. Purpose
The purpose of these design guidelines is to ensure a continuity of design such that the community is unified by a consistent and long-lasting identity. The goal is to create a high standard of architectural and landscaping quality but to do so with a generalized approach so that designer creativity is not limited, product diversity is encouraged, and evolving consumer preferences can be met. It is further intended that all aspects of the community be designed with consideration to energy and water conservation.

Each of the 6 residential Planning Areas within AVANTI NORTH will have its own unique building program which will naturally generate variety in terms of floor plan, architectural style, house width, house size, and price point. These design guidelines will further ensure the development of a high quality and high diverse community.

2. Theme
The theme for Avanti North will be an updated interpretation of traditional California suburban design.

This theme is general enough to include a wide range of compatible architectural styles. As such, the resulting community will feature a diversity of house product reminiscent of traditional neighborhoods that stand the test of time. The feel of the community will be warm, inviting, and recognizable. Entry monumentation, theme walls, and landscaping will reinforce the traditional theme.

B. Site Planning and Design
This section includes design guidelines for architecture and the siting of houses on lots to encourage varied appearances among individual houses and visually interesting street scenes.

1. Variation Requirements
To meet home buyer demands for choice and variety and to ensure a visually diverse community, a range of dwelling unit sizes, floor plans, elevations, and unit sizes shall be provided in AVANTI NORTH. Every residential planning area shall provide a minimum of three floor plans and three architectural styles per floor plan. At least one of the floor plans for each planning area shall be single-story. Reversed floor plans may count towards meeting this requirement.

AVANTI NORTH SPECIFIC PLAN V. Architectural Theme
and Style Guidelines
page V-2

2. Plotting Requirements
To encourage a diverse street scene, neither the same floor plan nor the same elevation style shall be plotted next to itself or directly across the street from itself. “Directly across the street” shall be defined as more than half of the narrower lot overlapping with the wider lot across the street. (1) Unless a street incline prevents otherwise, a left or right side garage may not be plotted more than three times in a row.
(2) Repetitive patterns of garage placement shall be avoided. (3) Single-story or recessed living area elements shall be placed on street corners where feasible.

C. Architectural Design
The following architectural design guidelines are illustrative and intended to be flexible to allow architects and home builders to tailor the architectural styles and features to meet homeowner demands and preferences. It is not the intent of these guidelines to require that all of the identified design components and elements described herein be incorporated into the actual building designs. These guidelines serve as a “palette” of character-defining elements that can be used in home designs. Builders and their architects are encouraged to use the information provided herein as guidance related to the intended architectural character of AVANTI NORTH when developing architectural plans for implementation.

1. Design Principals
While these design guidelines do not limit architectural styles, the styles employed in AVANTI NORTH should be authentic and distinct to a recognizable architectural style or combination of styles. Traditional styles tend to have defining features that should be consistently implemented across the product offering.

These guidelines also allow for new styles as long as defining features can be identified and applied to the floor plans.

Architectural styles should be dictated by the massing of floor plans and a certain style should not be forced onto every floor plan. By emphasizing recognizable styles, these guidelines discourage sameness and monotony. The multi-style street scene should be diverse as to form, massing, features, windows, front doors, garage doors, materials, and colors.

2. Form and Massing
Building mass and scale are two primary design components that affect the perception of a structure’s size. Controlling the mass of a building through articulation of the building facades, attention to rooflines, and variation in vertical and horizontal planes reduces the visual mass of a building.

AVANTI NORTH SPECIFIC PLAN V. Architectural Theme
and Style Guidelines
page V-3
To achieve visual interest and allow homes to appear varied along the streetscape, there should be variation in the building massing visible from the street. This is to be achieved by varied building plane setbacks and architectural styles along neighborhood streets. Composition and balance of roof forms also is important to street scene variety. Houses are to be arranged in a manner that creates a harmonious, varied appearance of building rooflines, heights, and setbacks.

Figure V-1 Varied Massing Diagram
Special design features such as covered front porches, window and door articulation, extended overhangs and building edge treatments are encouraged. General massing should vary noticeably among the different floor plans. Together with variable setbacks, massing variation creates visually appealing and desirable street scenes.
(1) All four sides of a two-story house shall have at least one plane break at the first and/or second story in order to avoid monolithic elevations. A plane break must be at least 2 feet. (2) Three sides of a single-story plan must have at least one plane break. A plane break must be at least 2 feet.
(3) At least one of the floor plans offered in each planning area shall be a single-story plan. (4) The floor area of a second story, including the stairs, shall not exceed 80% of the floor area of the first story including the garage and any porch.

AVANTI NORTH SPECIFIC PLAN V. Architectural Theme
and Style Guidelines
page V-4
Figure V-2 Example of Offsets
Two-Story Offset One-Story Offset

3. Roofs
Rows of homes are perceived by their contrast against the skyline or background. The dominant impact is the shape of the building and roofline. The building mass shall be varied (see Figure IV-3) to minimize the visual impact of similar building silhouettes and similar ridge heights. This can be achieved by using a variety of front-to-rear, side-to-side, gables and hipped roofs, and/or by the introduction of a one-story element
(1) Roof pitches should vary according to architectural style. Primary roof pitches may be 4:12 or 5:12 (for solar panel efficiency). Secondary roof pitches can vary from primary roof pitches but only if such variation is consistent with the architectural style. (2) To the extent they are not inconsistent with an architectural style, hipped roofs are encouraged in order to accommodate solar panels and to cast shade over windows. (3) Simplified rooflines are encouraged in order to accommodate integrated solar panels. Provide large enough unbroken roof planes to be sufficient to meet the state code for “solar zones”. (4) Eave depths should vary according to architectural style and may range in depth from 12” to 24”. (5) Porches and balconies are encouraged to the extent they are consistent with the architectural style. The minimum porch depth shall be 5 feet.

AVANTI NORTH SPECIFIC PLAN V. Architectural Theme
and Style Guidelines
page V-5
Figure V-3 Varied Roof Examples

4. Garage Location and Design
The visual impact of three-car garages as seen from the road network should be reduced where possible.

Although not necessarily depicted on the architectural elevations (see Section IV.D.3, Architectural Styles), the builder(s) in AVANTI NORTH are encouraged to pay particular attention to the design, placement, and orientation of the garages in all residential neighborhoods. Depending upon lot size, this shall be accomplished through a variety of methods, including:
(1) Side-on orientation (a side-on garage shall have a minimum back-up area of 28-feet). (2) Garage setback greater than the house front setback. (3) Tandem garages for third car.
(4) A porte-cochere architectural element.
(5) Garage door details should vary in a manner that is consistent with each architectural style. (6) Front-facing garages shall not be wider than 65% of the house width. (7) Exclusive use of three-car front-facing garage in all plans is prohibited. When a 3-car front-facing garage is utilized, a single garage door should be offset from a double garage door.

5. Architectural Elements
Architectural styles for AVANTI NORTH should be chosen in part as an opportunity to introduce a variety of exterior accent materials (e.g. brick, stone, siding, metal, pre-cast concrete, ceramic tile, timber). (1) Color schemes should be simple, tasteful, and consistent with architectural styles. (2) Front door details should vary according to architectural style.

AVANTI NORTH SPECIFIC PLAN V. Architectural Theme
and Style Guidelines
page V-6
(3) Feature window shapes should vary according to architectural style. (4) Acceptable roof materials include concrete tiles and metal, but exclude composite shingle. (5) Chimneys, which may cast shadows over solar panels, are not required. (6) At least two photosensitive carriage lights per house are required and they should vary according to architectural style.
(7) Shutters are not required; but to the extent they are used, shutter sizes should be proportional to the window and shutter styles should vary in a manner consistent with architectural styles. (8) Trim details from the front elevation should also be applied to the sides and rear of the house for continuity.
(9) Exterior building materials and surface coatings that resist sun damage and color fading are encouraged.

6. Mechanical Equipment
Mechanical equipment such as air conditions, heaters, evaporative coolers, and other such HVAC devices shall not be mounted on any roof and must be located at ground level behind privacy walls or landscape.

Solar systems shall be permitted on rooftops.

AVANTI NORTH SPECIFIC PLAN V. Architectural Theme
and Style Guidelines
page V-7
D. Architectural Styles

1. Architectural Styles
The residential architecture of AVANTI NORTH will reflect a variety of architectural themes and styles prevalent in Southern California. The identified architectural elements and details for each style provide guidance but are not necessarily required for a given style. It is not practical to describe every allowable detail consistent with a style. These are guidelines – not an instruction manual. Contemporary interpretations of historical styles are appropriate.

Architectural design creativity, attention to detail, and respect of the building’s scale and massing along residential streets are to be at a level equal to or exceeding the homes and neighborhoods within the surrounding communities.

The following is a list of example architectural styles along with some defining characteristics of those styles. The list is not intended to be exhaustive or limiting. Rather it is intended to demonstrate that acceptable styles shall have some historical authenticity that can be defined by a unique set of characteristics.

The characteristics shown below are only representative because an authentic style can have several interpretations. The only requirement is that definable architectural styles be utilized so that elevations are identifiable, and the street scene is diverse. Generic architecture that lacks identifiable characteristics and blends together is not acceptable.

Example styles:
❑ French Country
❑ Craftsman
❑ European Manor
❑ Italian
❑ Spanish
❑ Monterey
❑ Traditional
❑ Tuscan
AVANTI NORTH SPECIFIC PLAN V. Architectural Theme
and Style Guidelines
page V-8
French Country
French Country is picturesque style from the early 20th century that recalls a more rustic French vernacular. Designs for these homes reflect the evolution of their rural setting (part farmhouse and part chateau).
❑ Stacked ledge stone or brick façade base
❑ Feature windows with a horizontal or
a flat-arch top
❑ Front porch with wood posts and arched
braces
❑ Steeper roof pitch with combination of
hips and gables (dominant gable or hip
roof)
AVANTI NORTH SPECIFIC PLAN V. Architectural Theme
and Style Guidelines
page V-9
Craftsman
This style has its historical roots in Southern California and spread throughout the country by pattern books and popular magazines during the early decades of the 20th century. Craftsman specific attributes relate to the home’s climate, native materials, indoor/outdoor living, and honest character styles.
❑ Low pitched (5:12), front gabled roof with
wider overhangs and flat roof tile; higher
pitched roofs acceptable on single-story
homes
❑ Cross-gabled, side-gabled and hipped
roofs also appropriate
❑ Decorative beams or braces under gables
❑ Siding or distinguishable vent details in
gable ends
❑ River rock applications historically typical
and preferred as base details at porches;
additionally tapered or double wood post
columns signature elements for this
style; but brick is acceptable
❑ Exterior walls can be enhanced with a
shingle or siding application; all stucco
solutions are acceptable
❑ Expressive window and door trims
AVANTI NORTH SPECIFIC PLAN V. Architectural Theme
and Style Guidelines
page V-10
AVANTI NORTH SPECIFIC PLAN V. Architectural Theme
and Style Guidelines
page V-11
European Manor
The European Manor is a more formal, classical version of the European Country evoking the manicured estates of the European aristocracy.
❑ Grouted stone façade
❑ Flat arches typify entry, porch and
feature windows
❑ Steeper roof pitch (5:12 to 6:12),
predominantly hipped with crownboxed eaves
❑ Iron railings and balconies
AVANTI NORTH SPECIFIC PLAN V. Architectural Theme
and Style Guidelines
page V-12
Italian
The Italian or Villa homes reflect more symmetrical, square forms with enduring southern European influences allowing a variety of massing and detail opportunities. Typically they are 2-story with vertical massing.
❑ Low pitched, hipped roof with wide eaves
❑ Boxed-crown or conventional fascia are
both appropriate
❑ S-tile is common but flat tile is acceptable
❑ Flat or full arches at entries, porches, and
accent windows
❑ Smaller upper level windows
❑ Stucco exteriors with accent ironwork
and/or pre-cast concrete features
❑ Optional columns at porches and/or
balconies add formality
❑ Can be traditional or progressive
AVANTI NORTH SPECIFIC PLAN V. Architectural Theme
and Style Guidelines
page V-13
Spanish
The Spanish style evolved in California as an adaptation of Mission Revival influences, infused with additional eclectic elements and details from Latin America and Spain. From formal adaptations to informal solutions, this style remains one the most recognizable. ❑ Low pitched, S-tile roof
❑ Eave overhangs with any combination of
hipped and gabled roofs
❑ Full arches at entry, porch, and/or
feature windows common (Not required
for Hacienda Style)
❑ Typically all stucco walls
❑ Iron accent details at small feature
windows and/or exterior railing
❑ Accent tiles can be provided as entry
surrounds or feature window surrounds
❑ Appropriate detail at gable ends such as
decorative pipes, vents, or outlookers
❑ Santa Barbara is more formal version
with splayed or compound arches
❑ Hacienda is more casual version with
wood headers, corbels, and posts
Hacienda
AVANTI NORTH SPECIFIC PLAN V. Architectural Theme
and Style Guidelines
page V-14
Monterey
The Monterey style emanated from the Monterey Peninsula in the late 19th century by mixing East Coast Colonial architecture with the Spanish-influenced architecture of California. ❑ Two-story massing
❑ Useable balconies at front elevation with
wood railing/pickets preferred solution;
adaptations of this detail encouraged for
variety
❑ Rafter tails
❑ Flat or ‘s’ roof tiles
❑ Front to back primary roof with
expressed outlookers at gable ends
❑ Brick or stone application with vertical
or horizontal (board & batt) siding
❑ All stucco applications acceptable if
contributing details provided
AVANTI NORTH SPECIFIC PLAN V. Architectural Theme
and Style Guidelines
page V-15
Traditional
The Traditional style evolved in the early twentieth century exemplified by classic “Americana” or colonial influences. This style is quite adaptable to its surroundings and fits well within a style diverse street scene.

Warm and comfortable, its simplicity of form and structure promote a true sense of Americana. ❑ Horizontal and/or vertical massing
❑ Roofs can be hipped and/or gabled with
steeper pitches
❑ Flat tile roof
❑ Typical brick application at base
❑ Horizontal siding and/or stucco
❑ When a front porch is provided, it shall
be useable with substantial wood
posts atop a base with wood
railing/pickets
❑ Gable vent or accent window detail
❑ Shutters also common to this style
AVANTI NORTH SPECIFIC PLAN V. Architectural Theme
and Style Guidelines
page V-16
Tuscan
The Tuscan style is a more rustic version of Italian architecture rooted in the Tuscany region of Italy. ❑ Primary horizontal mass with accentuated
vertical tower or defined element
❑ Meaningful stone application on façades
extends from foundation to eave
❑ Accent shutters can be cantilevered with iron
braces
❑ Wood or wood-look window and
door headers accentuate the rustic
feel
❑ Primary entries are well-defined
❑ Lower pitched roof with flat or s-tile
AVANTI NORTH SPECIFIC PLAN VI. Specific Plan Administration page VI-1
VI. SPECIFIC PLAN ADMINISTRATION
A. Approval of the Specific Plan
The AVANTI NORTH Specific Plan will be reviewed by both the Planning Commission and City Council and adopted by Ordinance in accordance with the City of Lancaster’s established policy. The AVANTI NORTH Specific Plan establishes all of the development regulations for the Specific Plan area. The development regulations are structured for consistency with the City of Lancaster Zoning Code and incorporate general provisions, permitted uses, development standards, project approval procedures, and other zoning related provisions.

B. Amending the Specific Plan
Approval of this Specific Plan indicates acceptance by the City Council of a general framework for development including specific development standards that constitute the zoning regulations for the AVANTI NORTH Specific Plan area. Certain modifications to the Specific Plan text and exhibits may be necessary during the community’s development. Modifications to the Specific Plan shall occur in accordance with the amendment process described in this section. These amendments are divided into two categories.

The first category, “Substantial Conformance / Minor Modification,” as defined below, allows for minor changes to the Specific Plan without a public hearing and may be approved by the Director of Community Development. All other substantive proposed changes are considered “Formal Amendments” and are required to be reviewed for approval by the Planning Commission and the City Council.

Amendments may be requested at any time pursuant to California Government Code Section 65453(a).

If the Director of Community Development deems the proposed amendment as a Formal Amendment, it will be processed in the same manner as the original Specific Plan. Proposed amendments deemed to be a Substantial Conformances / Minor Modification by the Director of Community Development, as defined herein, will be processed administratively as a substantial conformance by the Administrative Review process.

1. Substantial Conformance / Minor Modification
Upon determination by the Director of Community Development, certain modifications to the Specific Plan text, graphics, and/or project design may not require Formal Amendments (i.e., through public hearing). The following Minor Modifications to the Specific Plan do not require a Specific Plan Amendment and are subject to review and approval by the Director of Community Development. The Director of Community Development, however, shall have the discretion to refer any such request for modification to the Planning Commission.

Minor Modifications include the following:

AVANTI NORTH SPECIFIC PLAN VI. Specific Plan Administration page VI-2
• Decrease in overall Specific Plan density.
• Adjustment of planning areas so long as the total acreage of that planning area does not decrease or increase by more than 15% of that stated within this Specific Plan. • Transfer of dwelling units between planning areas of 15% or less. • Realignment or modifications of streets serving AVANTI NORTH, lot lines, easement locations, and grading adjustments, if also approved by the City Engineer. • Modification of design criteria such as paving treatments, architectural details, landscape treatments, fencing, lighting, and entry treatments.
• Final facility sizing and precise location of water, sewer and storm drainage improvements when directed by the City Engineer.
• Change in utility and/or infrastructure servicing agency. • Collector alignment revisions when the centerline moves by less than 10 feet. • Landscape, wall material, wall alignment and streetscape design modifications, which are consistent with the design guidelines contained in this document as determined by the Development Review Committee.
• Modifications to Architectural Design Guidelines, such as variations of materials within the particular architectural style and complementary variations in colors. • Revisions to project graphics, which do not substantially change the intent of the graphics in the AVANTI NORTH Specific Plan.
• Specific modifications of a similar nature to those listed above, which the Director of Community Development deems minor, which are in keeping with the intent of the Specific Plan and which are in conformance with the City of Lancaster General Plan. • Any other proposed changes that are determined by the Director of Community Development to be minor modifications.

2. Formal Amendment
All Specific Plan modifications, which do not meet the criteria of a Substantial Conformance / Minor Modification as defined in this section, shall be deemed to require a Formal Amendment. This Specific Plan was prepared pursuant to California Government Code 65450, et. seq. Amendments to the Specific Plan shall be processed in accordance with applicable requirements of law, which include Section 65450, et. seq. of the California Government Code.

AVANTI NORTH SPECIFIC PLAN VI. Specific Plan Administration page VI-3
Formal Amendments shall be subject to the review and approval of the City Council. The Planning Commission shall first hear and consider all applications for Formal Amendments to the Specific Plan. The Planning Commission shall prepare a recommendation and findings on all applications for Formal Amendments to the City Council. As required by the California Government Code, all agencies significantly affected by the Formal Amendment shall be notified of the proposed action prior to the approval of the Formal Amendment.

Any Formal Amendment to this Specific Pan initiated by an applicant shall require preliminary review by the City of Lancaster Director of Community Development, filing of an official application and required materials supporting the amendment, submittal of a fee deposit, Planning Commission review and recommendation and City Council review and final decision.

In considering approval or disapproval of Formal Specific Plan Amendments, the City Council shall find that the proposed Amendment is in compliance with the following:
(1) The proposed Amendment is consistent with the General Plan and its Elements in effect at the time of consideration.
(2) The proposed Amendment does not result in an incompatibility with surrounding land uses with respect to use, development standards, density, or issues of health, public safety, or general welfare.
(3) The proposed Amendment is consistent with the overall design character and general community structure of the Avanti North Specific Plan as set forth in the Specific Plan’s Design Guidelines (Section VI and V).
(4) The proposed Amendment is not likely to cause substantial environmental damage, or substantially and avoidably injure significant wildlife, or their habitat.

C. Approval of Implementing Projects
The purpose of this section is to provide a process for the implementation and review of all Tract Maps, which will be required to implement the development and construction of the AVANTI NORTH Specific Plan.

Following the approval of the tentative map, the final Tract Map and application for final Tract Map approval shall be shall be filed with the Director of Public Works. The Director of Public Works or his or her designee shall review the Tract Map for conformance with the tentative map conditions of approval and the provisions set forth by this Specific Plan. All projects constructed in accordance with an approved Tract Map shall be permanently maintained as approved. Any desired subsequent changes shall be submitted for approval as an amendment to the Tract Map.

D. CEQA Compliance Process
The AVANTI NORTH Specific Plan was required by State law to undergo environmental review in accordance with the California Environmental Quality Act (CEQA). Pursuant to State and local CEQA guidelines, the AVANTI NORTH SPECIFIC PLAN VI. Specific Plan Administration page VI-4
City of Lancaster prepared an Environmental Impact Report (EIR). Prior to the approval of the Specific Plan, the EIR was considered and certified by the Lancaster City Counsel. Any amendments to this Specific Plan or discretionary approvals required to implement this Specific Plan also are subject to the requirements of CEQA.
#QYTQMSUZ0D3ADNv1
City of Lancaster
44933 FERN AVENUE
LANCASTER, CA 93534

AVANTI NORTH

EIR ADDENDUM
STATE CLEARINGHOUSE NO. 2015111056
DECEMBER 2022
Environmental Impact Report
Addendum
State Clearinghouse No. 2015111056

AVANTI NORTH PROJECT
City of Lancaster
Lead Agency:

City of Lancaster
Contact: Jocelyn Swain, Senior Planner – Community Development 44933 Fern Avenue
Lancaster, CA 93534
661.723.6249
Prepared with Assistance by:

T&B Planning, Inc.
3200 El Camino Real, Suite 100
Irvine, California 92602
714.505.6360

AVANTI NORTH PROJECT EIR ADDENDUM

CITY OF LANCASTER
Table of Contents
December 2022 Page i
Section Page

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

1.1 PURPOSE OF AN EIR ADDENDUM ..................................................................................... 1

1.2 SCOPE OF ANALYSIS FOR THIS ADDENDUM................................................................... 3

1.3 PREVIOUS ENVIRONMENTAL DOCUMENTATION ......................................................... 4

1.3.1 2017 Certified Environmental Impact Report.....................................................................4

2. APPROVED PROJECT...............................................................................................................................5

2.1 PROJECT BACKGROUND ..................................................................................................... 5

2.1.1 Approved Project Location.................................................................................................5

2.1.2 Approved Project Description ............................................................................................5

3. PROPOSED PROJECT ......................................................................................................................................7

3.1 PROPOSED PROJECT DESCRIPTION.................................................................................. 7

3.2 PROJECT SITE LOCATION AND SURROUNDING LAND USES...................................... 8

3.3 PROJECT IMPROVEMENTS.................................................................................................. 8

3.3.1 Planning Areas and Residential Dwelling Units.................................................................8

3.4 PROJECT CONSTRUCTION................................................................................................... 9

3.4.1 Project Phasing ...................................................................................................................9

3.4.2 Construction Schedule ...................................................................................................... 11

4. CEQA ANALYSIS.......................................................................................................................................12

4.1 ENVIRONMENTAL ANALYSIS........................................................................................... 12

4.1.1 Aesthetics..........................................................................................................................13

4.1.2 Agriculture and Forestry Resources..................................................................................14

4.1.3 Air Quality........................................................................................................................15

4.1.4 Biological Resources........................................................................................................18

4.1.5 Cultural Resources............................................................................................................21

4.1.6 Geology and Soils.............................................................................................................22

4.1.7 Greenhouse Gas Emissions...............................................................................................23

4.1.8 Hazards and Hazardous Materials ....................................................................................25

4.1.9 Hydrology and Water Quality...........................................................................................28

4.1.10 Land Use and Planning.....................................................................................................31

4.1.11 Noise.................................................................................................................................32

4.1.12 Population and Housing....................................................................................................40

4.1.13 Public Services..................................................................................................................42

4.1.14 Recreation.........................................................................................................................45

4.1.15 Transportation and Traffic ................................................................................................46

4.1.16 Utilities and Service Systems ...........................................................................................51

4.2 FINDINGS .............................................................................................................................. 55

5. REFERENCES............................................................................................................................................58

AVANTI NORTH PROJECT EIR ADDENDUM

CITY OF LANCASTER
Table of Contents
Page ii T&B Planning, Inc.

