Exhibit B - Lindenville Specific Plan Addendum — South San Francisco City Council, September 27, 2023

Addendum
Lindenville Specific Plan
September 2023
In ConsultaƟon with
Prepared by
Lindenville Specific Plan i Addendum
City of South San Francisco September 2023

TABLE OF CONTENTS
Section 1.0 Introduction and Purpose ................................................................................................1 Section 2.0 Project Information .........................................................................................................2

2.1 Background Information and Project Location ......................................................................2

2.2 Project Description .................................................................................................................7

2.3 Approvals Required..............................................................................................................36 Section 3.0 Environmental Checklist...............................................................................................37

3.1 Aesthetics..............................................................................................................................40

3.2 Agriculture and Forestry Resources .....................................................................................44

3.3 Air Quality............................................................................................................................46

3.4 Biological Resources............................................................................................................58

3.5 Cultural Resources................................................................................................................66

3.6 Energy...................................................................................................................................69

3.7 Geology, Soils, and Minerals................................................................................................73

3.8 Greenhouse Gas Emissions...................................................................................................77

3.9 Hazards and Hazardous Materials........................................................................................85

3.10 Hydrology and Water Quality ..............................................................................................91

3.11 Land Use and Planning.........................................................................................................96

3.12 Noise and Vibration..............................................................................................................98

3.13 Population and Housing......................................................................................................105

3.14 Public Services....................................................................................................................107

3.15 Recreation...........................................................................................................................111

3.16 Transportation.....................................................................................................................113

3.17 Tribal Cultural Resources...................................................................................................119

3.18 Utilities and Service Systems .............................................................................................121

3.19 Wildfire...............................................................................................................................125 Section 4.0 References...................................................................................................................127 Section 5.0 Lead Agency and Consultants.....................................................................................129

5.1 Lead Agency.......................................................................................................................129

5.2 Consultants .........................................................................................................................129 Section 6.0 Acronyms and Abbreviations......................................................................................130 Lindenville Specific Plan ii Addendum
City of South San Francisco September 2023

TABLE OF CONTENTS
Figures
Figure 2.1-1: Regional Map...................................................................................................................3 Figure 2.1-2: Vicinity Map ....................................................................................................................4 Figure 2.1-3: Aerial Map and Surrounding Land Uses..........................................................................5 Figure 2.1-4: Existing General Plan Land Use Designations within Lindenville..................................6 Figure 2.2-1: Existing and Proposed Lindenville Sub-Area Boundary .................................................8 Figure 2.2-2: Specific Plan Character Areas........................................................................................11 Figure 2.2-3: Proposed General Plan Land Use Designations within Specific Plan Area...................14 Figure 2.2-4: Proposed Land Use Zoning Districts within Specific Plan area ....................................17 Figure 2.2-5: Proposed Maximum Building Heights...........................................................................21 Figure 2.2-6: Proposed Roadway Network..........................................................................................23 Figure 2.2-7: Proposed Pedestrian Priority Streets..............................................................................24 Figure 2.2-8: Proposed Bicycle Priority Streets...................................................................................25 Figure 2.2-9: Proposed Transit Priority Streets ...................................................................................26 Figure 2.2-10: Proposed Parks and Open Space ..................................................................................27 Figure 2.2-11: Proposed Potable Water System Improvements..........................................................29 Figure 2.2-12: Planned and Proposed Sanitary Sewer System Improvements....................................32 Figure 2.2-13: Proposed Storm Drain and Flood Management Improvements...................................35 Figure 3.4-1: Ecologically Sensitive Habitats......................................................................................60 Tables
Table 2.1-1: 2040 General Plan Buildout in Lindenville.......................................................................2 Table 2.2-1: Summary of Existing, Existing + Recently Approved, Allowed, and Proposed Development by Land Uses...................................................................................................................9 Table 2.2-2: Summary of Existing, Existing + Recently Approved, Allowed, and Proposed Residential and Non-Residential Development .....................................................................................9 Table 2.2-3: Summary of Existing, Existing + Recently Approved, Allowed, and Proposed Residential and Non-Residential Population and Employment...........................................................10 Table 2.2-4: Existing and Proposed General Plan Land Use Designations within Lindenville ..........15 Table 2.2-6: Lindenville Planned Parks and Open Space by Type......................................................22 Table 2.2-7: Proposed Potable Water System Improvements..............................................................28 Table 2.2-8: Planned Sanitary Sewer System Improvements..............................................................30 Table 2.2-9: Proposed Sanitary Sewer System Improvements............................................................31 Lindenville Specific Plan iii Addendum
City of South San Francisco September 2023
Table 2.2-10: Planned Storm Drain System Improvements ................................................................33 Table 3.3-1: Specific Plan Consistency with the 2017 Clean Air Plan Control Measures..................51 Table 3.8-1: Project Consistency with Applicable Climate Action Plan Actions................................79 Appendices
Appendix A: Final Draft Lindenville Specific Plan
Appendix B: Greenhouse Gas Inventory and Forecast Memorandum Appendix C: Lindenville VMT, Vehicle LOS, and Traffic Sensitivity Memorandum Lindenville Specific Plan 1 Addendum
City of South San Francisco September 2023
SECTION 1.0 INTRODUCTION AND PURPOSE
This Initial Study Checklist/Addendum has been prepared by the City of South San Francisco as the Lead Agency, in conformance with the California Environmental Quality Act (CEQA), the CEQA Guidelines, and the regulations and policies of the City of South San Francisco.

This Addendum to the certified Program Environmental Impact Report for the General Plan Update, Zoning Code Amendments, and Climate Action Plan (State Clearinghouse [SCH]#: 2021020064) (thereafter referred as the 2040 General Plan EIR) addresses proposed refinements to the previously approved project. The purpose of this Addendum is to evaluate whether the proposed refinements to the development studied in the 2040 General Plan EIR for the Lindenville Specific Plan area, which are described in Section 2.2 Project Description, will require major revisions to the certified 2040 General Plan EIR due to new significant impacts or a substantial increase in the severity of significant impacts previously identified in the 2040 General Plan EIR.

Lindenville Specific Plan 2 Addendum
City of South San Francisco September 2023
SECTION 2.0 PROJECT INFORMATION

2.1 BACKGROUND INFORMATION AND PROJECT LOCATION
On October 12, 2022, the City of South San Francisco (City) adopted the Shape South San Francisco:
2040 General Plan (2040 General Plan) to provide a roadmap for the City to implement policies and actions that create a resilient community, improve the quality of life of its residents, and expand economic development opportunities. There are 11 sub-areas within the city, one of which is Lindenville. Lindenville is an approximately 400-acre area located in the southern portion of the city, bounded by U.S. Highway 101 (US 101) to the east, the City of San Bruno and Centennial Way Trail to the south, Fir Avenue and Magnolia Avenue to the west, and Railroad Avenue to the north. Colma Creek runs through the northern portion of Lindenville between North Canal Street and South Canal Street.

Lindenville is situated among multiple regional and local transportation facilities, including the Bay Area Rapid Transit (BART) San Bruno and South San Francisco stations, the Caltrain South San Francisco station, US 101, and the Centennial Way and Bay Trails. Lindenville is primarily made up of industrial space, representing 40 percent of the citywide industrial inventory and 15 percent of all industrial space in the San Mateo County.

A regional map and a vicinity map of Lindenville are shown on Figure 2.1-1 and Figure 2.1-2. An aerial photograph of Lindenville and the surrounding area is shown on Figure 2.1-3.

The 2040 General Plan identifies Lindenville as an opportunity area to introduce new residential uses that can help meet local and regional housing goals. It also strives to locate mixed use development and higher-density employment land uses near public transportation. To facilitate this opportunity in Lindenville, the 2040 General Plan identifies a range of policies and implementation actions related to housing, employment, connectivity, and open space with the following mission statement:

Lindenville is a vibrant and inclusive neighborhood that maintains a base of job opportunities, promotes the creative economy, and creates a new residential neighborhood where all people can thrive.

The 2040 General Plan projected buildout for Lindenville is summarized in Table 2.1-1 below. The General Plan land use designations within Lindenville are shown on Figure 2.1-4.

Table 2.1-1: 2040 General Plan Buildout in Lindenville
Retail
(square feet)
Services
Hotel
(square
feet/rooms)
Office/Research
& Development
(square feet)
Industrial
(square
feet)
Other*
(square
feet)
Residential
(dwelling
units)
A. 2040 General Plan Allowed Development
217,501 595,724 40,076/229 4,246,663 4,695,567 4,137 5,580 * This category represents the square footage of public uses.

San Bruno
Millbrae
South San
Francisco
San
Francisco
Bay
San Francisco
Daly
City
Hillsborough
San Bruno
Millbrae
South San
Francisco
San
Francisco
Bay
San Francisco
101
101
101
280
280
280
380
82 82
1 1
Project
Site
REGIONAL MAP FIGURE 2.1-1
Pacific Ocean
Monterey Bay
San José
Sunnyvale
San Mateo Fremont
Redwood City
Livermore
Oakland
San Francisco
Santa Cruz
Mountain View
Morgan Hill
Project Site
CuperƟno
01 .5 5 Miles
Lindenville Specific Plan
City of South San Francisco
3 Addendum
September 2023
South San Francisco
San Bruno
South San Francisco
San Bruno
HunƟngton Avenue
Sneath Lane
El Camino Real
Valleywood Drive
Junip ero Serra Boulevard
West borou gh Boulevard
Chestnut Av en
Ponderosa Road
San Bruno Avenue
Gateway Boulevard
Oyster Point Boulevard
Forbes Boulevard
East Grand Avenue
South Airport Boulevard
North Access Road
Harbor Way
Spruce Avenue
South Linden Avenue
Airport Boulevard
Grand Avenue
Orange Avenue
Alta Vista Drive
HunƟngton Avenue
Sneath Lane
El Camino Real
Valleywood Drive
Junip ero Serra Boulevard
West borou gh Boulevard
Chestnut Av en
Ponderosa Road
San Bruno Avenue
Gateway Boulevard
Oyster Point Boulevard
Forbes Boulevard
East Grand Avenue
South Airport Boulevard
North Access Road
Harbor Way
Spruce Avenue
South Linden Avenue
Airport Boulevard
Grand Avenue
Orange
Avenue
Alta Vista Drive
Colma Creek
San Bruno Creek
Colma Creek
San Bruno Creek
82 82
380
280
101
101
Base Map: ESRI, ArcGIS
0 .25 .5 .75 1 Mile
Project Site
City Limit
VICINITY MAP FIGURE 2.1-2
Lindenville Specific PlanCity of South San Francisco
4 Addendum
September 2023
South San Francisco South San Francisco
San Bruno
San Bruno
ResidenƟal
ResidenƟal
School
ResidenƟal
ResidenƟal
Commercial
Industrial
Industrial/
Commercial
Industrial/
Commercial
Industrial/
Commercial
San Francisco
InternaƟonal
Airport
Future
Commercial,
Office &
ResidenƟal
Commercial
Commercial
San Bruno
StaƟon
South
San Francisco
StaƟon
San Bruno
StaƟon
South
San Francisco
StaƟon Railroad Avenue
Baden Avenue
South Spruce Avenue
South Linden Avenue
East Grand Avenue
Utah Avenue
North Access Road
South Airport Boulevard
El Camino Real
Sneath Lane
Hazelwood Drive
Ponderosa Road
Country Club Drive
Rockwood Drive
Railroad Avenue
Baden Avenue
South Spruce Avenue
South Linden Avenue
East Grand Avenue
Utah Avenue
North Access Road
South Airport Boulevard
El Camino Real
Sneath Lane
Hazelwood Drive
Ponderosa Road
Country Club Drive
Rockwood Drive
San Bruno Creek
Colma Creek
San Bruno Creek
82 82
380
101
101
Photo Date: Apr. 2022
0 200 1,200 1,600 2,400 Feet
Project Boundary
Caltrain
BART
City Limit
Aerial Source: Google Earth Pro, Aug. 10, 2023.

AERIAL MAP AND SURROUNDING LAND USES FIGURE 2.1-3
Lindenville Specific PlanCity of South San Francisco
5 Addendum
September 2023
Source: City of South San Francisco, Lindenville Specific Plan, June 30, 2023.

Navigable Slough
San Bruno
Creek
Colma Creek
South
San Francisco
Station
San Bruno
Station
§¨¦380
¬«82
£¤101
City of
San Bruno
Grand Ave
Linden Ave
Airport Blvd
Maple Ave
Spruce
Ave
Myrtle Ave
Franc isco
Dr
Mayfair Ave
Mitchell Ave Produce Ave
S Spruce Ave
Railroad
Ave
El
Camino
Real
Utah Ave
Fir Ave
S Magnolia Ave
Dollar Ave
Commercial Ave
Victory Ave
S Airport Blvd
Gateway Blvd
Tanforan Ave
Beacon St
Starlite St
S Linden Ave
Huntington Ave
S
Maple
Ave
N Canal St
San Mateo Ave
Lowrie Ave
Shaw Rd
Southline
Lorem ipsum

To implement the vision of the 2040 General Plan for Lindenville, the City has prepared the Lindenville Specific Plan (Specific Plan), which contains specific directives, strategies, and standards aimed to develop Lindenville into a resilient and walkable mixed-use district. Key components of the Specific Plan are described below. A copy of the Specific Plan is included in Appendix A.

2.2 PROJECT DESCRIPTION
The proposed Specific Plan is a refinement to the 2040 General Plan by providing more detailed assignment of land uses, densities, development standards, parks and open space, mobility, infrastructure and public facilities, and implementation for Lindenville than what was provided in the 2040 General Plan. Through this refinement, the Specific Plan would also require a General Plan Amendment to change the General Plan sub-area boundaries and land use designations, and rezoning within the proposed Lindenville sub-area boundary to make both plans consistent with one another and work together to further City goals for Lindenville. The proposed Specific Plan would modify the Lindenville sub-area boundary, as shown on Figure 2.2-1, by incorporating the triangular area from the Downtown sub-area bounded by Produce Avenue to the west, US 101 to the east, Railroad Avenue to the north, and Colma Creek to the south, and the non-residential area from the Orange Park sub-area west of South Spruce Avenue generally bounded by Mayfair Avenue to the north, single-family residences to the west, and Centennial Way Trail to the south. The modification to include the triangular area from the Downtown sub-area is proposed because its intended character more closely aligns with the City’s vision for Lindenville. The modification to include the areas west of South Spruce Avenue is proposed because it would enable a more comprehensive planning of land use, mobility, and the public realm changes along South Spruce Avenue and provide thoughtful land use and building density and height transitions to the adjacent single-family neighborhoods.

Table 2.2-1 summarizes the existing development, existing plus recently approved development, allowed development under the 2040 General Plan, and projected buildout of the Specific Plan, which would replace the allowed development under the 2040 General Plan, and Table 2.2-2 breaks the development down by residential and non-residential uses. While the Specific Plan would result in a notable net increase in services uses and industrial uses compared to the 2040 General Plan buildout, it assumes fewer existing services uses and industrial uses would be redeveloped to other uses. Compared to the 2040 General Plan, the project would result in a net increase in 49,233 square feet of new office/research & development uses, 220 square feet of new retail use, and 1 new dwelling unit, however, these additional development are reallocated from east of US 101 and do not increase the General Plan buildout for the city as a whole.1 Table 2.2-3 summarizes the population and employment of the existing development, existing plus recently approved development, allowed development under the 2040 General Plan, and projected buildout of the Specific Plan. Compared to the 2040 General Plan, the Specific Plan would increase the population by 2 residents and employment by 252 employees in Lindenville. The environmental impacts of the proposed Specific Plan (including the proposed General Plan Amendments) are the subject of this Addendum to determine whether the proposed Specific Plan would result in new or substantially more severe impacts than the environmental impacts identified in the 2040 General Plan EIR for the buildout of the 2040 General Plan.
1 Yurkovich, Eric. Principal, Raimi + Associates. Personal Communication. August 21, 2023.

South San Francisco South San Francisco
San Bruno
San Bruno
San Bruno
StaƟon
South
San Francisco
StaƟon
San Bruno
StaƟon
South
San Francisco
StaƟon Railroad Avenue
Baden Avenue
South Linden Avenue
East Grand Avenue
North Access Road
South Airport Boulevard
El Camino Real
Sneath Lane
Hazelwood Drive
Ponderosa Road
Country Club Drive
Rockwood Drive
Railroad Avenue
Baden Avenue
South Linden Avenue
East Grand Avenue
South Spruce Avenue
North Access Road
South Airport Boulevard
El Camino Real
Sneath Lane
Hazelwood Drive
Ponderosa Road
Country Club Drive
Rockwood Drive
San Bruno Creek
Colma Creek
San Bruno Creek
82 82
380
101
101
South Spruce Avenue
Caltrain
Photo Date: Apr. 2022
0 200 1,200 1,600 2,400 Feet
Proposed Project Boundary
ExisƟng Project Boundary
BART
City Limit
Aerial Source: Google Earth Pro, Aug. 10, 2023.

EXISTING AND PROPOSED LINDENVILLE SUB-AREA BOUNDARY FIGURE 2.2-1 Lindenville Specific PlanCity of South San Francisco
8 Addendum
September 2023
Lindenville Specific Plan 9 Addendum
City of South San Francisco September 2023
Table 2.2-1: Summary of Existing, Existing + Recently Approved, Allowed, and Proposed Development by Land Uses
Retail
(square feet)
Services
Hotel
(square
feet/rooms)
Office/Research
& Development
(square feet)
Industrial
(square
feet)
Other*
(square
feet)
Residential
(dwelling
units)
A. Existing Development
63,000 660,600 17,500/100 210,375 5,490,900 0 0
B. Existing Development + Recently Approved but not yet Constructed Projects 79,400 660,600 17,500/100 2,922,175 5,490,900 0 1,330
C. 2040 General Plan Allowed Development
217,501 595,724 40,076/229 4,246,663 4,695,567 4,137 5,580 D. Proposed Lindenville Specific Plan Development
217,721 621,038 31,341/179 4,295,896 4,938,467 4,137 5,581 Change Between Existing and Proposed Lindenville Specific Plan (D-A) +154,721 -39,562 +13,841/+79 +4,085,521 -552,433 +4,137 +5,581 Change Between Existing + Recently Approved and Proposed Lindenville Specific Plan (D-B) +138,321 -39,562 +13,841/+79 +1,373,721 -552,433 +4,137 +4,251 Change between 2040 General Plan and Proposed Lindenville Specific Plan (D-C) +220 +25,314 -8,375/-50 +49,233 +242,900 0 +1
* This category represents the square footage of public uses.

Table 2.2-2: Summary of Existing, Existing + Recently Approved, Allowed, and Proposed Residential and Non-Residential Development
Residential (dwelling units) Non-Residential (square feet) A. Existing Development
0 6,442,375
B. Existing Development + Recently Approved but not yet Constructed Projects 1,330 9,170,575
C. 2040 General Plan Allowed Development
5,580 9,799,668
D. Proposed Lindenville Specific Plan Development
5,581 10,108,600
Change Between Existing and Proposed Lindenville Specific Plan (D-A) +5,581 +3,666,225
Change Between Existing + Recently Approved and Proposed Lindenville Specific Plan (D-B) +4,251 +938,025
Lindenville Specific Plan 10 Addendum
City of South San Francisco September 2023
Table 2.2-2: Summary of Existing, Existing + Recently Approved, Allowed, and Proposed Residential and Non-Residential Development
Residential (dwelling units) Non-Residential (square feet) Change between 2040 General Plan and Proposed Lindenville Specific Plan (D-C) +1 +308,932
Table 2.2-3: Summary of Existing, Existing + Recently Approved, Allowed, and Proposed Residential and Non-Residential Population and Employment Population (residents) Employment (employees)
A. Existing Development
0 9,592
B. Existing Development + Recently Approved but not yet Constructed Projects 2,806 20,809
C. 2040 General Plan Allowed Development
11,773 23,114
D. Proposed Lindenville Specific Plan Development
11,775 23,366
Change Between Existing and Proposed Lindenville Specific Plan (D-A) +11,775 +13,774
Change Between Existing + Recently Approved and Proposed Lindenville Specific Plan (D-B) +8,969 +2,557
Change between 2040 General Plan and Proposed Lindenville Specific Plan (D-C) +2 +252
Note: Population and employment estimates provided by Raimi + Associates.

2.2.1 Character Areas
The Specific Plan includes four distinct character areas, Mixed Use Neighborhood, South Spruce Avenue Corridor, Employment Area, and South Linden Avenue Arts and Makers District, as shown on Figure 2.2-2. Each character area contains its standards and policies to address land use, mobility, open space, and blue-green infrastructure,
2 and urban design.
2 In contrast to the human engineered “gray” infrastructure, such as underground pipes or roadside swales, the nature-based “blue-green” infrastructure refers to using natural and semi-natural features to manage stormwater runoff and flooding, such as rain gardens, and green streets.

Lindenville Area Boundary
City of South San Francisco
Southline Specific Plan
Highway
Caltrain
BART
Proposed Streets
Proposed Laneways/Alleys
South Linden Arts and Makers District
South Spruce Avenue Corridor
Mixed Use Neighborhood
Eployment Area

LEGEND CHARACTER AREAS
0 .1 .15 .2 .05 .25
Miles
SPECIFIC PLAN CHARACTER AREAS FIGURE 2.2-2
Lindenville Specific Plan
City of South San Francisco
11 Addendum
September 2023
Lindenville Specific Plan 12 Addendum
City of South San Francisco September 2023
The Mixed Use Neighborhood is located in the northernmost portion of the Specific Plan area and a mixture of housing, retail and services, open space, civic uses, and legacy industrial uses are allowed.

The South Spruce Avenue Corridor spans the western portion of the Specific Plan along South Spruce Avenue from Centennial Way Trail to Colma Creek and the mixed use housing types allowed in the Mixed Use Neighborhood character area are allowed here as well, with smaller-scale housing types buffering the adjacent residential uses in the Orange Park/Mayfair neighborhood, which is outside of the Specific Plan area.

The Employment Area is located along the eastern portion east of the Caltrain railroad and south of the Mixed Use Neighborhood and a mixture of warehousing, manufacturing, processing, and storage and distribution uses are allowed to continue Lindenville’s industrial heritage.

The South Linden Arts & Makers District is located in the middle of the Specific Plan area surrounded by the Mixed Use Neighborhood and the Employment Area character areas, and a variety of uses to promote arts and cultural identity, including live/work housing, studios, makers spaces, and restaurants/bars are allowed. The character areas are established to enable future changes in Lindenville while retaining an industrial core.

Lindenville Specific Plan 13 Addendum
City of South San Francisco September 2023

2.2.2 Development Standards and Guidelines
The Specific Plan includes development standards and guidelines for the following subjects:
• Land Use
• Site, Block, and Building Design
• Parks and Open Space
• Complete Streets, Parking, and Transportation Demand Management • Infrastructure and Public Facilities
The primary development standards and guidelines that result in changes to the environment are summarized below. Refer to Appendix A for a complete description of all the development standards and guidelines.

General Plan Land Use Designations
As described above, to achieve the Specific Plan's land use goals, the General Plan land use designations of select parcels within the Specific Plan area would need to be changed, as summarized in Table 2.2-4 and shown on Figure 2.2-3. Overall, the proposed Specific Plan would:
• Reduce development intensity along Colma Creek by reducing the maximum mixed use density allowed at South Linden Avenue and changing the allowed use east of the Caltrain railroad from high-density mixed-use to industrial use (see ID #s 3, 4, 5, 6, and 7). • Increase the maximum mixed use density allowed along South Spruce Avenue and removing industrial as an allowed use (see ID #s 16, 17, and 18). • Remove industrial as an allowed use and allow commercial use with a reduced density on the north side of Victory Avenue, and reduce maximum industrial density allowed and remove residential as an allowed use on the south side of Victory Avenue (see ID #s 11, 12, 13, and 14).
• Reduce the high density mixed use area and expand the office use area west of South Maple Avenue in the southwestern corner of the Specific Plan area (see ID #15). • Reduce the mixed use density at the northwestern corner of the Specific Plan area. • Increase the mixed use density on South Linden Avenue north of North Canal Street (see ID #2).
• Designated slivers of open space between South Maple Avenue and South Linden Avenue (see ID #s 8, 9, and 10)
Source: City of South San Francisco, Lindenville Specific Plan, June 30, 2023 (revised August 30, 2023).