List of Appendices
Appendix A. 2017 Certified EIR’s Mitigation Monitoring and Reporting Program Appendix B. 2022 EIR Addendum’s Mitigation Monitoring and Reporting Program Appendix C. Air Quality and Greenhouse Gas Assessment
Appendix D. Preliminary Onsite & Offsite Drainage Report for TTM No. 73507 Appendix E. Noise Assessment
Appendix F. Transportation Analysis
Appendix G. Sewer Study for TTM No. 73507
Appendix H. Updated Water Supply Assessment

AVANTI NORTH PROJECT EIR ADDENDUM

CITY OF LANCASTER
December 2022 Page 1

1. INTRODUCTION
This document is an Addendum to the City of Lancaster’s (City’s) certified Environmental Impact Report (EIR) having State Clearinghouse (SCH) No. 2015111056, which analyzed potential environmental effects associated with the Avanti North Specific Plan, Tentative Tract Map (TTM) No. 73507, and associated discretionary actions (the approved project). The Avanti North Specific Plan authorizes the development of a master-planned community in accordance with the City of Lancaster’s General Plan “Urban Residential with Specific Plan overlay” designation. The approved Avanti North Specific Plan authorizes the development of a maximum of 753 single-family residential homes, two public neighborhood parks, and open space for the use of stormwater detention, on 237.25 gross-acres with an average residential density of 3.17 (rounded up to 3.2) dwelling units per acre (du/ac). TTM No. 73507 implements the Avanti North Specific Plan. TTM No. 73507 subdivides the Avanti North Specific Plan’s Planning Areas into 753 single-family residential lots (with lots ranging from 5,250 square feet (sf) to 8,750 sf, resulting in a gross density of 3.2 du/ac, 2 lots for neighborhood parks, 2 lots for open space for the purpose of stormwater detention, and master plan streets. TTM No. 73507 also identifies an existing earthen channel, the location of internal temporary and permanent utility infrastructure improvements (water lines, sewer lines, stormwater drainage facilities), proposed easements, and existing and proposed street improvements among other items.

An EIR for the approved project was certified by the City on May 2, 2017 (Certified EIR). The Certified EIR addressed potential impacts to the physical environment that would or may occur from implementation of the approved project. This Addendum to the Certified EIR has been prepared in accordance with Sections 15162 and 15164 of the California Environmental Quality Act (CEQA) Guidelines. The City, as the lead agency under CEQA, has prepared this Addendum to the Certified EIR to consider environmental impacts associated with a proposed Specific Plan Amendment, and corresponding changes to the approved TTM No. 73507 (proposed project). As more fully described in Section 3, the proposed project entails revisions to the Specific Plan’s planning areas and the TTM’s lotting, resulting in 873 residential homes (an addition of 120 homes compared to the approved project) and an increase of residential acreage by 1.7 acres with a corresponding reduction in non-residential acreage (parks and open space/basins) by 1.6 acres.

1.1 PURPOSE OF AN EIR ADDENDUM
According to CEQA Guidelines, Section 15164(a), an addendum shall be prepared if some changes or additions to a previously certified EIR are necessary, but none of the conditions enumerated in CEQA

AVANTI NO RTH PROJECT EIR ADDENDUM

CITY OF LANCASTER

Guidelines Sections 15162(a)(1) to (3), calling for the preparation of a subsequent EIR, have occurred.

As stated in CEQA Guidelines Section 15162 (Subsequent EIRs and Negative Declarations):

When an EIR has been certified or negative declaration adopted for a project, no subsequent EIR shall be prepared for that project unless the lead agency determines, on the basis of substantial evidence in the light of the whole record, one or more of the following:

1. Substantial changes are proposed in the project which will require major revisions of the previous EIR or negative declaration due to the involvement of new significant environmental effects or a substantial increase in the severity of previously identified significant effects;

2. Substantial changes occur with respect to the circumstances under which the project is undertaken which will require major revisions of the previous EIR or negative declaration due to the involvement of new significant environmental effects or a substantial increase in the severity of previously identified significant effects; or

3. New information of substantial importance, which was not known and could not have been known with the exercise of reasonable diligence at the time the previous EIR was certified as complete or negative declaration was adopted, shows any of the following:
(a) The project will have one or more significant effects not discussed in the previous EIR or negative declaration;
(b) Significant effects previously examined will be substantially more severe than shown in the previous EIR;
(c) Mitigation measures or alternatives previously found not to be feasible would in fact be feasible and would substantially reduce one or more significant effects of the project, but the project proponents decline to adopt the mitigation measure or alternative; or
(d) Mitigation measures or alternatives which are considerably different from those analyzed in the previous EIR would substantially reduce one or more significant effects on the environment, but the project proponents decline to adopt the mitigation measure or alternative.

The proposed changes that would result from the development of the proposed project would not result in any of the conditions outlined in CEQA Guidelines Sections 15162(a)(1) to (3), because the proposed changes would not result in new significant environmental effects or a substantial increase in the severity of previously identified significant effects requiring major revisions to the Certified EIR, and,

AVANTI NORTH PROJECT EIR ADDENDUM

CITY OF LANCASTER
December 2022 Page 3
as explained herein, no new information of substantial importance meets any of the conditions in CEQA Guidelines Section 15162 (a)(3). Accordingly, this Addendum provides the substantial evidence required by CEQA Guidelines Section 15164(e) to support the finding that a subsequent EIR is not required and an addendum to the Certified EIR is the appropriate environmental document to address changes to the proposed project.

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

1.2 SCOPE OF ANALYSIS FOR THIS ADDENDUM
This Addendum evaluates the proposed Specific Plan Amendment, and corresponding changes to the previously approved TTM No. 73507 as described in Section 3 of this document. The Addendum also considers whether there is any new information of substantial importance that was not known and could not have been known with exercise of reasonable diligence at the time that the EIR was certified.

The Addendum examines whether, as a result of any changes or any new information, a subsequent EIR may be required. This examination includes an analysis of the provisions of California Public Resources Code Section 21166 and Section 15162 of the CEQA Guidelines and their applicability to the proposed project.

As lead agency under CEQA, the City of Lancaster is required to evaluate the environmental impacts associated with the proposed project because it entails proposed discretionary approvalsthat are subject to CEQA. The scope of the review for project-related impacts for this Addendum is focused on the

AVANTI NO RTH PROJECT EIR ADDENDUM

CITY OF LANCASTER

differences between impacts analyzed by the Certified EIR for the approved project and impacts under the proposed project. The approved project serves as the “baseline” for evaluating the impacts of the proposed project. The baseline includes all applicable mitigation measures from the Certified EIR. As required by CEQA, this Addendum also addresses that there have been no changes in circumstances or new information that would potentially involve new environmental impacts. Appendix A of this Addendum includes the adopted Mitigation Monitoring and Reporting Program (MMRP) for the Certified EIR. Appendix B includes an updated MMRP for the proposed project.

1.3 PREVIOUS ENVIRONMENTAL DOCUMENTATION

1.3.1 2017 Certified Environmental Impact Report
The City’s Certified EIR evaluated two discretionary actions for the approved project:
 Avanti North Specific Plan
 TTM No. 73507
As required by CEQA, the City adopted an MMRP, Findings, and a Statement of Overriding Considerations. The Certified EIR found that the approved project would result in less than significant impacts with no mitigation with regard to:
 Aesthetics
 Agriculture and Forestry
 Cultural Resources
 Geology and Soils
 Greenhouse Gas
 Hazards and Hazardous Material
 Hydrology and Water Quality
 Land Use and Planning
 Population and Housing
 Public Services
 Recreation
 Utilities and Service Systems
The Certified EIR found that the approved project would result in less than significant impacts after implementation of mitigation measures with regard to:
 Air Quality (VOC)
 Biological Resources
The Certified EIR determined that implementation of the approved project would result in significant and unavoidable impacts to the following environmental topics:
 Noise (off-site transportation related noise)
 Transportation and Traffic (cumulative impacts)

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2. APPROVED PROJECT

2.1 PROJECT BACKGROUND

2.1.1 Approved Project Location
The approximately 237.3-acre project site is located in the northern portion of Los Angeles County, roughly in the center of the Antelope Valley and within the southwest portion of the City of Lancaster, California. The Antelope Valley is bounded by the Tehachapi Mountains to the northwest and the foothills of the San Gabriel Mountains to the southwest. The City of Palmdale is located to the south and unincorporated Los Angeles County surrounds the two cities. Los Angeles County abuts Orange County to the south, San Bernardino County to the east, Kern County to the north, and Ventura County to the northeast.

The project site is currently vacant and located approximately 5.0 miles west of the Antelope Valley Freeway (State Route 14 [SR-14]). Development has not commenced on the site as a result of the approved project.

On a local scale, the Project site is located south of Avenue K, north of Avenue K-8, east of 70th Street West, and west of 60th Street West. The subject property encompasses Assessor Parcel Map Number (APN) 3204-002-126. Vehicular access to the project site is provided from existing Avenue K to the north, Avenue K-8 to the south, 70th Street West to the west, and local roads in an existing residential community to the east.

The project site is bordered on the north by Avenue K, and further north by vacant, undeveloped land.

Residential homes are located north of Avenue K near 62nd Street West and Sundown Elementary School is located approximately a half mile to the north. Residential neighborhoods are located to the immediate east and to the northeast (north of Avenue K), of the project site. The project site is bordered on the west by 70th Street West. West of 70th Street West is vacant undeveloped land. The Good Shepherd Catholic Cemetery is located at 43121 70th Street West, near the southwest corner of the project site.

2.1.2 Approved Project Description
The approved project includes the following elements:

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 The Avanti North Specific Plan authorizes the development of a master-planned community in accordance with the City of Lancaster’s General Plan “Urban Residential with Specific Plan overlay” designation. Authorized development under the Avanti North Specific Plan would accommodate a maximum of 753 single-family residential homes, two public neighborhood parks, and open space proposed for the use of stormwater detention on 237.25 gross acres with an average residential density of 3.17 (rounded up to 3.2) dwelling units per acre (du/ac). Development would be accommodated in nine “Planning Areas.”
 Tentative Tract Map No. 73507 (TTM No. 73507) is an approved tentative tract map that subdivides the site to implement the Avanti North Specific Plan. TTM No. 73507 subdivides the Avanti North Specific Plan’s Planning Areas into 753 single-family residential lots (with lots ranging from 5,250 square feet (sf) to 8,750 sf, resulting in a gross density of 3.2 dwelling unit (du/ac), 2 lots for neighborhood parks, 2 lots for open space for the purpose of stormwater detention, and master plan streets. TTM No. 73507 also identifies an existing earthen channel, the location of internal temporary and permanent utility infrastructure improvements (water lines, sewer lines, stormwater drainage facilities), proposed easements, and existing and proposed street improvements, among other items.

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3. PROPOSED PROJECT

3.1 PROPOSED PROJECT DESCRIPTION
The proposed project involves an amendment to the approved Avanti North Specific Plan and a revision to TTM No. 73507. The revisions would facilitate the construction and occupancy of a 237.3-acre master-planned community comprised of five residential neighborhoods, two public neighborhood parks, open space, and a backbone roadway network in the City of Lancaster, as was originally approved but with some configuration and density changes. Associated improvements to the property would be the same and include, but are not limited to, roadway improvements, utility infrastructure, walls and fencing, signage, lighting, and landscaping.

Avanti North’s five proposed residential neighborhoods provide up to 873 detached, single-family homes on lots ranging in size from a minimum of 5,000 sf to a minimum of 6,600 sf. The assortment of lot sizes would allow for a community with abundant housing size choices, including homes attainable to the demographic profile for young families, first-time buyers, members of the local labor force, and retirees, among other household types. The variety of home sizes is further diversified by six complementary architectural styles to provide aesthetic variety throughout the community.

The two neighborhood parks are positioned within walking distance homes to meet the recreational needs of community residents. To reach the parks, pedestrian circulation is encouraged by a network of traditional and meandering sidewalks along every street. Residents and visitors can easily walk in and between the neighborhoods and to the parks, and surrounding neighborhoods.

A summary of the land uses provided by proposed Specific Plan Amendment is shown in Table 1, Specific Plan Amendment Specific Plan Amendment Land Use Summary.

Table 1Specific Plan Amendment Land Use Summary
Land Use Acreage
Residential Homes (up to 873 homes) 201.3
Neighborhood Parks (2) 10.2
Open Space / Basin 10.4
Master Plan Streets 15.4
Specific Plan Totals 237.3

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3.2 PROJECT SITE LOCATION AND SURROUNDING LAND USES
The proposed project would be in the same location as the approved project, as described in Section

2.1.1, Approved Project Location. Surrounding land uses are also the same as describe in Section 2.1.1, Approved Project Location.

3.3 PROJECT IMPROVEMENTS

3.3.1 Planning Areas and Residential Dwelling Units
For planning purposes, the proposed project is divided into nine planning areas as detailed in the proposed Avanti North Specific Plan Amendment (SPA). The residential neighborhoods (Planning Areas A, B, C, D, and E) would offer single family homes with a variety of lot sizes, home sizes, and architectural styles. Vibrancy and outdoor activity within the project site would be enhanced by a walkable design; pedestrian connections link the residential neighborhoods to the two neighborhood parks (Planning Areas F and G), a meandering pathway along the open space (Planning Areas H and I) and the surrounding off-site area. The planning areas as follows:
 Planning Area A is 30.5 and accommodates 151 dwelling units on minimum 5,250 sf lots, at a gross density of 5.0 du/ac, in the northwest section of the project site.  Planning Area B is 34.2 acres and accommodates 153 dwelling units on minimum 5,500 sf lots, at a gross density of 4.5 du/ac, in the southwest section of the project site.  Planning Area C is 46.7 acres and accommodates 179 dwelling units on minimum 6,000 sf lots, at a gross density of 3.8 du/ac, in the north- and south-central section of the project site.  Planning Area D is a total of 41.9 acres located in the northeast section of the project site. The northern portion of Planning Area D is 18.6 acres and accommodates 97 dwelling units on minimum 5,000 sf lots, at a gross density of 5.2 du/ac. The southern portion of Planning Area D is

23.3 acres and accommodates 91 dwelling units on minimum 6,000 sf lots, at a gross density of

3.9 du/ac.
 Planning Area E is a total of 48.0 acres located southeast section of the project site. The western portion of Planning Area E is 23.4 acres and accommodates 104 dwelling units on minimum 5,500 sf lots, at a gross density of 4.4 du/ac. The eastern portion of Planning Area E is 24.6 acres and accommodates 98 dwelling units on minimum 6,600 sf lots, at a gross density of 4.0 du/ac.

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 Planning Areas F and G are the two neighborhood parks with a total of 10.2 acres. Planning Area F is 4.2 acres in the east section of the project site and Planning Area G is 6.0 acres in the west section of the project site.
 Planning Areas H and I are the two open space areas with a total of 10.4 acres that serve storm water detention purposes along the west side of 65th Street West located in the central section of the project site. Planning Area H is 5.0 acres located in the north-central section of the project site and Planning Area I is 5.4 acres located in the south-central section of the project site.

As shown in Table 2, Detailed Land Use Summary, with implementation of the proposed project, the residential development would add 120 additional dwelling units for a total of 873 dwelling units compared to the 753 units proposed under the approved project.

3.4 PROJECT CONSTRUCTION

3.4.1 Project Phasing
The proposed project will be completed in five phases in response to market demands and a logical and orderly extension of roads, utilities, and infrastructure:
 Phase 1 generally covers the northeastern portions of the Avanti North community and includes residential Planning Area D and the park within Planning Area F. 65th Street West and portions of Avenue K and Avenue K-8 are also constructed as part of this phase. All required community and roadway landscaping, as well as applicable entry monumentation, are installed by the developer of the tract or area served by the associated roads.
 Phase 2 covers development of the southeastern portion of the Avanti North community and includes residential Planning Area E. A portion of Avenue K-8 is also constructed as part of this phase. The associated roads and all necessary utilities will also be constructed.  Phase 3 covers development of the central portion of the Avanti North community and includes residential Planning Area C and Open Space Planning Areas H and I. Portions of Avenue K and Avenue K-8 are also constructed as part of this phase. The associated roads and all necessary utilities will also be constructed.
 Phase 4 covers development of the northwestern portion of the Avanti North community and includes residential Planning Area A and the park within Planning Area G. Portions of Avenue K and 70th Street West are also constructed as part of this phase. The associated roads and all necessary utilities will also be constructed.

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Table 2Detailed Land Use Summary
Planning Area Land Use
Approved Project
Dwelling Units (du)/
Acres (ac)
Proposed Project
Dwelling Units (du)/
Acres (ac)
Net Change
Urban Residential
A 5,250 sf Residential Lots1 150 du/

31.5 ac
151 du/

30.5 ac
+1 du/
-1.0 ac
B
6,050 sf Residential Lots1 148 du/

35.5 ac n/a
+5 du/
-1.3 ac 5,500 sf Residential Lots1 n/a 153 du/

34.2 ac
C
6,900 sf Residential Lots1 162 du/

42.7 ac n/a
+17 du/
+4.0 ac 6,000 sf Residential Lots1 n/a 179 du/

46.7 ac
D
7,800 sf Residential Lots1 156 du/

47.4 ac n/a
+32 du/
-5.5 ac
5,000 sf Residential Lots1
n/a 97 du/

18.6 ac
6,000 sf Residential Lots1
n/a 91 du/

23.3 ac
E
8,750 sf Residential Lots1 137 du/

42.5 ac n/a
+65 du/
+5.5 ac 5,500 sf Residential Lots1 n/a 104 du/

23.4 ac
6,600 sf Residential Lots1 n/a 98 du/

24.6 ac
Residential Subtotals 753 du/
199.6 ac
873 du/
201.3 ac
+120 du/
+1.7 ac
Non-Residential
F Neighborhood Park (west side) 6.3 ac 4.2 ac -2.1 ac
G Neighborhood Park (east side) 4.1 ac 6.0 ac +1.9 ac
H Open Space / Basin 5.7 ac 5.0 ac -0.7 ac
I Open Space / Basin 6.1 ac 5.4 ac -0.7 ac
Master Plan Streets2 15.5 ac 15.4 ac -0.1 ac
Non-Residential Subtotals 37.7 ac 36.0 ac -1.7 ac
Project Totals 753 du/
237.3 ac
873 du/
237.3 ac
+120 du/
0 ac
1 Minimum lot size. Lots may be larger than the indicated minimum. 2 Master Plan Streets include Avenue K, Avenue K-8, 65th Street West, and 70th Street West.  Phase 5 covers development of the southwestern portion of the Avanti North community and includes residential Planning Area B. Portions of 70th Street West and Avenue K-8 are also constructed as part of this phase. The associated roads and all necessary utilities will also be constructed.

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3.4.2 Construction Schedule
Construction of the proposed project is anticipated to start in mid-2023 and complete in mid-2028. The first residential uses are anticipated to be occupied in 2024. Construction would occur over approximately 60 months and include grading and excavation, trenching for site utilities and irrigation, building construction, architectural coatings, driveway and walkway construction, landscaping, and street connection improvements. The proposed project’s construction characteristics would be the same as were assumed for the approved project, with the exception of a later construction start date and completion date.

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4. CEQA ANALYSIS

4.1 ENVIRONMENTAL ANALYSIS
The scope of the City’s review of the proposed project is limited by provisions in CEQA and the State CEQA Guidelines. This review is limited to evaluating the environmental effects associated with the proposed project compared to the approved project found in the Certified EIR. This Addendum also reviews new information, if any, of substantial importance that was not known and could not have been known with the exercise of reasonable due diligence at the time the EIR was certified. This includes explanation of why the changes proposed for the proposed project would not result in: 1) any new significant impacts, 2) a substantial increase in a previously identified significant impact, 3) mitigation measures or alternatives previously found not to be feasible that would in fact be feasible and that would substantially reduce one or more significant effects of the project, and/or 4) alternatives which are considerably different from those analyzed in the previous EIR that would substantially reduce one or more significant effects on the environment.

Section 15164(b) of the CEQA Guidelines (Cal. Code of Regs., Title 14, Sections 15000 et. seq.) authorizes a lead agency to prepare an addendum to an EIR “if only minor technical changes or additions are necessary or none of the conditions described in Section 15162 calling for preparation of a subsequent EIR have occurred.” State CEQA Guidelines Section 15164 does not stipulate the format or content of an addendum. For purposes of analysis herein, the environmental topical areas analyzed in the Certified EIR are the same environmental factors evaluated in this Addendum, which is a format that complies with CEQA. This comparative analysis provides the City with the factual basis for determining whether any changes in the approved project, any changes in circumstances, or any new information since the EIR was certified would require additional environmental review or preparation of a subsequent EIR or supplemental EIR.