MDMU TO HMDU

MDMU TO HMDU
ITZ to MDMU
MDMU
to
HDMU
HDMU
to
LDMU
HDMU
to
PR
ITZ
to
LDMU
ITZ
to
MIH
MIH
to
PR
MIH
to
MI
ITZ
to
PR
MI
to
MIH
BPO
to
MIH
HDMU to BPO
ITZ
to
MI
LDMU
to
MDMU
MI
to
MDMU
ITZ to HDMU
HDMU
to
LDMU
HDMU
to
PR
ITZ
to

LDMU ITZ
to
MIH
MIH
to
PR
MIH
to
MI
ITZ
to
PR
HDMU to MIH
MI
to
MIH
BPO
to
MIH
HDMU to BPO
ITZ
to
MI
LDMU
to
MDMU
MI
to
MDMU
ITZ to HDMU
1 2
3 4 6
7 8
9 10
11 12
13 14
15 19
16 17
18 5

LAND USES
Low Density ResidenƟal (LDR)
Medium Density ResidenƟal (MDR)
Medium High Density ResidenƟal (MHDR)
High Density ResidenƟal (HDR)
Downtown ResidenƟal Core (DRC)
Urban ResidenƟal (UR)
Low Density Mixed Use (LDMU)
Grand Avenue Core (GAC)
Medium Density Mixed Use (MDMU)
High Density Mixed Use (HDMU)
East of 101 Mixed Use (EMU)
Downtown Transit Core (DTC)
East of 101 Transit Core (ETC)
Business and Professional Office (BPO)
Business Technology Park High (BTPH)
Community Commercial (CC)
Mixed Industrial (MI)
Mixed Industrial High (MIH)
Public (P)
TransportaƟon (T)
School (S)
Planned Development (PD)
Parks and RecreaƟon (PR)
Open Space (OS)
0 .1 .15 .20 .05 .25
Miles
.05 .25
Miles
Lindenville Area Boundary
City of South San Francisco
Southline Specific Plan Area
Highway
Caltrain
BART
Changes in General Plan Land Use Map
LEGEND
# ID
PROPOSED GENERAL PLAN LAND USE DESIGNATIONS WITHIN SPECIFIC PLAN AREA FIGURE 2.2-3 Lindenville Specific Plan
City of South San Francisco
14 Addendum
September 2023
Lindenville Specific Plan 15 Addendum
City of South San Francisco September 2023
Table 2.2-4: Existing and Proposed General Plan Land Use Designations within Lindenville
Parcel
ID Existing Proposed
1 Medim Density Mixed Use
(Floor Area Ratio [FAR] 0.5-3.5 with 0.5
non-residential; 120 Dwelling Units per
Acre [du/ac])
Low Density Mixed Use
(FAR 1.5-2.25; 60 du/ac)
2 Medim Density Mixed Use
(FAR 0.5-3.5 with 0.5 non-residential;
120 du/ac)
High Density Mixed Use
(FAR 0.5-4.5 with 0.5 non-residential; 180
du/ac)
3 High Density Mixed Use
(FAR 0.5-4.5 with 0.5 non-residential;
180 du/ac)
Low Density Mixed Use
(FAR 1.5-2.25; 60 du/ac)
4 Industrial Transition Zone
(FAR 0.4-3.5; 120 du/ac)
Low Density Mixed Use
(FAR 1.5-2.25; 60 du/ac)
5 High Density Mixed Use
(FAR 0.5-4.5 with 0.5 non-residential;
180 du/ac)
Mixed Industrial High
(FAR 0.4-2.0)
6 Industrial Transition Zone
(FAR 0.4-3.5; 120 du/ac
Mixed Industrial High
(FAR 0.4-2.0)
7 Mixed Industrial
(FAR 0.4-1.0)
Mixed Industrial High
(FAR 0.4-2.0)
8 High Density Mixed Use
(FAR 0.5-4.5 with 0.5 non-residential;
180 du/ac)
Parks and Recreation
(density N/A)
9 Industrial Transition Zone
(FAR 0.4-3.5; 120 du/ac)
Parks and Recreation
(density N/A)
10 Mixed Industrial High
(FAR 0.4-2.0)
Parks and Recreation
(density N/A)
11 Industrial Transition Zone
(FAR 0.4-3.5; 120 du/ac)
High Density Mixed Use
(FAR 0.5-4.5 with 0.5 non-residential; 180
du/ac
12 Industrial Transition Zone
(FAR 0.4-3.5; 120 du/ac)
Medim Density Mixed Use
(FAR 0.5-3.5 with 0.5 non-residential; 120
du/ac)
13 Mixed Industrial High
(FAR 0.4-2.0)
Mixed Industrial
(FAR 0.4-1.0)
14 Industrial Transition Zone
(FAR 0.4-3.5; 120 du/ac)
Mixed Industrial
(FAR 0.4-1.0)
Lindenville Specific Plan 16 Addendum
City of South San Francisco September 2023
Table 2.2-4: Existing and Proposed General Plan Land Use Designations within Lindenville
Parcel
ID Existing Proposed
15 High Density Mixed Use
(FAR 0.5-4.5 with 0.5 non-residential;
180 du/ac)
Business and Professional Office
(FAR 1.0-2.5)
16 Medim Density Mixed Use
(FAR 0.5-3.5 with 0.5 non-residential;
120 du/ac)
High Density Mixed Use
(FAR 0.5-4.5 with 0.5 non-residential; 180
du/ac)
17 Low Density Mixed Use
(FAR 1.5-2.25; 60 du/ac)
Medim Density Mixed Use
(FAR 0.5-3.5 with 0.5 non-residential; 120
du/ac)
18 Mixed Industrial
(FAR 0.4-1.0)
Medim Density Mixed Use
(FAR 0.5-3.5 with 0.5 non-residential; 120
du/ac)
19 Business and Professional Office
(FAR 1.0-2.5)
Mixed Industrial High
(FAR 0.4-2.0)
Land Use Zoning Districts and Overlay Zones
Similar to the General Plan land use designations, the zoning of select parcels within the Specific Plan area would also be rezoned, as shown on Figure 2.2-4.

The Specific Plan includes 11 land use zoning districts within Lindenville to regulate allowed uses, residential density, intensity, and height: High Density Residential (RH-180), T3 Neighborhood (T3N), T3 Makers Lindenville (T3ML), T4 Lindenville (T4L), T5 Lindenville (T5L), Business and Professional Office (BPO), Business Technology Park-High (BTP-H), Mixed Industrial Medium (MIM), Mixed Industrial High (MIH), Public (PQP), Parks and Recreation (PR), and Open Space (OS).

The T3ML, T4L, and T5L zoning districts would be new zoning districts to be added to the Zoning Code.

The Specific Plan also includes four overlay zones to support arts and makers, transfer of development near Colma Creek, active ground floor uses, and high rise mass timber buildings:

Height Incentive Overlay (HIO), Colma Creek Greenbelt Overlay (CCGO) Arts and Makers Overlay (AMO), and Active Ground Floor Use Overlay (AUO).

These overlay zones would be new overlay zones to be added to the Zoning Code.

The description of each of the land use zoning districts and overlay zones is described below.

Minimum and maximum development numbers for each land use designation are summarized below in Table 2.2-5.

Lindenville Area Boundary
City of South San Francisco
LEGEND
Southline Specific Plan Area
Highway
Caltrain
BART
Proposed Streets
Proposed Laneways/Alleys

LAND USE ZONING DISTRICTS
ResidenƟal High
T3 Neighborhood
T3 Makers Lindenville
T4 Lindenville
T5 Lindenville
Public
Parks
Open Space
TransportaƟon
Mixed Industrial Medium
Mixed Industrial High
Business and Professional Office
Business Technology Park High
Height IncenƟve Overlay
Colma Creek Greenway Overlay
Arts & Makers Overlay
AcƟve Ground Floor Use Overlay
0 .1 .15 .20 .05 .25
Miles
.05 .25
Miles
PROPOSED LAND USE ZONING DISTRICTS WITHIN SPECIFIC PLAN AREA FIGURE 2.2-4 Lindenville Specific Plan
City of South San Francisco
17 Addendum
September 2023
Lindenville Specific Plan 18 Addendum
City of South San Francisco September 2023
Table 2.2-5: Lindenville Specific Plan Land Use Zoning Districts Density and Intensity District
Minimum
Residential
Density
(DU/AC)
Maximum
Residential
Density
(DU/AC)
Base NonResidential
Floor Area
Ratio
Maximum
Floor Area
Ratio with
Community
Benefits2
Total Floor Area
Ratio (Residential
and
Nonresidential)3
RH-180
80 or existing
density,
whichever is
greater
1801 NA NA NA
T3N 20 60

0.5 maximum
for nonresidential
uses
NA 0.5 min; 2.25 max
T3ML 20 60

0.5 minimum
for nonresidential,

1.0 maximum
for nonresidential
uses
NA 1.0 min; 2.5 max
T4L 80 120

0.5 maximum
for nonresidential
uses
NA 1.25 min; 3.5 max
T5L 80 1404

0.5 maximum
for nonresidential
uses
NA 1.5 min; 3.75 max
BPO NA NA 1 2.5 2.5
BTP-H NA NA 0.5

2.0 for Clean
Technology,
Office, and
R&D

2.0 MIM NA NA 0.4

1.0 for all
permitted uses
except Office
and R&D

1.0 MIH NA NA 0.4

2.0 for all
permitted uses
except Office
and R&D

2.0 PQP NA NA NA NA NA
Notes:

1. See Zoning Code Chapter 20.390 Bonus Residential Density for additional density based on the California State Density Bonus program.

2. See Zoning Code Chapter 20.395 Community Benefits Program.

Lindenville Specific Plan 19 Addendum
City of South San Francisco September 2023

3. Ground floor nonresidential uses may be exempt from the maximum FAR, see Chapter 20.040.009 Determining Floor Area Ratio. Ground floor nonresidential uses would count towards the minimum FAR.

4. Projects within the Height Incentive Overlay that comply with Height Incentive Overlay requirements are eligible for a maximum of 180 du/ac. See the Section 3.5 of Appendix A for more information.

Zoning Districts
High Density Residential (RH-180) - The RH-180 zoning district provides for a mix of high-density residential development with a variety of multifamily housing choices. It also supports residential care facilities, group residential homes, service-enriched housing, parks and recreation facilities, and civic and institutional uses.

T3 Neighborhood (T3N) - The T3N district is a low-intensity neighborhood mixed-use district.

Residential in character, it supports cultural institutions and neighborhood-serving commercial uses in a walkable context. Buildings reflect the scale of surrounding low-density neighborhoods and frontages are consistent with those of the surrounding neighborhood.

T3 Makers Lindenville (T3ML) - The T3ML zoning district is a low- and medium-intensity mixeduse district that supports arts and makers, residential, and industrial uses along the South Linden Avenue corridor. This district supports flex low-rise buildings with diverse frontages that engage private development with the public realm and require ground floor arts and makers uses.

T4 Lindenville (T4L) - The T4L form-based zoning district establishes a mixed-use urban area. The district supports medium- to high-intensity mixed-use development, with buildings that transition in scale to surrounding residential neighborhoods. Diverse frontages provide a relationship between private development and the public realm and a consistent frontage along the key rights-of-way.

Minimum residential densities apply.

T5 Lindenville (T5L) - The T5L zoning district supports a comfortable and walkable high-intensity urban core. As large sites transition into walkable blocks, the district supports vertical mixed use development with buildings facing the city’s corridors as well as internal street networks and publicly-accessible open spaces. Diverse frontages provide space for active ground-floor uses and shape the relationship between private development and the expanded public realm. Minimum residential densities apply.

Business and Professional Office (BPO) - The BPO district provides areas for development of administrative, financial, business, professional, medical, and public offices, and research and development uses at locations close to transit stations, as well as limited retail development.

Business Technology Park-High (BTP-H) - The BTP-H district provides area for campus-like environments for corporate headquarters, research and development facilities, and offices. Typical uses include incubator-research facilities, prototype manufacturing, testing, repairing, packaging, publishing, and printing as well as offices and research and development facilities. Warehousing, distribution, manufacturing, retail, personal services, grocery, and hotel uses are also allowed.

Mixed Industrial Medium (MIM) - The MIM district supports a wide range of manufacturing, processing, general service, warehousing, storage and distribution, and service commercial uses.

Lindenville Specific Plan 20 Addendum
City of South San Francisco September 2023
Mixed Industrial High (MIH) - The MIH district supports a wide range of manufacturing, processing, general service, warehousing, storage and distribution, and service commercial uses.

Public (PQP) - The PQP district is reserved for government-owned facilities, civic uses, and public utilities. It includes government offices, the library, and the sewer treatment plant.

Parks and Recreation (PR) - This district includes parks, recreation complexes, public golf courses, and greenways.

Open Space (OS) - This district includes reserved land for natural and active open space uses.

Overlay Zones
Height Incentive Overlay (HIO) – The Height Incentive Overlay allows for maximum building heights of up to ~150 feet, subject to consistency with the San Francisco International Airport (SFO) Comprehensive Airport Land Use Compatibility Plan (ALUCP) and FAA regulations, in exchange for affordable housing, open space dedication, and green buildings.

Colma Creek Greenbelt Overlay (CCGO) – The Colma Creek Greenbelt Overlay is intended to encourage transfer of development away from parcels fronting Colma Creek to implement the vision of the Colma Creek Greenbelt. The Overlay does not restrict new private development within the zone.

Arts and Makers Overlay (AMO) – The Arts and Makers Overlay is intended to promote arts and cultural uses along South Linden Avenue. It requires specific uses in exchange for development incentives for parking, loading, and uses.

Active Ground Floor Use Overlay (AUO) – The Active Ground Floor Use Overlay requires active ground floor uses—like restaurants, retail, and personal services—to spur pedestrian and economic activity.

Maximum Building Heights
The Specific Plan includes maximum building heights allowed for future developments in the Specific Plan area consistent with the SFO Comprehensive ALUCP and FAA regulations. The taller buildings would primarily be allowed in the T5L zoning district, with maximum building heights up to 85 feet above the ground surface. The tallest buildings would be allowed in the T5L zoning district with the Height Incentive Overlay, with a maximum building height up to ~150 feet or the ALUCP / FAA maximum height, whichever is less. The maximum building heights in other zoning districts of Lindenville would be up to 35 feet above the ground surface, 65 feet above the ground surface, or up to the ALUCP / FAA maximum height, based on district zoning and location. The maximum building heights allowed under the Specific Plan are shown on Figure 2.2-5.

Lindenville Area Boundary
LEGEND

MAXIMUM HEIGHT
City of South San Francisco
Southline Specific Plan
Highway
Caltrain
BART
Proposed Streets
Proposed Laneways/Alleys
0 Ō
35 Ō
65 Ō
85 Ō
Up to ALUCP Max Height
Height IncenƟve Overlay (HIO)
0 .1 .15 .2 .05 .25
Miles
PROPOSED MAXIMUM BUILDING HEIGHTS FIGURE 2.2-5
Lindenville Specific Plan
City of South San Francisco
21 Addendum
September 2023
Lindenville Specific Plan 22 Addendum
City of South San Francisco September 2023
Street Network
The proposed street network for Lindenville would consist of improvements to existing streets and street extensions, and new streets and alleys for vehicles, public transportation, bicyclists, and pedestrians in Lindenville. The proposed street network is shown on Figure 2.2-6. The Specific Plan identifies pedestrian priority streets, bicycle priority streets, and transit priority streets, as shown on Figure 2.2-7, Figure 2.2-8, and Figure 2.2-9. Additional details on the street designs and minimum right-of-way widths are provided in Appendix A.

Parks and Open Space
The Specific Plan includes a parks and open space framework and plans for the Colma Creek greenbelt, neighborhood parks, linear parks, mini parks and plazas, trails, and open space in the Specific Plan area. The sizes of these parks and open spaces are summarized in Table 2.2-6 and shown on Figure 2.2-10. In addition, the Specific Plan would integrate blue-green infrastructure into parks and open spaces within the Specific Plan area, such as regenerative landscapes, green streets, urban forest, and stormwater management practices to improve existing stormwater and flood management. A maximum of 43.7 acre of open space is proposed under the proposed Specific Plan.

Table 2.2-6: Lindenville Planned Parks and Open Space by Type Type of Open Space Required Open Space (acres)
Colma Creek Greenbelt 16.3
Existing Creek Right-of-Way 3.1
East of South Linden Avenue 6.6
Between South Linden Avenue and South Spruce Avenue 5.5 West of South Spruce Avenue 1.1
Neighborhood Park* 3.00
Lindenville Linear Park 7.50
South of Colma Creek (to Victory Avenue) 2.50
Industrial Core (Victory to Myrtle Avenue) 2.00
At Centennial Way Trail (Myrtle Avenue extension to
Trail)

3.00 Mini Parks and Plazas 12.4
Southline Commons 2.20
Other (East of Caltrain railroad) 3.5
Other (West of Caltrain railroad) 6.7
Centennial Way Trail 4.50
Total 43.7
* Neighborhood Park, per the 2040 General Plan, is defined as a 1-5 acre facility. For the purposes of the proposed Specific Plan, it is assumed to be a minimum of 3.0 acres north of Colma Creek, but additional space can be provided.

Source: City of South San Francisco, Lindenville Specific Plan, June 30, 2023 (revised August 30, 2023).

Proposed Streets/Proposed Trails
Bart
Proposed Laneways/Alleys
Regional Auto Access Routes
Local Auto CirculaƟon Routes
LEGEND
Caltrain
Highway
Southline Specific Plan
City of South San Francisco
Lindenville Area Boundary
0 .1 .15 .2 .05 .25
Miles
PROPOSED ROADWAY NETWORK FIGURE 2.2-6
Lindenville Specific Plan
City of South San Francisco
23 Addendum
September 2023
Source: City of South San Francisco, Lindenville Specific Plan, June 30, 2023 (revised August 30, 2023).

Proposed Laneways/Alleys
Proposed Streets/Proposed Trails
Pedestrian Priority Streets
Bart
LEGEND
Caltrain
Highway
Southline Specific Plan
City of South San Francisco
Lindenville Area Boundary
0 .1 .15 .2 .05 .25
Miles
PROPOSED PEDESTRIAN PRIORITY STREETS FIGURE 2.2-7
Lindenville Specific Plan
City of South San Francisco
24 Addendum
September 2023
Source: City of South San Francisco, Lindenville Specific Plan, June 30, 2023 (revised August 30, 2023).

Proposed Laneways/Alleys
Proposed Streets/Proposed Trails
Local Access Routes (Class II Bike Lanes)
Bart
LEGEND
Caltrain
Highway
Southline Specific Plan
City of South San Francisco
Lindenville Area Boundary
Backbone Routes (Class I Trails and Class IV Separated Bikeway) 0 .1 .15 .2 .05 .25 Miles
PROPOSED BICYCLE PRIORITY STREETS FIGURE 2.2-8
Lindenville Specific Plan
City of South San Francisco
25 Addendum
September 2023
Source: City of South San Francisco, Lindenville Specific Plan, June 30, 2023 (revised August 30, 2023).

Proposed Laneways/Alleys
Proposed Streets/Proposed Trails
Bus Stop/ShuƩle Stop
Bart
LEGEND
Caltrain
Highway
Southline Specific Plan
City of South San Francisco
Lindenville Area Boundary
Bus Route/ShuƩle Route 0 .1 .15 .2 .05 .25
Miles
PROPOSED TRANSIT PRIORITY STREETS FIGURE 2.2-9
Lindenville Specific Plan
City of South San Francisco
26 Addendum
September 2023
Source: City of South San Francisco, Lindenville Specific Plan, June 30, 2023 (revised August 24, 2023). 0 0.05 0.1 0.15 0.2 0.25
Miles

LAND USES
Colma Creek Greenbelt
Neighborhood Park
Lindenville Linear Park
Mini Parks/Plazas
Centennial Way Trail
Open Space at Navigable Slough
Open Space Beyond Borders
Trails/Greenways
PROPOSED PARKS AND OPEN SPACE FIGURE 2.2-10
Lindenville Specific Plan
City of South San Francisco
27 Addendum
September 2023
Lindenville Specific Plan 28 Addendum
City of South San Francisco September 2023
Infrastructure
Water Infrastructure
Implementation of the Specific Plan would require upgrades to the potable water system. The Specific Plan identifies potable water system improvements needed to accommodate its planned growth. These improvements are summarized in Table 2.2-7 below and shown on Figure 2.2-11.

Table 2.2-7: Proposed Potable Water System Improvements ID Street Location Existing Diameter
(inches)
Proposed Diameter
(inches)
1 North Canal Street 8 12
2 South Maple Avenue 6 12
3 South Linden Avenue 6 12
4 Dollar Avenue 6 12
Source: City of South San Francisco, Lindenville Specific Plan, June 30, 2023.

LEGEND
Lindenville Area Boundary
City of South San Francisco
Highway
Caltrain
BART
Rivers/Streams
ExisƟng Potable Water Mains
ExisƟng Fire Hydrants
Proposed Potable Water Mains*
Proposed New Potable Water
ConnecƟons
*PotenƟal proposed pipe sizes, pending
hydrological modeling & analysis
0 0.05 0.1 0.15 0.2 0.25
Miles
PROPOSED POTABLE WATER SYSTEM IMPROVEMENTS FIGURE 2.2-11 Lindenville Specific Plan
City of South San Francisco
29 Addendum
September 2023
Lindenville Specific Plan 30 Addendum
City of South San Francisco September 2023
Sanitary Sewer System
Implementation of the Specific Plan would require upgrades to the sanitary sewer system. The City’s Sewer Master Plan and City’s records identify planned sanitary sewer capital improvements within Specific Plan area. These improvements are summarized in Table 2.2-8 below.

Table 2.2-8: Planned Sanitary Sewer System Improvements ID Street Location Existing Diameter
(inches)
Proposed Diameter
(inches)
Sewer System Master Plan
LI-P1 Along Colma Creek, west of South
Canal Street 8 12
LI-P2 South Canal Street 12 15
LI-P3 Victory Avenue 15 18
LI-P4 Victory Avenue 15 18
LI-P5 South Linden Avenue 15 18
LO-P11 South Spruce Avenue 15 21
LO-P12
East of 245 South Spruce between
South Spruce Avenue and South Maple
Avenue
15 21
LO-P13 South Maple Avenue 18 21
LO-P14
East of 275 South Maple Avenue
Between South Maple Avenue and San
Mateo Avenue
18 24
City Records*
N/A Railroad Avenue 6 10
N/A Produce Avenue/Airport
Boulevard/South Airport Boulevard 6 10
N/A Across San Bruno Canal unknown 6
* These sanitary sewer improvements are planned in City records, but not included in the Sanitary Sewer Master Plan.

Source: City of South San Francisco. City-Wide Sewer System Master Plan. July 2022.

Lindenville Specific Plan 31 Addendum
City of South San Francisco September 2023
The Specific Plan also identifies additional sanitary sewer improvements needed to accommodate its planned growth. These improvements are summarized in Table 2.2-9 below. The planned and proposed sanitary sewer system improvements are shown on Figure 2.2-12.

Table 2.2-9: Proposed Sanitary Sewer System Improvements Zones Street Location Existing Diameter
(inches)
Proposed Diameter
(inches)
16431 Mayfair Avenue 6 8
16435 Along Colma Creek 8 12
19121 South of 1431 San Mateo Avenue 4,6 8
19123 South Linden Avenue 6 10
19125 Starlite, South Maple Avenue, Victory
Avenue, and Ryan Way 8,15,18 12,21,24
19126 San Mateo Avenue 6 10
19127 Park and Fly site crossing to Lowrie
Street
4 and 6 8
Source: City of South San Francisco, Lindenville Specific Plan, June 30, 2023.

LEGEND
Lindenville Area Boundary
City of South San Francisco
Highway
Caltrain
BART
Rivers/Streams
ExisƟng Sanitary Sewer
ExisƟng Sewer Pump StaƟons
Proposed Sanitary Sewer Lines
Proposed Sanitary Sewer Lines
from SSF City-wide SSMP
Proposed Sanitary Sewer Lines from City
Records, but not in SSF City-wide SSMP
0 0.05 0.1 0.15 0.2 0.25
Miles
PLANNED AND PROPOSED SANITARY SEWER SYSTEM IMPROVEMENTS FIGURE 2.2-12 Lindenville Specific Plan
City of South San Francisco
32 Addendum
September 2023
Lindenville Specific Plan 33 Addendum
City of South San Francisco September 2023
Stormwater and Flood Management
Implementation of the Specific Plan would require upgrades to the storm drain and flood management system. The City’s Storm Drain Master Plan identifies planned storm drain capital improvements within the Specific Plan area. These improvements are summarized in Table 2.2-10.