Pursuant to Section 15162 of the State CEQA Guidelines, the City has determined, on the basis of substantial evidence in the light of the whole record, that the proposed project does not propose substantial changes to the approved project, no substantial changes in circumstances would require major revisions to the Certified EIR, and no new information of substantial importance has been revealed since the certification of EIR that would result in either new significant effects, or an increase in the severity of previously analyzed significant effects. Additionally, there are no new mitigation measures or alternatives that were previously found not to be feasible, that would in fact be feasible and would substantially reduce one or more significant effects of the project, that project proponent has declined to accept.

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4.1.1 Aesthetics
Approved Project Impact Analysis
The Certified EIR determined that the approved project would have the potential to intermittently obscure views of Quartz Hill for motorists and pedestrians traveling along Avenue K from 60th Street West towards 70th Street West and traveling south along 70th Street West from Avenue K towards Avenue L; however, views of upper elevations of Quartz Hill would not be blocked from these locations and views of the landform would remain along the roadways. The approved project would result in the development of one-story and two-story residential uses, and would not include any high-profile components that would substantially affect scenic views within the project area. It was determined that development of the proposed homes could screen some public views from 60th Street West of the distant foothills and mountains; however, due to the relatively low profile of the proposed development such views of distant hillsides would not be substantially screened from views at nearby public vantage points.

Development of the approved project would change an undeveloped property to one with homes, parks, and infrastructure. It was determined that adherence to the development standards and design guidelines contained in the Avanti North Specific Plan would help to ensure that the master-planned community builds out as intended by the City of Lancaster General Plan and does not degrade the visual character or quality of the site and its surroundings.

The Certified EIR determined that the approved project would introduce new sources of lighting at the project site including street lighting, security lighting at the proposed parks, and light generated by individual residences; however, required compliance with Chapter 17.08, Residential Zones, §17.08.140, Outdoor Lighting, of the City of Lancaster Municipal Code would ensure that the approved project would not produce substantial amounts of light from artificial lighting sources that would adversely affect the day or nighttime views of the surrounding area. The approved project would introduce limited sources of glare at the project site, including reflective building materials such as glass windows; however, the approved project does not include any components of large expanses of reflective materials that would result in the generation of substantial amounts of glare. Moreover, proposed walls, fences, and landscaping would screen some potential sources of glare from affecting nearby motorists or residents. Accordingly, the Certified EIR found that the approved project would result in less than significant impacts on aesthetics.

Approved Project Mitigation Measures
No mitigation measures were required for the approved project regarding aesthetics.

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Proposed Project Impact Analysis
The proposed project would add an additional 120 residential units to the project site; however, the proposed project would be within the same footprint as the approved project and would adhere to the same development standards and design guidelines as the approved project. No high-profile components that would substantially affect scenic views within the project area would be introduced.

Accordingly, impacts to the visual quality and character of the project site would not be substantially more severe as a result of the proposed project than as a result of the approved project. As with the approved project, implementation of the proposed project would be required to comply with Chapter

17.08, Residential Zones, §17.08.140, Outdoor Lighting, of the City of Lancaster Municipal Code.

There are no new potentially significant impacts associated with the Proposed Project related to aesthetics; therefore, the proposed project would result in less than significant impacts to aesthetics.

Proposed Project Mitigation Measures
No mitigation measures are required for the proposed project regarding aesthetics.

4.1.2 Agriculture and Forestry Resources
Approved Project Impact Analysis
The Certified EIR determined that the project site is designated as Grazing Land and does not contain any Prime Farmland, Farmland of Statewide Importance, Unique Farmland, or any property under a Williamson Act contract. The project site is zoned Specific Plan and therefore, would not conflict with existing zoning for agricultural use. The project site does not contain any forest lands, is not zoned for forest lands, nor is it identified as containing forest resources by the City of Lancaster or by a biological survey that was conducted as part of the Certified EIR. Accordingly, the approved project would not result in conversion of forest land to non-forest use and the Certified EIR found that the approved project would result in less than significant impacts on agriculture and forestry resources.

Approved Project Mitigation Measures
No mitigation measures were required for the approved project regarding agriculture and forestry resources.

Proposed Project Impact Analysis
The proposed project would be within the same footprint as the approved project. The project site has a General Plan land use designation of “Urban Residential (UR: 2-6.5 du/ac),” with a Specific Plan Overlay. The project site is zoned Specific Plan. General Plan land use designations in the surrounding areas include Urban Residential to the north and east; Urban Residential with a Specific Plan Overlay to the south; and Urban Residential with a Specific Plan Overlay and Commercial (C) to the west.

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According to the City of Lancaster’s Municipal Code, areas with land use designations UR would provide for single-family dwellings in an urban environment with full urban services. Only those additional uses that are complementary to and exist in harmony with an urban residential neighborhood are allowed. Agricultural uses and animal facilities are not allowed in this land use designation. (City of Lancaster, 2022, Chapter 17.08)
Because neither the proposed project nor the surrounding areas are designated for agricultural uses, there are no new potentially significant impacts associated with the proposed project. The proposed project would result in less than significant impacts to agriculture and forestry resources.

Proposed Project Mitigation Measures
No mitigation measures are required for the proposed project regarding agriculture and forestry resources.

4.1.3 Air Quality
Approved Project Impact Analysis
The Certified EIR determined that the approved project would be consistent with the growth forecasts in the Antelope Valley Air Quality Management District (AVAQMD). Additionally, it was determined that the approved project would not exceed regional significance thresholds for operational air pollutant emissions, would not result in a violation or increase in the severity of an existing violation of the ambient air quality standards, and would comply with all applicable AVAQMD rules and regulations. Accordingly, the Certified EIR found that the approved project would not conflict with or obstruct implementation of the applicable air quality plan.

Construction-related emissions for the approved project of NOX, CO, SOX, PM10, and PM2.5 were determined to be below the daily criteria pollutant thresholds; however, the Certified EIR found that project-related construction emissions would exceed the criteria pollutant threshold established by the AVAQMD for daily emissions of VOCs. Construction activities could potentially expose sensitive receptors near the site to substantial pollutant concentrations associated with VOCs during the architectural coating phase of construction. It was determined that a significant impact would occur, but with application of Mitigation Measure 4.3-1, the project’s construction-related emissions of VOCs would be reduced to less than significant levels.

Operational-source emissions from the approved project were determined not to exceed applicable AVAQMD regional thresholds of significance; therefore, the project’s long-term operational emissions would not expose sensitive receptors to substantial pollutant concentrations.

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The Certified EIR found that the approved project would not produce the volume of traffic required to generate a CO “hot spot” either in the context of the Los Angeles “hot spot” study or based on representative Bay Area Air Quality Management District (BAAQMD) CO threshold considerations.

Accordingly, it was determined that project-related vehicular emissions would not result in a substantial contribution of CO concentrations at intersections in the vicinity of the project site and sensitive receptors would not be exposed to substantial CO concentrations generated by the project's vehicular traffic.

During construction activities, it was determined that the approved project would have the potential to produce odors; however, construction activities on the project site would be required to comply with AVAQMD Rule 402, which prohibits the discharge of odorous air contaminants that would create a public nuisance. Accordingly, the approved project would not create objectionable odors affecting a substantial number of people during construction activities. Under long-term operational conditions, the approved project would include residential land uses, which are not typically associated with objectionable odors. Compliance with solid waste collection and disposal requirements in accordance with the City’s solid waste regulations and with AVAQMD Rule 402 would be mandatory, thereby precluding any significant odor impact. As such, the Certified EIR concluded that long-term occupancy of the approved project would not create objectionable odors affecting a substantial amount of people and impact would be less than significant.

Approved Project Mitigation Measures
Construction Emissions (VOC)
MM 4.3-1 Prior to issuance of building permits, the City of Lancaster Chief Building Official and/or their designated official shall verify that the following note is specified on all building plans. The requirement shall be specified in bid documents issued to prospective construction contractors and contractors shall be required to comply with the note and maintain written records of such compliance that can be inspected upon request.
a. Only “Zero-Volatile Organic Compounds” paints (no more than 100 gram/liter of VOC) and/or High Pressure Low volume (HPLV) applications consistent with Antelope Valley Air Quality Management District (AVAQMD) Rule 1113 shall be used during Project construction.

Proposed Project Impact Analysis
Similar to the approved project, construction-related air pollutant emissions would occur during buildout of the proposed project, including NOX, CO, SOX, PM10, PM2.5, and VOCs. The intensity of construction would be no different between the approved project and proposed project on any given day. As such, construction-related air pollutant effects would be identical between the approved project and proposed project. Since the proposed project would be constructed later in time than the Certified

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EIR assumed, it also is a reasonable expectation that construction equipment emissions would be less than reported in the Certified EIR as older, higher polluting construction equipment is phased out and replaced in construction fleets with newer and less polluting construction equipment over time in accordance with California Air Resources Board (CARB) regulations.

According to an Air Quality and Greenhouse Gas Assessment prepared for the proposed project by Urban Crossroads, Inc. (Appendix C), the net increase in daily air pollutant emissions for the additional residential units of the proposed project would not exceed any of the applicable significance thresholds (Urban Crossroads, 2022c, pp. 1 and 2). The Project Description in the 2015 Air Quality Impact Analysis for the approved project was based on 758 residential dwelling units although only 753 dwelling units were approved (5 fewer dwelling units were approved than analyzed in the technical report). The 2022 Air Quality and Greenhouse Gas Assessment uses the 758 dwelling units when discussing the approved project and therefore, indicates an increase of 120 dwelling units, consistent with the increase with the proposed project. As demonstrated in Appendix C, no new significant impacts or substantial increase in severity of impacts would occur with the development of the proposed project when compared to the approved project. As shown in Table 3, the proposed project would result in air pollutant emission increases that are not substantial compared to the approved project, and that fall well below the thresholds of significance.

Table 3Approved versus Proposed Project Operational Air Pollutant Emissions Source: (Urban Crossroads, 2022c, p. 2)
Implementation of Mitigation Measure 4.3-1 would still be applicable to the proposed project.

Proposed Project Mitigation Measures
The approved project mitigation measures are applicable to the proposed project as originally adopted and would reduce potential impacts due to construction-related emissions of VOC to less than significant levels.

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Construction Emissions (VOC)
MM 4.3-1 Prior to issuance of building permits, the City of Lancaster Chief Building Official and/or their designated official shall verify that the following note is specified on all building plans. The requirement shall be specified in bid documents issued to prospective construction contractors and contractors shall be required to comply with the note and maintain written records of such compliance that can be inspected upon request.
b. Only “Zero-Volatile Organic Compounds” paints (no more than 100 gram/liter of VOC) and/or High Pressure Low volume (HPLV) applications consistent with Antelope Valley Air Quality Management District (AVAQMD) Rule 1113 shall be used during Project construction.

4.1.4 Biological Resources
Approved Project Impact Analysis
The Certified EIR determined that no special status plants occur on the project site. Due to the presence of a few suitable burrows for the burrowing owl identified on the project site during the biological survey, it was determined that the approved project would have the potential to impact the burrowing owl if the existing burrows were to be used by wintering or breeding burrowing owls in the future. The Certified EIR concluded that implementation of Mitigation Measure MM 4.4-1 would reduce this potential impact to less than significant levels.

Special-status animals with the potential to be impacted by the approved project include loggerhead shrike, and raptors with the potential to forage on the project site; however, the Certified EIR found that due to the marginality of suitable foraging habitat, the approved project would result in a less than significant impact to these species.

The project site has been disturbed by previous agricultural use and development. It was determined that no riparian habitat or other sensitive natural communities are present on the project site or off-site areas and no federally protected wetlands are present on the project site. The project site is not an established native resident or migratory wildlife corridor; therefore, the Certified EIR determined that implementation of the approved project would have no potential to interfere with an established native resident or migratory wildlife corridor. The approved project has a limited potential to impact nesting birds if vegetation, including existing trees, would be removed during the nesting season (February 1 to August 31). Therefore, it was determined that due to the possible presence of nesting birds on the project site, if vegetation would be removed during the nesting season, implementation of the approved project would result in direct significant impacts to nesting birds. The Certified EIR concluded that

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implementation of Mitigation Measure MM 4.4-2 would reduce this impact to less than significant levels.

With mandatory compliance with standard regulatory requirements, including Municipal Code Chapter

15.66 regarding the Biological Impact Fee, the Certified EIR concluded that the approved project would not conflict with any City policies or ordinances. The project site is not located within a Significant Ecological Area (SEA) of Los Angeles County and there are no adopted Habitat Conservation Plans, Natural Community Conservation Plans or other approved local, regional, or state habitat conservation plans that apply to the project site.

Approved Project Mitigation Measures
MM 4.4-1 Prior to the issuance of a grading permit, the Development Services Director or his/her designee shall ensure that the Grading Plan includes a condition of approval requiring a qualified biologist to conduct a pre-construction presence/absence survey for burrowing owl within 14 days prior to site disturbance, with a second visit occurring within 24 hours of ground disturbance. If burrowing owls are not detected, grading may proceed without limitation. If burrowing owls are detected on the site, the owls shall be passively excluded from the site following professionally-accepted protocols, such as collapsing burrows and the use of one-way doors. If proximate habitat is not available in the opinion of a qualified biologist for successful passive relocation of the species, active relocation shall occur in coordination with the City of Lancaster outside of the nesting season to avoid the potential incidental take of active nests, unless the biologist demonstrates to the City of Lancaster that the proposed exclusion of owls would not result in the take of an active nest.

MM 4.4-2 Prior to the issuance of a grading permit, the Development Services Director or his/her designee shall ensure that the Grading Plan includes a condition of approval requiring all vegetation removal associated with the Project to occur outside of the migratory bird nesting season (February 1 to August 31). If avoidance of the nesting season is not feasible, then a qualified biologist shall conduct nesting bird surveys of the property no more than three days prior to the removal of any vegetation or structures with the potential to support nesting birds. If vegetation is not removed within three days of a nesting bird survey, then the surveys shall be repeated. If active nests are identified, then the biologist shall establish an adequate buffer depending on the species and the location of the nest (up to 200 feet for non-raptors and 500 feet for raptors), which shall be avoided until the nests are no longer active as determined by the biologist.

Proposed Project Impact Analysis
The proposed project would be within the same physical footprint as the approved project and would have the same limits of disturbance. The proposed addition of 120 residential units to the project site would have no bearing on biological resource impacts. The project site is in the same physical condition as it was when the Certified EIR was prepared; therefore, there are no substantially changed conditions.

Due to the possible presence of the burrowing owl at the time construction commences,

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implementation of Mitigation Measure MM 4.4-1 would reduce potential impacts to less than significant levels. The project site has marginal suitable foraging habitat, and therefore impacts to special status animals would be less than significant. It was previously determined with the approved project that no riparian habitat or other sensitive natural communities and no federally protected wetlands are present on the project site. The project site is not an established native resident or migratory wildlife corridor; however, due to the possible presence of nesting birds on the project site, if vegetation would be removed during the nesting season, implementation of the Mitigation Measure MM 4.4-2 would reduce impacts to less than significant levels. As was the case for the approved project, the project site is not located within a SEA of Los Angeles County and there are no adopted Habitat Conservation Plans, Natural Community Conservation Plans or other approved local, regional, or state habitat conservation plans that apply to the project site. As with the approved project, implementation of the proposed project would be required to comply with Municipal Code Chapter

15.66 regarding the Biological Impact Fee. There are no new potentially significant impacts associated with the proposed project; therefore, the proposed project would result in less-than-significant impacts to biological resources.

Proposed Project Mitigation Measures
The approved project mitigation measures are applicable to the proposed project as originally adopted and would reduce potential impacts due to the burrowing owl and nesting migratory birds to less than significant levels.

MM 4.4-1 Prior to the issuance of a grading permit, the Development Services Director or his/her designee shall ensure that the Grading Plan includes a condition of approval requiring a qualified biologist to conduct a pre-construction presence/absence survey for burrowing owl within 14 days prior to site disturbance, with a second visit occurring within 24 hours of ground disturbance. If burrowing owls are not detected, grading may proceed without limitation. If burrowing owls are detected on the site, the owls shall be passively excluded from the site following professionally-accepted protocols, such as collapsing burrows and the use of one-way doors. If proximate habitat is not available in the opinion of a qualified biologist for successful passive relocation of the species, active relocation shall occur in coordination with the City of Lancaster outside of the nesting season to avoid the potential incidental take of active nests, unless the biologist demonstrates to the City of Lancaster that the proposed exclusion of owls would not result in the take of an active nest.

MM 4.4-2 Prior to the issuance of a grading permit, the Development Services Director or his/her designee shall ensure that the Grading Plan includes a condition of approval requiring all vegetation removal associated with the Project to occur outside of the migratory bird nesting season (February 1 to August 31). If avoidance of the nesting season is not feasible, then a qualified biologist shall conduct nesting bird surveys of the property no more than three days prior to the removal of any vegetation or structures with the potential to support nesting birds. If vegetation is not removed within three days of a nesting bird survey, then the surveys shall be repeated. If active nests are identified, then the biologist

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shall establish an adequate buffer depending on the species and the location of the nest (up to 200 feet for non-raptors and 500 feet for raptors), which shall be avoided until the nests are no longer active as determined by the biologist.

4.1.5 Cultural Resources
Approved Project Impact Analysis
The Certified EIR determined that no above-ground historical resources and no known archaeological resources were located within the project site or in the off-site improvement area. The surficial young alluvial sediments at the project site have low potential to adversely impact significant nonrenewable paleontological resources. It was determined that no known cemeteries were located on the project site; however, in the unlikely event that human remains are encountered beneath the surface of the property during project construction, the construction contractor would be required to comply with California Health and Safety Code, Section 7050.5 “Disturbance of Human Remains” and Public Resources Code Section 5097.98.

As part of the AB52 consultation processes required by State law, three Native American tribes with possible traditional or cultural affiliation to the area were contacted during the preparation of the Certified EIR, however, no significant tribal resources were identified within the project site.

Approved Project Mitigation Measures
No mitigation measures were required for the approved project regarding cultural resources.

Proposed Project Impact Analysis
The proposed project would be within the same footprint as the approved project; thus, the same extent and depth of ground disturbance would occur and the potential for impacts to cultural resources would be the same as the approved project. As with the approved project, implementation of the proposed project would be required to comply with California Health and Safety Code, Section 7050.5 “Disturbance of Human Remains” and Public Resources Code Section 5097.98. There are no new potentially significant impacts associated with the proposed project; therefore, the proposed project would result in less than significant impacts to cultural resources.

Proposed Project Mitigation Measures
No mitigation measures are required for the proposed project regarding cultural resources.

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4.1.6 Geology and Soils
Approved Project Impact Analysis
The Certified EIR determined that there were no active faults within the project site and that the project site was not located within an Alquist-Priolo Fault Hazard Zone. The project site is located in a seismically active region of southern California and is expected to experience moderate to severe ground shaking associated with earthquakes during the lifetime of the Approved Project. The Certified EIR determined that this risk is not considered substantially different than the risk to other similar properties throughout the southern California region; however, as a mandatory condition of project approval, structures on the project site would be required to be constructed in accordance with the City of Lancaster Building Code which is based on the California Building Standards Code (CBSC) with local amendments. The CBSC and Chapter 15.08 Building Code of the City of Lancaster Municipal Code provide standards that would be required to be met to safeguard life or limb, health, property, and public welfare by controlling the design, construction, quality of materials, use and occupancy, location, and maintenance of all buildings and structures, and have been specifically tailored for California earthquake conditions. A geological assessment, as required by the CBSC (Chapter 18) and the City of Lancaster Zoning Code (Section 17.40.380(T)), was prepared for the approved project to identify site-specific geologic and seismic conditions and provide site-specific recommendations to preclude adverse effects involving unstable soils and strong seismic ground-shaking. It was determined that as a condition of project approval, compliance with the site-specific recommendations of the geotechnical investigation would be mandatory.

The Certified EIR found that due to the depth of groundwater being more than 150 feet below the existing ground surface and the density of the underlying soil, the potential for liquefaction to occur on the project site is unlikely; however, the approved project would be designed and constructed in accordance with the latest applicable seismic safety guidelines, including the standard requirements of the CBSC (Chapter 18) and Chapter 15.08 Building Code of the City of Lancaster Municipal Code, as well as the site-specific recommendations contained within the geotechnical investigation.

It was determined that implementation of the approved project would have the potential to result in soil erosion due to construction activities that would temporarily expose the underlying soils on the Project site. Pursuant to the requirements of the State Water Resources Control Board (SWRCB), it was concluded that the project applicant would be required to obtain a National Pollutant Discharge Elimination System (NPDES) permit for construction activities, including grading. The City’s Municipal Separate Storm Sewer System (MS4) NPDES Permit would require the project applicant to prepare and submit to the City for approval, a project-specific Storm Water Pollution Prevention Plan (SWPPP). In addition, it was determined that the approved project would be required to comply with Section 8.16.030 Disturbing Surface of Land or Causing Wind Erosion Prohibited, of the City of Lancaster Municipal Code and AVAQMD Rule 403 Fugitive Dust, which would reduce the amount of

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particulate matter in the air and minimize the potential for wind erosion. The approved project included specific components, including water quality basins, that are intended to reduce the potential for stormwater-related erosion impacts during project occupancy. The development of the approved project would result in the installation of permanent paved surfaces, as well as landscaping, which would reduce the potential for wind erosion to occur during project occupancy.

The Certified EIR found that the approved project would not be located on a geologic unit or soil that is unstable, or that would become unstable as a result of the project, and potentially result in on-or offsite landslide, lateral spreading, subsidence, liquefaction or collapse. Additionally, the majority of soils on the project site were found to be “very low” to “low” in expansion potential and therefore, it was determined that the approved project would not be located on an expansive soil that would create substantial risks to life or property. No septic tanks or alternative waste water disposal systems were included with the approved project.

Approved Project Mitigation Measures
No mitigation measures were required for the approved project regarding geology and soils.

Proposed Project Impact Analysis
The proposed project would be within the same footprint as the approved project and have a similar grading design; thus, impacts to geology and soils would be the same as disclosed for the approved project. As with the approved project, implementation of the proposed project would be required to comply with the CBSC, Chapter 15.08 Building Code of the City of Lancaster Municipal Code, Section

8.16.030 of the City of Lancaster Municipal Code, and AVAQMD Rule 403. There are no new potentially significant impacts associated with the proposed project; therefore, the proposed project would result in less than significant impacts to geology and soils.

Proposed Project Mitigation Measures
No mitigation measures are required for the proposed project regarding geology and soils.