Table 2.2-10: Planned Storm Drain System Improvements
ID Street Location Existing Size
(inches)
Proposed Size
(inches)
SD_G4.5 Spruce Avenue 36 RCP 84 RCP
SD_G7.1 Spruce Avenue 15 RCP 24 RCP
SD_G8.1 Spruce Avenue 15 RCP 24 RCP
SD_G9.2 Spruce Avenue 36 RCP 60 RCP
SD_G9.3 Spruce Avenue 36 RCP 72 RCP
SD_G9.4 Canal Street 36 RCP 84 RCP
SD_G9.5 Canal Street 36 RCP 6 x 10 RCB*
SD_B42.1 Spruce Avenue 66 RCP 5 x 12 RCB*
SD_B42.2.1 Spruce Avenue 66 RCP 5 x 12 RCB*
SD_B42.2.2 Spruce Avenue 66 RCP 5 x 12 RCB*
SD_B42.3 Spruce Avenue 66 RCP 5 x 12 RCB*
SD_B42.4 Spruce Avenue 66 RCP 5 x 12 RCB*
SD_B43.1 Spruce Avenue 66 RCP 5 x 12 RCB*
SD_B43.1.2 Spruce Avenue 66 RCP 5 x 12 RCB*
SD_B43.2 Spruce Avenue 18 RCP 60 RCP
SD_B43.3 Spruce Avenue 66 RCP 7 x 12 RCB*
SD_B41.1 Spruce Avenue 18 RCP 60 RCP
SD_A13.1 San Mateo Avenue 15 RCP 36 RCP
SD_A15.1 San Mateo Avenue 24 RCP 48 RCP
SD_A15.1 San Mateo Avenue 42 RCP 66 RCP
SD_A12.1 Tanforan Avenue 15 RCP 48 RCP
SD_A12.2 Tanforan Avenue 42 RCP 66 RCP
SD_A12.3 Shaw Road 42 RCP 66 RCP
SD_A10.1 Shaw Road 42 RCP 66 RCP
SD_A10.2 Shaw Road 12 RCP 36 RCP
SD_A10.3 Shaw Road 30 RCP 54 RCP
SD_A10.4 Shaw Road 42 RCP 5 x 12 RCB
SD_A3.1 Shaw Road 24 RCP 48 RCP
SD_A17.1 Terminal Court 18 RCP 36 RCP
Lindenville Specific Plan 34 Addendum
City of South San Francisco September 2023
Table 2.2-10: Planned Storm Drain System Improvements
ID Street Location Existing Size
(inches)
Proposed Size
(inches)
SD_A17.2 Terminal Court 18 RCP 36 RCP
SD_A17.3 Terminal Court 18 RCP 42 RCP
SD_H12.1 Airport Boulevard 12 RCP 54 RCP
SD_H12.2 Airport Boulevard 12 RCP 60 RCP
RCP = Reinforced Concrete Pipe
RCB = Reinforced Concrete Box
* The identified RCB sizes are in addition to the existing storm drain systems.

Source: City of South San Francisco. Storm Drain Master Plan. February 2016.

In addition, the Specific Plan includes design standards for incorporating blue-green infrastructure in future developments, streets, and open spaces within the Specific Plan area. The Specific Plan also identifies the following storm drain system improvements, as shown on Figure 2.2-13, in addition to improvements already identified in the City’s Storm Drain Master Plan:
• Regrade the existing grass ditch west of US 101 between Terminal Court and the Navigable Slough to integrate bioretention cells and improve conveyance. • Install rain garden or shallow bioretention basin adjacent to North Canal Street between the railroad tracks and South Magnolia Avenue.

The Specific Plan identifies the following as floodable parks and streets to manage flooding:
• Colma Creek Greenbelt
• Neighborhood Park north of South Canal Street
• Victory Avenue
• Starlight Street
• Shaw Road
• South Canal Street
• Eastern extension of Mayfair Avenue
• East of 245 South Spruce between South Spruce Avenue and South Linden Avenue Source: City of South San Francisco, Lindenville Specific Plan, June 30, 2023 (revised August 30, 2023).

LEGEND
Lindenville Area Boundary
City of South San Francisco
Highway
Caltrain
Bart
Rivers/Streams
ExisƟng Storm Drains
ExisƟng Storm Pump StaƟons
ExisƟng Stormwater Ouƞalls
Proposed Storm Drain Lines
Proposed Open Spaces
Proposed Greenway Corridors
Proposed Stormwater Conveyance
Proposed UƟlity Corridors
Proposed Closed Water Loops
Proposed RetenƟon Streets
0 0.05 0.1 0.15 0.2 0.25
Miles
PROPOSED STORM DRAIN AND FLOOD MANAGEMENT IMPROVEMENTS FIGURE 2.2-13 Lindenville Specific Plan
City of South San Francisco
35 Addendum
September 2023
Lindenville Specific Plan 36 Addendum
City of South San Francisco September 2023
Other Infrastructure Improvements
The Specific Plan also identifies utility concepts of having closed water loop systems3in the industrial area, and utility corridors4along major thoroughfares such as South Spruce Avenue, South Maple Avenue, South Linden Avenue, and San Mateo Avenue.

Note: The infrastructure improvements identified in the Specific Plan are conceptual and have not been designed. Implementation of these infrastructure improvements would require design and undergo separate project-level environmental review once they are adequately designed to allow for analysis.

2.3 APPROVALS REQUIRED
The discretionary action for the project includes Specific Plan adoption by the City Council and related General Plan amendments, Zoning Code amendments, and rezoning. Following adoption, subsequent submittal, and review of specific development projects (including street, open space, infrastructure improvements) within the Specific Plan area by property owners/developers would then be required, and subject to project-level environmental review. 3 A sealed heating and cooling system used for industrial or commercial environments that recirculates a fixed volume of water, and therefore, reduces water use and contamination to water quality. 4 A district-scale energy system shared by multiple buildings to reduce energy costs and improve energy efficiency.

Lindenville Specific Plan 37 Addendum
City of South San Francisco September 2023
SECTION 3.0 ENVIRONMENTAL CHECKLIST
The purpose of the checklist is to evaluate the categories in terms of any “changes” or “new information” that may result in a changed environmental impact evaluation. A “no” answer does not necessarily mean that there are no potential impacts relative to the environmental category, but that there is no relevant change in the condition or status of the impact due to its insignificance or its treatment in a previous environmental document.

Overriding considerations were adopted in connection with adoption of the 2040 General Plan, following the certification of the 2040 General Plan EIR, that accepted the possibility of certain impacts regardless of whether mitigations could reduce them to a less-than-significant level. Thus, certain environmental categories might be answered with a “no” in the checklist because the proposed project does not introduce changes that would result in a modification to the conclusion of the EIR Findings Document.

EXPLANATION OF CHECKLIST EVALUATION CATEGORIES:

A. Where an Impact Was Analyzed in Prior Environmental Documents This column provides a reference to the pages of the other environmental documents where information and analysis may be found relative to the environmental issue listed under each topic.

B. Do Proposed Changes Involve New or More Severe Impacts? Pursuant to Section 15162(a)(1) of the CEQA Guidelines, this column indicates whether the changes represented by the proposed project will result in new significant impacts not disclosed in the prior EIR or substantial increases in the severity of a previously identified significant impact. A yes answer is required if there are new or worsened significant impacts that require “major revisions of the previous EIR or negative declaration.” If a “yes” answer is given, additional mitigation measures or alternatives may be needed.

C. Any New Circumstances Involving New or More Severe Impacts? Pursuant to Section 15162(a)(2) of the CEQA Guidelines, this column indicates whether changed circumstances affecting the proposed project will result in new significant impacts not disclosed in the prior EIR or substantial increases of the severity of a previously identified significant impact. A yes answer is required if there are new or worsened significant impacts that require “major revisions of the previous EIR or negative declaration.” If a “yes” answer is given, additional mitigation measures or alternatives may be needed.

Lindenville Specific Plan 38 Addendum
City of South San Francisco September 2023
D. Any New Information of Substantial Importance Requiring New Analysis or Verification? Pursuant to Section 15162(a)(3) of the CEQA Guidelines, this column indicates whether new information “of substantial importance” is available requiring an update to the analysis of a previous EIR to verify that the environmental conclusions and mitigations remain valid. Any such information is only relevant if it “was not known and could not have been known with reasonable diligence at the time of the previous EIR.” To be relevant in this context, such new information must show one or more 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.

If the new information shows the existence of new significant effects or significant effects that are substantially more severe than were previously disclosed, then new mitigation measures should be considered.

If the new information shows that previously rejected mitigation measures or alternatives are now feasible, such measures or alternatives should be considered again.

If the new information shows the existence of mitigation measures or alternatives that are (i) considerably different from those included in the prior EIR and (ii) able to substantially reduce one or more significant effects, then such mitigation measures or alternatives also should be considered.

E. Prior Environmental Document Mitigations Implemented or Mitigations Address Impacts.

Pursuant to Section 15162(a)(3) of the CEQA Guidelines, this column indicates whether the EIR provides mitigations to address effects in the related impact category. If N/A is indicated, the EIR and this checklist conclude that the impact does not occur with this project and, therefore, no mitigation is needed.

Lindenville Specific Plan 39 Addendum
City of South San Francisco September 2023

DISCUSSION AND MITIGATION SECTIONS
Discussion
A discussion of the elements of the checklist is provided under each environmental category in order to clarify the answers. The discussion provides information about the particular environmental issue, how the project relates to the issue and the status of any mitigation that may be required or that has already been implemented.

Standard Mitigation Measures
Applicable standard mitigation measures are listed under each environmental category.

EIR Mitigation Measures
Applicable mitigation measures from previous EIRs that apply to the changes or new information are referenced under each environmental category.

Special Mitigation Measures
If changes or new information involve new impacts, special mitigations will be listed which will be included as project conditions to address those impacts.

Lindenville Specific Plan 40 Addendum
City of South San Francisco September 2023

3.1 AESTHETICS
A. Where
Impact Was
Analyzed in
Prior
Environmental
Documents.

Would the project:
a. Have a substantial adverse
effect on a scenic vista?
2040 General
Plan EIR pp.

3.1-12-3.1-14
No No No N/A
b. Substantially damage scenic
resources, including, but not
limited to, trees, rock
outcroppings, and historic
buildings within a state
scenic highway?
2040 General
Plan EIR pp.

3.1-14-3.1-16.

No No No N/A
c. In non-urbanized areas,
substantially degrade the
existing visual character or
quality of public views of
the site and its
surroundings?5If the project
is in an urbanized area,
would the project conflict
with applicable zoning and
other regulations governing
scenic quality?
2040 General
Plan EIR pp.

3.1-16-3.1-17.

No No No N/A
d. Create a new source of
substantial light or glare
which would adversely
affect day or nighttime
views in the area?
2040 General
Plan EIR pp.

3.1-18.

No No No N/A

3.1.1 Existing Setting
The existing aesthetics setting, including regulatory framework, has not substantially changed since the certification of the 2040 General Plan EIR.

The Specific Plan area is characterized as low-density industrial and is developed with large blocks of industrial and warehouse buildings of varying sizes, and paved parking with minimal landscaping.

The style of buildings within the Specific Plan area are predominantly utilitarian with concrete, metal sheets, and stucco facades.
5 Public views are those that are experienced from publicly accessible vantage point.

Lindenville Specific Plan 41 Addendum
City of South San Francisco September 2023

3.1.2 Discussion
The 2040 General Plan EIR concluded that the build-out of the 2040 General Plan would result in less than significant impacts to aesthetic resources.
a. The Specific Plan area is relatively flat and views of the South San Francisco Hillside Sign (Sign Hill), San Bruno Mountain, the Coast Range, and the San Francisco Bay are limited. Colma Creek, which the City identifies as a scenic resource, passes through the Specific Plan area. The portion of Colma Creek that passes through the Specific Plan is channelized in a concrete channel. Along Colma Creek, the Specific Plan would overall reduce the planned residential density at South Spruce Avenue by changing the land use designation from High Density Mixed Use to Low Density Mixed Use (see ID #3 of Table 2.2-4 and Figure 2.2-3), and replace residential/commercial as an allowed use with industrial east of the Caltrain railroad by changing the land use designation from High Density Mixed Use to Mixed Industrial High (see ID #5 of Table 2.2-4 and Figure 2.2-3). The change from High Density Mixed Use to Low Density Mixed Use would reduce the maximum FAR from 4.5 to 2.25 and residential density from 180 du/ac to 60 du/ac. The change from High Density Mixed Use to Mixed Industrial High would reduce the maximum FAR from 4.5 to 2.0 and residential density from 180 du/ac to 0. These changes would substantially reduce the building mass and scale allowed along Colma Creek
Similar to what was assumed in the 2040 General Plan EIR, future development under the Specific Plan would alter the existing views surrounding Colma Creek. However, the Specific Plan also proposes to transform South Canal Street, which is adjacent to Colma Creek, into a greenbelt with blue-green infrastructure.
6 The Specific Plan also includes Policy LU-6.3, which would increase the existing building setbacks from Colma Creek and create development standards to ensure highquality design along Colma Creek, and Chapter 5.5.3 Regenerative Landscapes, which requires regenerative landscape7along Colma Creek to enhance the view of the Colma Creek in the Specific Plan area.

In addition, there are General Plan policies related to improving the visual character along Colma Creek, including General Plan Policy SA-24.3, which promotes high-quality building design along Colma Creek, and General Plan Policy LU-8.7, which promotes the restoration of Colma Creek. The Specific Plan would be consistent with these policies. Future developments within the Specific Plan area would be subject to the City’s design review process (Municipal Code Chapter 20.480 Design Review), which would ensure developments are consistent with the relevant City design policies to include high-quality design that preserve or enhance existing visual resources. For these reasons, the Specific Plan would result in the same less than significant impact on scenic vistas as disclosed in the 2040 General Plan EIR.
b. There are no officially designated State Scenic Highways in the Specific Plan area, nor is the Specific Plan area visible from a designated State Scenic Highway. The proposed Specific Plan 6 In contrast to the human engineered “gray” infrastructure, such as underground pipes or roadside swales, the nature-based “blue-green” infrastructure refers to using natural and semi-natural features to manage stormwater runoff and flooding, such as rain gardens, green streets. 7 Regenerative landscapes incorporate natural elements such as native and drought tolerant plants that improve soil conditions and allow for enhanced biodiversity, reduced water and energy consumption, and reduced runoff and erosion.

Lindenville Specific Plan 42 Addendum
City of South San Francisco September 2023
would not, therefore, damage scenic resources within a State Scenic Highway and there would be no impact. This is the same impact as disclosed in the 2040 General Plan EIR. c. The Specific Plan area is located within an urbanized area. Future developments within the Specific Plan area are subject to the City’s 2040 General Plan policies and Municipal Code design and development standards, such as General Plan policy LU-4.5, which requires new development to be compatible with existing residential neighborhoods, LU-4.6, which requires design guidelines for residential neighborhoods to promote high-quality design, and LU-5.2, which requires high-quality design and development standards for research and development companies. The Municipal Code contains the Zoning Code, which contains architectural guidelines, design review criteria, lot and development standards, landscaping requirements, and other regulations in order to promote aesthetic quality within the City. Future development under the Specific Plan would be subject to the City’s design review process, which would ensure compliance with the City’s regulations related to scenic quality in urbanized areas.

The Specific Plan includes design and development standards and policies to redevelop the Specific Plan area from an industrial area to an area with a diverse mix of land uses with high-quality design, open spaces, and blue-green infrastructure (nature-based stormwater infrastructure) while retaining industrial uses. Chapter 4 Design and Development Standards of the Specific Plan contains development standards specific for the Specific Plan area based on the character area (as shown on Figure 2.2-2) and zoning districts (as shown on Figure 2.2-4), which define the “look and feel” of each character area. The Specific Plan Policy DD-2.1 encourages buildings of varied building heights and sizes, Policy DD-2.2 encourages tall buildings to provide distinct open space, Policy DD-2.3 requires building massing to provide visually interesting facade, Policy DD-2.4 facilitates highquality architecture to create a coherent place, and Policy DD-3.2 requires dedication of new public park and open spaces. The City’s design review process would ensure future developments are consistent with the applicable City regulations governing scenic quality. For these reasons, implementation of the proposed Specific Plan would result in the same less than significant impact disclosed in the 2040 General Plan EIR.
d. Future development under the Specific Plan would create new sources of light and glare from exterior light fixtures, signage on businesses, interior lighting, headlights from vehicles, building surfaces and vehicle surfaces. As described in Section 2.3 Project Description and depicted on Table

2.2-2, the 2040 General Plan would allow a buildout of 5,580 residential units and 9,799,668 square feet of non-residential development within the Specific Plan area. Compared to the 2040 General Plan buildout, the Specific Plan would increase the residential buildout by 1 dwelling unit and nonresidential buildout by 308,932 square feet, which would result in additional sources of light and glare than what was assumed in the 2040 General Plan EIR. Future development, however, would be subject to Municipal Code, which establishes regulations to minimize sky brightness, glare, light trespassing across property lines, and disruption to nocturnal ecosystems, and the California Energy Code (Title 24), which regulate design of lighting, such as maximum power and brightness, shielding, and sensor controls to turn lights on and off. The Specific Plan also includes Policy OS3.4, which requires development to mitigate lighting impacts by integrating “dark sky” best practices, and Chapter 5.7.9 Exterior Lighting, which prohibits lighting design that could provide a visual hazard to aircraft, requires lighting near habitat areas to only illuminate areas of human use, and requires development projects to complete lighting studies for exterior lighting. Future development under the Specific Plan, in compliance with applicable design standards regulating light and glare, Lindenville Specific Plan 43 Addendum
City of South San Francisco September 2023
would not result in significant light and glare impacts. For these reasons, implementation of the proposed Specific Plan would result in the same less than significant light and glare impact disclosed in the 2040 General Plan EIR.

3.1.3 Conclusion
The proposed project would not result in a new significant aesthetic impact or a substantial increase in the severity of the aesthetic impacts disclosed in the 2040 General Plan EIR.

Lindenville Specific Plan 44 Addendum
City of South San Francisco September 2023

3.2 AGRICULTURE AND FORESTRY RESOURCES
A. Where
Impact Was
Analyzed in
Prior
Environmental
Documents.

Would the project:
a. Convert Prime Farmland,
Unique Farmland, or
Farmland of Statewide
Importance (Farmland), as
shown on the maps prepared
pursuant to the Farmland
Mapping and Monitoring
Program of the California
Resources Agency, to nonagricultural use?
2040 General
Plan EIR pp.
6-1 to 6-2
No No No N/A
b. Conflict with existing
zoning for agricultural use,
or a Williamson Act
contract?
2040 General
Plan EIR pp.
6-1 to 6-2
No No No N/A
c. Conflict with existing
zoning for, or cause
rezoning of, forest land (as
defined in Public Resources
Code Section 12220(g)),
timberland (as defined by
Public Resources Code
Section 4526), or timberland
zoned Timberland
Production (as defined by
Government Code Section
51104(g))?
2040 General
Plan EIR pp.
6-1 to 6-2
No No No N/A
d) Result in a loss of forest
land or conversion of forest
land to non-forest use?
2040 General
Plan EIR pp.
6-1 to 6-2
No No No N/A
e) Involve other changes in the
existing environment which,
due to their location or
nature, could result in
conversion of Farmland to
non-agricultural use or
conversion of forest land to
non-forest use?
2040 General
Plan EIR pp.
6-1 to 6-2
No No No N/A
Lindenville Specific Plan 45 Addendum
City of South San Francisco September 2023

3.2.1 Existing Setting
The existing agricultural and forestry resources setting, including regulatory framework, has not substantially changed since the certification of the 2040 General Plan EIR.

The Specific Plan area is located within an urban area of the City and is developed with urban uses.

According to the California Department of Conservation Important Farmland Map, the Specific Plan area is designated as “Urban and Built-Up Land.”8

3.2.2 Discussion
a-e. The 2040 General Plan EIR concluded that implementation of the 2040 General Plan would have no impact on agricultural or forestry resources. As discussed above, the Specific Plan area is located within an urban area of the City and is designated as Urban and Built-Up Land. There is no existing farmland or forestry land within the Specific Plan area. In addition, all parcels within the Specific Plan area are General Plan designated and zoned for urban development. For these reasons, implementation of the Specific Plan would not result in the conversion of Prime Farmland or Farmland of Statewide Importance to nonagricultural uses, nor would it conflict with any zoning for agricultural use or a Williamson Act Contract, or any zoning for forestland or timberland and would not result in loss or conversion of forestland to non-forest uses. This is the same impact as disclosed in the 2040 General Plan EIR.

3.2.3 Conclusion
The proposed project would not result in a new significant agricultural and forestry resources impact or a substantial increase in the severity of the agricultural and forestry resources impacts disclosed in the 2040 General Plan EIR.
8 California Department of Conservation. “California Important Farmland Time Series”. 2018. https://maps.conservation.ca.gov/dlrp/ciftimeseries/.

Lindenville Specific Plan 46 Addendum
City of South San Francisco September 2023

3.3 AIR QUALITY
Environmental Issue Area
A. Where
Impact Was
Analyzed in
Prior
Environmental
Documents.

Would the project:
a. Conflict with or obstruct
implementation of the
applicable air quality plan?
2040 General
Plan EIR pp.

3.2-35-3.2-50
No No No
MM AIR-1a,
MM AIR-1b,
MM TRANS1
b. Result in a cumulatively
considerable net increase of
any criteria pollutant for
which the project region is
non-attainment under an
applicable federal or state
ambient air quality
standard?
2040 General
Plan EIR pp.

3.2-50-3.2-54
No No No
MM AIR-1a,
MM TRANS1
c. Expose sensitive receptors
to substantial pollutant
concentrations?
2040 General
Plan EIR pp.

3.2-54-3.2-56
No No No MM AIR-1a,
MM AIR-1b
d. Result in other emissions
(such as those leading to
odors) adversely affecting a
substantial number of
people?
2040 General
Plan EIR pp.

3.2-57-3.2-58
No No No N/A

3.3.1 Existing Setting
The Specific Plan area generates air pollutant emissions from building operations and vehicle trips driving to and from the Specific Plan area.

Sensitive receptors adjacent to the Specific Plan area include the residential development 50 feet to the north across Railroad Avenue, immediately adjacent to the western Specific Plan area boundary and across Centennial Way Trail, and 40 feet to the south across Tanforan Avenue.

3.3.2 Discussion
The 2040 General Plan EIR concluded that buildout of the 2040 General Plan would result in significant and unavoidable air quality impacts even with mitigation incorporated due to inconsistency with the 2017 Clean Air Plan and a cumulatively considerable net increase in criteria air pollutants as a result of an increase in vehicle miles traveled (VMT) that outpaces the forecasted population growth through 2040. The 2040 General Plan EIR also concluded that buildout of the 2040 General Plan would result in a less than significant impact with mitigation incorporated for impacts to sensitive receptors, and a less than significant impact from odor emissions.

Lindenville Specific Plan 47 Addendum
City of South San Francisco September 2023
a. The City is located within the San Francisco Bay Area Air Basin (Air Basin), and the Bay Area Air Quality Management District (BAAQMD) is the agency primarily responsible for assuring that the federal and state ambient air quality standards are maintained in the Air Basin. The current air quality plan applicable to the proposed Specific Plan area is BAAQMD’s 2017 Bay Area Clean Air Plan (2017 CAP). According to the BAAQMD’s guidance, a proposed land use plan, such as the proposed Specific Plan, would be consistent with the air quality plan if it would: (1) support the primary goals of the air quality plan, (2) include applicable control measures from the air quality plan, (3) not disrupt or hinder implementation of any AQP control measures, and (4) the plan’s projected VMT increase must be less than or equal to its projected population growth.

The 2040 General Plan EIR concluded that while buildout of the 2040 General Plan would support the primary goals of the 2017 CAP, include applicable control measures from the 2017 CAP, and not disrupt or hinder implementation of any 2017 CAP control measures, it would increase VMT that outpaces the forecasted population growth through 2040.

The 2040 General Plan would allow a buildout of 5,580 residential units and 9,799,668 square feet of non-residential development within the Lindenville Specific Plan area. Compared to the 2040 General Plan buildout, the proposed Specific Plan would increase the residential buildout by 1 dwelling unit and non-residential buildout by 308,932 square feet, as shown on Table 2.2-1 in Section 2.2 in Project Description. In addition, as described in Section 2.2.2.1 General Plan Land Use Designations, the Specific Plan proposes changes to the General Plan land use of select parcels within the Specific Plan area, including the following:
• Reduce development intensity along Colma Creek by reducing the maximum mixed use density allowed at South Linden Avenue and changing the allowed use east of the Caltrain railroad from high-density mixed-use to industrial use (see ID #s 3, 4, 5, 6, and 7 of Table

2.2-4 and Figure 2.2-3).
• Increase the maximum mixed use density allowed along South Spruce Avenue and removing industrial as an allowed use (see ID #s 16, 17, and 18 of Table 2.2-4 and Figure 2.2-3). • Remove industrial as an allowed use and allow commercial use with a reduced density on the north side of Victory Avenue, and reduce maximum industrial density allowed and remove residential as an allowed use on the south side of Victory Avenue (see ID #s 11, 12, 13, and 14 of Table 2.2-4 and Figure 2.2-3).
• Reduce the high density mixed use area and expand the office use area west of South Maple Avenue in the southwestern corner of the Specific Plan area (see ID #15 of Table 2.2-4 and Figure 2.2-3).
• Reduce the mixed use density at the northwestern corner of the Specific Plan area (see ID #1 of Table 2.2-4 and Figure 2.2-3).
• Increase the mixed use density on South Linden Avenue north of North Canal Street (see ID #2 of Table 2.2-4 and Figure 2.2-3).
• Designated slivers of open space between South Maple Avenue and South Linden Avenue (see ID #s 8, 9, and 10 of Table 2.2-4 and Figure 2.2-3) Lindenville Specific Plan 48 Addendum
City of South San Francisco September 2023
Primary Goals of the 2017 CAP
The primary goals of the 2017 CAP are to attain air quality standards, reduce population exposure and protect public health, and reduce greenhouse gas (GHG) emissions and protect the climate. An analysis of the project’s consistency with the 2017 CAP goal of reducing GHG emissions and protecting the climate is discussed separately in Section 3.8 Greenhouse Gas Emissions. The proposed Specific Plan’s consistency with the 2017 CAP goals of attaining air quality standards and reducing population exposure and protecting the public health is discussed below.

Attain Air Quality Standards
The Air Basin is currently designated a nonattainment area for the federal O3 and PM2.5 standards and for the state O3, PM10, and PM2.5 standards.
9 The Specific Plan would be consistent with the 2017
CAP primary goal of achieving and maintaining attainment status for ambient air quality standards as it would further intensify land use development within an urbanized and transit-oriented area with access to jobs, neighborhood amenities, and services. Consistent with the development assumed in the 2040 General Plan EIR, the Specific Plan would also plan for efficient land uses by concentrating population, employment, and services within an already developed urban area with existing access to transit (BART and Caltrain), and consequently, reduce vehicle miles traveled per service population (residents plus employees) and related mobile source emissions, as further discussed below and in Section 3.16 Transportation.

In addition, future development under the Specific Plan would be subject to the City’s Municipal Code, 2040 General Plan policies, and Climate Action Plan regulations related to air quality improvement. Section 20.300.009 Lighting and Illumination of the Municipal Code requires outdoor lighting to be energy efficient, which reduces emissions from energy use. Chapter 20.480 Design Review of the Municipal Code requires design review for all projects that require a building permit, assigns design review authority for all projects requiring Planning Commission approval, and provides the City with additional decision-making authority related to future development projects to assist in reducing or avoiding impacts related to air quality. Section 20.300.010 Performance Standards of the Municipal Code establishes regulations related to air contaminants, requiring that uses, activities, and processes shall not operate in a manner that emit excessive dust, fumes, smoke, or particulate matter.

The 2040 General Plan includes Action CHEJ-3.2, which would promote the reduction of mobile source pollution from diesel-based trucks and vehicles that travel to, from, or through the city, Action CHEJ-3.2.2, which requires the City to manage truck idling in new residential neighborhoods in Lindenville and east of US 101, Action CHEJ-3.3.2, which encourages retrofitting of existing buildings to reduce indoor air pollution, Policy CR-6.1, which supports resilient building design which also improves indoor air quality, and Policy CR-6.5, which promotes a transportation system coordinated with air quality improvements.

The city’s Climate Action Plan includes several actions that assist in reducing or avoiding impacts related to air quality. Action CE 1.1, CE 1.3, and CE 1.6 promote solar or renewable energy usage which would indirectly reduce air quality emissions. Action TL 1.1, TL 2.2, and TL 2.6 promote the 9 Bay Area Air Quality Management District. “Air Quality Standards and Attainment Status.” Accessed August 16, 2023. https://www.baaqmd.gov/about-air-quality/research-and-data/air-quality-standards-and-attainment-status.

Lindenville Specific Plan 49 Addendum
City of South San Francisco September 2023
use of electric vehicles or a reduction in VMT which would result in a reduction in mobile source air emissions.

Chapter 3 Land Use of the Specific Plan also contains land use standards for regulating nonconforming industrial uses, which prohibits such buildings from being enlarged, extended, reconstituted or substituted, or substantially altered, unless its purpose is to mitigate environmental impacts.

Future development under the Specific Plan would be required to undergo their own CEQA environmental review, and complete a project-level air quality analysis to evaluate the project’s impacts on criteria air pollutants during project construction and operation. In addition, future development under the Specific Plan would be required to implement 2040 General Plan EIR mitigation measure MM AIR-1a, which is the BAAQMD-recommended dust control best management practices (BMPs), to reduce construction fugitive dust impacts to a less than significant level.
2040 General Plan EIR Mitigation Measure
MM AIR-1a: Individual development projects facilitated by the proposed project shall incorporate the following Basic Construction Mitigation Measures recommended by the Bay Area Air Quality Management District (BAAQMD):
• All exposed surfaces (e.g., parking areas, staging areas, soil piles, graded areas, and unpaved access roads) shall be watered two times per day. • All haul trucks transporting soil, sand, or other loose material off-site shall be covered.
• All visible mud or dirt trackout onto adjacent public roads shall be removed using wet power vacuum street sweepers at least once per day.

The use of dry power sweeping is prohibited.
• All vehicle speeds on unpaved roads shall be limited to 15 mph. • All roadways, driveways, and sidewalks to be paved shall be completed as soon as possible. Building pads shall be laid as soon as possible after grading unless seeding or soil binders are used.
• Idling times shall be minimized either by shutting equipment off when not in use or reducing the maximum idling time to 5 minutes (as required by the California Airborne Toxics Control Measure [ATCM] Title 13, Section 2485 of the California Code of Regulations). Clear signage shall be provided for construction workers at all access points. • All construction equipment shall be maintained and properly tuned in accordance with manufacturer’s specifications. All equipment shall be checked by a certified mechanic and determined to be running in proper condition prior to operation.
• Prior to the commencement of construction activities, individual project proponents shall post a publicly visible sign with the telephone number and person to contact at the Lead Agency regarding dust complaints. This Lindenville Specific Plan 50 Addendum
City of South San Francisco September 2023
person shall respond and take corrective action within 48 hours. The BAAQMD phone number shall also be visible to ensure compliance with applicable regulations.

Future development projects, with the implementation of MM AIR-1a, would reduce the construction fugitive dust emissions to a less than significant level.

Reduce Population Exposure and Protect Public Health
The 2040 General Plan would allow a buildout of 5,580 residential units and 9,799,668 square feet of non-residential development within the Specific Plan area. Compared to the 2040 General Plan buildout, the Specific Plan would increase the residential buildout by 1 dwelling unit and nonresidential buildout by 308,932 square feet. The Specific Plan would also change the land use designations within the Specific Plan area, where the industrial uses would be located on the southeastern portion of the Specific Plan area, mostly east of the Caltrain railroad and closer to US 101 and SFO, while the residential uses would be located on the northwestern portion of the Specific Plan area west of the Caltrain railroad and interfacing the existing residential uses. As further discussed below, the Specific Plan would result in the same VMT as what was estimated for the 2040 General Plan buildout, which would result in a reduced VMT per service population (residents plus employees) compared to existing conditions as a result of intensifying growth in an urbanized and transit-oriented area. The reduction in VMT per service population, would in turn, reduce the population’s exposure to toxic air contaminants (TACs) from transportation-related sources.

While the Specific Plan allows a mix of residential, commercial, industrial, and office uses within the Specific Plan area, and could place sensitive receptors next to land uses that generate toxic air contaminant sources, future development under the Specific Plan would be required to implement 2040 General Plan EIR MM AIR-1b, presented below, to ensure impacts related to exposing receptors to substantial pollutant concentrations would be reduced to a less than significant level. 2040 General Plan EIR Mitigation Measure
MM AIR-1b: Projects that may result in additional toxic air contaminants (TACs) that are located within 1,000 feet of a sensitive receptors(s) or would place sensitive receptors within 1,000 feet of uses generating TACs, such as roadways with volumes of 10,000 average annual daily trips or greater, shall implement Bay Area Air Quality Management District (BAAQMD) Guidelines and California Office of Environmental Health Hazard Assessment (OEHHA) policies and procedures requiring a Health Risk Assessments (HRA) for residential development and other sensitive receptors. Screening area distances may be increased on a case-by-case basis if an unusually large source or sources of hazardous emissions are proposed or currently exist. Based on the results of the HRA, identify and implement measures (such as air filtration systems) to reduce potential exposure to particulate matter, carbon monoxide, diesel fumes, and other potential health hazards. Measures identified in HRAs shall be included into the site development plan as a component of a proposed project.

Lindenville Specific Plan 51 Addendum
City of South San Francisco September 2023
Future development projects, with the implementation of MM AIR-1b, would reduce public health impacts to a less than significant level by requiring projects that generate TACs to complete a health risk assessment and implement necessary measures to reduce impacts to a less than significant level.

Applicable Control Measures from the 2017 CAP
The 2017 Clean Air Plan contains 55 control measures aimed at reducing air pollution in the Bay Area. These include control measures addressing stationary, area, mobile source, and transportation emissions. They also include control measures designed to protect the climate and promote mixed use, compact development to reduce vehicle emissions and exposure to pollutants from stationary and mobile sources. BAAQMD encourages lead agencies to incorporate these measures into plan elements. As summarized in Table 3.3-1 below, the Specific Plan is consistent with the applicable control measures from the 2017 CAP.

Table 3.3-1: Specific Plan Consistency with the 2017 Clean Air Plan Control Measures
2017 Clean Air Plan Control
Measure
Consistent
with Control
Measure?
Discussion
TR2 (Trip Reduction Programs):

Encourage trip reduction policies
and programs in local plans, e.g.,
general and specific plans while
providing grants to support trip
reduction efforts. Encourage local
governments to require mitigation of
vehicle travel as part of new
development approval, to adopt
transit benefits ordinances in order to
reduce transit costs to employees,
and to develop innovative ways to
encourage rideshare, transit, cycling,
and walking for work trips.

Yes Development under the Specific plan would
be subject to the City’s Transportation
Ordinance (Municipal Code Chapter 20.400)
and required to implement a Transportation
Demand Management (TDM) program that
includes a set of strategies, measures, and
incentives to encourage walking, bicycling,
transit use, and carpooling.

TR9 (Bicycle and Pedestrian Access
Facilities): Encourage planning for
bicycle and pedestrian facilities in
local plans, e.g., general and specific
plans, fund bike lanes, routes, paths
and bicycle parking facilities.

Yes Chapter 6.1 Mobility Goals and Policies of
the Specific Plan outlines goals and policies
of transforming the Specific Plan area from an
auto-oriented to a multimodal-oriented area
with low-stress pedestrian and bicycle
facilities throughout the Specific Plan area,
creating shorter blocks within new streets to
support bicycle and pedestrian connections,
and prioritizing pedestrian and bicycle access
in site design.

Chapter 6.2 Mobility Framework of the
Specific Plan establishes pedestrian and
bicycle priority streets within the Specific
Plan area. The pedestrian priority streets
incorporate wider sidewalks, landscaping,
Lindenville Specific Plan 52 Addendum
City of South San Francisco September 2023
Table 3.3-1: Specific Plan Consistency with the 2017 Clean Air Plan Control Measures
2017 Clean Air Plan Control
Measure
Consistent
with Control
Measure?
Discussion
parklets, curb extensions, and other traffic
calming features to create walkable
environments in support of active ground
floor land uses. The bicycle priority streets
incorporate low-stress bicycle facilities that
accommodate people of all ages and abilities
to facilitate cross-town travel and local access.

Chapter 6.3 Complete Street Guidance of the
Specific Plan provides standards to transform
streets within the Specific Plan area into
complete streets with bicycle and pedestrian
facilities.

EN2 (Decrease Electricity Demand):

Work with local governments to
adopt additional energy efficiency
policies and programs. Support local
government energy efficiency
program via best practices, model
ordinances, and technical support.

Work with partners to develop
messaging to decrease electricity
demand during peak times.

Yes Future development under the Specific Plan
would incorporate energy efficient systems as
required under the current Title 24 as adopted
and amended in Municipal Code Chapter

12.26. In addition, the Specific Plan Chapter

4.4 Form-Based Zone Design Standards
establishes design standards for including
passive shading on building facades, and
Policy I-5.3 encourages installation of solar
arrays on roofs, parking lots, and shade
structures paired with battery storage.

BL4 (Urban Heat Island Mitigation):

Develop and urge adoption of a
model ordinance for “cool parking”
that promotes the use of cool surface
treatments for new parking facilities,
as well existing surface lots
undergoing resurfacing. Develop and
promote adoption of model building
code requirements for new
construction or reroofing/roofing
upgrades for commercial and
residential multi-family housing.

Collaborate with expert partners to
perform outreach to cities and
counties to make them aware of cool
roofing and cool paving techniques,
and of new tools available.

Yes Future development under the Specific Plan
would be subject to the current Title 24 cool
roof requirement. In addition, the Specific
Plan proposes blue-green infrastructure
throughout the Specific Plan area, which
would reduce the urban heat island effect
within the city. Chapter 5.7.3 Hardscape
Materials of the Specific Plan also
recommends using high reflectance paving for
hardscapes within the proposed open space.

Chapter 5.7.5 Planting and Vegetation of the
Specific Plan includes tree selection
guidelines to select native species with
sufficient canopy to reduce heat island effect.

NW2 (Urban Tree Planting):

Develop or identify an existing
model municipal tree planting
ordinance and encourage local
governments to adopt such an
ordinance. Include tree planting
Yes Future development under the Specific Plan
would be subject to Chapter 13.30 of the
Municipal Code, which provides standards
and requirements for the protection of certain
large trees and trees with unique
characteristics; provides standards and
Lindenville Specific Plan 53 Addendum
City of South San Francisco September 2023
Table 3.3-1: Specific Plan Consistency with the 2017 Clean Air Plan Control Measures
2017 Clean Air Plan Control
Measure
Consistent
with Control
Measure?
Discussion
recommendations the Air District’s
technical guidance, best practices for
local plans and CEQA review.
requirements for planting and maintenance of
trees for new development; and establishes
recommended standards for planting and
maintaining trees on property that is already
developed. In addition, Chapter 5.7.5 Planting
and Vegetation of the Specific Plan includes
tree selection guideline to select native
species with sufficient canopy to reduce heat
island effect.

WA3 (Green Waste Diversion):

Develop model policies to facilitate
local adoption of ordinances and
programs to reduce the amount of
green waste going to landfills.

Yes Future development under the Specific Plan
would be subject to the City’s Waste
Reduction Plan to ensure consistency with the
state’s waste reduction goals.

WA4 (Recycling and Waste
Reduction): Develop or identify and
promote model ordinances on
community-wide zero-waste goals
and recycling of construction and
demolition materials in commercial
and public construction projects.

Yes Future development under the Specific Plan
would be subject to Chapter 15.60 of the
Municipal Code by submitting a recycling
management plan to redirect recyclable
construction materials away from landfills.

WR2 (Support Water Conservation):

Develop a list of best practices that
reduce water consumption and
increase on-site water recycling in
new and existing buildings;
incorporate into local planning
guidance.

Yes Future development under the Specific Plan
would be subject to all applicable water
conserving requirements of Title 24,
California Green Building Standards Code
(CALGreen) water efficiency requirements,
General Plan policies, and Municipal Code, as
well as requirements of the National Pollutant
Discharge Elimination System (NPDES)
permit. In addition, the Specific Plan includes
guidelines for including energy efficient
irrigation systems in the proposed open space.

Source: Bay Area Air Quality Management District. Final 2017 Clean Air Plan. April 19, 2017.

As shown in Table 3.3-1 above, the proposed project would be consistent with the 2017 CAP control measures and would not hinder the implementation of the 2017 CAP control measures.

VMT Per Capita
As previously discussed, one of the criteria for determining project consistency with the 2017 Clean Air Plan is determining if the proposed plan's projected VMT increase is less than or equal to its projected population increase. The 2040 General Plan EIR identified that buildout of the 2040 General Plan would increase annual VMT from 3,387,200 to 6,585,400 (94.42 percent increase) and increase the population from 67,200 to 108,100 (60.86 percent increase), compared to existing conditions. It Lindenville Specific Plan 54 Addendum
City of South San Francisco September 2023
should be noted that the 2040 General Plan EIR analysis strictly looked at the City’s total annual VMT (from residents, employees, and visitors) in relation to the projected population (residents only).

Therefore, the Addendum utilizes the same approach to determine consistency with the 2017 Clean Air Plan. Compared to the 2040 General Plan, the Specific Plan would result in a net increase of 2 residents and 252 employees. As further discussed in Section 3.16 Transportation, the annual VMT from implementation of the Specific Plan would result in the same VMT as what was identified in the 2040 General Plan EIR due to placing the added jobs within half a mile of the San Bruno BART station.

While the Specific Plan would increase the population (residents only) within the Specific Plan area, the additional growth would be reallocated from the East of 101 area, and therefore, not increase the City’s overall population.

As required by the 2040 General Plan EIR MM TRANS-1, the City adopted its TDM Ordinance (Municipal Code Chapter 20.400) and would be required to update the TDM ordinance every five to ten years.
2040 General Plan EIR Mitigation Measure
MM TRANS-1: Transportation Demand Management
To reduce Vehicle Miles Traveled (VMT), the City shall implement its Transportation Demand Management (TDM) Ordinance as part of the Zoning Code Amendments and parking requirements. The City shall also update its TDM Ordinance and parking requirements every five to ten years and establish an East of 101 Area Trip Cap, to achieve the maximum feasible reductions in vehicle travel. The City shall achieve the performance standards outlined in the TDM Ordinance.

The City shall update its TDM Ordinance every 5 to 10 years to limit Total VMT and Work-Based VMT by incentivizing use of transit and active transportation and disincentivizing auto use. The TDM Ordinance shall cover all development projects generating greater than 100 daily trips, with the most stringent requirements for office/Research and Development (R&D) land uses that disproportionately account for the highest rates of VMT in the City. Development projects shall implement a combination of TDM programs, services, and infrastructure improvements, including but not limited to: establishing trip reduction programs; subsidizing transit and active transportation use; coordinating carpooling and vanpooling; encouraging telecommuting and flexible work schedules; designing site plans to prioritize pedestrian, bicycle, and transit travel; funding first/last mile shuttle services; establishing site-specific trip caps; managing parking supply; and constructing transit and active transportation capital improvements. Developments shall be subject to annual monitoring. The City shall establish an administrative fine structure for developments found to be out of compliance and apply any revenues from fines to infrastructure and services aimed at reducing VMT.

The City shall establish an East of 101 Area Trip Cap to support the monitoring of vehicle trip activity and focus efforts to reduce VMT. The area-wide trip cap shall Lindenville Specific Plan 55 Addendum
City of South San Francisco September 2023
apply to the high density employment uses in the East of 101 Area. The City shall conduct annual traffic counts along the cordon area perimeter. Should the trip cap be reached, the City shall consider corrective actions such as: revising mode share targets for projects subject to the TDM Ordinance, identifying new funding measures for TDM services, implementing new vehicle user charges, creating new street connections, or slowing the pace of development approvals within the cordon zone.

The City shall update its parking requirements every 5 to 10 years to align with its TDM Ordinance and East of 101 Area Trip Cap. The City shall establish parking maximums for office/R&D uses to ensure that VMT reduction goals are incorporated into the design of development projects.

Future development under the Specific Plan would also be subject to the City’s TDM Ordinance and required to implement a TDM program. The 2040 General Plan EIR concluded that buildout of the 2040 General Plan, even with implementation of MM TRANS-1 to require TDMs, would not be able to reduce the VMT impacts to a less than significant level, and that the VMT increase would outpace population growth. Therefore, the Specific Plan, which would generate the same VMT and result in the same population as what was identified in the 2040 General Plan, would also contribute to the 2040 General Plan EIR’s significant and unavoidable impact related to VMT growing at a faster rate than population growth.
b. The criteria identified by BAAQMD for determining plan-level significance with respect to criteria air pollutants and ozone precursors is by determining project consistency with the current air quality plan control measures, which are intended to ensure the region's achievement and maintenance of attainment of federal and state air quality standards, and if its projected VMT increase is less than or equal to its projected population increase. As discussed under checklist question a, the Specific Plan would be consistent with the applicable control measures of the 2017 Clean Air Plan, however it would result in VMT that outpaces the population growth.

Similar to the 2040 General Plan buildout, future development under the Specific Plan would result in short-term construction-related criteria pollutant emissions. Fugitive dust emissions would typically be greatest during building demolition, site preparation, and grading due to the disturbance of soils and transport of material. NOX emissions would also result from the combustion of diesel fuels used to power off-road heavy-duty vehicles and equipment (e.g., backhoes, bulldozers, excavators). The types and quantity of equipment, as well as duration of construction activities, would be project specific, for example, larger projects would require more equipment over a longer timeframe than that required for redevelopment of smaller projects. While BAAQMD does not require plan-level threshold of significance for construction emissions, it contains recommended project-level thresholds that future development projects would be subject to. For fugitive dust emissions, implementing dust control BMPs would reduce impacts to a less than significant level. As described above, future development projects under the Specific Plan would be required to implement MM AIR-1a, which includes the dust control measures recommended by the BAAQMD CEQA Air Quality Guidelines, to reduce its construction fugitive dust emissions impacts to a less than significant level.

Similar to the 2040 General Plan buildout, future development under the Specific Plan would result in operational-related criteria pollutant emissions. Operational criteria air pollutant emissions from Lindenville Specific Plan 56 Addendum
City of South San Francisco September 2023
developments come from various emission sources such as vehicle emissions, the use of outdoor landscape maintenance equipment, use of consumer products such as cleaning products, use of fireplaces and hearths, and periodic reapplication of architectural coatings. As described above, the 2040 General Plan would allow a buildout of 5,580 residential units and 9,799,668 square feet of nonresidential development within the Specific Plan area. Compared to the 2040 General Plan buildout, the Specific Plan would increase the residential buildout by 1 dwelling unit and non-residential buildout by 308,932 square feet. Of the 308,932 square feet of non-residential development, 268,214 square feet are existing service and industrial development. The existing service and industrial development are part of the existing conditions, and therefore, retaining the existing development would not change the existing operational criteria air pollutant emissions. The increase in planned retail office/research, and residential development would be reallocated from the East of 101 area and not increase the overall planned buildout of the 2040 General Plan EIR. Future development under the Specific Plan would be subject to the City’s standard CEQA review process and assess project-specific criteria air pollutant emissions in relation to the BAAQMD significance thresholds, which may result in additional mitigation measures to reduce any potential impacts that could occur.

Based on the discussion above, the Specific Plan would contribute to the 2040 General Plan EIR’s significant and unavoidable impact related to criteria air pollutant impacts as a result of VMT growing at a faster rate than population growth.
c. Local risks are primarily associated with exposure of toxic air contaminant (TAC) emissions. TAC emissions can come from various sources, such as stationary sources (dry cleaners, diesel backup generators, and gas stations), mobile sources (vehicles on high-volume roads), off-road mobile sources (construction equipment), and diesel-powered trains traveling on the railroad. The Specific Plan would change the land use designations of select parcels within the Specific plan area. The Specific Plan would reduce the mixed use density allowed at the northwestern corner of the Specific Plan area (see ID #1 of Table 2.2-4 and Figure 2.2-3), increase mixed use density on South Linden Avenue north of North Canal Street (see ID #2 on of Table 2.2-4 and Figure 2.2-3), increase the maximum mixed use density allowed along South Spruce Avenue and remove industrial as an allowed use (see ID #17 and #18 of Table 2.2-4 and Figure 2.2-3), and change the allowed use on the northeast corner of Tanforan Avenue and Dollar Avenue to industrial use (see ID # 19 of Table 2.2-4 and Figure 2.2-3). These changes would overall place more residential development on the northwestern portion of the Specific Plan area and keep the industrial use in the southeastern portion of the Specific Plan area, consistent with the surrounding land uses. As discussed above, future development under the Specific Plan would result in construction activities that would emit TACs, and once operational, may contain operational equipment that emit TACs. Future development under the Specific Plan would be subject to the City’s standard CEQA review process, and as required under MM AIR-1a and MM AIR-1b, required to implement fugitive dust BMPs during construction, and development proposed within 1,000 feet of a sensitive receptor would be required to complete a health risk assessment to identify any health risk impacts and mitigation measures to reduce such impacts to a less than significant level. With implementation of MM AIR-1a and MM AIR-1b, future development under the Specific Plan would result in the same less than significant impact to sensitive receptors. d. Consistent with the BAAQMD’s CEQA Air Quality Guidelines, a plan-level analysis must acknowledge odor sources within the planning area and identify policies, goals, and objectives aimed at reducing potential odor impacts to ensure that potential impacts would be less than significant.

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According to the BAAQMD CEQA Air Quality Guidelines, land uses associated with odor complaints typically include agricultural operations, wastewater treatment plants, landfills, and certain industrial operations such as chemical and other manufacturing. While odors do not present a health risk of themselves, they are often considered a nuisance by people who live, work, or otherwise are located near outdoor odor sources. The BAAQMD CEQA Air Quality Guidelines identify a screening distance for 1 and 2 miles for the most common odor-generating land uses. Projects located outside of these screening distances would be presumed to not be exposed to odors, while projects within these screening distances present a potential to be exposed to odors. Compared to the 2040 General Plan buildout for the Specific Plan area, the net new retail, office/research and development, and residential uses proposed by the Specific Plan are not land uses associated with odor complaints.