4.1.7 Greenhouse Gas Emissions
Approved Project Impact Analysis
The Certified EIR found that the annual greenhouse gas (GHG) emissions associated with operation of the approved project would be 13,046.87 STCO2E (Short Tons CO2E) (11,835.92 MTCO2E [metric tons CO2E]) per year, which is well below the AVAQMD’s threshold of significance of 100,000 tons of CO2E for GHG emissions. Evidence indicated that the emissions from a project the size of the approved project would have no potential to directly or indirectly affect the global climate.

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The approved project would be required to be constructed in accordance with the most recent California Building Standards Code (CBSC) which includes the California Energy Code, or Title 24, Part 6 of the California Code of Regulations, also titled The Energy Efficiency Standards for Residential and Nonresidential Buildings, and CALGreen (Title 24, Part 11). The approved project’s energy demands would be minimized through design features and operational programs that would ensure that project energy efficiencies would comply with or exceed CBSC energy efficiency requirements, thereby minimizing GHG emissions produced during from energy consumption. Additionally, the approved project was determined not to conflict with the applicable recommendations of the California Air Resources Board (CARB) Scoping Plan. Therefore, the Certified EIR concluded that the approved project would not conflict with the State’s ability to achieve the Statewide GHG reduction targets defined in AB 32 and would be consistent with applicable and adopted policies and plans related to GHG emissions reduction.

Approved Project Mitigation Measures
No mitigation measures were required for the approved project regarding greenhouse gas emissions.

Proposed Project Impact Analysis
The proposed project would add a maximum of 120 additional residential units to the project site compared to the approved project. The Project Description in the 2015 Greenhouse Gas Analysis for the Approved Project was based on 758 residential dwelling units; however, the Certified EIR was approved with 753 dwelling units (5 less dwelling units than was indicated in the technical report). The 2022 Air Quality and Greenhouse Gas Assessment prepared by Urban Crossroads for the proposed project (Appendix C), uses the 758 dwelling units when discussing the approved project and therefore, indicates an increase of 120 dwelling units, consistent with the proposed project dwelling unit increase.

As stated above, the approved project would have annual greenhouse gas emissions of 13,046.87 STCO2E (11,835.92 MTCO2E). This emissions rate would only account for approximately 11.8 percent of the AVAQMD’s threshold of significance of 100,000 STCO2E for GHG emissions. According to the Air Quality and Greenhouse Gas Assessment prepared for the proposed project (Appendix C), the proposed project would have annual greenhouse gas emissions of 15,112.34 STCO2E. This would be an increase of 2,065.47 STCO2E, which would not exceed the applicable threshold for greenhouse gases and would not be a substantial increase in light of the 100,000 STCO2E significance threshold.

Therefore, even with the addition of 120 residential units to the project site, the proposed project would still be well under the AVAQMD’s threshold of significance. Impacts to greenhouse gas emissions would not be substantially more severe as a result of the proposed project than as a result of the approved project. (Urban Crossroads, 2022c, p. 2)

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Table 4Approved versus Proposed Project Greenhouse Gas Emissions Source: (Urban Crossroads, 2022c, p. 2)
As with the approved project, implementation of the proposed project would be required to comply with the most recent California Building Standards Code (CBSC) which includes the California Energy Code, or Title 24, Part 6 of the California Code of Regulations, also titled The Energy Efficiency Standards for Residential and Nonresidential Buildings, and CALGreen (Title 24, Part 11). Since the time that the approved project was approved and the EIR certified, there have been two updated to CALGreen, with the most recent update going into effect on January 1, 2023. Each iteration of CALGreen is more restrictive and energy efficient than the prior version. Thus, the proposed project’s later implementation schedule compared to the approved project inherently will reduce reliance on fossil fuels and be more energy efficient than assumed in the Certified EIR. Further, in 2018, California mandated that all new single-family homes and multi-family dwellings up to three stories high must install solar panels. Thus, every home on the project site will include rooftop solar panels. This changed circumstance will result in a lowering of greenhouse gas emissions compared to the assumptions made in the Certified EIR, before these regulatory requirements were in place. There are no new potentially significant impacts associated with the proposed project; therefore, the proposed project would result in less than significant impacts to greenhouse gas emissions.

Proposed Project Mitigation Measures
No mitigation measures are required for the proposed project regarding greenhouse gas emissions.

4.1.8 Hazards and Hazardous Materials
Approved Project Impact Analysis
The Certified EIR found that implementation of the approved project’s construction process would result in ground disturbance and the removal of improvements and debris that remain on the site from

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the former agricultural operation. On-site ground-disturbing construction activities would be required to comply with applicable regulations, including the NPDES Construction General Permit and the required SWPPP. In addition, as part of the issuance of grading and building permits, the County of Los Angeles Fire Department, which serves as the Certified Unified Program Agency (CUPA), would conduct oversight to ensure that all applicable remediation is conducted that falls under the CUPA's authority. The City of Lancaster Building and Safety Division would review all building plans for compliance with City Municipal Code requirements and make periodic inspections during the course of construction. The Certified EIR determined that mandatory compliance with applicable regulations would ensure that potential hazards to the public or the environment associated with the removal of any site improvements and remaining debris would be less than significant.

Mandatory compliance with the National Emission Standards for Hazardous Air Pollutants (NESHAP) within the Code of Federal Regulations (CFR) Title 40, Part 61, Subpart M, which are enforced in the project area by AVAQMD Rule 1403, Asbestos Emissions from Demolition/Renovation Activities, would ensure that construction-related grading, clearing and demolition activities do not expose construction workers or nearby sensitive receptors to significant health risks associated with Asbestos Containing Materials (ACMs).

The Certified EIR determined that during clearing of existing debris from the former farming operation, there would be potential of exposing construction workers to health hazards associated with lead and polychlorinated biphenyls (PCBs). Therefore, the approved project would be required to comply with Title 17, California Code of Regulations (CCR), Division 1, Chapter 8, which includes requirements such as employer provided training, air monitoring, protective clothing, respirators, and hand washing facilities, and with CCR Title 22, Division 4.5. Mandatory compliance with these regulatory requirements would ensure that construction workers would not be exposed to significant health hazards during demolition and impacts were determined to be less than significant.

Due to the plugged historical oil well located approximately 40 feet off-site and south of the southern property line, the CUPA would determine whether a methane barrier, typically required to be installed for homes within 300 feet of an existing or historic oil well, would be required for the approved project.

The Certified EIR determined that with mandatory compliance to the CUPA’s regulatory requirements, impacts would be less than significant.

Construction contractors would be required to comply with all applicable federal, state, and local laws and regulations regarding the transport, use, and storage of hazardous construction-related materials, including but not limited to the requirements of US Environmental Protection Agency (USEPA), Department of Toxic Substances Control (DTSC), and the State Regional Water Quality Control Board (SRWQCB). Because compliance with these regulatory requirements is mandatory for construction contractors, it was determined that the approved project would not create a significant hazard to the

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public or environment through the routine transport, use, or disposal of hazardous materials during the construction of the project and impacts would be less than significant.

Pursuant to State law and local regulations, residents of the approved project would be required to dispose of household hazardous waste (e.g., batteries, used oil, paint, etc.) at a permitted household hazardous waste collection facility. The Certified EIR determined that the development of a residential community within 0.25-mile of a planned school site would not pose a hazardous materials impact to the future school. Accordingly, it was determined that potential hazardous materials impacts associated with long-term occupancy of the approved project would not be expected to pose a significant hazard to the public or environment through the routine transport, use, or disposal of hazardous materials, nor would the approved project increase the potential for foreseeable upset and accident conditions which could result in the release of hazardous materials into the environment.

The Certified EIR determined that the project site is not listed on any list of hazardous materials sites compiled pursuant to Government Code Section 65962.5. Additionally, the approved project does not lie within an airport land use plan, or within two miles of a public airport or public use airport.

Accordingly, the approved project would not result in a safety hazard associated with aircraft operations associated with an airport land use plan or a public airport or public use airport within two miles of the project site. Additionally, it was determined that implementation of the approved project would not expose people residing or working in the area to safety hazards associated with a private airstrip.

During construction and long-term operation, the approved project would be required to maintain adequate access for emergency vehicles. It was determined, upon City review, that the approved project would not substantially impair implementation of or physically interfere with an adopted emergency response plan or emergency evacuation plan. The Certified EIR determined that a less-than-significant impact would occur and mitigation is not required.

The Certified EIR determined that the project site does not lie within a Very High Fire Hazard Severity Zone (VHFHSZ); however, the approved project would still be required to be constructed in accordance with all applicable fire safety standards. The approved project would be required to meet established fire flow requirements set by the City of Lancaster and comply with all relevant Los Angeles County Fire Department (LACFD) general requirements, which address adequate ingress and egress access for emergency response, emergency access and fire and life safety requirements during construction, water mains, fire flows and fire hydrant spacing, access roadways to Fire Department apparatus and maintenance of access roads and fire sprinkler systems. In addition, a number of California regulations, including Public Resources Code (PRC) §§4290-4299 and California Government Code (CGC) §51178, would apply to the approved project to address fire safety. It was determined that mandatory compliance with these regulations related to fire hazards would ensure that

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the approved project’s potential to expose people or structures to substantial risks associated with fire would be less than significant.

Approved Project Mitigation Measures
No mitigation measures were required for the approved project regarding hazards and hazardous materials.

Proposed Project Impact Analysis
There have been no changed conditions on the project site or in the immediately surrounding area since the Certified EIR was prepared. The proposed project would be within the same footprint as the approved project; thus, impacts to hazards and hazardous materials would be the same and not be substantially more severe as a result of the proposed project. As with the approved project, the proposed project would be required to comply with NPDES Construction General Permit; the required SWPPP; the NESHAP within the CFR Title 40, Part 61, Subpart M, Title 17; CCR, Division 1, Chapter 8; CCR Title 22, Division 4.5; requirements of USEPA, DTSC, and the SRWQCB; and the established fire flow requirements and all relevant LACFD general requirements; PRC §§4290-4299; and CGC §51178. There are no new potentially significant impacts associated with the proposed project assuming compliance with mandatory regulatory requirements; therefore, the proposed project would result in less than significant impacts to hazards and hazardous materials.

Proposed Project Mitigation Measures
No mitigation measures are required for the proposed project regarding hazards and hazardous materials.

4.1.9 Hydrology and Water Quality
Approved Project Impact Analysis
The Certified EIR found that construction of the approved project would involve clearing, grading, paving, utility installation, landscaping activities and the building of homes, which would generate potential water quality pollutants such as silt, debris, chemicals, paints, and other solvents with the potential to adversely affect water quality. It was determined that the approved project would be required to obtain a NPDES Municipal Stormwater Permit for construction activities, comply with the provisions of the Lahontan Regional Basin Plan, and prepare a SWPPP for construction-related activities. The Certified EIR concluded that mandatory compliance with the SWPPP would ensure that the approved project would not violate any water quality standards or waste discharge requirements during construction activities; therefore, water quality impacts associated with construction activities would be less than significant.

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It was determined that the construction and operation of storm drain facilities on the project site would ensure that storm water originating from off-site sources south of the project site would be conveyed through the project site to off-site facilities to the north of the project without any affect to water quality. The approved project’s detention basins would detain and treat the captured storm water flows that originate from within the project site, which would ensure that the approved project’s storm water is treated and result in less than significant water quality impacts.

The Certified EIR determined that the project applicant would be required to acquire sufficient reliable and permanent water entitlements for the approved project and convey those entitlements to the Los Angeles Waterworks District No. 40; therefore, the project applicant purchased Nickel Water, thus providing guaranteed delivery of ten thousand acre-feet of water per year (10,000 AFY) from any sources available to the Kern County Water Agency (KCWA) to the Nickel Family, LLC which would eliminate the need for District 40 to provide water through its own supply of imported water or groundwater.

The approved project would include impermeable sources, which may affect the ability for groundwater recharge to occur at the project site; however, it was determined that the storm water flows that originate at the project site would be collected by a drainage system and conveyed to on-site detention basins, where groundwater recharge would occur before remaining flows are conveyed offsite. The project’s conveyance of storm water flows to properties north of the project site after discharge from the on-site detention basins would allow for the continued sheet flow of storm water over vacant land to the north, which would allow for groundwater recharge similar to the existing conditions. Accordingly, the Certified EIR concluded that the project would not substantially deplete groundwater supplies or interfere substantially with groundwater recharge such that there would be a net deficit in aquifer volume or a lowering of the local groundwater table level.

Drainage and flood control facilities and improvements would be provided for the approved project in accordance with the standards and requirements of the City of Lancaster Master Plan of Drainage (updated in December 2020) (City of Lancaster, 2020). It was determined that installation of a separate storm drain line to capture and convey storm water generated by upstream properties to the south, through the project site to the north would not alter the drainage pattern of the area, because this pattern occurs under existing conditions.

A detailed analysis of the approved project’s storm water drainage system determined that the approved project’s proposed storm drain system would adequately convey and protect the approved project up to the 50-year storm event. The proposed drainage improvements would reduce erosion and sedimentation compared to existing conditions because the addition of paved surfaces and landscaping on the project site would substantially reduce the area of bare, uncovered soils and proposed BMPs would remove sediment from storm water runoff before it is discharged from the project site.

Accordingly, impacts were determined to be would be less than significant.

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The Certified EIR concluded that mandatory compliance with the project’s SWPPP and incorporation of BMPs, the approved project would not create or contribute substantial additional sources of polluted runoff and impacts would be less than significant.

The Certified EIR determined that the project site is not located within a 100-year flood hazard zone, thus, the approved project would not place housing within a 100-year flood hazard area. Additionally, it was determined that the project would not expose people or structures to a significant risk of loss, injury or death involving flooding, including flooding as a result of the failure of a levee or a dam and the project would not be subject to inundation by seiches, tsunami, or mudflow.

Approved Project Mitigation Measures
No mitigation measures were required for the approved project regarding hydrology and water quality.

Proposed Project Impact Analysis
The proposed project would add a maximum of 120 additional residential units to the project site; however, they would be within the same footprint as the approved project. Construction activities for the proposed project would involve clearing, grading, paving, utility installation, landscaping activities and the building of homes, similar to the approved project. As described in a Preliminary Onsite & Offsite Drainage Report for the proposed project contained hereto as Appendix D (MDS Consulting, 2022), the existing drainage pattern through the project site is a north-south sheet flow condition. The proposed project would install multiple onsite storm drain facilities that would convey a 50-year storm event. The onsite runoff would be collected by curb and gutter, drained into catch basins, and would then be conveyed by storm drain pipe and discharged into onsite proposed detention basins. The basins would individually attenuate the storm flows in order to mitigate for an increase in runoff due to the proposed development. Inlet stand risers would be installed at basins in order to restrict the flows prior to discharging into an 84-inch storm drain. (MDS Consulting, 2022, pp. 4 and 5) There is an existing 72-inch storm drain along Avenue K that conveys flows from the residential development located to the east of the project site. A 42-inch storm drain is proposed along Avenue K which would convey offsite flows from the west. Both the proposed 42-inch and the existing 72-inch storm drains would join with the proposed double 84-inch storm drain at the Avenue K and 65th Street West intersection. In the ultimate condition, the trapezoidal channel would be removed and replaced with two 84-inch storm drain pipes. The proposed double 84-inch storm drain would have a capacity of 750-800 cubic feet per second (cfs) and run north to join to an existing 84-inch storm drain located on 65th Street West at Avenue J-12. The drainage report for the proposed project (Appendix D) concluded that the proposed storm drain system will adequately intercept, convey and protect the project site up to the 50- year storm event. (MDS Consulting, 2022, pp. 5 and 8)

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As with the approved project, implementation of the proposed project would be required to obtain a NPDES Municipal Stormwater Permit which involves preparation of a Storm Water Pollutant Prevention Plan (SWPPP) for construction-related activities. Additionally, the proposed project would be required to comply with the provisions of the Lahontan Region Basin Plan and to acquire sufficient reliable and permanent water entitlements and convey those entitlements to the Los Angeles Waterworks District No. 40. There are no new potentially significant impacts associated with the proposed project; therefore, the proposed project would result in less than significant impacts to hydrology and water quality.

Proposed Project Mitigation Measures
No mitigation measures are required for the proposed project regarding hydrology and water quality.

4.1.10 Land Use and Planning
Approved Project Impact Analysis
The Certified EIR determined that the approved project would not isolate any established communities or residences from neighboring communities and would not physically divide an established community and a less than significant impact would occur.

The Certified EIR identified three applicable policy documents to the approved project that were adopted for the purpose of avoiding or mitigating an environmental effect: 1) the City of Lancaster General Plan; 2) the AVAQMD’s Ozone Attainment Plan; and 3) the Southern California Association of Governments Regional Transportation Plan/Sustainable Communities Strategy (SCAG RTP/SCS).

A General Plan consistency analysis conducted for the approved project determined that the approved project was consistent with all applicable General Plan goals, objectives, and policies. The approved project was determined to be consistent with the land use and zoning designations and growth forecasts of the General Plan 2030. The approved project would not exceed regional thresholds for operational emissions and would not result in a violation or increase in the severity of an existing violation of the ambient air quality standards; therefore, it was determined that the approved project would comply with all applicable AVAQMD rules and regulations. In addition, it was determined that the approved project would be consistent with SCAG’s RTP/SCS and would not conflict with any of the land use components. Accordingly, no inconsistencies with the RTP/SCS have been identified.

The project site is not located within a SEA or an adopted Habitat Conservation Plan, Natural Community Conservation Plan or other approved local, regional, or state habitat conservation plan; therefore, the Certified EIR determined that no impact would occur.

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Approved Project Mitigation Measures
No mitigation measures were required for the approved project regarding land use and planning.

Proposed Project Impact Analysis
The proposed project would add a maximum of 120 residential units for a total of 873 residential units, compared to the 753 residential units under the approved project. The proposed project is consistent with the General Plan land use designation of Urban Residential (UR) with a Specific Plan Overlay.

Because the proposed project consists of a master-planned residential community in accordance with the land use and zoning designations of the General Plan, it is, therefore, consistent with the growth forecasts in the General Plan. Thus, the proposed project would not result in substantial unplanned population growth either directly or indirectly, and population growth as a result of the proposed project would be within SCAG’s forecast growth projections for the City. As with the approved project, implementation of the proposed project would be required to comply with the City of Lancaster General Plan 2030, the AVAQMD’s Ozone Attainment Plan, and the SCAG RTP/SCS, as updated in 2021 (Connect SoCal 2024). The approved project would achieve the housing attainment goals of Connect SoCal 2024 and the City’s General Plan better than the approved project, particularly in light of California’s Housing Crisis Act of 2019, which became law after approval of the approved project.

There are no new potentially significant impacts associated with the proposed project; therefore, the proposed project would result in less than significant land use and planning impacts.

Proposed Project Mitigation Measures
No mitigation measures are required for the proposed project regarding land use and planning.

4.1.11 Noise
Approved Project Impact Analysis
The Certified EIR determined that construction equipment operating on the project site would create intermittent periods of noise when construction equipment is in operation, which would cause shortterm increases in ambient noise levels. According to the Noise Impact Assessment completed for the approved project, the unmitigated peak short-term mobile construction noise levels are calculated to range from 73.1 to 78.9 dBA Lmax and the expected long-term stationary construction noise levels at the project boundary are calculated to range from 45.1 to 53.5 dBA Lmax. Neither of these would not exceed the construction noise level threshold of 80 dBA Lmax for single-family residential land use when operating adjacent to the project site boundary; therefore, both short-term and long-term stationary construction-related noise impacts are less than significant.

As presented in the Certified EIR, exterior traffic noise levels for 38 study area roadway segments were analyzed for the Without Project and the With Project conditions for two scenarios: Existing and Year

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2020. It was determined that the project would result in a noise increase of 1.5 dBA CNEL or greater at five roadway segments which already exceed 65 dBA CNEL under existing conditions without the approved project; therefore, implementation of the approved project was determined to result in a significant direct impact at these five roadway segments. No feasible mitigation measures were available to reduce the transportation-related noise impact to residential homes fronting on or near Roadway Segments 16 (Avenue K east 62nd Street West,), 17 (Avenue K west of 62nd Street West), 18 (Avenue K east of 60th Street West), 19 (Avenue K west of 50th Street West) and 27 (Avenue L east of 60th Street West). The Certified EIR concluded that the only way to feasibly reduce the impact at offsite locations would be to temporarily increase the height of existing masonry walls located along Avenue K, or construct new temporary sound attenuation walls near residences along Avenue K. This impact was considered a significant and unavoidable direct impact in the near term. However, by Year 2020, when the approved project was projected to become operational, the approved project’s contribution of transportation-related noise to these street segments would fall below the cumulatively considerable significance threshold of 1.5 dBA, as traffic volumes increase and the approved project’s overall percentage of the noise level diminishes.

Future exterior noise levels in the outdoor living areas (backyards) for the lots proposed for the project site were also analyzed. It was determined that the lots adjacent to Avenue K, 70th Street West, 65th Street West, and Avenue K-8 would experience unmitigated exterior noise levels ranging from 69.2 to

70.6 dBA CNEL, which would exceed the City of Lancaster’s 65 dBA CNEL exterior noise level standards and therefore, a significant direct impact would occur and mitigation measures were required.

Future interior noise levels at the first and second floor building facades were also calculated. Future unmitigated noise levels (with windows open) were calculated to range from 61.4 to 63.4 dBA CNEL at the first floor building façade and from 68.5 to 69.9 dBA CNEL at the second floor building façade.

The Certified EIR determined that the City of Lancaster 45 dBA CNEL interior noise level criteria would be exceeded at several of the lots with windows open. Although CEQA requires an analysis of the project’s impact on the environment and not the environment’s impact on the project, it was nonetheless concluded that the project would result in significant direct impacts at several of the lots, which would require a windows-closed condition to meet the City’s interior noise standard.

The Certified EIR determined that groundborne vibration from project construction activities would cause intermittent, localized intrusion; however, vibration levels from the approved project’s shortterm construction activities would not exceed the barely perceptible human response (annoyance) threshold. Therefore, the approved project’s short-term construction activities would not result in exposure of persons to or generation of excessive groundborne vibration or groundborne noise levels.

Thus, it was concluded that impacts are less than significant.

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The project site does not lie within an airport land use plan, or within two miles of a public or private airport or public use airport. Accordingly, the Certified EIR determined that the project would not expose people residing of working in the project area to excessive airport-related noise levels.

Approved Project Mitigation Measures
MM 4.11-1Prior to issuance of any grading and building permits, the City of Lancaster shall review grading and building plans to ensure the following notes are included on the plans. Project contractors shall be required to comply with these notes and maintain written records of such compliance that can be inspected by the City of Lancaster upon request.
a) All construction activities and haul truck deliveries shall adhere to Chapter 8.24.040 of the City of Lancaster Municipal Code, which prohibits construction activities that make loud noise from occurring 8:00 p.m. and 7:00 a.m. and on Sundays within five hundred (500) feet of an occupied dwelling, apartment, hotel, mobile home or other place of residence.
b) All construction equipment, fixed or mobile, shall be equipped with properly operating and maintained mufflers, consistent with manufacturer’s standards. The construction contractors shall place all stationary equipment so that emitted noise is directed away from the noise sensitive receivers nearest the Project site. c) Construction equipment staging areas shall be located such that a minimum distance of 100 feet is maintained between construction-related noise sources and noise-sensitive receivers.
d) The construction contractor shall design a haul route exhibit that includes delivery routes that minimize the exposure of sensitive land uses or residential dwellings to delivery truck-related noise.

MM 4.11-2Minimum 6-foot-high noise barriers for outdoor living areas (rear yards) shall be constructed for residential lots located adjacent to Avenue K, 70th Street West, 65th Street West, and Avenue K. The noise barriers shall be constructed so that the top of each wall extends to the recommended height above the pad elevation of the lot it is shielding. When the road is elevated above the pad elevation, the barrier shall extend to the recommended height above the highest point between the residential home and the road. The barriers shall provide a weight of at least 4 pounds per square foot of face area with no decorative cutouts or line-of-sight openings between shielded area and the roadways. The barriers shall present a solid face from top to bottom. Unnecessary openings or decorative cutouts shall not be made and all gaps (except for weep holes) shall be filled with grout or caulking. The noise barriers shall be constructed of a) masonry block; b) stucco veneer over wood framing (or foam core) or 1-inch thick tongue and groove wood of sufficient weight per square foot; c) glass (1/4-inch thick), or other transparent material with sufficient weight per square foot; d) earthen berm; or e) any combination of these construction materials.

AVANTI NORTH PROJECT EIR ADDENDUM

CITY OF LANCASTER
December 2022 Page 35
MM 4.11-3Homes located on the following lots shall be required to implement the conditions specified below.
 lots 14 to 33, 407 to 424, and 485 to 501 adjacent to Avenue K;  lots 34, 35, 49, 50, 65, 66, 81, 82, 171 to 191 adjacent to 70th Street West;  lots 471 to 484, 682 to 693 adjacent to 65th Street West;  lots 192, 206 to 216, 298 to 304, 640, 641, 652, 653, 664, 665, 671 to 681 adjacent to Avenue K8. a) Windows: All windows and sliding glass doors shall be well fitted, well weather-stripped assemblies and shall have a minimum sound transmission class (STC) rating of 27. b) Doors: All exterior doors shall be well weather-stripped solid core assemblies at least one and three-fourths-inch thick.
c) Roof: Roof sheathing of wood construction shall be well fitted or caulked plywood of at least one-half inch thick. Ceilings shall be well fitted, well-sealed gypsum board of at least one-half inch thick.
d) Attic: Attic vents should be oriented away from Avenue K, 70th Street West, 65th Street West, and Avenue K-8. If such an orientation cannot be avoided, then an acoustical baffle shall be placed in the attic space behind the vents. Insulation with at least a rating of R-19 shall be used in the attic space.
e) Ventilation: A means of mechanical ventilation is required. When any habitable room is in use, arrangements shall be such that circulated air is received when any exterior door(s) or window(s) are closed. A forced air circulation system (e.g. air conditioning) or active ventilation system (e.g. fresh air supply) shall be provided which satisfies the requirements of the Uniform Mechanical Code.

Proposed Project Impact Analysis
According to the Noise Assessment completed for the proposed project, the proposed project would not substantially increase operational noise levels from the approved project. The Project Description in the 2016 Noise Impact Analysis for the approved project was based on 758 residential dwelling units; however, the Certified EIR was approved with 753 dwelling units (5 less dwelling units than was indicated in the technical report). A 2022 Noise Assessment prepared for the proposed project (Appendix E) uses the 758 dwelling units when discussing the approved project and therefore, indicates an increase of 120 dwelling units, consistent with the proposed project dwelling unit increase. As with the approved project, the proposed project is not expected to include any specific type of operational noise sources beyond the typical noise sources associated with similar residential land uses in the project study area. Additionally, residential land uses are typically considered noise‐sensitive land uses and not noise generating land uses, such as industrial and large commercial and recreational land uses.

AVANTI NORTH PROJECT EIR ADDENDUM

CITY OF LANCASTER

No noise impacts associated with aircraft noise were identified for the approved project and no new impacts would be created by the proposed project. With implementation of the construction noise abatement measures identified for the approved project, noise impacts for the proposed project would remain less than significant. (Urban Crossroads, 2022b, pp. 1 and 2) For Existing without Project conditions, the exterior noise levels along road segments in the study area would range from 56.4 to 72.6 dBA CNEL. Existing with Proposed Project conditions noise levels would range from 56.4 to 72.7 dBA CNEL. Under an existing conditions environment, no roadway segments would experience a significant unmitigated exterior noise level impact due to the proposed project’s contribution to off-site traffic volumes (Table 5) (Urban Crossroads, 2022b, p. 8). In comparison, the approved project was projected to result in significant an unmitigated transportation noise impacts in the near term along several roadway segments; because time has passed and noise levels have changed, this changed circumstance has resulted in an alleviation of the previously identified significant near-term impact. Therefore, noise impacts from the proposed project in an Existing plus Project condition would be less than significant, whereas the Certified EIR disclosed a significant and unmitigable impact.

For an apples-to-apples comparison to the approved project information presented in the Certified EIR, a Year 2020 analysis also was conducted. For Year 2020 without Project conditions, the exterior noise levels would range from 62.8 to 73.4 dBA CNEL. Year 2020 with Proposed Project conditions exterior noise levels would range from 62.8 to 73.5 dBA CNEL. All road segments would experience a less than significant 0.6 dBA CNEL or less increase or less, as shown in Table 6, except for the segment of Avenue K east of 62nd Street West, which would experience an increase of 1.3 dBA CNEL, which is still less than significant (Urban Crossroads, 2022b, p. 9). Therefore, noise impacts from the Proposed Project in a Year 2020 plus Project condition would be less than significant, which is the same conclusion reached by the Certified EIR.

There are no new potentially significant impacts associated with the proposed project, and an alleviation of the approved project’s reported significant and unmitigable near-term traffic noise impact. The proposed project would result in less than significant noise impacts.

Proposed Project Mitigation Measures
The approved project mitigation measures are applicable to the proposed project as originally adopted and would reduce potential on-site construction-level noise level impacts to less than significant levels.

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CITY OF LANCASTER
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Table 5Existing Plus Proposed Project Conditions Noise Level Increases ID Road Segment
CNEL at Adjacent Land Use
(dBA) Potential
Significant
Impact? Without 1
Project
With
Project
Project
Addition
1 70th Street West n/o Avenue K 60.1 60.9 0.8 No
2 70th Street West s/o Avenue K 62.4 62.7 0.3 No
3 70th Street West s/o DWY 1 62.4 62.7 0.3 No
4 70th Street West s/o Avenue K‐8 62.4 63.0 0.6 No
5 70th Street West s/o Avenue L 64.4 64.7 0.3 No
6 60th Street West n/o Avenue K 66.7 66.9 0.2 No
7 60th Street West s/o Avenue K 67.9 68.1 0.2 No
8 60th Street West s/o Avenue K‐4 67.9 68.0 0.1 No
9 60th Street West s/o Avenue K‐8 67.4 68.7 1.3 No
10 60th Street West s/o Avenue L 67.6 67.7 0.1 No
11 Avenue K w/o 70th Street West 61.5 61.5 0.0 No
12 Avenue K e/o 70th Street West 62.2 62.5 0.3 No
13 Avenue K e/o DWY 2 61.2 62.3 1.1 No
14 Avenue K e/o 62nd Street West 63.1 65.9 2.8 No
15 Avenue K e/o 60th Street West 64.9 66.8 1.9 No
16 Avenue K e/o 50th Street West 65.9 67.2 1.3 No
17 Avenue K e/o 45th Street West 67.2 68.1 0.9 No
18 Avenue K e/o 40th Street West 68.2 68.9 0.7 No
19 Avenue K e/o 35th Street West 70.4 70.7 0.3 No
20 Avenue K e/o 30th Street West 71.0 71.2 0.2 No
21 Avenue K e/o 25th Street West 70.2 70.4 0.2 No
22 Avenue K e/o 20th Street West 72.6 72.7 0.1 No
23 Avenue K e/o 17th Street West 71.7 71.7 0.0 No
24 Avenue K e/o SR‐14 NB Ramp 72.6 72.6 0.0 No
25 Avenue L w/o 70th Street West 56.4 56.4 0.0 No
26 Avenue L e/o 70th Street West 58.8 58.8 0.0 No
27 Avenue L e/o 60th Street West 62.5 64.1 1.6 No
28 Avenue L e/o 55th Street West 64.2 65.4 1.2 No
29 Avenue L e/o 50th Street West 65.3 66.2 0.9 No
30 Avenue L e/o 45th Street West 68.9 69.6 0.7 No
31 Avenue L e/o 40th Street West 69.8 70.4 0.6 No
32 Avenue L e/o 35th Street West 69.7 70.3 0.6 No
33 Avenue L e/o 30th Street West 70.2 70.7 0.5 No
34 Avenue L e/o 30th Street West 70.2 70.7 0.5 No
35 Avenue L e/o 25th Street West 70.4 70.9 0.5 No
36 Avenue L e/o 15th Street West 70.9 71.3 0.4 No
37 Avenue L e/o SR‐14 NB Ramp 71.8 71.9 0.1 No
38 Avenue L e/o SR‐14 SB Ramp 71.6 71.6 0.0 No
Significance Criteria: >60 CNEL +5 dBA, 60‐65 CNEL +3dBA, <65 CNEL = +1.5 dBA. Source: (Urban Crossroads, 2022b, p. 8).

AVANTI NORTH PROJECT EIR ADDENDUM

CITY OF LANCASTER

Table 6Year 2020 Plus Proposed Project Conditions Noise Level Increases ID Road Segment
CNEL at Adjacent Land Use
(dBA) Potential
Significant
Impact? Without 1
Project
With
Project
Project
Addition
1 70th Street West n/o Avenue K 65.2 65.4 0.2 No
2 70th Street West s/o Avenue K 67.9 68.0 0.1 No
3 70th Street West s/o DWY 1 67.9 67.9 0.0 No
4 70th Street West s/o Avenue K‐8 67.7 67.9 0.2 No
5 70th Street West s/o Avenue L 68.2 68.3 0.1 No
6 60th Street West n/o Avenue K 70.5 70.5 0.0 No
7 60th Street West s/o Avenue K 72.4 72.5 0.1 No
8 60th Street West s/o Avenue K‐4 72.4 72.5 0.1 No
9 60th Street West s/o Avenue K‐8 72.2 72.7 0.5 No
10 60th Street West s/o Avenue L 71.7 71.8 0.1 No
11 Avenue K w/o 70th Street West 62.8 62.8 0.0 No
12 Avenue K e/o 70th Street West 67.9 68.0 0.1 No
13 Avenue K e/o DWY 2 66.9 67.2 0.3 No
14 Avenue K e/o 62nd Street West 67.6 68.9 1.3 No
15 Avenue K e/o 60th Street West 70.0 70.6 0.6 No
16 Avenue K e/o 50th Street West 70.4 70.9 0.5 No
17 Avenue K e/o 45th Street West 70.8 71.2 0.4 No
18 Avenue K e/o 40th Street West 71.2 71.5 0.3 No
19 Avenue K e/o 35th Street West 72.0 72.2 0.2 No
20 Avenue K e/o 30th Street West 72.3 72.5 0.2 No
21 Avenue K e/o 25th Street West 71.5 71.6 0.1 No
22 Avenue K e/o 20th Street West 73.4 73.5 0.1 No
23 Avenue K e/o 17th Street West 72.4 72.5 0.1 No
24 Avenue K e/o SR‐14 NB Ramp 73.0 73.0 0.0 No
25 Avenue L w/o 70th Street West 63.9 63.9 0.0 No
26 Avenue L e/o 70th Street West 65.0 65.0 0.0 No
27 Avenue L e/o 60th Street West 68.5 68.9 0.4 No
28 Avenue L e/o 55th Street West 69.1 69.5 0.4 No
29 Avenue L e/o 50th Street West 69.3 69.7 0.4 No
30 Avenue L e/o 45th Street West 72.4 72.7 0.3 No
31 Avenue L e/o 40th Street West 72.8 73.1 0.3 No
32 Avenue L e/o 35th Street West 72.7 73.0 0.3 No
33 Avenue L e/o 30th Street West 72.8 73.1 0.3 No
34 Avenue L e/o 30th Street West 72.8 73.1 0.3 No
35 Avenue L e/o 25th Street West 72.8 73.1 0.3 No
36 Avenue L e/o 15th Street West 73.1 73.3 0.2 No
37 Avenue L e/o SR‐14 NB Ramp 73.0 73.1 0.1 No
38 Avenue L e/o SR‐14 SB Ramp 72.0 72.0 0.0 No
1 Significance Criteria: >60 CNEL +5 dBA, 60‐65 CNEL +3dBA, <65 CNEL = +1.5 dBA. (Urban Crossroads, 2022b, p. 9).

AVANTI NORTH PROJECT EIR ADDENDUM

CITY OF LANCASTER
December 2022 Page 39
MM 4.11-1Prior to issuance of any grading and building permits, the City of Lancaster shall review grading and building plans to ensure the following notes are included on the plans. Project contractors shall be required to comply with these notes and maintain written records of such compliance that can be inspected by the City of Lancaster upon request.
a) All construction activities and haul truck deliveries shall adhere to Chapter 8.24.040 of the City of Lancaster Municipal Code, which prohibits construction activities that make loud noise from occurring 8:00 p.m. and 7:00 a.m. and on Sundays within five hundred (500) feet of an occupied dwelling, apartment, hotel, mobile home or other place of residence. b) All construction equipment, fixed or mobile, shall be equipped with properly operating and maintained mufflers, consistent with manufacturer’s standards. The construction contractors shall place all stationary equipment so that emitted noise is directed away from the noise sensitive receivers nearest the Project site. c) Construction equipment staging areas shall be located such that a minimum distance of 100 feet is maintained between construction-related noise sources and noise-sensitive receivers. d) The construction contractor shall design a haul route exhibit that includes delivery routes that minimize the exposure of sensitive land uses or residential dwellings to delivery truckrelated noise.

Although the proposed project results in less than significant transportation noise impacts, the City as opted to retain the following mitigation measures as presented in the Certified EIR. The lot numbers have been updated to represent the lots on the revised TTM No. 73507.

MM 4.11-2Minimum 6-foot high noise barriers for outdoor living areas (rear yards) shall be constructed for residential lots located adjacent to Avenue K, 70th Street West, 65th Street West, and Avenue K. The noise barriers shall be constructed so that the top of each wall extends to the recommended height above the pad elevation of the lot it is shielding. When the road is elevated above the pad elevation, the barrier shall extend to the recommended height above the highest point between the residential home and the road. The barriers shall provide a weight of at least 4 pounds per square foot of face area with no decorative cutouts or line-of-sight openings between shielded area and the roadways. The barriers shall present a solid face from top to bottom. Unnecessary openings or decorative cutouts shall not be made and all gaps (except for weep holes) shall be filled with grout or caulking. The noise barriers shall be constructed of a) masonry block; b) stucco veneer over wood framing (or foam core) or 1-inch thick tongue and groove wood of sufficient weight per square foot; c) glass (1/4-inch thick), or other transparent material with sufficient weight per square foot; d) earthen berm; or e) any combination of these construction materials.

MM 4.11-3Homes located on the following lots shall be required to implement the conditions specified below.

AVANTI NORTH PROJECT EIR ADDENDUM

CITY OF LANCASTER

 lots 1 to 20, 469 to 486, and 487 to 508 adjacent to Avenue K;  lots 21 to 29 and 162 to 180 adjacent to 70th Street West;  lots 646 to 660 and 687 to 702 adjacent to 65th Street West;  lots 181 to 198, 350 to 355, 703 to 717, and 827 to 840 adjacent to Avenue K-8. a) Windows: All windows and sliding glass doors shall be well fitted, well weather-stripped assemblies and shall have a minimum sound transmission class (STC) rating of 27. b) Doors: All exterior doors shall be well weather-stripped solid core assemblies at least one and three-fourths-inch thick.
c) Roof: Roof sheathing of wood construction shall be well fitted or caulked plywood of at least one-half inch thick. Ceilings shall be well fitted, well-sealed gypsum board of at least one-half inch thick.
d) Attic: Attic vents should be oriented away from Avenue K, 70th Street West, 65th Street West, and Avenue K-8. If such an orientation cannot be avoided, then an acoustical baffle shall be placed in the attic space behind the vents. Insulation with at least a rating of R-19 shall be used in the attic space.
e) Ventilation: A means of mechanical ventilation is required. When any habitable room is in use, arrangements shall be such that circulated air is received when any exterior door(s) or window(s) are closed. A forced air circulation system (e.g. air conditioning) or active ventilation system (e.g. fresh air supply) shall be provided which satisfies the requirements of the Uniform Mechanical Code.

4.1.12 Population and Housing
Approved Project Impact Analysis
The Certified EIR determined that the approved project would increase the City’s population by approximately 2,425 persons. This increase represents only a 1.5 percent increase over the California Department of Finance’s (DOF’s) estimated 2015 City of Lancaster population of 160,784 persons.

Moreover, the project site was designated for residential development by the City’s General Plan and was previously approved for the development of housing (which was never built); therefore, the City anticipated population growth on the project site. Thus, the projected population of the approved project is within the City’s population projection, and impacts were determined to be less than significant.

The project site is vacant and undeveloped and, therefore, implementation of the approved project would not result in the displacement of a substantial amount of existing housing nor result in the need for construction of replacement housing elsewhere. It was, therefore, concluded by the Certified EIR that no impacts associated with housing or population displacement would occur as a result of the approved project.

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CITY OF LANCASTER
December 2022 Page 41
Approved Project Mitigation Measures
No mitigation measures were required for the approved project regarding population and housing.

Proposed Project Impact Analysis
As stated in the City of Lancaster’s General Plan, SCAG’s forecast growth projects anticipate that the City’s 2000 population of 119,416 persons is expected to increase by approximately 117 percent to an estimated 259,696 residents by 2030. Additionally, the number of housing units in the City is expected to increase from 38,289 households in 2000 to 81,403 units by 2030. This increase in housing represents an approximately 113 percent increase between 2000 and 2030. (City of Lancaster, 2009, Table 1-2) According to the 2020 State Department of Finance (DOF) population and housing estimates, 3.16 persons are estimated per household (DOF, 2020). The approved project used the 2015 DOF population and housing estimate of 3.22 persons estimated per household (DOF, 2015). As shown in Table 7, Estimated Population Growth, in accordance with the General Plan’s future buildout projections, the proposed project would result in a population of 2,759 persons, which is an increase of 334 persons from the approved project’s estimated population of 2,425. The proposed project’s changed population increase of 334 persons is only 0.13 percent of SCAG’s estimated population of 259,696 residents in 2030. Thus, the proposed project would not result in substantial unplanned population growth either directly or indirectly, and population growth as a result of the proposed project would be within SCAG’s forecast growth projections for the City.

Table 7Estimated Population Growth
Approved Project Proposed Project Net Change
Land Use Category

2.1-6.5 du/ac
Urban Residential
(2.1-6.5R)

2.1-6.5 du/ac
Urban Residential
(2.1-6.5R)
-
Average Household Size
(per dwelling unit) 3.221 3.162 -0.06
Proposed Housing Units 753 873 +120
Population 2,425 2,759 +3343
1 Source: (DOF, 2015) 2
Source: (DOF, 2020) 3 The 120 additional units would generate a population estimate of 379 persons (3.16 x 120 = 379), but in comparison to the population projection reported in the Certified EIR, which used a higher person per unit factor (3.22 persons per household instead of 3.16 persons per household), the difference is 334 persons.

The proposed project would add a maximum of 120 residential units for a total of 873 residential units, compared to the 753 residential units under the approved project. Using the 2020 DOF population and housing estimates, an increase of 120 residential units would increase the population by approximately 379 persons (3.16 x 120 = 379). The proposed project is consistent with the General Plan land use

AVANTI NORTH PROJECT EIR ADDENDUM

CITY OF LANCASTER

designation, therefore, the population growth associated with the 120 additional residential units is consistent with the growth forecasts in the General Plan. Impacts to population and housing would not be substantially more severe as a result of the proposed project than as a result of the approved project.

There are no new potentially significant impacts associated with the proposed project; therefore, the proposed project would result in less than significant impacts to population and housing.

Proposed Project Mitigation Measures
No mitigation measures are required for the proposed project regarding population and housing.

4.1.13 Public Services
Approved Project Impact Analysis
Fire Protection
The Certified EIR determined that the approved project would be served by the LACFD Station No. 130, located approximately 4.2 miles northeast of the project site. In accordance with Chapter 15.76 of the City’s Municipal Code, the approved project would pay development fees to mitigate impacts to fire protection and emergency medical services and facilities to the LACFD. It was determined that approved project implementation would not result in or require new or expanded fire protection facilities and a less than significant impact to fire protection facilities would occur.

Police Protection
The project site would receive police protection services from the LASD. Based on LASD’s recommended staffing levels, the Sheriff Department determined that the approved project would result in the need for an additional three deputies to service the approved project; however, the Lancaster Station would not require any physical modifications to service the approved project. The Certified EIR determined that with the payment of mandatory development impact fees pursuant to City of Lancaster Municipal Code Section 15.64.130, the approved project would result in less than significant impacts associated with police protection services.

Schools
Residents and school-age children associated with the project site would attend schools in the Westside Union School District (Westside) and Antelope Valley Union High School District (AVUHSD). The project applicant would be required to contribute fees to Westside and the AVUHSD in accordance with the Leroy F. Green School Facilities Act of 1998 (SB 50 Greene), California Government Code §§65995.5–65998. The Certified EIR determined that the payment of school mitigation impact fees authorized by SB 50 is deemed to provide “full and complete mitigation of impacts” on school facilities from the development of real property (California Government Code Section 65995) and therefore, impacts would be less than significant.

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CITY OF LANCASTER
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Parks
The approved project would result in the on-site construction of two new public neighborhood parks on a total of 10.4 acres, which the Certified EIR determined would meet most of the demand for the recreational needs of the population that would be generated by the residents of the approved project.