Furthermore, Section 20.300.010 Performance Standards of the Municipal Code establishes regulations related to odors and restricts uses, processes, or activities that produce objectionable odors that are perceptible without instruments by a reasonable person at the lot lines of a site. Municipal Code Sections 20.410.004 Indoor Commercial Cannabis Cultivation, 20.410.005 Commercial Cannabis Manufacturing, and 20.410.006 Cannabis Testing Operations require that operators install and maintain, in good working-order, air treatment or other ventilation systems to prevent odors generated from the cultivation of cannabis from being detected within 10 feet of the structure in which commercial cannabis cultivation occurs. BAAQMD Regulation 7 Odorous Substances, which contains emission limitations on odorous substances, would apply to any odor source within the proposed Specific Plan area. In addition, Chapter 3.3 Land Use of the Specific Plan includes land use standards prohibiting new industrial uses within existing nonconforming industrial buildings from impacting the surrounding properties with odors, and Chapter 3.7 Arts and Makers includes guidelines that prohibit commercial and industrial uses in the Arts and Makers Overlay from producing excessive odor beyond the property line.

Therefore, compliance with the applicable regulations in the Municipal Code, BAAQMD rules and regulations, and Specific Plan standards and guidelines would result in the same less than significant odor emissions disclosed in the 2040 General Plan.

3.3.3 Conclusion
The proposed project would not result in a new significant air quality impact or a substantial increase in the severity of the air quality impacts disclosed in the 2040 General Plan EIR.

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3.4 BIOLOGICAL RESOURCES
Environmental Issue Area
A. Where
Impact Was
Analyzed in
Prior
Environmental
Documents.

Would the project:
a. Have a substantial adverse
effect, either directly or
through habitat
modifications, on any species
identified as a candidate,
sensitive, or special status
species in local or regional
plans, policies, or regulations,
or by the California
Department of Fish and
Wildlife (CDFW) or United
States Fish and Wildlife
Service (USFWS)?
2040 General
Plan EIR pp.

3.3-18 to 3.3-
22 No No No MM BIO-1
b. Have a substantial adverse
effect on any riparian habitat
or other sensitive natural
community identified in local
or regional plans, policies,
regulations, or by the CDFW
or USFWS?
2040 General
Plan EIR pp.

3.3-22 to 3.3-
23 No No No N/A
c. Have a substantial adverse
effect on state or federally
protected wetlands
(including, but not limited to,
marsh, vernal pool, coastal,
etc.) through direct removal,
filling, hydrological
interruption, or other means?
2040 General
Plan EIR pp.

3.3-23 to 3.3-
26 No No No MM BIO-3
d. Interfere substantially with
the movement of any native
resident or migratory fish and
wildlife species or with
established native resident or
migratory wildlife corridors,
or impede the use of native
wildlife nursery sites?
2040 General
Plan EIR pp.

3.3-26 to 3.3-
27 No No No MM BIO-1,
MM BIO-3
e. Conflict with any local
policies or ordinances
protecting biological
resources, such as a tree
preservation policy or
ordinance?
2040 General
Plan EIR pp.

3.3-27 to 3.3-
28 No No No N/A
Lindenville Specific Plan 59 Addendum
City of South San Francisco September 2023
Environmental Issue Area
A. Where
Impact Was
Analyzed in
Prior
Environmental
Documents.

Would the project:
f. Conflict with the provisions
of an adopted Habitat
Conservation Plan, Natural
Community Conservation
Plan, or other approved local,
regional, or state habitat
conservation plan?
2040 General
Plan EIR pp.

3.3-28 to 3.3-
29 No No No N/A

3.4.1 Existing Setting
The existing biological setting, including regulatory framework, has not substantially changed since the certification of the 2040 General Plan EIR.

The Specific Plan area is approximately 400-acres (surrounded by urban development including buildings, roadways, hardscapes, and landscaping), and is predominantly developed with industrial uses. As shown in the 2040 General Plan EIR, the majority of the Specific Plan area is urban land and does not contain any ecologically sensitive habitat, except for the channelized portion of Colma Creek that runs through the northern portion of the Specific Plan area, and the Navigable Slough, which passes through the southern portion of the Specific Plan area, as shown on Figure 3.4-1. 10 The
primary biological resources within the Specific Plan area are landscaped trees, Colma Creek, and the Navigable Slough, which can provide nesting and foraging habitat to birds. Colma Creek and the Navigable Slough within the project area can also provide habitat for aquatic species. However, due to the modified conditions of Colma Creek and the Navigable Slough, these habitats are not likely to contain special-status plant and wildlife species.

3.4.2 Discussion
The 2040 General Plan EIR concluded that build-out of the 2040 General Plan would result in less than significant impacts to biological resources with mitigation incorporated, where relevant. a. The 2040 General Plan EIR concluded that implementation of the General Plan would have a less than significant impact on special-status species. Biological concerns identified in the 2040 General Plan EIR specific to the Specific Plan area are in regard to migratory and nesting birds, Colma Creek, and the Navigable Slough along the southeastern edge of the Specific Plan area. 10 City of South San Francisco. Draft Program Environmental Impact Report General Plan Update, Zoning Code Amendments, and Climate Action Plan City of South San Francisco, San Mateo County, California.

SCH#2021020064. June 24, 2022. Exhibit 3.3-1, Exhibit 3.3-2.

Source: City of South San Francisco, 2040 General Plan, October 2022.

Ecologically
SensiƟve Areas City of South San Francisco Caltrain StaƟon Caltrain
BART StaƟon
BART
Highway
Arterial Road
Local Road Waterbody
City Parks, Open Space, Streams
& Joint FaciliƟes
Context Parks
Unincorporated Area in
City Sphere
Ferry Terminal StaƟon

0. .25 5 1
Miles
LEGEND
Project Site
ECOLOGICALLY SENSITIVE HABITATS FIGURE 3.4-1
Lindenville Specific PlanCity of South San Francisco
60 Addendum
September 2023
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Migratory and Nesting Birds
Raptors (birds of prey) and nesting birds are protected by the Migratory Bird Treaty Act (MBTA) and the California Fish and Game Code. Urban-adapted raptors and other birds nesting could be disturbed by construction activities within the Specific Plan area and result in the loss of fertile eggs or nestlings, or otherwise lead to nest abandonment. Disturbance that causes abandonment and/or loss of reproductive efforts is considered a taking by the California Department of Fish and Wildlife (CDFW) and would constitute an impact.

In compliance with the MBTA and CDFW standard species management practices, future development under the Specific Plan must implement the 2040 General Plan EIR mitigation measure MM BIO-1.
2040 General Plan EIR Mitigation Measure
MM BIO-1: Special-status Species, Migratory Birds, and Nesting Birds Special-status species are those listed as Endangered, Threatened or Rare, or as Candidates for listing by the United States Fish and Wildlife Service (USFWS) and/or California Department of Fish and Wildlife (CDFW), or as Rare Plant Rank 1B or 2B species by the California Native Plant Society (CNPS). This designation also includes CDFW Species of Special Concern and Fully Protected Species. Applicants or sponsors of projects on sites where potential special-status species, migratory birds, or nesting birds are present shall retain a qualified Biologist to conduct a focused survey per applicable regulatory agency protocols to determine whether such species occur on a given project site. The project applicant or sponsor shall ensure that, if development of occupied habitat must occur, species impacts shall be avoided or minimized, and if required by a regulatory agency or the CEQA process, loss of wildlife habitat or individual plants shall be fully compensated on the site. If off-site mitigation is necessary, it shall occur within the South San Francisco Planning Area whenever possible, with a priority given to existing habitat mitigation banks. Habitat mitigation shall be accompanied by a long-term management plan and monitoring program prepared by a qualified Biologist, and include provisions for protection of mitigation lands in perpetuity through the establishment of easements and adequate funding for maintenance and monitoring.

Implementation of MM BIO-1.1 would protect special-status species, including raptors and nesting birds, by requiring future development under the Specific Plan to retain a qualified biologist to conduct habitat and pre-construction nesting surveys and provide mitigation to avoid disturbance of species and any loss of wildlife habitat. Consistent with the conclusions in the 2040 General Plan EIR, implementation of the Specific Plan, with implementation of MM BIO-1.1, would not result in significant impacts to migratory and nesting birds.

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Colma Creek and Navigable Slough
Colma Creek and the Navigable Slough, which are within the Specific Plan area, are identified ecologically sensitive areas in the 2040 General Plan EIR, as shown on Figure 3.4-1.

The Specific Plan proposes a greenbelt along Colma Creek, and a neighborhood park to the north of Colma Creek in order to provide a buffer between development and the creek, as shown on Figure

2.2-10. The Colma Creek greenbelt would increase the existing development setback from the existing Colma Creek right-of-way, by creating setbacks ranging from 50 to 140 feet, and including blue-green infrastructure as part of the greenbelt to improve stormwater quality. Along Colma Creek, the Specific Plan would overall reduce the planned residential density at South Spruce Avenue by changing the land use designation from High Density Mixed Use to Low Density Mixed Use (see ID #3 of Table 2.2-4 and Figure 2.2-3), and replace residential/commercial as an allowed use with industrial east of the Caltrain railroad by changing the land use designation from High Density Mixed Use to Mixed Industrial High (see ID #5 of Table 2.2-4 and Figure 2.2-3). The change from High Density Mixed Use to Low Density Mixed Use would reduce the maximum FAR from 4.5 to 2.25 and residential density from 180 du/ac to 60 du/ac. The change from High Density Mixed Use to Mixed Industrial High would reduce the maximum FAR from 4.5 to 2.0 and residential density from 180 du/ac to 0. These changes would substantially reduce the building mass and scale allowed along Colma Creek
There is an existing grass ditch that outfalls directly into the Navigable Slough. The Specific Plan identifies a stormwater infrastructure improvement to regrade the ditch to integrate bioretention cells and improve conveyance. Along the Navigable Slough, the proposed Specific Plan would increase the planned industrial density by changing the land use designation from Mixed Industrial to Mixed Industrial High (see ID #7 of Table 2.2-4 and Figure 2.2-3), which would increase the maximum FAR from 1.0 to 2.0, therefore, allowing additional development than what was assumed in the 2040 General Plan EIR.

General Plan Policy ES-3.3 requires the City to maintain development standards and guidelines for new construction within 80 feet of Colma Creek, such as maintaining or increasing building setbacks to support habitat areas.11 General Plan Policy ES-6.3 requires that permit applications for projects located within ecologically sensitive habitat areas to prepare site-specific biological assessments for review and approval by City Planning staff, and to incorporate the recommended measures during construction to protect ecologically sensitive habitat areas.12 Municipal Code Section 20.310.002 General Site and Building Design requires all development within 300 feet of an Urban Bird Refuge with uninterrupted glazed segments 24 square feet or larger to incorporate bird-safe glazing 11 Policy ES-3.3: Maintain development standards along Colma Creek to support habitat. Maintain development standards and guidelines for new construction within 80 feet that support urban ecology and ecosystem resilience.

Provide project applicants with a process for exemptions and/or offsets under limited circumstances. Standards include: • Requiring no net new impervious areas. • Maintaining (or increasing) building setbacks to support habitat areas. • Encouraging new construction to construct bioswales or similar features to treat runoff before it enters the creek. • Using a planting palette consisting of native species and species that provide valuable resources for native wildlife.
12 Policy ES-6.3: Conduct site-specific assessments for new development in ecologically sensitive habitat areas. On a parcel-by-parcel basis, require that permit applications for projects located within ecologically sensitive habitat areas, as shown on Figure 3.4-1, prepare site-specific biological assessments for review and approval by City Planning staff, and incorporation of the recommended measures during construction to protect ecologically sensitive habitat areas.

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measures; the City is in the process of amending this code to require all development within the City that proposes uninterrupted glazed segments 24 square feet or larger, to incorporate bird-safe glazing.13
Future development under the Specific Plan area that are within 80 feet of Colma Creek and along the Navigable Slough would be required to comply with General Plan Policy ES-3.3, ES-6.3, Municipal Code Section 20.310.002 General Site and Building Design (which would apply to all development), and, if special-status species are located on-site, implement MM BIO-1.1, identified above. In addition, the Specific Plan contains Policy LU-6.3, which increases building setbacks from Colma Creek to allow for improved habitat conditions, Chapter 5.4.1 Colma Creek Greenbelt, which establishes setbacks of the proposed greenbelt from Colma Creek, Chapter 5.7.9 Exterior Lighting, which requires lighting be diverted away from wildlife habitat and limited to human use areas, Policy OS-3.2, which requires native and biodiverse landscape in parks, open spaces, and public right-ofway, and Policy OS-3.3, which requires parks and open spaces be designed with bird-safe design and landscape/planting designs that reduce impervious surfaces and decrease stormwater runoff.

Consistent with the conclusions in the 2040 General Plan EIR, implementation of the Specific Plan, in compliance with General Plan Policies ES-3.3 and ES-6.3, MM BIO-1, and Specific Plan Policies LU-6.3, OS-3.2, OS-3.3, Chapters 5.4.1 and 5.7.9, would not result in significant impacts to specialstatus species within Colma Creek and the Navigable Slough. b, c. The Specific Plan area is comprised of mostly developed/landscaped habitat. Colma Creek and the Navigable Slough are the only identified aquatic habitats and ecologically sensitive habitats within the Specific Plan area. As discussed under checklist question a above, while the Specific Plan would change the land uses and density along Colma Creek and the Navigable Slough than what was assumed in the 2040 General Plan EIR, the 2040 General Plan contains Policies ES-3.3 and ES-6.3 and the Specific Plan contains Policies LU-6.3 and Chapter 5.4.1 Colma Creek Greenbelt, which require future development to maintain setbacks from Colma Creek and prepare biological assessments for development within identified ecologically sensitive areas, such as Colma Creek and the Navigable Slough. The proposed Specific Plan contains Policy OS-3.2, which would reduce stormwater runoff to Colma Creek and the Navigable Slough, and Chapter 5.7.9 Exterior Lighting, which would require lighting be diverted away from wildlife habitat and limited to human use areas.

In addition, future development within the Specific Plan area, where potential jurisdictional wetlands or waterways may be found, would be required to implement the 2040 General Plan EIR mitigation measure MM BIO-3, below.
2040 General Plan EIR Mitigation Measure
MM BIO-3: Assess Potential Wetland Impacts
Applicants or sponsors of projects on sites where potential jurisdictional wetlands or waterways are present shall retain a qualified Biologist/wetland regulatory specialist to conduct a site investigation and assess whether wetland or waterway features are jurisdictional with regard to the United States Army Corps of Engineers (USACE), Regional Water Quality Control Board (RWQCB), and/or California Department of Fish and Wildlife (CDFW). This investigation shall 13 Amendment to Municipal Code Section 20.310.002 General Site and Building Design is not part of the proposed project. The City anticipates completing this amendment in fall of 2023.

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include assessing potential impacts to wetlands and other waters of the United States and/or State. If a feature is found to be jurisdictional or potentially jurisdictional, the project applicant or sponsor shall comply with the appropriate permitting process with each agency claiming jurisdiction prior to disturbance of the feature, and a qualified Biologist/wetland regulatory specialist shall conduct a detailed wetland delineation if necessary.

Implementation of MM BIO-3 would reduce impacts to wetlands or waterways by requiring future development to formally delineate any potential jurisdictional wetlands or waterways and obtain necessary permits from each agency claiming jurisdiction. Consistent with the conclusions in the 2040 General Plan EIR, implementation of the Specific Plan, in compliance with General Plan Policies ES-3.3 and ES-6.3, Specific Plan Policy LU-6.3, and Specific Plan Chapter 5.4.1 Colma Creek Greenbelt, would not result in significant impacts to riparian habitat or other sensitive natural communities, such as wetlands or waterways.
d. The 2040 General Plan EIR concluded that implementation of the General Plan would have a less than significant impact on wildlife movement corridors and nursery sites with implementation of mitigation measures MM BIO-1 and MM BIO-3. The Specific Plan area is approximately one mile west of the San Francisco Bay, a major wildlife movement corridor and nursery site. As such, Colma Creek and the Navigable Slough of San Bruno Creek provide areas for wildlife movement. As described under checklist question a, while the Specific Plan proposes changes to land uses and intensity along Colma Creek and the Navigable Slough than what was assumed in the 2040 General Plan EIR, future development under the Specific Plan would be required to implement the 2040 General Plan EIR mitigation measures MM BIO-1 and MM BIO-3, which require site investigations and assessments for special-status species and wetland habitat. Implementation of these mitigation measures would ensure wildlife movement corridors are protected and not significantly impacted as a result of future development under the Specific Plan. In addition, future development projects within 80 feet of Colma Creek would comply with General Plan Policies ES-3.3, which requires compliance with development standards and guidelines related to development along Colma Creek, and ES-6.3, which requires development impacting ecologically sensitive areas (including Colma Creek and the Navigable Slough) to complete site-specific biological assessments, Specific Plan Policy LU-6.3 and Specific Plan Chapter 5.4.1 Colma Creek Greenbelt, which require buffers around Colma Creek, Policy OS-3.2, which requires reduction in stormwater runoff to Colma Creek and the Navigable Slough, and Chapter 5.7.9 Exterior Lighting, requires lighting be diverted away from wildlife habitat and limited to human use areas. These policies and requirements would minimize adverse effects on wildlife movement corridors or nurseries and result in a less than significant impact. This is the same impact as disclosed in the 2040 General Plan EIR.
e. The 2040 General Plan EIR concluded that implementation of the 2040 General Plan would not conflict with local polices or ordinances protecting biological resources, including Chapter 13.28 and

13.30 of the Municipal Code outlining the City’s Street Tree Preservation Policy and Tree Preservation standards, respectively. Future development projects within the Specific Plan area would be required to comply with these chapters of the Municipal Code, including obtaining a tree removal permit and providing replacement trees. In addition, development under the Specific Plan would be required to comply with General Plan Policy ES-4.1 and Specific Plan Chapter 5.5.4 Urban Forest, which require the City to expand the tree canopy coverage, and General Plan Policy ES-4.2, which requires the avoidance of tree removal wherever possible, and, if trees must be removed, Lindenville Specific Plan 65 Addendum
City of South San Francisco September 2023
replaced at a three to one ratio. Specific Plan Chapter 5.7.5 requires developments to design for native vegetation within the Specific Plan area. As discussed under checklist question a above, while the Specific Plan proposes changes to land uses and intensity along Colma Creek and the Navigable Slough than what was assumed in the 2040 General Plan EIR, future developments under the proposed Specific Plan would also be required to comply with the Municipal Code and General Plan policies. For these reasons, the proposed Specific Plan would not result in any new or more significant conflicts with local polices or ordinances protecting biological resources than previously disclosed in the 2040 General Plan EIR.
f. The 2040 General Plan EIR concluded that implementation of the 2040 General Plan would not conflict with an adopted habitat plan. There are two areas within the City covered by habitat conservation plans; Sign Hill Park and San Bruno Mountain State Park. In addition, the Bay Conservation and Development Commission (BCDC) has jurisdiction over land near the San Francisco Bay and the tidally influenced Navigable Slough. The Specific Plan area is 1.5-miles south of Sign Hill Park and San Bruno Mountain State Park. As such, it is not located within the Sign Hill Park or San Bruno Mountain habitat conservation plan areas. Any development that would require permits from the BCDC would be subject to the applicable permit requirements to mitigate any impacts. Thus, implementation of the Specific Plan would not conflict with an adopted habitat conservation plan or natural community conservation plan and any impact would be less than significant, consistent with the 2040 General Plan EIR.

3.4.3 Conclusion
The proposed project would not result in a new significant biological resources impact or a substantial increase in the severity of the biological resources impacts disclosed in the 2040 General Plan EIR.

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3.5 CULTURAL RESOURCES
Environmental Issue Area
A. Where
Impact Was
Analyzed in
Prior
Environmental
Documents.

Would the project:
a. Cause a substantial adverse
change in the significance of a
historical resource as defined
in §15064.5?
2040 General
Plan EIR pp.

3.4-32 to 3.3-
34 No No No N/A
b. Cause a substantial adverse
change in the significance of
an archaeological resource
pursuant to §15064.5?
2040 General
Plan EIR pp.

3.4-34 to 3.3-
36 No No No N/A
c. Disturb any human remains,
including those interred
outside the formal cemeteries?
2040 General
Plan EIR pp.

3.4-36
No No No N/A

3.5.1 Existing Setting
The existing cultural resources setting, including regulatory framework, has not substantially changed since the certification of the 2040 General Plan EIR.

There is one known historic resource located within the Specific Plan area. The historic resource is located at 499 Railroad Avenue and is the South City Lumber building. This building is a designated City Historic Landmark and is a two-story, wood-sided industrial building. There are no other known historic resources within the Specific Plan area.

There are several known archaeological sites within the City in both developed and undeveloped areas. The potential for additional archaeological sites to be found within the Specific Plan area varies depending on location and underlying geological conditions; however, areas closest to water sources, such as Colma Creek, have the greatest potential for buried archaeological resources to be found.14 There are at least two known archaeological resources within the Specific Plan area, one near Colma Creek, and one in the southern portion of the Specific Plan area.

3.5.2 Discussion
The 2040 General Plan EIR concluded that buildout of the 2040 General Plan would have a less than significant impact on historic resources through implementation of 2040 General Plan policies and compliance with the City’s Municipal Code.
14 City of South San Francisco. Draft Program Environmental Impact Report General Plan Update, Zoning Code Amendments, and Climate Action Plan City of South San Francisco, San Mateo County, California.

SCH#2021020064. June 24, 2022. Page 3.4-34.

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a. As discussed above, there is one known historic resource within the Specific Plan area, the South City Lumber building. The site containing the City Lumber building is currently designated Medium Density Mixed Use. The Specific Plan does not propose changes to the land use designation of the site, therefore, would not result in new cultural resources impacts to the site than what was identified in the 2040 General Plan EIR. Future development under the Specific Plan would be required to comply with General Plan Policy SA-2.2, which requires the City to protect historic buildings, Policy ES-9.5, which requires the preparation of historic reports and surveys as part of the environmental review process, and Sections 2.56.080 and 2.56.130 of the City’s Municipal Code, which require future development to preserve existing historic resources and obtain a permit for any alterations.15 In addition, there may be other historic resources present within the Specific Plan area that have not yet been surveyed, and to protect against the potential for demolition or alteration of historic structures, future development under the Specific Plan that would alter a building or structure greater than 45 years old, would undergo project-specific CEQA review and comply with Policy ES-9.5, including an assessment of any structures over 45 years in age proposed for alteration or demolition, in order to determine if that building or structure qualifies as a historic resource. For these reasons, implementation of the Specific Plan would not result in a new significant impact or substantially increase impacts to historic resources than what was disclosed in the 2040 General Plan EIR. b, c. The 2040 General Plan EIR concluded that buildout of the 2040 General Plan would have a less than significant impact on archaeological resources and human remains through implementation of General Polices, discussed below.

As noted above, areas near water sources have a greater potential for previously undiscovered archaeological resources. The Specific Plan area is in close proximity to the San Francisco Bay, and Colma Creek runs through the northern portion of the Specific Plan area. Redevelopment within the Specific Plan area, including near the creek, could impact previously undiscovered archaeological resources or human remains during excavation, construction, or infrastructure improvements. Similar to what was planned in the 2040 General Plan, the Specific Plan would allow redevelopment within the Specific Plan area. Redevelopment would involve excavation into native soils, which have the potential to contain sub-surface cultural resources. Future development under the Specific Plan would comply with General Plan Policies ES-10.1, which requires the City to maintain formal procedures for minimizing and mitigating impacts to archaeological resources, ES-10.3, which requires that development proposals be referred to the Northwest Information Center (NWIC) of the California Archaeological Inventory, Native American Heritage Commission (NAHC), and local Native American tribes, for review and recommendations regarding supplemental field investigation, ES-10.4, which requires a records review for any development proposed in areas of known archaeological resources, and ES-10.5, which mandates, if construction or grading activities result in the discovery of historic or prehistoric archaeological artifacts, all work within 100 feet of the discovery shall cease, the Economic and Community Development Department shall be notified, and the resources shall be examined by a qualified archaeologist for appropriate protection and 15 Policy SA-2.2: Protect historic buildings. Protect historic buildings and the local building fabric in the Downtown through adaptive reuse and other strategies. Policy ES-9.5 Require historic surveys as part of development project requirements. Require the submittal of historic reports and surveys prepared as part of the environmental review process.

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preservation measures.16 Consistent with General Plan Policies ES-10.1, ES-10.3, and ES-10.4, new development within the Specific Plan area would be required to conduct a records search with NWIC to determine the archaeological sensitivity of the site. In addition, the City would implement General Plan Policy ES-11.1, which requires the City to identify, preserve, and protect tribal cultural resources (TCRs), including traditional cultural landscapes, sacred sites, places, features, and objects, including historic or prehistoric ruins, burial grounds, cemeteries, and ceremonial sites in consultation or coordination with the appropriate Native American tribe(s).17 With implementation of General Plan Policies ES-10.1, ES-10.3, ES-10.4, ES-10.5, and ES-11.1, future development under the Specific Plan would result in the same less than significant archaeological resources and human remains impacts disclosed in the 2040 General Plan EIR.