Although the approved project would not meet the standard of 5.0 acres of on-site park land per 1,000 residents, the inclusion of the open space and pedestrian paths for passive recreational use would ensure that the recreation needs of the approved project are met on-site, and would substantially conform to the General Plan’s park land objectives. The project applicant would be required to pay mandatory fees per City of Lancaster Municipal Code Chapter 15.64.90, Park Acquisition Fees, and per Municipal Code Chapter 15.64.100, Park Development Fees which would accommodate additional park acquisition and development elsewhere in the City of Lancaster. Therefore, the Certified EIR concluded that impacts associated with the provision of park facilities would be less than significant.

Approved Project Mitigation Measures
No mitigation measures were required for the approved project regarding public services.

Proposed Project Impact Analysis
Fire Protection
The proposed project would add a maximum of 120 residential units for a total of 873 residential units, compared to the 753 residential units under the approved project. The project site receives fire protection services from the LACFD. Similar to the approved project, the proposed project is approximately 4.2 miles southwest of Station No. 130, located at 44558 40th Street West, which would provide a response time of 6-8 minutes. Impacts to fire protection services would not be substantially more severe as a result of the proposed project than as a result of the approved project. As with the approved project, implementation of the proposed project would require the project applicant to pay development fees to mitigate impacts to fire protection and emergency medical services and facilities to the LACFD to maintain adequate levels of service in accordance with Chapter 15.76 of the City’s Municipal Code. There are no new potentially significant impacts associated with the proposed project; therefore, the proposed project would result in less than significant impacts to fire protection services.

Police Protection
The proposed project would add a maximum of 120 residential units, which would increase the population by approximately 379 persons based on the DOF’s estimate of persons per household. The project site receives police protection services from the LASD. According to the General Plan EIR, the LACSD recommends a staffing level of one officer per 1,000 people (City of Lancaster, 2008). Because the proposed project would only add approximately 379 persons, the LASD’s staffing levels determined for the approved project would be sufficient. Impacts to police protection services would not be substantially more severe as a result of the proposed project than as a result of the approved project. As with the approved project, implementation of the proposed project would require the project

AVANTI NORTH PROJECT EIR ADDENDUM

CITY OF LANCASTER

applicant to pay mandatory development impact fees pursuant to City of Lancaster Municipal Code Section 15.64.130. There are no new potentially significant impacts associated with the proposed project; therefore, the proposed project would result in lessthan significant impacts to police protection services.

Schools
Residents and school-age children associated with the proposed project would attend schools in the Westside and the AVUHSD. The proposed project would add an additional 120 residential units as compared to the approved project. Impacts to schools would not be substantially more severe as a result of the proposed project than as a result of the approved project. As with the approved project, implementation of the proposed project would require the project applicant to contribute fees to Westside and the AVUHSD in accordance with the Leroy F. Green School Facilities Act of 1998 (SB 50 Greene), California Government Code §§65995.5–65998. There are no new potentially significant impacts associated with the proposed project; therefore, the proposed project would result in less than significant impacts to schools.

Parks
As shown in Table 2, Detailed Land Use Summary, the overall acreage of parks and open space would be decreased by 1.6 acres with the proposed project compared to the approved project. Similar to the approved project, two parks are proposed, one on the west side of the development and one on the east side. The park on the west side of the development would be decreased by 2.1 acres with the proposed project from 6.3 acres to 4.2 acres; however, the park on the east side would be increased by 1.9 acres from 4.1 acres to 6.0 acres. The two open space/basins would be decreased in size by a total of 1.4 acres with the proposed project. The northern open space/basin would decrease by 0.7-acre from 5.7 acres to 5.0 acres and the southern open space/basin would decrease by 0.7-acre, from 6.1 acres to 5.4 acres. Similar to the approved project, although the proposed project would not meet the standard of

5.0 acres of on-site park land per 1,000 residents, the inclusion of the open space and pedestrian paths for passive recreational use would ensure that the recreation needs of the proposed project are met onsite, and would substantially conform to the General Plan’s park land objectives. As with the approved project, implementation of the proposed project would require the project applicant to pay mandatory fees per City of Lancaster Municipal Code Chapter 15.64.90, Park Acquisition Fees, and per Municipal Code Chapter 15.64.100, Park Development Fees which would accommodate additional park acquisition and development elsewhere in the City of Lancaster. Impacts to parks would not be substantially more severe as a result of the proposed project than as a result of the approved project.

There are no new potentially significant impacts associated with the proposed project; therefore, the proposed project would result in less than significant impacts to parks.

Proposed Project Mitigation Measures
No mitigation measures are required for the proposed project regarding public services.

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CITY OF LANCASTER
December 2022 Page 45

4.1.14 Recreation
Approved Project Impact Analysis
The Certified EIR determined that the approved project could generate an estimated population of 2,425 residents. Per the City’s current established park standard of 5.0 acres per 1,000 residents, the approved project would generate a need for approximately 12.1 acres of parkland to meet the City’s park standard of 5.0 acres per 1,000 residents. The approved project would provide two on-site public neighborhood parks that would provide a combined total of 10.4 acres of parkland, which would be

1.7 acres below the City’s park standard. However, the approved project would provide additional onsite open space areas and trails that would be available for active and passive recreational purposes.

The project applicant would also be required to pay mandatory fees per City of Lancaster Municipal Code Chapter 15.64.90, Park Acquisition Fees, and per Municipal Code Chapter 15.64.100, Park Development Fees. Although the approved project could result in an increased use of off-site parks in the area, it is unlikely that future residents of the approved project would frequently utilize off-site existing parks due to the distance of the nearest parks (approximately 3.0 miles from the project site) and because the approved project would include on-site parks. Accordingly, because the approved project would be expected to provide an adequate amount of recreational amenities on-site, it was determined that the approved project would not result in a physical deterioration to existing neighborhood and regional parks and impacts to existing recreational facilities would be less than significant.

No significant impacts were identified in the Certified EIR with respect to the construction and operation of the recreational facilities on the project site and, therefore, it was determined that impacts would be less than significant.

Approved Project Mitigation Measures
No mitigation measures were required for the approved project regarding recreation.

Proposed Project Impact Analysis
As shown in Table 2, Detailed Land Use Summary, the overall acreage of parks and open space would be decreased by 1.6 acres with the proposed project compared to the approved project. Similar to the approved project, two parks are proposed, one on the west side of the development and one on the east side. The park on the west side of the development would be decreased by 2.1 acres with the proposed project from 6.3 acres to 4.2 acres; however, the park on the east side would be increased by 1.9 acres from 4.1 acres to 6.0 acres. The two open space/basins would be decreased with the proposed project.

The northern open space/basin would decrease by 0.7-acre from 5.7 acres to 5.0 acres and the southern open space/basin would decrease in size by 0.7-acre, from 6.1 acres to 5.4 acres. Similar to the approved project, although the proposed project would not meet the standard of 5.0 acres of on-site park land per 1,000 residents, the inclusion of the open space and pedestrian paths for passive

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recreational use would ensure that the recreation needs of the proposed project are met on-site, and would substantially conform to the General Plan’s park land objectives. As with the approved project, implementation of the proposed project would require the project applicant to pay mandatory fees per City of Lancaster Municipal Code Chapter 15.64.90, Park Acquisition Fees, and per Municipal Code Chapter 15.64.100, Park Development Fees which would accommodate additional park acquisition and development elsewhere in the City of Lancaster. Impacts to parks would not be substantially more severe as a result of the proposed project than as a result of the approved project. There are no new potentially significant impacts associated with the proposed project; therefore, the proposed project would result in less than significant impacts to recreational facilities.

Proposed Project Mitigation Measures
No mitigation measures are required for the proposed project regarding recreation.

4.1.15 Transportation and Traffic
Approved Project Impact Analysis
The Certified EIR analyzed the project traffic when added to Existing (2015) traffic volumes. This indicated that there would be a significant direct impact at two study area intersections because the addition of approved project traffic would change the level of service (LOS) of the intersections from an acceptable LOS to a deficient LOS of E or F in either the AM peak hour, PM peak hour, or both peak hours. Additionally, the addition of approved project traffic to the Existing (2015) condition would result in a significant direct impact along one roadway segment.

The Certified EIR also analyzed traffic forecasts for Opening Year Cumulative (2020) conditions both With the Approved Project and Without the Approved Project. With the addition of the approved project traffic, deficiencies would occur at 16 intersections, resulting in a cumulatively considerable impact. The Certified EIR indicated that of the roadway segments analyzed, the approved project would not result in a cumulatively considerable contribution toward an LOS deficiency under the Opening Year Cumulative (2020) conditions scenario and the impacts would be less than significant.

Four intersections within the approved project study area, along with the SR-14 Freeway, were determined to be part of the Los Angeles County CMP roadway system; however, because the approved project would contribute fewer than 50 peak hour trips to CMP freeway segments beyond the project’s study area, the approved project’s effect to CMP freeway facilities would be less than cumulatively considerable.

The Certified EIR analyzed the Existing plus Approved Project traffic conditions and it was determined that there would be less than significant impacts to off-ramps, freeway segments, and freeway merge/diverge areas within the study area. Analysis of the Opening Year Cumulative traffic determined

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that the approved project’s contribution to off-ramp queuing, freeway segments, and freeway merge/diverge areas would be cumulatively considerable.

It was determined by the Certified EIR that the approved project was outside of the planning areas of any airport facilities and that the relatively small scale of the development in relation to the demand for passenger air travel within the Greater Los Angeles area would not result in a measurable increase in air traffic levels such that air traffic patterns would change or cause a safety risk. Therefore, it was determined that impacts associated air traffic would be less than significant.

The Certified EIR concluded that the approved project would not create or substantially increase safety hazards due to a design feature or incompatible use and would not result in inadequate emergency access during long-term operation. During the approved project’s construction phase, no temporary hazards were reasonably foreseeable; however, all Approved Project-related construction traffic would be required to comply with a temporary traffic control plan that meets the applicable requirements of the California Manual on Uniform Traffic Control Devices. Although impacts associated with both these issues would be less than significant, compliance with the traffic control plan would be assured by Mitigation Measure 4.15-1.

No pedestrian facilities or bikeways are located on the project site; however, a Class II bike lane located near the southeast corner of the project site. It was determined that the approved project would not adversely affect this existing bike path nor would the approved project conflict with the future implementation of any of the planned bicycle facilities along off-site roadways in the project area. The Certified EIR concluded that the approved project had no potential to conflict with adopted policies, plans, or programs regarding public transit, bicycle, or pedestrian facilities, or otherwise decrease the performance or safety of such facilities and that impacts would be less than significant.

Approved Project Mitigation Measures
MM 4.15-1Prior to the issuance of grading permits, the Project Applicant shall prepare and the City of Lancaster shall approve a temporary traffic control plan to be implemented during the Project’s construction. The temporary traffic control plan shall comply with the applicable requirements of the California Manual on Uniform Traffic Control Devices. A requirement to comply with the temporary traffic control plan shall be noted on all grading and building plans and also shall be specified in bid documents issued to prospective construction contractors.

MM 4.15-2Prior to the issuance of the first certificate of occupancy for the Project, the City of Lancaster Engineering Department shall verify that a striped median for 2-stage gap clearance has been added at the 55th Street West / West Avenue L intersection. If this improvement has not been installed, the Project Applicant shall make the improvements. The improvement may be eligible for fee credits or reimbursements through City Ordinance No. 339 and Resolution No. 02-171 which establishes

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impact fees relating to the installation and upgrade of traffic signals (to be determined at the City’s discretion).

MM 4.15-3Prior to the issuance of the first certificate of occupancy for the Project, the City of Lancaster Engineering Department shall verify that a single lane roundabout has been added to the 50th Street West / West Avenue K intersection. If the intersection improvement has not been installed, the Project Applicant shall install the roundabout. The Project Applicant may be eligible for a fee credit or reimbursement through City Ordinance No. 507 and Resolution No. 89-193, which establishes traffic impact fees (to be determined at the City’s discretion).

MM 4.15-4The Project shall comply with the mandatory requirements of the City of Lancaster Ordinance No. 507 and Resolution No. 89-193, which establishes traffic impact fees. The purpose of the traffic impact fee is to collect funds to provide for street construction, including roadway purchase when necessary, utility relocation and installation, and other necessary items to complete the roadway construction through the City as determined by the Department of Public Works. Improvements constructed by Project may be eligible for a fee credit or reimbursement through the program (to be determined at the City’s discretion).

MM 4.15-5The Project shall comply with the mandatory requirements of the City of Lancaster Ordinance No. 339 and Resolution No. 02-171 which establishes impact fees relating to the installation and upgrade of traffic signals. The traffic signal fee is intended to provide new traffic signals and/or modify existing traffic signals throughout the City as determined by the Department of Building and Engineering Services. Signals installed by the Project may be eligible for a fee credit or reimbursement through the program (to be determined at the City’s discretion).

MM 4.15-6The Project shall comply with the mandatory requirements of the City of Lancaster Ordinance No. 850 and Resolution No. 06-163 and 08-99, which establishes traffic impact fees for Los Angeles County, which are required for projects within the City of Lancaster. The Los Angeles County traffic impact fee is intended to mitigate the adversely impacted existing local street/road system adjacent to the City boundaries within the County of Los Angeles.

MM 4.15-7In the event that any of the intersection improvements identified in the Project’s Traffic Impact Analysis Report prepared by Urban Crossroads dated September 26, 2016 are not covered by one of the fee programs identified in MM 4.15-4, MM 4.15-5, or MM 4.15-6, the Project Applicant shall make a fair-share fee payment to the City of Lancaster prior to issuance of a certificate of occupancy, based on the Project’s percentage of traffic that would utilize the intersection in 2020, as identified in Table 1-5 and Table 1-7 of the same report. Payments shall be based on nexus requirements contained in the Mitigation Fee Act (Govt. Code § 66000 et seq.) and 14 Cal. Code of Regs. § 15126.4(a)(4) and any other applicable provisions of law. Fair share funds shall only be collected by the City for those improvements that are not included in established fee programs identified in MM 4.15-4, MM 4.15-5, or MM 4.15-6. The City of Lancaster shall determine, at its

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discretion, which intersections/ facilities are covered by the fee programs identified in MM 4.15-4, MM 4.15-4, and MM 4.15-5.

Proposed Project Impact Analysis
According to a traffic assessment prepared for the proposed project (Appendix F), the proposed project is anticipated to generate 8,290 two-way trip-ends per day with 615 AM peak hour trips and 827 PM peak hour trips (Urban Crossroads, 2022a, p. 1). Compared to the 2016 Traffic Study, there are no additional anticipated traffic deficiencies for the study area intersections or roadway segments under Existing Plus Project (E+P) traffic conditions (Urban Crossroads, 2022a, pp. 2 and 4). Additionally, there are no movements that are anticipated to experience queuing issues during the peak hours under E+P traffic conditions; study area freeway segments are anticipated to operate at an acceptable Level of Service (LOS) during the peak hours; and there are no additional improvements necessary to address the intersection deficiencies (Urban Crossroads, 2022a, pp. 4 - 6). Consistent with the 2016 Traffic Study, no roadway segment improvements have been identified since the peak hour intersection analysis, with improvements, indicates that the intersections on either side of the deficient roadway segments are able to process the peak hour traffic flows (Urban Crossroads, 2022a, p. 6). No improvements to the study area off-ramps or study area freeway segments have been identified since there are no anticipated queuing issues or study area freeway deficiencies under E+P traffic conditions (Urban Crossroads, 2022a, p. 7).

The Opening Year Cumulative (2020) with Project traffic volumes show that there are no additional anticipated traffic deficiencies for the study area intersections, compared to the 2016 Traffic Study (Urban Crossroads, 2022a, p. 7). One additional roadway segment, Avenue K, between 30th Street West and 25th Street West, is anticipated to operate at an unacceptable LOS under Opening Year Cumulative (2020) with Proposed Project traffic conditions (Urban Crossroads, 2022a, p. 9). The intersections on either side of the deficient roadway segments are anticipated to operate at acceptable LOS during the peak hours and would be able to process the peak hour traffic flows; therefore, widening was not recommended for the additional deficient roadway segment (Urban Crossroads, 2022a, p. 11). There are no additional queuing issues anticipated during the peak hours, or additional study area freeway segments or ramp junctions anticipated to operate at an unacceptable LOS during the peak hours under Opening Year Cumulative (2020) With Proposed Project traffic conditions (Urban Crossroads, 2022a, pp. 9-10). Accordingly, there are no additional improvement recommendations as compared to the 2016 Traffic Study and the proposed project would result in less than significant impacts to transportation using a LOS analysis metric.

After certification of the EIR, and in accordance with Senate Bill (SB) 743, the California Natural Resources Agency (CNRA) adopted changes to the CEQA Guidelines in December 2018, which identified that starting on July 1, 2020, vehicle miles traveled (VMT) is the appropriate metric to evaluate a project’s transportation impacts instead of LOS. Although a VMT calculation was not presented in the Certified EIR for purposes of the transportation analysis, trip lengths were reported in the Certified EIR’s Air Quality Technical report as home-work (H-W), home-shop (H-S), and home-

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other (H-O). The CalEEMod default trip lengths (one-way) were reported as H-W = 10.8 miles, H-S =

7.3 miles, and H-O = 7.5 miles. Regardless of the number of residential homes, the trip length per trip would be the same; therefore, there would be no changes to VMT associated with the proposed project’s addition of 120 residential homes. Further, a detailed analysis of VMT is not required in an EIR Addendum when the Certified EIR was certified before VMT became the analysis metric.

Proposed Project Mitigation Measures
The approved project mitigation measures are applicable to the proposed project as originally adopted; and the proposed project would result in less than significant impacts to transportation using a LOS analysis metric and impacts traffic remain significant and unavoidable using a LOS analysis metric.

MM 4.15-1Prior to the issuance of grading permits, the Project Applicant shall prepare and the City of Lancaster shall approve a temporary traffic control plan to be implemented during the Project’s construction. The temporary traffic control plan shall comply with the applicable requirements of the California Manual on Uniform Traffic Control Devices. A requirement to comply with the temporary traffic control plan shall be noted on all grading and building plans and also shall be specified in bid documents issued to prospective construction contractors.

MM 4.15-2Prior to the issuance of the first certificate of occupancy for the Project, the City of Lancaster Engineering Department shall verify that a striped median for 2-stage gap clearance has been added at the 55th Street West / West Avenue L intersection. If this improvement has not been installed, the Project Applicant shall make the improvements. The improvement may be eligible for fee credits or reimbursements through City Ordinance No. 339 and Resolution No. 02-171 which establishes impact fees relating to the installation and upgrade of traffic signals (to be determined at the City’s discretion).

MM 4.15-3Prior to the issuance of the first certificate of occupancy for the Project, the City of Lancaster Engineering Department shall verify that a single lane roundabout has been added to the 50th Street West / West Avenue K intersection. If the intersection improvement has not been installed, the Project Applicant shall install the roundabout. The Project Applicant may be eligible for a fee credit or reimbursement through City Ordinance No. 507 and Resolution No. 89-193, which establishes traffic impact fees (to be determined at the City’s discretion).

MM 4.15-4The Project shall comply with the mandatory requirements of the City of Lancaster Ordinance No. 507 and Resolution No. 89-193, which establishes traffic impact fees. The purpose of the traffic impact fee is to collect funds to provide for street construction, including roadway purchase when necessary, utility relocation and installation, and other necessary items to complete the roadway construction through the City as determined by the Department of Public Works. Improvements constructed by Project may be eligible for a fee credit or reimbursement through the program (to be determined at the City’s discretion).

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MM 4.15-5The Project shall comply with the mandatory requirements of the City of Lancaster Ordinance No. 339 and Resolution No. 02-171 which establishes impact fees relating to the installation and upgrade of traffic signals. The traffic signal fee is intended to provide new traffic signals and/or modify existing traffic signals throughout the City as determined by the Department of Building and Engineering Services. Signals installed by the Project may be eligible for a fee credit or reimbursement through the program (to be determined at the City’s discretion).

MM 4.15-6The Project shall comply with the mandatory requirements of the City of Lancaster Ordinance No. 850 and Resolution No. 06-163 and 08-99, which establishes traffic impact fees for Los Angeles County, which are required for projects within the City of Lancaster. The Los Angeles County traffic impact fee is intended to mitigate the adversely impacted existing local street/road system adjacent to the City boundaries within the County of Los Angeles.

MM 4.15-7In the event that any of the intersection improvements identified in the Project’s Traffic Impact Analysis Report prepared by Urban Crossroads dated September 26, 2016 are not covered by one of the fee programs identified in MM 4.15-4, MM 4.15-5, or MM 4.15-6, the Project Applicant shall make a fair-share fee payment to the City of Lancaster prior to issuance of a certificate of occupancy, based on the Project’s percentage of traffic that would utilize the intersection in 2020, as identified in Table 1-5 and Table 1-7 of the same report. Payments shall be based on nexus requirements contained in the Mitigation Fee Act (Govt. Code § 66000 et seq.) and 14 Cal. Code of Regs. § 15126.4(a)(4) and any other applicable provisions of law. Fair share funds shall only be collected by the City for those improvements that are not included in established fee programs identified in MM 4.15-4, MM 4.15-5, or MM 4.15-6. The City of Lancaster shall determine, at its discretion, which intersections/ facilities are covered by the fee programs identified in MM 4.15-4, MM 4.15-4, and MM 4.15-5.

4.1.16 Utilities and Service Systems
Approved Project Impact Analysis
Wastewater Treatment
The Certified EIR determined that wastewater from the Approved Project would be collected by an onsite sewer infrastructure system and conveyed off-site to the Lancaster Wastewater Reclamation Plant, which lies within the jurisdiction of District 14 of the Sanitation Districts of Los Angeles County. No components of the Approved Project would generate excessive amounts of wastewater or wastewater with excessive pollutants that would require additional wastewater treatment in order to meet the applicable treatment requirements. As such, the Approved Project would not contribute wastewater to the Lancaster Wastewater Reclamation Plant that would have the potential to exceed wastewater treatment requirements and no impact would occur.

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The Lancaster Wastewater Reclamation Plant had a treatment capacity of 18 mgd, as stated in the Certified EIR. It was determined that the approved project would generate approximately 195,780 gallons of wastewater per day, which is a fraction of the LWRP’s current daily capacity of 18 million gallons of wastewater per day. Therefore, the approved project would not require or result in construction of new water treatment facilities or expansion of existing facilities and impacts would be less than significant.