3.5.3 Conclusion
The proposed project would not result in a new significant cultural resources impact or a substantial increase in the severity of the cultural resources impacts disclosed in the 2040 General Plan EIR. 16 Policy ES-10.1: Maintain archaeological procedures for new development. Maintain formal procedures for minimizing and mitigating impacts to archaeological resources. Policy ES-10.3: Require development proposals be referred to archaeological resources. Require that development proposals be referred to the Northwest Information Center of the California Archaeological Inventory, Native American Heritage Commission (NAHC), and local Native American tribes for review and recommendations regarding supplemental field investigation. Policy ES-10.4:

Ensure the protection of known archaeological resources through records review. Ensure the protection of known archaeological resources in the City by requiring a records review for any development proposed in areas of known resources. Policy ES-10.5: Discovery of significant historic or prehistoric archaeological artifacts. If construction or grading activities result in the discovery of significant historic or prehistoric archaeological artifacts, then all work within 100 feet of the discovery shall cease, the Economic and Community Development Department shall be notified, the resources shall be examined by a qualified archaeologist for appropriate protection and preservation measures; and work may only resume when appropriate protections are in place and have been approved by the Economic and Community Development Department.
17 Policy ES-11.1: Identification of tribal cultural resources. Encourage the identification, preservation, and protection of tribal cultural resources, traditional cultural landscapes, sacred sites, places, features, and objects, including historic or prehistoric ruins, burial grounds, cemeteries, and ceremonial sites in consultation or coordination with the appropriate Native America tribe(s), and shall ensure appropriate treatment of Native American and other human remains discovered during project construction.

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3.6 ENERGY
Environmental Issue Area
A. Where
Impact Was
Analyzed in
Prior
Environmental
Documents.

Would the project:
a. Result in a potentially
significant environmental
impact due to wasteful,
inefficient, or unnecessary
consumption of energy, or
wasteful use of energy
resources, during project
construction or operation?
2040 General
Plan EIR pp.

3.5-17 to3.5-
22 No No No N/A
b. Conflict with or obstruct a
state or local plan for
renewable energy or energy
efficiency?
2040 General
Plan EIR pp.

3.5-22 to 3.5-
23 No No No N/A

3.6.1 Existing Setting
The existing energy setting, including regulatory framework, has not substantially changed since the certification of the 2040 General Plan EIR.

The Specific Plan area currently uses energy in the form of electricity and natural gas from operations, lighting, heating, and cooling of existing buildings. Vehicle trips by employees and visitors visiting the Specific Plan area use gasoline, electricity, and diesel fuel.

3.6.2 Discussion
The 2040 General Plan EIR concluded that buildout of the 2040 General Plan would result in less than significant impacts to energy.
a. Implementation of the Specific Plan would utilize energy during construction and operational activities. The 2040 General Plan would allow a buildout of 5,580 residential units and 9,799,668 square feet of non-residential development within the Specific Plan area. Compared to the 2040 General Plan buildout, the Specific Plan would increase the residential buildout by 1 dwelling unit and non-residential buildout by 308,932 square feet, which includes retaining 242,900 square feet of existing industrial use and 25,314 square feet of service use. The additional net new retail, office/research and development, and residential development would be reallocated from the East of 101 area within the city, and therefore, would not increase the 2040 General Plan buildout for the city. However retaining the 268,215 square feet of existing industrial and service development within the Specific Plan area (that the General Plan assumed would be redeveloped with new uses) would Lindenville Specific Plan 70 Addendum
City of South San Francisco September 2023
increase the 2040 General Plan buildout by approximately 0.4 percent.18 Compared to what was assumed in the 2040 General Plan EIR, these changes would overall result in a net increase of approximately two residents and 252 employees within the Specific Plan area. Compared to the 2040 General Plan buildout for the City, which would result in a buildout population of 107,203 residents and 137,557 jobs in the City, the increase in population and jobs in the City due to what is now proposed by the Specific Plan would be considered nominal and not substantially increase the amount of energy that would be consumed at the 2040 General Plan buildout compared to what was disclosed in the 2040 General Plan EIR. The Specific Plan area is currently developed with industrial uses, and any new development would take place on developed parcels. The 2040 General Plan identified the Lindenville sub-area as one of the primary sub-areas to accommodate growth within the city due to its proximity to Caltrain, BART, with good access to jobs, neighborhood amenities, and services. One of the key 2040 General Plan policy goals is to create transit-oriented communities near Caltrain and BART and linking housing growth with job access. By allowing residential, commercial, and industrial development within the already developed Lindenville plan area, the concentration of population, employment, and services allows for more efficient use of energy.

Construction
Construction activities associated with future development under the Specific Plan would consume energy in the form of petroleum fuel for heavy equipment, as well as from worker trips and material delivery trips to the construction sites. Temporary electrical grid power may also be provided to construction sites. As described in Section 3.3 Air Quality, future development under the Specific Plan would be required to evaluate, measure, and mitigate air quality impacts generated from construction activities, such as implementing MM AIR-1a, which would also reduce energy consumption by limiting idling and ensuring equipment is properly maintained according to manufacturer’s specifications. Action CHEJ-3.2.2 of the 2040 General Plan also requires the City to manage truck idling in new residential neighborhoods in Lindenville. Chapter 15.60 of the Municipal Code requires development projects to complete and submit a construction recycling management plan. Section 15.60.020 of the Municipal Code requires the City to encourage contractors to make every structure planned for demolition available for deconstruction, salvage, and recovery prior to demolition; and to recover the maximum feasible amount of salvageable designated recyclable and reusable materials prior to demolition. CALGreen also requires projects to recycle and/or salvage for reuse a minimum 65 percent of the nonhazardous construction and demolition waste.

Future development under the Specific Plan would require subsequent environmental review and assess potential energy consumption impacts at a project-level and be subject to the Municipal Code and the General Plan policies and actions that directly and indirectly reduce energy consumption during construction. As such, construction activities associated with implementation of the Specific Plan would not result in wasteful, inefficient, or unnecessary consumption of energy, and result in the same less than significant impact as identified in the 2040 General Plan. 18 The 2040 General Plan allows for a buildout of 60,193,220 square feet of development. Source: City of South San Francisco. Draft Program Environmental Impact Report General Plan Update, Zoning Code Amendments, and Climate Action Plan City of South San Francisco, San Mateo County, California. SCH#2021020064. June 24, 2022.

Tables 2-5 and Table 2-7.

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Operation
Operation of development allowed under the Specific Plan would consume natural gas and electricity for building heating and power, lighting, water conveyance, and other operational requirements.

Indirect energy use would include the pumping, treatment, and conveyance of water for buildings, landscaping, and many other end uses. It is estimated that buildout of the Specific Plan would consume approximately 129,305,404 kilowatt-hour (kWh)of electricity per year and 4,021,281 therms of natural gas per year.19 As further discussed in Section 3.16 Transportation, the Specific Plan would reduce VMT per service population from 27.42 to 26.80, and therefore, improve energy efficiency for transportation related energy usage. Within Lindenville, the total daily VMT would increase from 314,022.1 to 1,076,477.1 compared to existing conditions,20 resulting in a net increase of 762,455. The increase in daily VMT would result in an increase in approximately 12,205,965 gallons of annual gasoline consumption.21
The Specific Plan is consistent with General Plan Policy LU-1.1, Action LU-1.1.2, Policy LU-1.2, and Policy LU-2.1 by allowing a mix of land uses placing housing, employment, services, and gathering places in proximity to each other, improving the bicycle and pedestrian network in the Specific Plan area (as described in Section 2.2 Project Description), and intensifying development near transit (BART and Caltrain).

General Plan Policy CP-2.1 requires the City to maintain membership in the Peninsula Clean Energy and continue to work to maintain a high level of private property owner participation in Peninsula Clean Energy. Policy CP-2.2 requires the City to partner with PG&E to develop options for reducing greenhouse gas emissions associated with the existing natural gas grid. General Plan Action CP-3.1.1 requires the City to provide incentives to encourage new construction to exceed Title 24 requirements. Policy LU-1.2 requires the City to improve opportunities to walk and bike, and accessibility in complete neighborhoods. Policy LU-2.1 requires the City to collaborate with developers and property owners to locate new housing, mixed use, and employment uses near transit centers to minimize reliance on personal automobiles. General Plan Action CHEJ-3.3.1 requires the City to explore opportunities for production, distribution, and warehousing uses in Lindenville to reduce pollution, such as greener trucks, energy efficient buildings, and other strategies.

Future development under the Specific Plan would also be subject to state and local energy efficiency regulations. The Municipal Code Chapters 15.22 and 15.26 contain the current Title 24, as amended.

Chapter 15.62 of the Municipal Code aims to encourage the use of solar energy systems. Municipal Code Section 20.300.009 requires outdoor lighting to minimize energy waste. Municipal Code Section 20.300.008 includes a number of requirements for new construction to aid in energy conservation by providing shade from the sun and shelter from the wind and encourage the conservation of water resources through the use of native and drought-tolerant plans and waterconserving irrigation practices. Municipal Code Section 15.26.020 requires new residential development to only include all-electric design features and prohibits the use of natural gas utilities. 19 Raimi + Associates. Greenhouse Gas Inventory and Forecast Memorandum. August 2023. 20 VMT data provided by Fehr & Peers Transportation Solutions. 21 The most recent national miles per gallon rate is 22.8 miles per gallon for light-duty vehicles. Source: Bureau of Transportation Statistics. “Average Fuel Efficiency of U.S. Light Duty Vehicles.” Accessed August 16, 2023. https://www.bts.gov/content/average-fuel-efficiency-us-light-duty-vehicles.

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Compliance with the General Plan policies and actions, Municipal Code, and state regulations by future development allowed under the Specific Plan would ensure that implementation of the Specific Plan would not result in wasteful, inefficient, or unnecessary consumption of energy. Future development would also be subject to the City’s TDM ordinance, which in turn, would further reduce gasoline consumption.

For these reasons, future development under the Specific Plan would be designed and built to minimize energy consumption and would ensure that building energy consumption would not be wasteful, inefficient, or unnecessary. In addition, implementation of the Specific Plan would minimize gasoline use for transportation and not result in wasteful, inefficient, or unnecessary gasoline consumption. Specific Plan would result in the same less than significant energy impact as identified in the 2040 General Plan EIR.
b. As discussed under checklist question a, the Specific Plan is consistent with the 2040 General Plan policies by allowing and intensifying a mix of land uses, placing housing, employment, services, and gathering places in proximity to each other, improving the bicycle and pedestrian network in the Specific Plan area, in a transit-oriented area, and future development would be subject to state and local building regulations for energy efficiency. Furthermore, as discussed in Section 3.3 Air Quality, the Specific Plan is consistent with the 2017 CAP control measures, which would help meet BAAQMD’s primary goal of attaining air quality standards, which in turn, would improve energy efficiency within the Specific Plan area. The Specific Plan does not propose any features that would obstruct, or be in conflict with any state or local plans for renewable energy or energy efficiency. For these reasons, the Specific Plan would result in the same less than significant energy impact as identified in the 2040 General Plan EIR.

3.6.3 Conclusion
The proposed project would not result in a new significant energy impact or a substantial increase in the severity of the energy impacts disclosed in the 2040 General Plan EIR.

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3.7 GEOLOGY, SOILS, AND MINERALS
Environmental Issue Area
A. Where
Impact Was
Analyzed in
Prior
Environmental
Documents.

Would the project:
a. Directly or indirectly cause
potential substantial adverse
effects, including the risk of
loss, injury, or death
involving:
i. Rupture of a known
earthquake fault, as
delineated on the most
recent Alquist-Priolo
Earthquake Fault Zoning
Map issued by the State
Geologist for the area or
based on other substantial
evidence of a known
fault? Refer to Division
of Mines and Geology
Special Publication 42.
ii. Strong seismic ground
shaking?
iii. Seismic-related ground
failure, including
liquefaction?
iv. Landslides?
2040 General
Plan EIR pp.

3.6-17 to 3.6-
23 No No No N/A
b. Result in substantial soil
erosion or the loss of topsoil?
2040 General
Plan EIR pp.

3.6-23 to 3.6-
24 No No No N/A
c. Be located on a geologic unit
or soil that is unstable, or that
would become unstable as a
result of the project, and
potentially result in on-or offsite landslide, lateral spreading, subsidence,
liquefaction or collapse?
2040 General
Plan EIR pp.

3.6-24 to 3.6-
26 No No No N/A
d. Be located on expansive soil,
as defined in the current
California Building Code,
creating substantial risks to
life or property?
2040 General
Plan EIR pp.

3.6-26 to 3.6-
27 No No No N/A
Lindenville Specific Plan 74 Addendum
City of South San Francisco September 2023
Environmental Issue Area
A. Where
Impact Was
Analyzed in
Prior
Environmental
Documents.

Would the project:
e. Have soils incapable of
adequately supporting the use
of septic tanks or alternative
waste water disposal systems
where sewers are not
available for the disposal of
waste water?
2040 General
Plan EIR pp.

3.6-27 to 3.6-
28 No No No N/A
f. Directly or indirectly destroy
a unique paleontological
resource or site or unique
geological feature?
2040 General
Plan EIR pp.

3.6-28 to 3.6-
29 No No No MM GEO-6
g. Result in the loss of
availability of a known
mineral resource that would
be of value to the region and
the residents of the state?
2040 General
Plan EIR pp.
6-2
No No No N/A
h. Result in the loss of
availability of a locally
important mineral resource
recovery site delineated on a
local General Plan, specific
plan or other land use plan?
2040 General
Plan EIR pp.
6-2
No No No N/A

3.7.1 Existing Setting
The existing geology, soils, and mineral resources setting, including regulatory framework, has not substantially changed since the certification of the 2040 General Plan EIR.

The Specific Plan area is within a seismically active region and is located within a liquefaction hazard zone.22 Lateral spreading, due to liquefaction, could also occur along Colma Creek and the Navigable Slough.23 The Specific Plan area is flat and is not subject to landslide hazards.

As disclosed in the 2040 General Plan EIR, the Specific Plan area is underlain by primarily Urbanland and Urbanland-Orthents soils.24 Urban Land consists of areas covered by roads, driveways, parking lots, houses, and other structures. The soils under these structures have been 22 City of South San Francisco. Draft Program Environmental Impact Report General Plan Update, Zoning Code Amendments, and Climate Action Plan City of South San Francisco, San Mateo County, California.

SCH#2021020064. June 24, 2022. Exhibit 3.6-4, Exhibit 3.6-5. 23 Ibid. Page 3.6-5.
24 United States Department of Agriculture, Natural Resources Conservation Service. “Web Soil Survey”. Accessed:

February 4, 2021. https://websoilsurvey.sc.egov.usda.gov/App/WebSoilSurvey.aspx Lindenville Specific Plan 75 Addendum
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graded and mixed or have been covered with fill material. Urban Land-Orthents is a combination of Urban Land and smoothed, well-draining soils with sandy loam. According to the 2040 General Plan EIR, soils in the eastern portion of the City (including the Specific Plan area) are susceptible to damage from expansive soils and differential settlement due to the artificial fill overlaying tidal flats, alluvium, and slope debris.25
There are no known paleontological or mineral resources within the City of South San Francisco.

3.7.2 Discussion
The 2040 General Plan EIR concluded that buildout of the General Plan would result in less than significant impacts to geology, soils, paleontology, and mineral resources. a. As disclosed in the 2040 General Plan EIR, the Specific Plan area is located within a seismically active region and, as such, strong to very strong ground shaking would be expected during the lifetime of the Specific Plan. The Specific Plan area is not located within an Alquist-Priolo special study zone. While no active faults are known to cross the Specific Plan area and fault rupture is not anticipated to occur, ground shaking could damage structures and threaten future occupants of the Specific Plan area. In addition, the Specific Plan area is located in a liquefaction hazard area, which is consistent with the conclusions in the 2040 General Plan EIR.

While the Specific Plan would allow more growth than what was identified in the 2040 General Plan (see Table 2.2-1 in Section 2.2 Project Description), similar to what was identified in the 2040 General Plan EIR, future development under the Specific Plan would be designed and constructed in accordance with Chapter 15.08 of the City’s Municipal Code, which implements the California Building Code (CBC) requirements that foundations and other structural support features would be designed to resist or absorb damaging forces from strong ground shaking, liquefaction, lateral spreading, and subsidence. In addition, given that the Specific Plan area is located within a liquefaction hazard area, future projects would be required to comply with Section 20.170.004 of the City’s Municipal Code, which requires site-specific soils and geologic reports be prepared prior for review and approval by the City Engineer prior to development, and incorporation of the recommended actions during construction. Compliance with the City’s Municipal Code would reduce seismic and seismic-related impacts to a less than significant level.

Future development under the Specific Plan would not be subject to substantial slope instability or landslide related hazards due to the relatively flat topography of the area. The impacts of landslides on future development within the Specific Plan area would, therefore, be less than significant. This is the same impact as disclosed in the 2040 General Plan EIR. b. Topography of the Specific Plan area is relatively flat; therefore, the area would not be exposed to substantial erosion. Future development projects under the Specific Plan would be required to comply with the City’s Municipal Code to ensure that erosion would not occur during construction and operation, as described in detail in Section 3.9 Hydrology and Water Quality. This is the same impact as disclosed in the 2040 General Plan EIR.
25 City of South San Francisco. Draft Program Environmental Impact Report General Plan Update, Zoning Code Amendments, and Climate Action Plan City of South San Francisco, San Mateo County, California.

SCH#2021020064. June 24, 2022. Page 3.6-6.

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c, d. Given the proximity (within 10-miles) of seismically active faults to the Specific Plan area, seismic ground shaking could result in liquefaction, lateral spreading, or differential settlement. As discussed above, soils with a high expansion potential occur in the Specific Plan Area, which can cause heaving and cracking of slabs on-grade, pavements, and structures founded on shallow foundations. In addition, lateral spreading may occur along the Colma Creek corridor in the northern portions of the Specific Plan area. Compliance with the City’s Municipal Code requiring preparation of site-specific soils and geology reports and implementing the recommendations in the reports would reduce the impacts of seismic and seismic-related hazards and expansive soils to a less than significant level. This is the same impact as disclosed in the 2040 General Plan EIR. e. Future development under the Specific Plan would connect to existing City sewer lines and would not require treatment of wastewater on-site using a septic system or alternative wastewater disposal system. Therefore, the Specific Plan would have no impact on the ability of on-site soils to support alternative wastewater systems. This is the same impact as disclosed in the 2040 General Plan EIR. f. As discussed above, there are no known paleontological resources within the City and, per the 2040 General Plan EIR, the areas within the City that have the highest potential for previously undiscovered paleontological resources are located within the Merced Formation and Colma Formation, both of which are located west of the Specific Plan area. The Specific Plan area is mostly underlain by Urbanland and Urbanland-Orthents, which contain fill materials and are of younger geologic age. Thus, there is low sensitivity for paleontological resources within the Specific Plan area. Nonetheless, in the event that any earth-disturbing construction activities uncover paleontological resources (e.g., bones, teeth, well-preserved plant elements), potential impacts to paleontological resources would be minimized to a less than significant level through compliance with Public Resources Code Section 5097, which specifies procedures to be followed in the event of unexpected discovery of paleontological resources.26
Future development under the Specific Plan, with compliance of Public Resources Code Section 5097, would have a less than significant impact on paleontological resources. This is the same impact as disclosed in the 2040 General Plan EIR.
g, h. As stated in the 2040 General Plan EIR, no minerals or aggregate resources of statewide importance are located within the City of South San Francisco. Thus, there would be no impact.

3.7.3 Conclusion
The proposed project would not result in a new significant geology and soils impact or substantially increased impacts than were disclosed in the 2040 General Plan EIR. 26 City of South San Francisco. Draft Program Environmental Impact Report General Plan Update, Zoning Code Amendments, and Climate Action Plan City of South San Francisco, San Mateo County, California.

SCH#2021020064. June 24, 2022. Page 3.6-28.

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3.8 GREENHOUSE GAS EMISSIONS
Environmental Issue Area
A. Where
Impact Was
Analyzed in
Prior
Environmental
Documents.

Would the project:
a. Generate greenhouse gas
(GHG) emissions, either
directly or indirectly, that may
have a significant impact on
the environment?
2040 General
Plan EIR pp.

3.7-53 to 3.7-
66 No No No N/A
b. Conflict with an applicable
plan, policy or regulation
adopted for the purpose of
reducing GHG emissions?
2040 General
Plan EIR pp.

3.7-66 to 3.7-
83 No No No N/A

3.8.1 Existing Setting
The existing setting for climate change and greenhouse gas emissions has not substantially changed since the certification of the 2040 General Plan EIR.

The Specific Plan area is currently developed primarily with industrial uses. The existing development within the Specific Plan area generates GHG emissions primarily from vehicle trips by employees and visitors, as well as for heating and cooling of buildings, conveyance of water, treatment of wastewater, and from the transport and disposal of solid waste.

Note since the City adopted the 2040 General Plan EIR on October 12, 2022, BAAQMD adopted its 2022 CEQA Air Quality Guidelines on April 20, 2023, which includes updated thresholds for evaluating GHG emissions impacts. However, an updated threshold is not considered a change in circumstances under which a project would occur, for purposes of CEQA Guidelines Section 15162, which is a change in the real world that would materially change the impacts a project would have.

As described above, there has not been substantial changes to the GHG emissions setting, therefore, the following analysis relies on the same GHG thresholds used in the 2040 General Plan EIR, which is an interpolated threshold from the California Air Resources Board (CARB) 2017 Climate Change Scoping Plan, as further discussed below. It should also be noted that the City as lead agency has the discretion to apply what is considers the appropriate threshold for a given environmental topic, and therefore continues to have the discretion to continue to rely on the interpolated threshold from the 2017 Climate Change Scoping Plan.

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3.8.2 Discussion
The 2040 General Plan EIR concluded that buildout of the 2040 General Plan would result in less than significant GHG impacts.

Interpolating from the CARB 2017 Climate Change Scoping Plan’s plan-level GHG emissions efficiency targets, the 2040 General Plan EIR utilized a GHG significance threshold based on whether the 2040 General Plan buildout would result in greater than 4.0 metric tons of carbon dioxide equivalent (MT CO2e) per service population (residents plus employees) by 204027. CEQA Guidelines Section 15183.5(b) allows projects and plans to be analyzed through a streamlined or tiered approach utilizing an adopted GHG Reduction Plan. The City’s 2022 Climate Action Plan (2022 CAP) is a qualified greenhouse gas reduction strategy. Projects that demonstrate consistency with the 2022 CAP, including future redevelopment projects under the Specific Plan, would be eligible for streamlined CEQA review pursuant to CEQA Guidelines Section 15183.5. a. The Specific Plan would allow future development within the Specific Plan area that slightly exceeds planned growth from the 2040 General Plan, which would allow a buildout of 5,580 residential units and 9,799,668 square feet of non-residential development within the Specific Plan area. Compared to the 2040 General Plan buildout, the proposed Specific Plan would increase the residential buildout by 1 dwelling unit and non-residential buildout by 308,932 square feet.

Construction activities associated with future development would generate temporary short-term GHG emissions. Neither the CARB’s 2017 Scoping Plan nor the current BAAQMD guidelines recommend quantitative thresholds of significance for GHG emissions resulting from construction activities at the plan level. Rather, the City would consider construction emissions to be potentially significant if a project would not incorporate construction BMPs to reduce GHG emissions during construction. As discussed in Section 3.2, Air Quality, new development within the City, including the Specific Plan area, would be subject to construction BMPs for reducing construction emissions through MM AIR-1a by limiting idling and requiring equipment to be properly maintained and tuned.

With implementation of MM AIR-1a, GHG emissions from construction activities of future development under the Specific Plan would be reduced to a less than significant level. In addition, Chapter 15.60 of the Municipal Code requires development projects to complete a recycling management plan, and Section 15.60.020 requires the City to encourage contractors to make every structure planned for demolition available for deconstruction, salvage, and recovery prior to demolition; and to recover the maximum feasible amount of salvageable designated recyclable and reusable materials prior to demolition, but at least at the rate set forth in CALGreen.

Once built and occupied, future development within the Specific Plan area would result in long-term operational sources of GHG emissions associated with mobile sources (e.g., vehicle exhaust) from vehicle trips by employees, visitors, and residents, energy consumption (e.g., electricity and natural gas) of buildings, solid waste, wastewater treatment, and water consumption (e.g., electricity used to deliver and treat water consumed by customers in the City). The operational GHG emissions from buildout of the Specific Plan have been calculated (see Appendix B). The GHG emissions accounted for emission reductions resulting from the following state-level and City-level policies:
27 Note that the metric from the 2017 Climate Change Scoping Plan is expressed in per capita (residents) because it accounts for the total forecasted population and emissions of the state, while the City’s significance threshold metric is expressed in per service population (residents plus employees) because the GHG emissions of the city would be the result of residents and employees who work in the City but may not live in the City.