Water Facilities
Water services for the approved project would be provided by Los Angeles County Waterworks District 40 (LACWD) and the approved project would construct new domestic water distribution facilities within the project site that would connect to existing and planned facilities. A water supply assessment prepared for the approved project calculated the water demand at 620 acre feet per year (AFY), which represented 0.7 percent of the total water supply that was projected in 2015 for District 40. Projected water supplies over the next 20 years were determined to exceed the projected water demands, including during dry years, even when including the approved project’s water demand. The project applicant’s acquisition of Nickel Water entitlements would augment the LACWD water supplies, thereby guaranteeing the conveyance of 10,000 AFY to LACWD for approximately 65 years. The 620 AFY demand that would be generated by the approved project would represent only approximately 6.2 percent of the total 10,000 AFY supply of Nickel Water that would be conveyed to LACWD. The project applicant acquired entitlements for domestic water through private contract(s) that are adequate to meet the approved project’s water needs during its lifetime operation and therefore, would not generate any new demand for domestic water on LACWD. The demand for water distribution facilities generated by the approved project would be met with the implementation of a previously approved offsite water pipeline and tank project along with the proposed on-site water facilities; therefore, no additional expansion of the existing water distribution would be required. Impacts were determined to be less than significant.

Stormwater Drainage Facilities
As detailed in the Certified EIR, the approved project would include an engineered system of storm drain facilities designed to follow the natural direction of water flow across the project site. The installation of drainage infrastructure to serve the approved project would not result in any significant physical effects on the environment that were not previous identified in the Certified EIR; therefore, mitigation measures would not be required.

Solid Waste
Trash collection at the project site would be provided by Waste Management and would be hauled to the Antelope Valley Landfill or Lancaster Landfill. The Certified EIR determined that given the Antelope Valley Landfill’s maximum permitted throughput of 3,564 tons per day with a remaining capacity of 20,400,000 cubic yards as of April 2011, and the Lancaster Landfill’s maximum permitted throughput of 5,100 tons per day with a remaining capacity of 14,514,648 cubic yards, either of these

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landfills could accommodate all construction debris that would be generated by the approved project, resulting in a less than significant impact to landfill capacity.

The Certified EIR determined that the long-term occupancy of the 753 detached single-family homes would generate approximately 9,209 pounds of waste per day (equivalent to approximately 4.6 tons of waste per day), which represents a nominal fraction (approximately 0.14 percent) of the Antelope Valley Landfill’s daily maximum permitted throughput and would be approximately 0.09 percent of the Lancaster Landfill’s daily maximum permitted throughput. It was therefore determined that the amount of solid waste generated by the approved project would not cause either the Antelope Valley Landfill nor the Lancaster Landfill to exceed their respective maximum permitted daily use volumes and impacts would be less than significant.

In accordance with the California Solid Waste Reuse and Recycling Act of 1991 (Cal Pub Res. Code §42911), the approved project would be required to provide adequate areas for collecting and loading recyclable materials where solid waste is collected. The Certified EIR determined that with implementation of these mandatory requirements, which reduce the amount of solid waste generated by the approved project and diverted to landfills, and compliance with all applicable solid waste statutes and regulations, impacts related to solid waste statutes and regulations would be less than significant.

Approved Project Mitigation Measures
No mitigation measures were required for the approved project regarding utilities and service systems.

Proposed Project Impact Analysis
Wastewater Treatment
A Sewer Study was prepared for the proposed project to demonstrate that adequate sewer conveyance capacity exists to service the proposed project (Appendix G). Wastewater from the proposed project would be collected by an on-site sewer infrastructure system and conveyed off-site to the Lancaster Wastewater Reclamation Plant. Based on the City of Lancaster General Plan EIR’s single-family wastewater generation rate of 260 gallons per day per dwelling unit, the proposed project would generate an additional 31,200 gallons of wastewater per day (120 du x 260 gpd = 31,200 gpd). The LWRP’s current daily capacity is 18 million gallons of wastewater per day; therefore, the proposed project wastewater generation rate would be a fraction of the LWRP’s current daily capacity (LACSD, n.d.). Impacts to wastewater treatment facilities would not be substantially more severe as a result of the proposed project than as a result of the approved project. As with the approved project, implementation of the proposed project would require payment of a Sewage Treatment Improvements Fee as required by Section 15.64.080, Sewage Treatment Improvements Fee, of the City of Lancaster Municipal Code. There are no new potentially significant impacts associated with the proposed project;

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therefore, the proposed project would result in less than significant impacts to wastewater treatment facilities.

Water Facilities
Water services for the proposed project would be provided by LACWD District 40. Water Code §10912 requires the preparation of a water supply assessment report for a proposed residential development of more than 500 dwelling units; however, the proposed project would only add an additional 120 residential units. The approved project’s proposed acquisition of Nickel Water which would provide sufficient and reliable water supplies for both the approved project and the additional residential units of the proposed project. An updated Water Supply Assessment is included as Appendix H and as verified within, adequate water supply is available to serve the additional units. Impacts to water facilities would not be substantially more severe as a result of the proposed project than as a result of the approved project. There are no new potentially significant impacts associated with the proposed project; therefore, the proposed project would result in less than significant impacts to water facilities.

Stormwater Drainage Facilities
As with the approved project, implementation of the proposed project would include an engineered system of storm drain facilities designed to follow the natural direction of water flow across the project site. Impacts to stormwater drainage facilities would not be substantially more severe as a result of the proposed project than as a result of the approved project. There are no new potentially significant impacts associated with the proposed project; therefore, the proposed project would result in less than significant impacts to stormwater drainage facilities.

Solid Waste
Trash collection for the proposed project would be provided by Waste Management and would be hauled to the Antelope Valley Landfill or Lancaster Landfill. Based on the CalRecycle waste generation estimate of 12.23 pounds of waste per day, the proposed project would generate an additional 1,467.6 pounds of waste per day (120 du x 12.23 ppd = 1,467.6 ppd) (CalRecycle, 2006). Antelope Valley Landfill has a maximum permitted throughput of 5,548 tons per day with a remaining capacity of 17,911,225 cubic yards as of October 2017 (CalRecycle, 2022a), and the Lancaster Landfill has a maximum permitted throughput of 5,100 tons per day with a remaining capacity of 14,514,648 cubic yards as of August 2012 (CalRecycle, 2022b), either of these landfills could accommodate all construction debris that would be generated by the proposed project. Impacts to solid waste facilities would not be substantially more severe as a result of the proposed project than as a result of the approved project. There are no new potentially significant impacts associated with the proposed project; therefore, the proposed project would result in less than significant impacts to solid waste facilities.

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Proposed Project Mitigation Measures
No mitigation measures are required for the proposed project regarding utilities and service systems.

4.2 FINDINGS
The discussion in this Addendum evaluates the proposed project for significant impacts pursuant to CEQA. As a result, and for the reasons explained in this Addendum, the proposed project would not cause any new significant environmental impacts or substantially increase the severity of significant environmental impacts disclosed in the Certified EIR. There are no mitigation measures or alternatives previously found not to be feasible, that would in fact be feasible, and would substantially reduce one or more significant effects of the project. The project proponents decline to adopt the mitigation measure or alternative, or mitigation measures or alternatives which are considerably different from those analyzed in the previous EIR that would substantially reduce one or more significant effects on the environment. Thus, the proposed project does not trigger any of the conditions in CEQA Guidelines Section 15162 requiring the preparation of a subsequent EIR, and the appropriate environmental document as authorized by CEQA Guidelines Section 15164(b) is an addendum.

The following identifies the standards in Section 15162 of the CEQA Guidelines as they relate to the proposed project. When an EIR has been certified or a negative declaration adopted for a project, no subsequent EIR shall be prepared for that project unless the lead agency determines, on the basis of substantial evidence in light of the whole record, one or more of the following:

1. No substantial changes are proposed in the project which will require major revisions of the previous EIR or negative declaration due to the involvement of new significant environmental effects or a substantial increase in the severity of previously identified significant effects
As discussed previously, the proposed project would have similar environmental impacts to those discussed in the Certified EIR for the approved project. The proposed project would increase the number of residential units in the project site; however, the proposed project would be located within the same footprint of the approved project and thus would not be anticipated to result in any additional or substantially increased impacts, as shown in Section 4.1, Environmental Analysis.

Therefore, the proposed project would be anticipated to make efficient use of land when compared to the physical environmental impacts that were evaluated in the Certified EIR.

The proposed project would continue to comply with all applicable Federal, State, and local laws, and the proposed project would be consistent with the City’s General Plan. Therefore, no substantial changes are proposed that will require major revisions of the previous EIR due to the involvement of new significant environmental effects or a substantial increase in the severity of previously identified significant effects.

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2. The project will have one or more significant effects not discussed in the previous EIR.

There have been no changes in the project site or the surrounding area with regard to circumstances in which the approved project was undertaken. As described previously, the impacts of the proposed project would be less than or equal to those analyzed in the Certified EIR. Significant noise and traffic impacts would remain similar to what is identified in the Certified EIR with the implementation of the proposed project, although the approved project’s significant and unavoidable near-term transportation noise impact would be reduced to less than significant under the proposed project due to changed circumstances (change in noise levels over time since the EIR was certified). Therefore, no major revisions to the Certified EIR would be required due to the involvement of new significant environmental effects or a substantial increase in the severity of previously identified significant effects.

3. Significant effects previously examined will be substantially more severe than shown in the previous EIR.

The proposed project would have the same significant impacts as disclosed in the Certified EIR, although the approved project’s significant and unavoidable near-term transportation noise impact would be reduced to less than significant under the proposed project due to changed circumstances (change in noise levels over time since the EIR was certified). The Certified EIR identified significant impacts for noise and traffic. Implementation of the proposed project would not result in new significant environmental impacts. Although the number of residential dwelling units for the proposed project would increase by 120 units, the environmental impacts under the proposed project would not be substantially more severe than those analyzed in the Certified EIR. Therefore, no impacts of the proposed project would be substantially more severe than those analyzed in the Certified EIR.

4. Mitigation measures or alternatives previously found not to be feasible would in fact be feasible, and would substantially reduce one or more significant effects of the project, but the project proponents decline to adopt the mitigation measure or alternative.

As shown in Section 4.1, Environmental Analysis, the proposed project would not have any new substantial impacts when compared to the approved project, and would not require the implementation of any mitigation measures found not to be feasible. The previous mitigation measures discussed in the Certified EIR would continue to be applicable to the proposed project to reduce potential environmental impacts to less-than-significant. Therefore, the proposed project would not result in new significant environmental impacts; thus, there is no need for mitigation measures found by the Certified EIR not to be feasible.

5. Mitigation measures or alternatives which are considerably different from those analyzed in the previous EIR would substantially reduce one or more significant effects on the

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environment, but the project proponents decline to adopt the mitigation measure or alternative.

The proposed project would have environmental impacts that would not be substantially more severe than those of the approved project. As stated previously, no additional impacts or substantially more severe impacts would occur as a result of the proposed project. No new mitigation measures or alternatives which are considerably different from those analyzed in the Certified EIR would be required for the proposed project. The previous mitigation measures discussed in the Certified EIR would continue to be applicable to the proposed project to reduce potential environmental impacts to less than significant. Therefore, there are no new mitigation measures or alternatives required for the proposed project, and potential impacts would not be substantially more severe that those of the approved project.

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5. References
CalRecycle, 2006. Estimated Solid Waste Generation Rates. https://www2.calrecycle.ca.gov/wastecharacterization/general/rates ———. 2022a. SWIS Facility/Site Activity Details, Antelope Valley Public Landfill (19-AA-5624). https://www2.calrecycle.ca.gov/SolidWaste/SiteActivity/Details/3458?siteID=1364 ———. 2022b. SWIS Facility/Site Activity Details, Lancaster Landfill and Recycling Center (19-AA0050). https://www2.calrecycle.ca.gov/SolidWaste/SiteActivity/Details/3571?siteID=1035 City of Lancaster. 2008. General Plan EIR. https://www.cityoflancasterca.org/our-city/departmentsservices/development-services/planning/general-plan-2030 ———.2009. General Plan 2030.
https://www.cityoflancasterca.org/home/showpublisheddocument/9323/63577579221023000 0 ———. 2023. Municipal Code.
https://library.municode.com/ca/lancaster/codes/code_of_ordinances?nodeId=LANCASTER MUCO
Department of Finance. 2020. Table 2: E-5 City/County Population and Housing Estimates. https://view.officeapps.live.com/op/view.aspx?src=https%3A%2F%2Fdof.ca.gov%2Fwpcontent%2Fuploads%2FForecasting%2FDemographics%2FDocuments%2FE5_2022_InternetVersion.xlsx&wdOrigin=BROWSELINK Los Angeles County Sanitation District (LACSD). n.d. Lancaster Water Reclamation Plant. https://www.lacsd.org/services/wastewater-sewage/facilities/lancaster-water-reclamationplant MDS Consulting. 2022. Preliminary Onsite & Offsite Drainage Report for Tentative Tract No. 73507 Avanti North.

Urban Crossroads, 2022a. Avanti North Specific Plan Focused Traffic Assessment. August 16, 2022. ———.2022b. Avanti North Specific Plan Focused Air Quality and Greenhouse Gas Assessment.

August 18, 2022.
———.2022c. Avanti North Specific Plan Noise Assessment. August 16, 2022.

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Appendix A – Certified EIR MMRP

AVANTI NORTH

ENVIRONMENTAL IMPACT REPORT MMRP
Lead Agency: City of Lancaster SCH No. 2015111056

Certified EIR Summary of Environmental Impacts and Mitigation Measures

MITIGATION MEASURES (MM) RESPONSIBLE
PARTY

MONITORING
PARTY

IMPLEMENTATION
STAGE

COMPLIANCE
NOTES
MM 4.3-1
Prior to issuance of building permits, the City of Lancaster Chief Building Official and/or their designated official shall verify that the following note is specified on all building plans. The requirement shall be specified in bid documents issued to prospective construction contractors and contractors shall be required to comply with the note and maintain written records of such compliance that can be inspected upon request.
a) Only “Zero-Volatile Organic Compounds” paints (no more than 100 gram/liter of VOC) and/or High Pressure Low volume (HPLV) applications consistent with Antelope Valley Air Quality Management District (AVAQMD) Rule 1113 shall be used during Project construction.

City of Lancaster Chief
Building Official and/or
their designated official
Construction Contractor Prior to the issuance of
building permits
MM 4.4-1
Prior to the issuance of a grading permit, the Development Services Director or his/her designee shall ensure that the Grading Plan includes a condition of approval requiring a qualified biologist to conduct a pre-construction presence/absence survey for burrowing owl within 14 days prior to site disturbance, with a second visit occurring within 24 hours of ground disturbance. If burrowing owls are not detected, grading may proceed without limitation. If burrowing owls are detected on the site, the owls shall be passively excluded from the site following professionally-accepted protocols, such as collapsing burrows and the use of one-way doors. If proximate habitat is not available in the opinion of a qualified biologist for successful passive relocation of the species, active relocation shall occur in coordination with the City of Lancaster outside of the nesting season to avoid the potential incidental take of active nests, unless the biologist demonstrates to the City of Lancaster that the proposed exclusion of owls would not result in the take of an active nest.

City of Lancaster
Development Services
Director or his/her
designee
Qualified Biologist Prior to the issuance of a
grading permit
MM 4.4-2
Prior to the issuance of a grading permit, the Development Services Director or his/her designee shall ensure that the Grading Plan includes a condition of approval requiring all vegetation removal associated with the Project to occur outside of the migratory bird nesting season (February 1 to August 31). If avoidance of the nesting season is not feasible, then a qualified biologist shall conduct nesting bird surveys of the property no more than three days prior to the removal of any vegetation or structures with the potential to support nesting birds. If vegetation is not removed within three days of a nesting bird survey, then the surveys shall be repeated. If active nests are identified, then the biologist shall establish an adequate buffer depending on the species and the location of the nest (up to 200 feet for non-raptors and 500 feet for raptors), which shall be avoided until the nests are no longer active as determined by the biologist.

City of Lancaster
Development Services
Director or his/her
designee
Qualified Biologist Prior to the issuance of a
grading permit

AVANTI NORTH

ENVIRONMENTAL IMPACT REPORT MMRP
Lead Agency: City of Lancaster SCH No. 2015111056

MITIGATION MEASURES (MM) RESPONSIBLE
PARTY

MONITORING
PARTY

IMPLEMENTATION
STAGE

COMPLIANCE
NOTES
MM 4.11-1
Prior to issuance of any grading and building permits, the City of Lancaster shall review grading and building plans to ensure the following notes are included on the plans. Project contractors shall be required to comply with these notes and maintain written records of such compliance that can be inspected by the City of Lancaster upon request.
a) All construction activities and haul truck deliveries shall adhere to Chapter 8.24.040 of the City of Lancaster Municipal Code, which prohibits construction activities that make loud noise from occurring 8:00 p.m. and 7:00 a.m. and on Sundays within five hundred (500) feet of an occupied dwelling, apartment, hotel, mobile home or other place of residence. b) All construction equipment, fixed or mobile, shall be equipped with properly operating and maintained mufflers, consistent with manufacturer’s standards. The construction contractors shall place all stationary equipment so that emitted noise is directed away from the noise sensitive receivers nearest the Project site.
c) Construction equipment staging areas shall be located such that a minimum distance of 100 feet is maintained between construction-related noise sources and noise-sensitive receivers. d) The construction contractor shall design a haul route exhibit that includes delivery routes that minimize the exposure of sensitive land uses or residential dwellings to delivery truck-related noise.

City of Lancaster Chief
BuildingOfficial and/or
their designated official
Construction Contractor Prior to issuance of any
grading and building
permits
MM 4.11-2
Minimum 6-foot high noise barriers for outdoor living areas (rear yards) shall be constructed for residential lots located adjacent to Avenue K, 70th Street West, 65th Street West, and Avenue K. The noise barriers shall be constructed so that the top of each wall extends to the recommended height above the pad elevation of the lot it is shielding. When the road is elevated above the pad elevation, the barrier shall extend to the recommended height above the highest point between the residential home and the road. The barriers shall provide a weight of at least 4 pounds per square foot of face area with no decorative cutouts or line-of-sight openings between shielded area and the roadways. The barriers shall present a solid face from top to bottom. Unnecessary openings or decorative cutouts shall not be made and all gaps (except for weep holes) shall be filled with grout or caulking. The noise barriers shall be constructed of a) masonry block; b) stucco veneer over wood framing (or foam core) or 1-inch thick tongue and groove wood of sufficient weight per square foot; c) glass (1/4-inch thick), or other transparent material with sufficient weight per square foot; d) earthen berm; or e) any combination of these construction materials.

City of Lancaster Chief
BuildingOfficial and/or
their designated official
Construction Contractor Prior to the issuance of
certificates of occupancy.

AVANTI NORTH

ENVIRONMENTAL IMPACT REPORT MMRP
Lead Agency: City of Lancaster SCH No. 2015111056

MITIGATION MEASURES (MM) RESPONSIBLE
PARTY

MONITORING
PARTY

IMPLEMENTATION
STAGE

COMPLIANCE
NOTES
MM 4.11-3
Homes located on the following lots shall be required to implement the conditions specified below. • lots 14 to 33, 407 to 424, and 485 to 501 adjacent to Avenue K; • lots 34, 35, 49, 50, 65, 66, 81, 82, 171 to 191 adjacent to 70th Street West; • lots 471 to 484, 682 to 693 adjacent to 65thStreet West; • lots 192, 206 to 216, 298 to 304, 640, 641, 652, 653, 664, 665, 671 to 681 adjacent to Avenue K-8.
a) Windows: All windows and sliding glass doors shall be well fitted, well weather-stripped assemblies and shall have a minimum sound transmission class (STC) rating of 27. b) Doors: All exterior doors shall be well weather-stripped solid core assemblies at least one and three-fourths-inch thick.
c) Roof: Roof sheathing of wood construction shall be well fitted or caulked plywood of at least one-half inch thick. Ceilings shall be well fitted, well-sealed gypsum board of at least one-half inch thick.
d) Attic: Attic vents should be oriented away from Avenue K, 70th Street West, 65th Street West, and Avenue K-8. If such an orientation cannot be avoided, then an acoustical baffle shall be placed in the attic space behind the vents. Insulation with at least a rating of R-19 shall be used in the attic space.
e) Ventilation: A means of mechanical ventilation is required. When any habitable room is in use, arrangements shall be such that circulated air is received when any exterior door(s) or window(s) are closed. A forced air circulation system (e.g. air conditioning) or active ventilation system (e.g. fresh air supply) shall be provided which satisfies the requirements of the Uniform Mechanical Code.

City of Lancaster Chief
BuildingOfficial and/or
their designated official
Construction Contractor Prior to the issuance of
certificates of occupancy.

MM 4.15-1
Prior to the issuance of grading permits, the Project Applicant shall prepare and the City of Lancaster shall approve a temporary traffic control plan. The temporary traffic control plan shall comply with the applicable requirements of the California Manual on Uniform Traffic Control Devices. A requirement to comply with the temporary traffic control plan shall be noted on all grading and building plans and also shall be specified in bid documents issued to prospective construction contractors.

Project Applicant City of Lancaster Prior to the issuance of grading permits
MM 4.15-2
Prior to the issuance of the first certificate of occupancy for the Project, the City of Lancaster Engineering Department shall verify that a striped median for 2-stage gap clearance has been added at the 55th Street West / West Avenue L intersection. If this improvement has not been installed, the Project Applicant shall make the improvements. The improvement may be eligible for fee credits or reimbursements through City Ordinance No. 339 and Resolution No. 02-171 which establishes impact fees relating to the installation and upgrade of traffic signals (to be determined at the City’s discretion).

Project Applicant City of Lancaster
Engineering Department
Prior to issuance of the first
certificate of occupancy for
the Project

AVANTI NORTH

ENVIRONMENTAL IMPACT REPORT MMRP
Lead Agency: City of Lancaster SCH No. 2015111056

MITIGATION MEASURES (MM) RESPONSIBLE
PARTY

MONITORING
PARTY

IMPLEMENTATION
STAGE

COMPLIANCE
NOTES
MM 4.15-3
Prior to the issuance of the first certificate of occupancy for the Project, the City of Lancaster Engineering Department shall verify that a single lane roundabout has been added to the 50th Street West / West Avenue K intersection. If the intersection improvement has not been installed, the Project Applicant shall install the roundabout. The Project Applicant may be eligible for a fee credit or reimbursement through City Ordinance No. 507 and Resolution No. 89-193, which establishes traffic impact fees (to be determined at the City’s discretion).