Lindenville Specific Plan 79 Addendum
City of South San Francisco September 2023
• Renewable Portfolio Standard (RPS), a law which requires electrical utilities to provide an increased amount of electricity from eligible renewable sources. SB 100 requires that 33 percent of electricity sold by utilities in 2020 be renewable, 60 percent be renewable in 2030, and 100 percent be carbon-free in 2045.
• Title 24: Title 24 is the set of regulations that specifies how new buildings must be constructed, including specifying minimum energy efficiency standards. These standards are updated triennially to be more stringent. California has set a goal for zero-net energy new construction by 2030.
• Pavely Clean Car Standards: These standards require that vehicles sold in California meet minimum fuel efficiency requirements, and that fuel sold in the state emits less GHGs during production and use.
• Municipal Code Chapter 15.26: All-electric residential new construction • 2040 General Plan: Mobility improvements
• 2022 Climate Action Plan
It is estimated that the Specific Plan would result in annual GHG emissions of 78,808 MT CO2e with implementation of the above policies, which would result in an efficiency emission of 2.24 MT CO2e per service population. The GHG emissions per service population for the Specific Plan, therefore, would not exceed the 2040 General Plan EIR’s GHG efficiency threshold of 4.0 MT CO2e per service population.

The Specific Plan and future development allowed under the Specific Plan would be subject to the City’s 2022 CAP, a qualified GHG reduction plan. As summarized in Table 3.8-1 below, the Specific Plan and future development allowed would comply with the applicable 2022 CAP measures.

Because the Specific Plan would not exceed the efficiency threshold of 4.0 MT CO2e per service population, and be consistent with the City’s 2022 CAP, it would result in the same less than significant GHG impact as identified in the 2040 General Plan EIR.

Table 3.8-1: Project Consistency with Applicable Climate Action Plan Actions Action Description Consistency
CE 1.1 Require the construction of any new
nonresidential conditioned space of 5,000
square feet or more, or the conversion of
unconditioned space 5,000 square feet or more,
to meet a minimum of 50 percent of modeled
building electricity needs with on-site renewable
energy sources, as is feasible. To calculate 50
percent of building electricity needs for the new
conditioned space, the applicant shall calculate
building electricity use as part of the Title 24
compliance process. Total electricity use shall
include total use for the new conditioned space
excluding process energy.

Future non-residential development
under the Specific Plan would be
required to comply with CE 1.1 by
providing on-site renewable energy
sources for 50 percent of the modeled
building electricity needs.

BNC 1.1 Provide a combination of financial and
development process incentives (e.g., Expedited
permitting, FAR increases, etc.) to encourage
new development to exceed Title 24 energy
efficiency standard.

Specific Plan Chapter 3.5 Height
allows a maximum building height of
160 feet or the ALUCP maximum
height, whichever is less, for
developments in the Height Incentive
Overlay by requiring a score of at least
Lindenville Specific Plan 80 Addendum
City of South San Francisco September 2023
Table 3.8-1: Project Consistency with Applicable Climate Action Plan Actions Action Description Consistency
120 points on the Green Point Rated
system and a whole building life cycle
assessment per the Leadership in
Energy and Environmental Design
(LEED) requirement. Future
development under the Specific Plan
would be subject to the Municipal
Code Chapter 15.26 California Energy
Code, which adopts the state’s current
Title 24 building requirements, as
amended.

BNC 2.1 Implement residential all-electric reach code
and adopt all-electric reach code for
nonresidential new construction. Exempt
occupancies must install electric building
systems (e.g., space and water heating
equipment) where feasible. Until the adoption of
the nonresidential all-electric reach code,
require any new nonresidential conditioned
space of 5,000 square feet or more, or the
conversion of unconditioned space 5,000 square
feet or more to comply with CALGreen Tier 2
energy efficiency requirements to exceed
mandatory energy efficiency requirements by 20
percent or more. For additions to existing
development of 5,000 square feet or more,
CALGreen Tier 2 shall be calculated as part of
the Title 24 compliance process. Existing
building space already permitted shall not be
subject to CALGreen Tier 2 requirements.

Future residential development under
the Specific Plan would be subject to
the City’s residential all-electric reach
code, and future non-residential
development would be required to
meet CALGreen Tier 2 energy
efficiency requirements or City’s nonresidential all-electric reach code when adopted. In addition, Specific Plan
Policy 5.2 prohibits new natural gas
services in buildings and transition
infrastructure to be all electric.

BE 1.2 Update zoning and building codes to require
alternations or additions at least 50 percent the
size of the original building to comply with
minimum CALGreen requirements.

Future alterations to existing buildings
within the Specific Plan would be
subject to the zoning and building code
in effect at the time the project is
proposed.

BE 1.6 Adopt energy and water benchmarking
ordinance for commercial buildings over
10,000 square feet to empower owners to
control utility costs.

Future commercial development would
be subject to the City’s water
benchmarking ordinance once adopted
to track and report annual water
consumption.

Action BE

2.1 Develop a date certain, phased-in Existing
Building Electrification Plan to retrofit 90
percent of existing homes and businesses to all
electric by 2040.

Existing development within the
Specific Plan area would be subject to
Action BE 2.1 to retrofit 90 percent of
existing business to all electric by
2040. In addition, Specific Plan Policy

5.2 requires existing infrastructure to
transition infrastructure to all electric.

BE 2.4 Adopt an all-electric reach code for major
renovations, alterations, additions.

Future development involving major
renovations, alternations, or additions
to existing buildings within the
Specific Plan area would be subject to
Lindenville Specific Plan 81 Addendum
City of South San Francisco September 2023
Table 3.8-1: Project Consistency with Applicable Climate Action Plan Actions Action Description Consistency
the all-electric reach code adopted at
the time the project is proposed. In
addition, Specific Plan Policy 5.2
requires existing infrastructure to
transition infrastructure to all electric.

TL 1.1 Implement EV reach code Future development under the Specific Plan would be subject to the City’s EV
reach code.

TL 2.2 Implement, monitor, and enforce compliance
with the City’s TDM Ordinance.

Future development under the Specific
Plan would be subject to the City’s
TDM ordinance and its compliance
requirements.

TL 2.3 Evaluate the current and best use of curb space
in the City’s activity centers and repurpose
space to maximize people served (i.e., for
loading, bikeways, bike parking, bus lanes, EV
charging, or parklets).

Chapter 6 Mobility of the Specific
Plan proposes a grid of pedestrian
priority streets within the Specific Plan
area by incorporating wider sidewalks,
landscaping, parklets, curb extensions,
and other traffic calming features to
create walkable environments in
support of active ground floor land
uses. The Specific Plan also proposes a
grid of bicycle priority streets
incorporating low-stress bicycle
facilities that accommodate people of
all ages and abilities to facilitate crosstown travel and local access.

TL 2.4 Incorporate maximum parking requirements for
new residential and office/R&D projects.

Future development under the Specific
Plan would be subject to Municipal
Code Chapter 20.330 On-Site Parking
and Loading parking requirements,
which avoids the over-supply of
parking and promoting travel via
walking, bicycling, transit, and
carpooling
TL 2.5 For all new land use and transportation projects, adhere to the City’s VMT Analysis Guidelines
and qualitatively assess the project’s effect on
multimodal access. Use the development review
process to identify opportunities to enhance
bicycle, pedestrian, and transit connectivity.

As further discussed in Section 3.16
Transportation, future development,
including transportation projects,
under the Specific Plan would be
subject to subsequent environmental
review, which would evaluate projectlevel impacts on VMT and the multimodal system, and identify any
multimodal improvements needed.

TL 2.6 Ensure that all roadway and development
projects are designed and evaluated to meet the
needs of all street users, and that development
projects contribute to multimodal improvements
in proportion to their potential impacts on
vehicle miles traveled. Develop a Capital
Improvement Program (CIP) prioritization
criteria, including equity considerations for SB
Chapter 6.3 Complete Streets
Guidance of the Specific Plan contains
guidance for developing complete
streets within the Specific Plan area.

Future development under the Specific
Plan would be subject to subsequent
environmental review to evaluate its
VMT impact and demand to the
Lindenville Specific Plan 82 Addendum
City of South San Francisco September 2023
Table 3.8-1: Project Consistency with Applicable Climate Action Plan Actions Action Description Consistency
1000 neighborhoods, to strategically advance
multimodal Complete Streets projects. All
capital improvements and development projects
incorporate bicycle and pedestrian
improvements identified in the Active South
City Plan, such as trails, bikeways, bicycle
detection at traffic signals, high-visibility
crosswalks, and pedestrian-oriented site plans.
multimodal system and require fairshare contribution to multimodal street improvements.

TL 2.8 Leverage public-private partnerships to increase transit ridership and improve transit station
access by incorporating first/last mile bus,
shuttle, and active transportation connections
between employment hubs and regional transit
stations.

Chapter 6.2 Mobility Network of the
Specific Plan establishes transit
priority streets within the Specific Plan
area. These streets incorporate bus and
shuttle service and high-quality
shelters. The Specific Plan identifies
first/last mile shuttles along Southline
Avenue, South Linden Avenue, and
Airport Boulevard connecting the
Southline and Terminal Court
employment centers with Caltrain and
BART.

SW 1.1 Adopt an SB 1383 compliant zero-waste plan
for municipal operations and the community
that includes: mandatory residential and
commercial recycling and collection of
organics/food waste, mandatory commercial
edible food recovery program (per MOU with
San Mateo County Office of Sustainability), and
updated trash enclosure space and access
requirements based on hauler recommendations
to accommodate all waste streams (e.g.,
recycling, trash, and organics).

Future development under the Specific
Plan would be subject to the City’s
waste-reduction regulations in place,
such as an adopted zero-waste plan,
and design trash enclosure space and
access requirements per City
standards.

WW 1.1 Achieve greater water use reductions than
WELO by requiring all landscapes obtain a
landscape permit, decreasing the size threshold
to capture all landscape renovations, adding
prescriptive irrigation plant lists, or water
budget requirements.

Future development under the Specific
Plan would require a landscape permit
and comply with the water reduction
requirements of the permit.

WW 1.4 Develop a plant list, landscaping palette for
efficiency and habitat/wildlife for new
development and landscape retrofits.

Policy OS-3.2 of the Specific Plan
requires planting of a native and
biodiverse landscape in parks, open
spaces, and the public right-of-way
within the Specific Plan area. Chapter

5.5.2 Stormwater Management of the
Specific Plan area requires stormwater
treatment areas to include native tree
and plant species. Chapter 5.5.4 Urban
Forest of the Specific Plan proposes to
increase tree canopy within the
Specific Plan area by achieving a 22
percent canopy coverage. New
plantings would be locally adapted,
Lindenville Specific Plan 83 Addendum
City of South San Francisco September 2023
Table 3.8-1: Project Consistency with Applicable Climate Action Plan Actions Action Description Consistency
site-appropriate, or native species.

Chapter 5.7.5 Planting and Vegetation
of the Specific Plan includes standards
and guidelines to create ecologically
beneficial and resilient landscapes.

WW 2.1 Require high-efficiency fixtures in all new
construction and major renovations, comparable
to CALGreen Tier 1 or 2 standards.

Future development under the Specific
Plan would be required to include
high-efficiency fixtures comparable to
CALGreen Tier 1 or 2 standards.

CS 2.1 Expand the canopy cover to reach the goals of
the Urban Forest Master Plan and increase
environmental benefits, prioritizing
disadvantaged communities and connected
wildlife corridors.

Chapter 5.5.4 Urban Forest of the
Specific Plan proposes to increase tree
canopy within the Specific Plan area
by achieving a 22 percent canopy
coverage, consistent with the Urban
Forest Master Plan.

CS 2.2 For nonresidential and residential new
construction, require silva cell structures and
soil compaction plan for tree growth, and
require the preservation and addition of trees on
private property in residential neighborhoods
through design review where appropriate.

Incorporate Parks and Recreation urban forest
staff in the review process.

Chapter 5.5.2 Stormwater
Management and Chapter 5.5.4 Urban
Forest of the Specific Plan requires
installation of silva cell, or a
comparable soil cell system, to allow
water retention and adequate tree
growth.

CS 3.1 Enhance Colma Creek as an ecological corridor,
restoring 5 miles of creek ecologies and creating
transitional habitat zones to build resilience and
ecosystem services. Protect and expand existing
marsh and wetland habitat to improve water
quality, adapt to climate change, and provide
habitat for wildlife.

The Specific Plan proposes a greenbelt
with blue-green infrastructure along
Colma Creek and would increase the
building setbacks along Colma Creek
to enhance Colma Creek as an
ecological corridor.

CL 1.7 Adopt municipal TDM policy or participate in
City ordinance that encourages alternatives to
SOVs and established telecommute policy to
allow remote work when feasible.

Future development under the Specific
Plan would be subject to the City’s
TDM ordinance.
b. The CARB’s 2017 Climate Change Scoping Plan, the MTC/ABAG Plan Bay Area 2050, and the BAAQMD 2017 Clean Air Plan are statewide and regional plans adopted for the purpose of reducing GHG emissions. As discussed under checklist question a, the project would not exceed the efficiency threshold of 4.0 MT CO2e per service population, which is interpolated from the 2017 Climate Change Scoping Plan’s plan-level GHG emissions efficiency target. Therefore, the Specific Plan is consistent with the 2017 Climate Change Scoping Plan.

Plan Bay Area 2050 establishes a course for reducing per capita GHG emissions through the promotion of compact, high-density, mixed-use neighborhoods near transit, particularly within identified Priority Development Areas. While the Specific Plan area is currently not mapped as a PDA,28 it would be added to the City’s Downtown PDA if the City adopts the Specific Plan.29 28 Association of Bay Area Governments. "Priority Development Area Program Overview.” Access August 18, 2023. https://abag.ca.gov/technical-assistance/priority-development-area-program-overview. 29 Gross, Billy. Principal Planner, City of South San Francisco. Personal Communication. August 25, 2023.

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City of South San Francisco September 2023
Furthermore, the South San Francisco Caltrain station is approximately a quarter mile north of the Specific Plan area, and the San Bruno BART station is adjacent to the southern boundary of the Specific Plan area. The Specific Plan area is serviced by San Mateo County Transit District (SamTrans) Route 141, which stops at the San Bruno BART station and through the western part of the Specific Plan on Spruce Avenue , and Route 292, which stops at the northeastern corner of the Specific Plan area and SFO to the south and adjacent to the South San Francisco Caltrain Station to the north. Furthermore, the Specific Plan area would have first/last mile shuttles along Southline Avenue, South Linden Avenue, and Airport Boulevard connecting the Southline and Terminal Court employment centers with Caltrain and BART. Therefore, the Specific Plan is consistent with the goals of Plan Bay Area 2050.

The BAAQMD 2017 CAP focuses on two goals: protecting public health and protecting the climate.

The 2017 CAP includes air quality standards and control measures designed to reduce emissions of GHGs. As discussed in Section 3.3 Air Quality, the Specific Plan would be consistent with the 2017 Clean Air Plan control measures as summarized in Table 3.3-1. In addition, the Specific Plan and future development would be required to comply with the applicable policies and requirements included within the 2040 General Plan, the 2022 Climate Action Plan, and the Municipal Code aimed at reducing GHG emissions. For these reasons, the Specific Plan would result in the same less than significant impact as identified in the 2040 General Plan EIR.

3.8.3 Conclusion
The proposed project would not result in a new significant GHG impact or a substantial increase in the severity of the GHG impacts disclosed in the 2040 General Plan EIR.

Lindenville Specific Plan 85 Addendum
City of South San Francisco September 2023

3.9 HAZARDS AND HAZARDOUS MATERIALS
Environmental Issue Area
A. Where
Impact Was
Analyzed in
Prior
Environmental
Documents.

Would the project:
a. Create a significant hazard to
the public or the environment
through the routine transport,
use, or disposal of hazardous
materials?
2040 General
Plan EIR pp.

3.8-24 to 3.8-
26 No No No N/A
b. Create a significant hazard to
the public or the environment
through reasonably
foreseeable upset and accident
conditions involving the
release of hazardous materials
into the environment?
2040 General
Plan EIR pp.

3.8-26 to 3.8-
28 No No No N/A
c. Emit hazardous emissions or
handle hazardous or acutely
hazardous materials,
substances, or waste within
one-quarter mile of an existing
or proposed school?
2040 General
Plan EIR pp.

3.8-28 to 3.8-
29 No No No N/A
d. Be located on a site which is
included on a list of hazardous
materials sites compiled
pursuant to Government Code
Section 65962.5 and, as a
result, would it create a
significant hazard to the
public or the environment?
2040 General
Plan EIR pp.

3.8-29 to 3.8-
30 No No No N/A
e. For a project located within an
airport land use plan or, where
such a plan has not been
adopted, within two miles of a
public airport or public use
airport, would the project
result in a safety hazard for
people residing or working in
the project area?
2040 General
Plan EIR pp.

3.8-30 to 3.8-
32 No No No N/A
f. Impair implementation of or
physically interfere with an
adopted emergency response
plan or emergency evacuation
plan?
2040 General
Plan EIR pp.

3.8-32 to 3.8-
34 No No No N/A
Lindenville Specific Plan 86 Addendum
City of South San Francisco September 2023
Environmental Issue Area
A. Where
Impact Was
Analyzed in
Prior
Environmental
Documents.

Would the project:
g. Expose people or structures to
a significant risk of loss,
injury or death involving
wildland fires?
2040 General
Plan EIR pp.

3.16-11 to

3.16-15
No No No N/A

3.9.1 Existing Setting
The existing hazardous materials setting, including regulatory framework, has not substantially changed since the certification of the 2040 General Plan EIR.

According to the 2040 General Plan EIR, the Specific Plan area has a history of industrial uses dating back to the 1920s and 1930s that generated hazardous materials.30 Many of these industrial buildings are still standing and may also contain asbestos-containing materials (ACM), lead based paint (LBP), and polychlorinated biphenyls (PCBs). The 2040 General Plan EIR reviewed federal, state, and local databases for hazardous materials sites within the city, including the Specific Plan area. There are no Environmental Protection Agency (EPA) Superfund sites within the Specific Plan area; however, there are two former state response cleanup sites, four voluntary cleanup sites, and multiple leaking underground storage tank (LUST) cases.

The two state response cleanup sites (Reichhold Chemicals and Sun Chemical) are closed and certified with no land use restrictions. Of the four voluntary cleanup sites, two are certified and have land use restrictions (Basapco, Inc. and Upper Linden Union Pacific Railroad) and two are still active cleanup cases (Morena Trust and Union Pacific). The Morena Trust site, located at 437 South Canal Street, has been an open case since 2012 with the primary contaminant of concern as Trichloroethylene (TCE) and tetrachloroethylene (PCE).
31 The Department of Toxic Substances
Control (DTSC) is currently overseeing implementation of a sub-slab depressurization system and indoor air monitoring. The Union Pacific site, located at 69 South Linden Avenue, has been an open case since 2012 with the primary contaminant of concern as chlorinated volatile organic compounds (VOCs) and metals (i.e., arsenic and lead).32 A Remedial Design Implementation Plan (RDIP) was prepared and submitted to DTSC in January 2022 to describe the design of the soil cap and the in-situ bioremediation system and is currently under review.33
30 City of South San Francisco. Draft Program Environmental Impact Report General Plan Update, Zoning Code Amendments, and Climate Action Plan City of South San Francisco, San Mateo County, California.

SCH#2021020064. June 24, 2022. Page 3.8-4.
31 Ibid. Page 3.8-8 to 3.8-9.
32 Ibid. Page 3.8-8.
33 Department of Toxic Substances and Control. “EnviroStor”. Accessed June 28, 2023. https://www.envirostor.dtsc.ca.gov/public/profile_report?global_id=60001636.

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City of South San Francisco September 2023
The LUST cases within the Specific Plan area are spread throughout the area, but are mainly concentrated east of South Spruce Avenue and south of Colma Creek.

The Specific Plan area is located within two miles of SFO and is located within the airport influence area (AIA) of the SFO ALUCP. In addition, the entire Specific Plan area is located within the Federal Aviation Administration (FAA) Part 77 Surfaces area and the southern portions of the Specific Plan area are located within the Safety Compatibility Zones Zone 2 and Zone 3 (south of Shaw Road), and Zone 4 (southern tip of adjacent to Tanforan Avenue) of the SFO ALUCP.

The Specific Plan area is not located within a designated fire hazard zone. 34

3.9.2 Discussion
The 2040 General Plan EIR concluded that buildout of the General Plan would result in less than significant impacts with regard to hazards and hazardous materials. a. The proposed Specific Plan calls for a reduction in services and industrial uses compared to existing conditions, however, plans for an increase in office/research and development uses compared to existing conditions and what was planned in the 2040 General Plan (refer to Table

2.2-1). Future development under the Specific Plan could involve the routine use, transportation, and disposal of hazardous materials, mainly in the MIH, MI, and B&PO land use designations. These land use designations are in the southeastern half of the Specific Plan area where there are existing industrial uses with pre-existing routine transport of hazardous materials. In addition, during construction activities of any redevelopment within the Specific Plan area, limited amounts of hazardous materials (i.e., fuels, solvents, paints) would be used and transported to development sites.

Per the City’s Municipal Code Section 20.300.010, future development under the Specific Plan would be required to comply with the provisions of the California Hazardous Materials Regulations and the California Fire and Building Code as well as the laws and regulations of the DTSC and the County Environmental Health Agency regarding the use, handling, storage, and transportation of hazardous and extremely hazardous materials. The City would also implement General Plan Policy CHEJ-4.4, which requires the City to maintain an up-to-date truck routes map that minimizes exposures to sensitive land uses from vehicles carrying hazardous materials and toxic waste, Policy CR-7.2, which requires the City to cooperate with federal, State, and County agencies to effectively regulate the management of hazardous materials and hazardous waste, Policy CR-7.3, which requires the City to assess the use of hazardous materials as part of a development’s environmental review, and Policy CHEJ-4.5, which prohibits new nonresidential uses that are known to release or emit toxic waste at levels that are harmful to human health.35 For these reasons, future development under the 34 California Department of Forestry and Fire Protection (CAL FIRE). “Fire Hazard Severity Zone Viewer”.

Accessed June 28, 2023. http://egis.fire.ca.gov/FHSZ/.
35 Policy CHEJ-4.4: Maintain map of hazardous materials transport route. Maintain an up-to-date truck routes map that minimizes exposures to sensitive land uses from vehicles carrying hazardous materials and toxic waste. Policy CR-7.2: Coordinate hazardous material regulation and management. Continue to cooperate with federal, State, and County agencies to effectively regulate the management of hazardous materials and hazardous waste. Policy CR7.3: Assess hazardous materials management during development review. Assess the use of hazardous materials as part of a development’s environmental review and/or include the development of a hazardous management and disposal plan, as a condition of project approval, subject to review by the San Mateo County Health Department.

Policy CHEJ-4.5: Establish land use restrictions on new toxic wastes. Prohibit new nonresidential uses that are Lindenville Specific Plan 88 Addendum
City of South San Francisco September 2023
Specific Plan, through compliance with the City’s Municipal Code and General Plan Policies, would result in the same less than significant impact as disclosed in the 2040 General Plan EIR. b, d. The Specific Plan area is currently developed with buildings that could contain ACMs, LBP, and PCBs given their age. Future development under the Specific Plan would disturb and potentially release these materials into the environment during demolition activities. Future development under the Specific Plan would be required to comply with local, state, and federal laws, which require surveys be completed by a qualified professional to determine the presence of ACMs, LBP, and PCBs on the structures proposed for alteration or demolition and their appropriate disposal, if present. Thus, impacts from ACMs, LBP, and PCBs would be reduced to a less than significant level, as described on the 2040 General Plan EIR
The Specific Plan area contains two active voluntary cleanup sites and multiple LUST cases, which are listed on hazardous materials lists compiled pursuant to Government Code Section 65962.5.

Future construction activity in proximity to these sites may encounter contaminated soils or groundwater. As discussed above under checklist question a, future development under the Specific Plan would be required to comply with City Municipal Code Section 20.300.010 and General Plan Policies, CHEJ-4.4, CR-7.2, CR-7.3, and CHEJ-4.5, which are described above in a to reduce hazardous materials impacts. In addition, future development would be required to comply with General Plan Policy CHEJ-4.2 which requires that contaminated sites are adequately remediated before allowing new development, Title 8 of the California Code of Regulations (CCR) regarding Cal/OSHA public/worker safety requirements, Title 17 of the CCR regarding asbestos removal, and Title 22 of the CCR regarding contaminated soil excavation. 36 With compliance of existing regulations (including General Plan policies and Municipal Code) as identified in the 2040 General Plan EIR and described above, future development in the Specific Plan area would have a less than significant impact with respect to development on a location listed on a hazardous materials site and possible emission of hazardous materials into the environment. For this reason, the Specific Plan would result in the same less than significant impact as disclosed in the 2040 General Plan EIR.
c. There are no schools located within the Specific Plan area; however, South San Francisco High School and Los Cerritos Elementary School are within 0.25-mile from the western boundary of the Specific Plan area, with South San Francisco High School being closer to the Specific Plan area.