City Engineer or his/her
assignee
City of Lancaster
Engineering Department
Prior to the issuance of the
first certificate of occupancy
for the Project
MM 4.15-4
The Project shall comply with the mandatory requirements of the City of Lancaster Ordinance No. 507 and Resolution No. 89-193, which establishes traffic impact fees. The purpose of the traffic impact fee is to collect funds to provide for street construction, including roadway purchase when necessary, utility relocation and installation, and other necessary items to complete the roadway construction through the City as determined by the Department of Public Works. Improvements constructed by Project may be eligible for a fee credit or reimbursement through the program (to be determined at the City’s discretion).

City Engineer or his/her
assignee
Project Applicant Prior to the issuance of
certificates of occupancy
MM 4.15-5
The Project shall comply with the mandatory requirements of the City of Lancaster Ordinance No. 339 and Resolution No. 02-171 which establishes impact fees relating to the installation and upgrade of traffic signals. The traffic signal fee is intended to provide new traffic signals and/or modify existing traffic signals throughout the City as determined by the Department of Building and Engineering Services. Signals installed by the Project may be eligible for a fee credit or reimbursement through the program (to be determined at the City’s discretion).

City Engineer or his/her
assignee
Project Applicant Prior issuance of certificates
of occupancy
MM 4.15-6
The Project shall comply with the mandatory requirements of the City of Lancaster Ordinance No. 850 and Resolution No. 06-163 and 08-99, which establishes traffic impact fees for Los Angeles County.

The Los Angeles County traffic impact fee is intended to mitigate the adversely impacted existing local street/road system adjacent to the City boundaries within the County of Los Angeles.

City Engineer or his/her
assignee
Project Applicant Prior issuance of certificates
of occupancy

AVANTI NORTH

ENVIRONMENTAL IMPACT REPORT MMRP
Lead Agency: City of Lancaster SCH No. 2015111056

MITIGATION MEASURES (MM) RESPONSIBLE
PARTY

MONITORING
PARTY

IMPLEMENTATION
STAGE

COMPLIANCE
NOTES
MM 4.15-7
In the event that any of the intersection improvements identified in the Project’s Traffic Impact Analysis Report prepared by Urban Crossroads dated September 26, 2016 are not covered by one of the fee programs identified in MM 4.15-4, MM 4.15-5, or MM 4.15-6, the Project Applicant shall make a fair-share fee payment to the City of Lancaster prior to issuance of a certificate of occupancy, based on the Project’s percentage of traffic that would utilize the intersection in 2020, as identified in Table 1-5 andTable 1-7 of the same report. Payments shall be based on nexus requirements contained in the Mitigation Fee Act (Govt. Code § 66000 et seq.) and 14 Cal. Code of Regs. § 15126.4(a)(4) and any other applicable provisions of law. Fair share funds shall only be collected by the City for those improvements that are not included in established fee programs identified in MM

4.15-4, MM 4.15-5, or MM 4.15-6. The City of Lancaster shall determine, at its discretion, which intersections/ facilities are covered by the fee programs identified in MM 4.15-4, MM 4.15-4, and MM 4.15-5.

Project Applicant City of Lancaster Prior issuance of certificates of occupancy.

AVANTI NORTH PROJECT EIR ADDENDUM

CITY OF LANCASTER
Appendix B – EIR Addendum MMRP

AVANTI NORTH

ENVIRONMENTAL IMPACT REPORT MMRP
Lead Agency: City of Lancaster SCH No. 2015111056

Certified EIR Summary of Environmental Impacts and Mitigation Measures

MITIGATION MEASURES (MM) RESPONSIBLE
PARTY

MONITORING
PARTY

IMPLEMENTATION
STAGE

COMPLIANCE
NOTES
MM 4.3-1
Prior to issuance of building permits, the City of Lancaster Chief Building Official and/or their designated official shall verify that the following note is specified on all building plans. The requirement shall be specified in bid documents issued to prospective construction contractors and contractors shall be required to comply with the note and maintain written records of such compliance that can be inspected upon request.
a) Only “Zero-Volatile Organic Compounds” paints (no more than 100 gram/liter of VOC) and/or High Pressure Low volume (HPLV) applications consistent with Antelope Valley Air Quality Management District (AVAQMD) Rule 1113 shall be used during Project construction.

City of Lancaster Chief
Building Official and/or
their designated official
Construction Contractor Prior to the issuance of
building permits
MM 4.4-1
Prior to the issuance of a grading permit, the Development Services Director or his/her designee shall ensure that the Grading Plan includes a condition of approval requiring a qualified biologist to conduct a pre-construction presence/absence survey for burrowing owl within 14 days prior to site disturbance, with a second visit occurring within 24 hours of ground disturbance. If burrowing owls are not detected, grading may proceed without limitation. If burrowing owls are detected on the site, the owls shall be passively excluded from the site following professionally-accepted protocols, such as collapsing burrows and the use of one-way doors. If proximate habitat is not available in the opinion of a qualified biologist for successful passive relocation of the species, active relocation shall occur in coordination with the City of Lancaster outside of the nesting season to avoid the potential incidental take of active nests, unless the biologist demonstrates to the City of Lancaster that the proposed exclusion of owls would not result in the take of an active nest.

City of Lancaster
Development Services
Director or his/her
designee
Qualified Biologist Prior to the issuance of a
grading permit
MM 4.4-2
Prior to the issuance of a grading permit, the Development Services Director or his/her designee shall ensure that the Grading Plan includes a condition of approval requiring all vegetation removal associated with the Project to occur outside of the migratory bird nesting season (February 1 to August 31). If avoidance of the nesting season is not feasible, then a qualified biologist shall conduct nesting bird surveys of the property no more than three days prior to the removal of any vegetation or structures with the potential to support nesting birds. If vegetation is not removed within three days of a nesting bird survey, then the surveys shall be repeated. If active nests are identified, then the biologist shall establish an adequate buffer depending on the species and the location of the nest (up to 200 feet for non-raptors and 500 feet for raptors), which shall be avoided until the nests are no longer active as determined by the biologist.

City of Lancaster
Development Services
Director or his/her
designee
Qualified Biologist Prior to the issuance of a
grading permit

AVANTI NORTH

ENVIRONMENTAL IMPACT REPORT MMRP
Lead Agency: City of Lancaster SCH No. 2015111056

MITIGATION MEASURES (MM) RESPONSIBLE
PARTY

MONITORING
PARTY

IMPLEMENTATION
STAGE

COMPLIANCE
NOTES
MM 4.11-1
Prior to issuance of any grading and building permits, the City of Lancaster shall review grading and building plans to ensure the following notes are included on the plans. Project contractors shall be required to comply with these notes and maintain written records of such compliance that can be inspected by the City of Lancaster upon request.
a) All construction activities and haul truck deliveries shall adhere to Chapter 8.24.040 of the City of Lancaster Municipal Code, which prohibits construction activities that make loud noise from occurring 8:00 p.m. and 7:00 a.m. and on Sundays within five hundred (500) feet of an occupied dwelling, apartment, hotel, mobile home or other place of residence.
b) All construction equipment, fixed or mobile, shall be equipped with properly operating and maintained mufflers, consistent with manufacturer’s standards. The construction contractors shall place all stationary equipment so that emitted noise is directed away from the noise sensitive receivers nearest the Project site. c) Construction equipment staging areas shall be located such that a minimum distance of 100 feet is maintained between construction-related noise sources and noise-sensitive receivers.
d) The construction contractor shall design a haul route exhibit that includes delivery routes that minimize the exposure of sensitive land uses or residential dwellings to delivery truck-related noise.

City of Lancaster Chief
Building Official and/or
their designated official
Construction Contractor Prior to issuance of any
grading and building
permits
MM 4.11-2
Minimum 6-foot high noise barriers for outdoor living areas (rear yards) shall be constructed for residential lots located adjacent to Avenue K, 70th Street West, 65th Street West, and Avenue K. The noise barriers shall be constructed so that the top of each wall extends to the recommended height above the pad elevation of the lot it is shielding. When the road is elevated above the pad elevation, the barrier shall extend to the recommended height above the highest point between the residential home and the road. The barriers shall provide a weight of at least 4 pounds per square foot of face area with no decorative cutouts or line-of-sight openings between shielded area and the roadways. The barriers shall present a solid face from top to bottom. Unnecessary openings or decorative cutouts shall not be made and all gaps (except for weep holes) shall be filled with grout or caulking. The noise barriers shall be constructed of a) masonry block; b) stucco veneer over wood framing (or foam core) or 1-inch thick tongue and groove wood of sufficient weight per square foot; c) glass (1/4-inch thick), or other transparent material with sufficient weight per square foot; d) earthen berm; or e) any combination of these construction materials.

City of Lancaster Chief
Building Official and/or
their designated official
Construction Contractor Prior to the issuance of
certificates of occupancy.

AVANTI NORTH

ENVIRONMENTAL IMPACT REPORT MMRP
Lead Agency: City of Lancaster SCH No. 2015111056

MITIGATION MEASURES (MM) RESPONSIBLE
PARTY

MONITORING
PARTY

IMPLEMENTATION
STAGE

COMPLIANCE
NOTES
MM 4.11-3
Homes located on the following lots shall be required to implement the conditions specified below. • lots 1 to 20, 469 to 486, and 487 to 508 adjacent to Avenue K; • lots 21 to 29 and 162 to 180 adjacent to 70th Street West; • lots 646 to 660 and 687 to 702 adjacent to 65th Street West; • lots 181 to 198, 350 to 355, 703 to 717, and 827 to 840 adjacent to Avenue K-8. a) Windows: All windows and sliding glass doors shall be well fitted, well weather-stripped assemblies and shall have a minimum sound transmission class (STC) rating of 27. b) Doors: All exterior doors shall be well weather-stripped solid core assemblies at least one and three-fourths-inch thick.
c) Roof: Roof sheathing of wood construction shall be well fitted or caulked plywood of at least one-half inch thick. Ceilings shall be well fitted, well-sealed gypsum board of at least one-half inch thick.
d) Attic: Attic vents should be oriented away from Avenue K, 70th Street West, 65th Street West, and Avenue K-8. If such an orientation cannot be avoided, then an acoustical baffle shall be placed in the attic space behind the vents. Insulation with at least a rating of R-19 shall be used in the attic space.
e) Ventilation: A means of mechanical ventilation is required. When any habitable room is in use, arrangements shall be such that circulated air is received when any exterior door(s) or window(s) are closed. A forced air circulation system (e.g. air conditioning) or active ventilation system (e.g. fresh air supply) shall be provided which satisfies the requirements of the Uniform Mechanical Code.

City of Lancaster Chief
Building Official and/or
their designated official
Construction Contractor Prior to the issuance of
certificates of occupancy.

MM 4.15-1
Prior to the issuance of grading permits, the Project Applicant shall prepare and the City of Lancaster shall approve a temporary traffic control plan. The temporary traffic control plan shall comply with the applicable requirements of the California Manual on Uniform Traffic Control Devices. A requirement to comply with the temporary traffic control plan shall be noted on all grading and building plans and also shall be specified in bid documents issued to prospective construction contractors.

Project Applicant City of Lancaster Prior to the issuance of grading permits
MM 4.15-2
Prior to the issuance of the first certificate of occupancy for the Project, the City of Lancaster Engineering Department shall verify that a striped median for 2-stage gap clearance has been added at the 55th Street West / West Avenue L intersection. If this improvement has not been installed, the Project Applicant shall make the improvements. The improvement may be eligible for fee credits or reimbursements through City Ordinance No. 339 and Resolution No. 02-171 which establishes impact fees relating to the installation and upgrade of traffic signals (to be determined at the City’s discretion).

Project Applicant City of Lancaster
Engineering Department
Prior to issuance of the first
certificate of occupancy for
the Project

AVANTI NORTH

ENVIRONMENTAL IMPACT REPORT MMRP
Lead Agency: City of Lancaster SCH No. 2015111056

MITIGATION MEASURES (MM) RESPONSIBLE
PARTY

MONITORING
PARTY

IMPLEMENTATION
STAGE

COMPLIANCE
NOTES
MM 4.15-3
Prior to the issuance of the first certificate of occupancy for the Project, the City of Lancaster Engineering Department shall verify that a single lane roundabout has been added to the 50th Street West / West Avenue K intersection. If the intersection improvement has not been installed, the Project Applicant shall install the roundabout. The Project Applicant may be eligible for a fee credit or reimbursement through City Ordinance No. 507 and Resolution No. 89-193, which establishes traffic impact fees (to be determined at the City’s discretion).

City Engineer or his/her
assignee
City of Lancaster
Engineering Department
Prior to the issuance of the
first certificate of occupancy
for the Project
MM 4.15-4
The Project shall comply with the mandatory requirements of the City of Lancaster Ordinance No. 507 and Resolution No. 89-193, which establishes traffic impact fees. The purpose of the traffic impact fee is to collect funds to provide for street construction, including roadway purchase when necessary, utility relocation and installation, and other necessary items to complete the roadway construction through the City as determined by the Department of Public Works. Improvements constructed by Project may be eligible for a fee credit or reimbursement through the program (to be determined at the City’s discretion).

City Engineer or his/her
assignee
Project Applicant Prior to the issuance of
certificates of occupancy
MM 4.15-5
The Project shall comply with the mandatory requirements of the City of Lancaster Ordinance No. 339 and Resolution No. 02-171 which establishes impact fees relating to the installation and upgrade of traffic signals. The traffic signal fee is intended to provide new traffic signals and/or modify existing traffic signals throughout the City as determined by the Department of Building and Engineering Services. Signals installed by the Project may be eligible for a fee credit or reimbursement through the program (to be determined at the City’s discretion).

City Engineer or his/her
assignee
Project Applicant Prior issuance of certificates
of occupancy
MM 4.15-6
The Project shall comply with the mandatory requirements of the City of Lancaster Ordinance No. 850 and Resolution No. 06-163 and 08-99, which establishes traffic impact fees for Los Angeles County.

The Los Angeles County traffic impact fee is intended to mitigate the adversely impacted existing local street/road system adjacent to the City boundaries within the County of Los Angeles.

City Engineer or his/her
assignee
Project Applicant Prior issuance of certificates
of occupancy

AVANTI NORTH

ENVIRONMENTAL IMPACT REPORT MMRP
Lead Agency: City of Lancaster SCH No. 2015111056

MITIGATION MEASURES (MM) RESPONSIBLE
PARTY

MONITORING
PARTY

IMPLEMENTATION
STAGE

COMPLIANCE
NOTES
MM 4.15-7
In the event that any of the intersection improvements identified in the Project’s Traffic Impact Analysis Report prepared by Urban Crossroads dated September 26, 2016 are not covered by one of the fee programs identified in MM 4.15-4, MM 4.15-5, or MM 4.15-6, the Project Applicant shall make a fairshare fee payment to the City of Lancaster prior to issuance of a certificate of occupancy, based on the Project’s percentage of traffic that would utilize the intersection in 2020, as identified in Table 1-5 and Table 1-7 of the same report. Payments shall be based on nexus requirements contained in the Mitigation Fee Act (Govt. Code § 66000 et seq.) and 14 Cal. Code of Regs. § 15126.4(a)(4) and any other applicable provisions of law. Fair share funds shall only be collected by the City for those improvements that are not included in established fee programs identified in MM 4.15-4, MM 4.15-5, or MM 4.15-6. The City of Lancaster shall determine, at its discretion, which intersections/ facilities are covered by the fee programs identified in MM 4.15-4, MM 4.15-4, and MM 4.15-5.

Project Applicant City of Lancaster Prior issuance of certificates of occupancy.

AVANTI NORTH PROJECT EIR ADDENDUM

CITY OF LANCASTER
Appendix C – Air Quality and Greenhouse
Gas Assessment
14033-04 AQ & GHG Memo
August 18, 2022
Mr. Mike White
City Ventures
3121 Michelson Drive, Suite 150
Irvine, CA 92612

AVANTI NORTH SPECIFIC PLAN FOCUSED AIR QUALITY AND GREENHOUSE GAS

ASSESSMENT
Mr. Mike White,
This letter has been prepared to document the findings for the focused air quality and greenhouse gas assessment for the proposed Avanti North Specific Plan (Project) located on the southeast corner of 70th Street West and W. Avenue K in the City of Lancaster. Specifically, this assessment has been prepared to determine if the development of the proposed Project will result in any new significant impacts compared to the Avanti North Residential TTM No. 73507 Air Quality Analysis and Avanti North Residential TTM No. 73507 Greenhouse Gas Analysis, dated July 27, 2015, prepared by Urban Crossroads, Inc., referred to hereafter as the “2015 Air Quality Study” and “2015 Greenhouse Gas Study”.

PROJECT OVERVIEW
The proposed Project includes the development of 878 single family detached residential dwelling units and 13.30 acres of park space, to be developed within a single phase, referred to hereafter as the “Currently Proposed Project”.

At the time the 2015 Air Quality Study and 2015 Greenhouse Gas Study were prepared, the Project was proposed to include up to 758 family detached residential dwelling units and 10.30 acres of park space, referred to hereafter as the “Prior Project”.

As such, the Currently Proposed Project would result in a net increase of 120 single family detached residential dwelling units and 3.0 acres of park space.

AIR QUALITY EMISSIONS
In order to determine potential AQ emissions associated with the Currently Proposed Project, emissions associated with the Prior Project obtained from the 2015 Air Quality Study were scaled based on the net increase in proposed dwelling units. Table 1 summarizes AQ emissions for the Currently Proposed Project versus the Prior Project. As shown, the net increase in emissions would not exceed any of the applicable thresholds.

Mr. Mike White
City Ventures
August 18, 2022

14033-04 AQ & GHG Memo
TABLE 1: REGIONAL OPERATIONAL EMISSIONS (CURRENTLY PROPOSED VS. PRIOR PROJECT) Land Use Emissions (lbs/day)
VOC NOX CO SOX PM10 PM2.5
Summer
Currently Proposed 135.06 64.96 449.25 0.82 52.29 15.24 Prior Project 117.00 56.27 389.18 0.71 47.90 13.20
Net Change (Current – Prior) 18.06 8.69 60.07 0.11 7.39 2.04 Threshold 137 137 548 137 82 82
Winter
Currently Proposed 132.52 68.25 404.77 0.77 57.37 17.30 Prior Project 114.80 59.12 350.65 0.67 49.70 14.99
Net Change (Current – Prior) 17.72 9.13 54.12 0.10 7.67 2.31 Threshold 137 137 548 137 82 82

GREENHOUSE GAS EMISSIONS
In order to determine potential GHG emissions associated with the Currently Proposed Project, emissions associated with the Prior Project obtained from the 2015 Greenhouse Gas Study were scaled based on the net increase in proposed dwelling units. Table 2 summarizes the GHG emissions for the Currently Proposed Project versus the Prior Project. Emissions are reported in Metric Tons, consistent with the 2015 Greenhouse Gas Study, as well as Short Tons for consistency with the air districts threshold. As shown, the net increase in emissions would not exceed the applicable threshold.

TABLE 2: GHG EMISSIONS (CURRENTLY PROPOSED VS. PRIOR PROJECT) Land Use Emissions in Metric Tons per Year
Total CO2E
Currently Proposed 13,709.68
Prior Project 11,835.92
Net Change (Current - Original) 1,873.76
Threshold 90,718
Land Use Emissions in Short Tons per Year
Total CO2E
Currently Proposed 15,112.34
Prior Project 13,046.87
Net Change (Current - Original) 2,065.47
Threshold 100,000
Mr. Mike White
City Ventures
August 18, 2022

14033-04 AQ & GHG Memo

CONCLUSION
The net increase in emissions and the Currently Proposed Project’s total emissions would not exceed applicable thresholds for air quality or greenhouse gases. As such, the Currently Proposed Project would not result in a significant air quality or greenhouse gas impact.

AVANTI NORTH PROJECT EIR ADDENDUM

CITY OF LANCASTER
Appendix D – Preliminary Onsite & Offsite
Drainage Report for TTM No. 73507

I:\80344\DRAINAGE\PRELIMINARY\Report\803-44 Prelim Hydro (TTM73507) Narrative .doc

PRELIMINARY

ONSITE & OFFSITE DRAINAGE REPORT
For
Tentative Tract No. 73507

AVANTI-NORTH
Located in Los Angeles County
City of Lancaster
Prepared Date: July 2022
Prepared For:

CV Communities, LLC
3121 Michelson Drive, Suite 150
Irvine CA, 92612
Phone: 949.258.7555
Prepared By:

MDS Consulting
17320 Redhill Avenue, Suite 350
Irvine, CA 92614
949.251.8821

I:\80344\DRAINAGE\PRELIMINARY\Report\803-44 Prelim Hydro (TTM73507) Narrative .doc

TABLE OF CONTENTS
I. PROJECT DISCUSSION ......................................................................................................................... 4 A. PURPOSE................................................................................................................................................................... 4 B. PROJECT BACKGROUND ........................................................................................................................................... 4 II. DRAINAGE CONCEPT .......................................................................................................................... 4 III. METHODOLOGY .................................................................................................................................. 7 A. HYDROLOGY ............................................................................................................................................................ 7 B. HYDRAULICS ............................................................................................................................................................ 7 IV. HYDROLOGIC ANALYSIS..................................................................................................................... 7 A. OFFSITE UNDEVELOPED AND DEVELOPED CONDITION HYDROLOGY ........................................................................ 8 B. ONSITE PRE-DEVELOPMENT HYDROLOGY ................................................................................................................ 8 C. ONSITE POST-DEVELOPMENT HYDROLOGY .............................................................................................................. 8 V. SUMMARY ........................................................................................................................................... 8

APPENDIX A
HYDROCALC 0.3.1- BETA CALCULATIONS FOR 50-YEAR STORM
1) OFFSITE PRE-DEVELOPED AND DEVELOPED CONDITION
2) ONSITE PRE-DEVELOPED CONDITION

APPENDIX B
HYDROCALC 0.3.1- BETA CALCULATIONS FOR 50-YEAR STORM

ONSITE DEVELOPED CONDITION

APPENDIX C
REFERENCES:

1. RAINFALL INTENSITY AND HYDROLOGIC SOILS TYPES: 1-H1.66 AND 1-H1.67

APPENDIX D

ONSITE/OFFSITE HYDROLOGY MAPS

APPENDIX E (REFERENCE PLANS)

1. 72” STORM DRAIN PLANS (DWG. NO. PMT 03-03954)

2. DOUBLE 84” STORM DRAIN PLANS (DWG. NO. PMT 04-00132)

3. EARTHEN TRAPEZOIDAL CHANNEL (DWG. NO. CST 4610)

4. KIMLEY HORN HYDROLOGY, HYDRAULICS, AND LID REPORT – AVANTI SOUTH

5. CCL HYDROLOGY STUDY FOR TRACT NO. 53229