Within 0.25 mile from South San Francisco High School, the Specific Plan proposes to increase the mixed-use density allowed on the west side of the Specific Plan area closest to the school, and reduce the maximum industrial density allowed and remove residential as an allowed use on the south side of Victory Avenue. As discussed under checklist questions a, b, and d above, future development would comply with all federal, state, and local regulations (including General Plan policies and Municipal Code) regarding hazardous waste. In addition, as discussed in the 2040 General Plan EIR, the South San Francisco Fire Department (SSFFD) and City Building Division would coordinate review of building permits to ensure hazardous materials requirements are met prior to construction, known to release or emit toxic waste at levels that are harmful to human health while continuing to allow life science, research and development, medical, and other necessary services such as dry cleaners. 36 Policy CHEJ-4.2: Require remediation before development. Require that contaminated sites are adequately remediated before allowing new development.

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City of South San Francisco September 2023
including required separation between hazardous materials and sensitive land uses and proper hazardous materials storage facilities.37
Future development under the Specific Plan would be subject to the City’s development review process and would comply with the same regulations and requirements identified in the 2040 General Plan EIR. Based on the above discussion, the Specific Plan would result in the same less than significant impact to existing and future schools as disclosed in the 2040 General Plan EIR. e. The Specific Plan is located within the AIA for SFO. Future development projects under the Specific Plan would be required to comply with existing FAA regulations and the SFO ALUCP. In addition, Chapter 3.3 Land Use of the Specific Plan requires standards to adhere to the land use restrictions in the ALUCP safety zones. Chapter 3.5 Height Standards of the Specific Plan regulates building heights within the Specific Plan area and limits building heights according to the FAA regulations and the ALUCP critical aeronautical surface requirements. Compliance with these regulations, polices, and standards, including the obtainment of a Determination of No Hazard when required under FAA Part 77 regulations, would ensure that potential impacts on airport safety operations for SFO are less than significant. This is the same impact as disclosed in the 2040 General Plan EIR.
f. Future development under that Specific Plan would result in 2 additional residents and 252 additional employees in the Specific Plan area compared to the 2040 General Plan, which could increase the demand for emergency response services and evacuation routes. However, as further discussed in Section 3.14 Public Services, the incremental increase in service population is not considered substantial and would not require additional public services than what was identified in the 2040 General Plan EIR. In addition, the 2040 General Plan contains Policy CR-1.6, which requires the City to strengthen emergency management capacity and coordination with the San Mateo County Emergency Operations Center (EOC), and Policy CR-1.7, which requires the City to expand the reach of the Community Emergency Response Team (CERT) program to strengthen community cohesion and emergency preparedness through community engagement efforts. In addition, the San Mateo County Emergency Operations Plan (EOP) is reviewed and updated on a regular basis; thus, the EOP can be modified to reflect the development allowed under the Specific Plan area. The 2040 General Plan EIR concluded that consistency with the above General Plan policies would not impair implementation of or physically interfere with an adopted emergency response plan or emergency evacuation plan. Since the proposed Specific Plan would not substantially change the buildout of the 2040 General Plan, the Specific Plan would result in the same less than significant impact to emergency response and evacuation plans as disclosed in the 2040 General Plan EIR.
g. The Specific Plan area is located within an urban area of the City and is not located within a designated State Responsibility Area (SRA) or a Local Responsibility Area (LRA) Fire Hazard Severity Zone (FHSZ) or Very High Fire Hazard Severity Zone (VHFHSZ); thus, there would be no wildland fire impact.
38 This is the same impact as disclosed in the 2040 General Plan EIR. 37 City of South San Francisco. Draft Program Environmental Impact Report General Plan Update, Zoning Code Amendments, and Climate Action Plan City of South San Francisco, San Mateo County, California.

SCH#2021020064. June 24, 2022. Page 3.8-29.
38 California Department of Forestry and Fire Protection (CAL FIRE). “Fire Hazard Severity Zone Viewer”.

Accessed June 28, 2023. http://egis.fire.ca.gov/FHSZ/.

Lindenville Specific Plan 90 Addendum
City of South San Francisco September 2023

3.9.3 Conclusion
The proposed project would not result in a new significant hazardous materials impact or a substantial increase in the severity of the impacts disclosed in the 2040 General Plan EIR.

Lindenville Specific Plan 91 Addendum
City of South San Francisco September 2023

3.10 HYDROLOGY AND WATER QUALITY
Environmental Issue Area
A. Where
Impact Was
Analyzed in
Prior
Environmental
Documents.

Would the project:
a. Violate any water quality
standards or waste discharge
requirements or otherwise
substantially degrade surface
or ground water quality?
2040 General
Plan EIR pp.

3.9-27 to 3.9-
31 No No No N/A
b. Substantially decrease
groundwater supplies or
interfere substantially with
groundwater recharge such
that the project may impede
sustainable groundwater
management of the basin?
2040 General
Plan EIR pp.

3.9-31 to 3.9-
33 No No No N/A
c. Substantially alter the
existing drainage pattern of
the site or area, including
through the alteration of the
course of a stream or river or
through the addition of
impervious surfaces, in a
manner which would:
i. result in substantial
erosion or siltation onor off-site;
ii. substantially increase
the rate or amount of
surface runoff in a
manner which would
result in flooding on- or
off-site;
iii. create or contribute
runoff water which
would exceed the
capacity of existing or
planned stormwater
drainage systems or
provide substantial
additional sources of
polluted runoff; or
iv. impede or redirect flood
flows?
2040 General
Plan EIR pp.

3.9-33 to 3.9-
37 No No No N/A
Lindenville Specific Plan 92 Addendum
City of South San Francisco September 2023
Environmental Issue Area
A. Where
Impact Was
Analyzed in
Prior
Environmental
Documents.

Would the project:
d. In flood hazard, tsunami, or
seiche zones, risk release of
pollutants due to project
inundation?
2040 General
Plan EIR pp.

3.9-38 to 3.9-
40 No No No N/A
e. Conflict with or obstruct
implementation of a water
quality control plan or
sustainable groundwater
management plan?
2040 General
Plan EIR pp.

3.9-40 to 3.9-
41 No No No N/A

3.10.1 Existing Setting
The existing hydrology and water quality setting, including regulatory framework, has not substantially changed since the certification of the 2040 General Plan EIR.

The Specific Plan area is located within the Colma Creek watershed, which drains into San Francisco Bay, and is located within the boundaries of the Westside Groundwater Basin. The elevation at the Specific Plan area ranges from approximately 30 feet above mean sea level (amsl) on the western edge of the Specific Plan area, to five feet amsl in the southeast corner of the Specific Plan area. The Specific Plan area is located within several flood hazard zones, with Colma Creek within flood hazard zone A, and parts of the eastern portion of the Specific Plan area within flood hazard zone AE. Both flood hazard zone A and AE are 100-year flood, or 1 percent annual chance, flood zones.39 Additional areas within the Specific Plan east of the Caltrain tracks are within the 0.2 percent chance annual flood zones.40 The Specific Plan area is not located within a tsunami inundation zone.41 The Specific Plan area is primarily developed with industrial and commercial uses, with limited amounts of landscaping and open space. As such, the majority of the Specific Plan area is covered with impervious surfaces.

3.10.2 Discussion
The 2040 General Plan EIR concluded that the buildout of the 2040 General Plan would result in less than significant impacts to hydrology and water quality. 39 Federal Emergency Management Agency. “FEMA Flood Map Service Center”. April 5, 2019. Accessed August 15, 2023. https://msc.fema.gov/portal/search?AddressQuery=south%20san%20francisco%2C%20ca. 40 Ibid.
41 City of South San Francisco. Draft Program Environmental Impact Report General Plan Update, Zoning Code Amendments, and Climate Action Plan City of South San Francisco, San Mateo County, California.

SCH#2021020064. June 24, 2022. Exhibit 3.9-4.

Lindenville Specific Plan 93 Addendum
City of South San Francisco September 2023
a. As discussed in the 2040 General Plan EIR, buildout of the General Plan would require excavation, grading, and potentially dewatering of sites, which could result in sediment and other pollutants being transported from active construction sites to nearby creeks, marshes, and the Bay through soil erosion, wind-blown dust, and stormwater runoff. The 2040 General Plan EIR concluded that future development under the General Plan, in compliance with City and Regional Water Quality Control Board requirements (which include compliance with the statewide NPDES General Construction Permit, implementation of stormwater control BMPs, and implementation of construction sediment and erosion control plans), would reduce water quality impacts during construction activities to a less than significant level. While the proposed Specific Plan would incrementally increase growth within the Specific Plan area compared to what was assumed in the 2040 General Plan EIR (the 2040 General Plan would allow a buildout of 5,580 residential units and 9,799,668 square feet of non-residential development within the Lindenville Specific Plan area, while the proposed Specific Plan would increase the residential buildout by 1 dwelling unit and nonresidential buildout by 308,932 square feet), the growth would be in the form of intensification to the same areas already planned for redevelopment, and would also be subject to the same regulations, standards, and guidelines identified in the 2040 General Plan EIR to reduce construction water quality impacts, the proposed Specific Plan would result in the same less than significant impact as disclosed in the 2040 General Plan EIR.

The 2040 General Plan EIR also discussed how post-construction water quality impacts could occur from new development. The 2040 General Plan EIR concluded that future development, in compliance with the Municipal Regional Stormwater Permit Provision C.3 requirements, General Plan policies, and the City’s Municipal Code (which include Low Impact Development [LID] requirements, stormwater control BMPs, hydromodification management, and site design measures), would ensure new development would not result in significant post-construction water quality impacts. In addition, the Specific Plan proposes to integrate blue-green infrastructure into parks and open space, such as regenerative landscapes, green streets, and urban forest, as a stormwater management strategy. The proposed Specific Plan also includes Policy I-4.1, which promotes green infrastructure to reduce runoff and increase infiltration, Policy I-4.2, which promotes stormwater enhancements within public right-of-way (ROW), and Policy I-4.3, which incentivizes LID strategies.42 Since future development under the proposed Specific Plan would be subject to the same regulations, standards, and guidelines identified in the 2040 General Plan EIR to reduce postconstruction water quality impacts and includes additional stormwater management policies as part of the Specific Plan, the proposed Specific Plan would result in the same less than significant impact as disclosed in the 2040 General Plan EIR.
b. The 2040 General Plan EIR concluded that buildout of the General Plan could increase impervious surfaces within the City and increase demand for water, which could lead to an increase in groundwater pumping. The 2040 General Plan EIR concluded that future development, in compliance with the City’s Municipal Code and General Plan polices, would not deplete groundwater supplies or interfere with groundwater recharge. The proposed uses in the Specific Plan area would not extract groundwater for irrigation or drinking purposes and any temporary dewatering during construction would not extract quantities that would deplete groundwater aquifers. In addition, the proposed Specific Plan would add 43.7 acres of parks and open space with blue-green infrastructure, which would increase the amount of pervious surfaces within the Specific Plan area Lindenville Specific Plan 94 Addendum
City of South San Francisco September 2023
and increase infiltration compared to existing conditions. Since the proposed Specific Plan would increase pervious surfaces and is consistent with the analysis in the 2040 General Plan EIR, the Specific Plan would result in in the same less than significant impact as disclosed in the 2040 General Plan EIR.
c. The 2040 General Plan EIR concluded that buildout of the General Plan would contribute runoff to the storm drain system serving the City and include development within Federal Emergency Management Agency (FEMA) designated 100-year flood zones. The 2040 General Plan EIR concluded that future development, in compliance with General Plan polices and the City Municipal Code, would ensure new development does not cause exceedances in the storm drain system and would reduce the risks of flooding to a less than significant level.

The proposed Specific Plan would redevelop an existing urban area that is currently developed with industrial uses. The redevelopment of the Specific Plan area would not alter the drainage pattern of the area and would result in a decrease in impervious surface area given the inclusion of 43.7 acres of parks and open space and the current state, regional, and local regulations requiring development to manage stormwater (as discussed in checklist question a above). In addition, as discussed in Section

2.2.2.5 Infrastructure, the proposed Specific Plan includes blue-green infrastructure such as bioretention cells, rain gardens, bioretention basins, and floodable parks to reduce surface runoff and flooding impacts (see Figure 2.2-13). The City’s Storm Drain Master Plan also includes planned storm drain capital improvements within the Specific Plan area (see Table 2.2-10) to increase the capacity of the storm drain system. Since the proposed Specific Plan is fundamentally consistent with the General Plan and would include blue-green infrastructure to reduce surface runoff, the proposed Specific Plan would result in the same less than significant impact to storm drainage system capacity, drainage patterns, and water quality from runoff as disclosed in the 2040 General Plan EIR. d. As discussed in the 2040 General Plan EIR, parts of the City could be affected by tsunamis, flooding, and sea level rise that could potentially lead to a release of pollutants. The 2040 General Plan EIR, however, concluded that future development, in compliance with the City’s Municipal Code and General Plan policies, would not result in a release of pollutants due to a tsunami, sea level rise, or flooding.

The Specific Plan area is not located within a tsunami or seiche hazard zone; however, certain areas along Colma Creek and in the western portions of the Specific Plan area are located within a FEMA designated 100-year flood zone.43 In addition, the proposed Specific Plan identified additional areas subject to flooding due to sea level rise (see Figure 46 of Appendix A). As discussed under checklist question c, the proposed Specific Plan includes blue-green infrastructure such as bioretention cells, rain gardens, bioretention basins, and floodable parks and the City’s Storm Drain Master Plan includes planned upgrades to the storm drain system within the Specific Plan area. Further, as discussed in Section 3.9 Hazards and Hazardous Materials under checklist question a, compliance with the City’s Municipal Code and General Plan Policies would ensure the proper storage and use of hazardous materials to ensure appropriate containment to prevent spills. Since the proposed Specific Plan is fundamentally consistent with the 2040 General Plan, would include blue-green infrastructure, and construct planned storm drain system improvements per the Storm Drain Master 43 City of South San Francisco. Draft Program Environmental Impact Report General Plan Update, Zoning Code Amendments, and Climate Action Plan City of South San Francisco, San Mateo County, California.

SCH#2021020064. June 24, 2022. Exhibit 3.9-2.

Lindenville Specific Plan 95 Addendum
City of South San Francisco September 2023
Plan, the proposed Specific Plan would not result in release of pollutants from flooding, seiche, or tsunamis. This is the same impact as disclosed in the 2040 General Plan EIR. e. The 2040 General Plan EIR concluded that buildout of the 2040 General Plan could increase impervious surfaces within the City and increase demand for water, which could lead to increased groundwater pumping and conflict with an adopted groundwater management plan. The 2040 General Plan EIR, however, concluded that compliance with the City’s Municipal Code and General Plan polices would ensure buildout of the 2040 General Plan would not conflict with groundwater management plans. The Specific Plan area is located within the Westside Groundwater Basin, which is managed by the California Water Service Company (Cal Water) 2020 Urban Water Management Plan and the South Westside Basin Groundwater Management Plan. There are no recharge facilities, pump plants, or drinking water treatment plants within the Specific Plan area. In addition, as discussed under checklist question b, the proposed Specific Plan would increase pervious surfaces through the provision of 43.7 acres of parks and open space and compliance with state, regional, and local stormwater regulations, further increasing infiltration and recharging of groundwater. Thus, the proposed Specific Plan would not conflict with a groundwater management plan. This is the same impact as disclosed in the 2040 General Plan EIR.

3.10.3 Conclusion
The proposed project would not result in a new significant hydrology and water quality impact or a substantial increase in the severity of the impacts disclosed in the 2040 General Plan EIR.

Lindenville Specific Plan 96 Addendum
City of South San Francisco September 2023

3.11 LAND USE AND PLANNING
Environmental Issue Area
A. Where
Impact Was
Analyzed in
Prior
Environmental
Documents.

Would the project:
a. Physically divide an
established community?
2040 General
Plan EIR pp.

3.10-15 to

3.10-17
No No No N/A
b. Cause a significant
environmental impact due to a
conflict with any land use
plan, policy, or regulation
adopted for the purpose of
avoiding or mitigating an
environmental effect?
2040 General
Plan EIR pp.

3.10-18 to

3.10-21
No No No N/A

3.11.1 Existing Setting
The existing land use setting, including regulatory framework, has not substantially changed since the certification of the 2040 General Plan EIR. The Specific Plan area is developed with predominantly industrial uses, and surrounded by residential development to the north and west, commercial/office/retail to the west, residential/commercial/industrial to the south, and industrial/commercial to the east, as shown on Figure 2.1-3.

3.11.2 Discussion
The 2040 General Plan EIR concluded that buildout of the 2040 General Plan would result in less than significant land use impacts.
a. The Specific Plan does not involve infrastructure components, such as highways or railways, that would physically divide an existing community. The proposed Specific Plan includes new roadways and multimodal improvements that would improve connections within the Specific Plan area, as shown on Figure 2.2-6, Figure 2.2-7, and Figure 2.2-8. The Specific Plan would not physically divide an established community and would result in the same less than significant impact as what was identified in the 2040 General Plan EIR.
b. The 2040 General Plan EIR concluded that the 2040 General Plan incorporates standards and guidelines to minimize environmental impacts of future development. While the Specific Plan would change the land uses and density of select parcels, as described in Section 2.2 Project Description and shown on Table 2.2-4 and Figure 2.2-3, the Specific Plan would place residential growth on the northwestern portion of the Specific Plan area adjacent to existing residential uses and keeping industrial uses in the southeastern portion of the Specific Plan area east of the Caltrain railroad closer to US 101, SFO, and industrial uses east of the Specific Plan area. Specific Plan Chapter 4.6 Lindenville Specific Plan 97 Addendum
City of South San Francisco September 2023
Environmental Effects includes standards for requiring environmental site assessments for development projects and to clean up any contamination under regulatory oversight. Chapter 3.5 Heights regulates building heights within the Specific Plan to ensure compliance with the FAA regulations and SFO ALUCP to prevent aircraft hazard. Chapter 3.3 Land Use prohibits existing nonconforming industrial uses from including new industrial uses with a potential to impact surrounding properties with noise, odors, or light. Chapter 3.7 Arts and Makers includes standards for prohibiting excessive odor, fumes, dust, light, glare, noise, or other similar impacts extending beyond the property line. Future development would be subject to applicable federal, state, regional, and local regulations related to environmental protection and require subsequent project-level environmental review to identify project-specific environmental impacts and mitigation measures to reduce its impacts.

3.11.3 Conclusion
The proposed project would not result in a new significant land use impact or a substantial increase in the severity of the impacts disclosed in the 2040 General Plan EIR.

Lindenville Specific Plan 98 Addendum
City of South San Francisco September 2023

3.12 NOISE AND VIBRATION
Environmental Issue Area
A. Where
Impact Was
Analyzed in
Prior
Environmental
Documents.

Would the project result in:
a. Generation of a substantial
temporary or permanent
increase in ambient noise
levels in the vicinity of the
project in excess of standards
established in the local general
plan or noise ordinance, or
applicable standards of other
agencies?
2040 General
Plan EIR pp.

3.11-24 to

3.11-32
No No No MM NOI-1
b. Generation of excessive
groundborne vibration or
groundborne noise levels?
2040 General
Plan EIR pp.

3.11-32 to

3.11-34
No No No N/A
c. For a project located within
the vicinity of a private airstrip
or an airport land use plan or,
where such a plan has not been
adopted, within two miles of a
public airport or public use
airport, would the project
expose people residing or
working in the project area to
excessive noise levels?
2040 General
Plan EIR pp.

3.11-34 to

3.11-36
No No No MM NOI-3

3.12.1 Existing Setting
The existing noise and vibration setting, including regulatory framework, has not substantially changed since the certification of the 2040 General Plan EIR.

The Specific Plan area is predominantly developed with industrial uses and surrounded by residential development to the north and northwest, commercial/office to the west, residential / commercial/ industrial to the south, and industrial/commercial to the east, as shown on Figure 2.1-3. Existing noise sources in the Specific Plan area and its surrounding area are primarily from vehicles traveling on the roadways, Caltrain operation, and aircraft noise from SFO. According to the 2040 General Plan EIR, the Caltrain railroad, US 101, I-380, and El Camino Real are roadways in the project area that generate noise levels above 65 A-weighted sound level (dBA) Community Noise Equivalent Level (CNEL). Therefore, all other roadways in the project area have noise levels no more than 65 dBA.

Lindenville Specific Plan 99 Addendum
City of South San Francisco September 2023
Portions of the southern part of Specific Plan area are subject to elevated noise levels, including areas in the 65 to 70 dBA CNEL contour, the 70 to 75 dBA CNEL contours, and the tip of the southernmost corner of the Specific Plan area is in the 75 dB or greater CNEL contour.

Sensitive noise receptors adjacent to the Specific Plan area include the residential development 50 feet to the north across Railroad Avenue, immediately adjacent to the western Specific Plan area boundary and across Centennial Way Trail, and 40 feet to the south across Tanforan Avenue.

3.12.2 Discussion
a. The Specific Plan would allow future development within the Specific Plan area that slightly exceeds planned growth from the 2040 General Plan, which would allow a buildout of 5,580 residential units and 9,799,668 square feet of non-residential development within the Specific Plan area. Compared to the 2040 General Plan buildout, the proposed Specific Plan would increase the residential buildout by 1 dwelling unit and non-residential buildout by 308,932 square feet. Future development under the Specific Plan would generate noise from construction activities, traffic, and development operational activities. The temporary and permanent noise impacts of the Specific Plan are described below.

Construction Activities
Noise impacts from construction activities vary depending on the noise generated by the construction equipment, equipment location, distance to and sensitivity of nearby land uses, timing, and duration of construction activities. Construction of future development under the Specific Plan could expose nearby sensitive receptors to excessive noise levels.

The City does not have adopted numeric thresholds of significance for construction noise.

Construction noise is typically considered temporary in nature, intermittent, and a normal part of living in a developed, urban area. However, the City has adopted mandatory requirements in the Municipal Code and 2040 General Plan to ensure construction noise associated with the 2040 General Plan would be less than significant. Municipal Code Section 8.32.050 regulates the time when construction activities may occur, limiting such activities to the period between 8:00 a.m. and 8:00 p.m. on weekdays, on Saturdays between the hours of 9:00 a.m. and 8:00 p.m., and on Sundays and holidays between the hours of 10:00 a.m. and 6:00 p.m. or when authorized by a permit.

According to Section 8.32.060 of the Municipal Code, an exception may be granted to these hours only if an application for construction-related exception is made to and considered by the City Manager or the City Manager’s designee. Section 8.32.050 of the Municipal Code is applied to all construction permits and compliance is mandatory and is monitored by City grading and building department personnel and is also monitored and addressed through reporting by members of the public when construction hours are not being observed. Furthermore, General Plan Policy 1-2 requires enforcement of the City’s Noise Ordinance noise performance standards. In addition, the Actions of Policy 1-2 include the requirement to restrict construction activities to acceptable time periods and to consider constructing temporary sound walls surrounding construction sites during construction. These City regulations would ensure construction noise would not occur during acceptable time periods.

Compliance with mandatory requirements of the Municipal Code and General Plan policies would ensure that construction noise impacts from the Specific Plan would result in the same less than significant impact as what was identified in the 2040 General Plan EIR.

Lindenville Specific Plan 100 Addendum
City of South San Francisco September 2023
Traffic
Based on the 2040 General Plan Land Use/Noise Compatibility guidelines, noise environments with noise levels of up to 65 dBA CNEL are considered normally acceptable for residential, industrial, commercial, open space, and school uses. Based on Municipal Code Chapter 20.300 Lot and Development Standards, noise environments with noise levels of 65 to 70 dBA CNEL are considered conditionally acceptable for residential and school uses.

Based on the 2040 General Plan EIR, a significant traffic noise impact would occur if the 2040 General Plan would cause the CNEL to increase by any of the following:
• 5 dBA or more even if the CNEL would remain below normally acceptable levels for a receiving land use.
• 3 dBA or more, thereby causing the CNEL in the vicinity of the proposed project to exceed normally acceptable levels and result in noise levels that would be considered conditionally acceptable for a receiving land use.
• 1.5 dBA or more where the CNEL currently exceeds conditionally acceptable levels.

As summarized in Table 2.2-3 in Section 2.2 Project Description, the Specific Plan buildout would result in a total population of 11,775 residents and 23,366 employees, which would increase the population by 2 residents and employment by 252 employees compared to the 2040 General Plan buildout assumed within the Specific Plan area. In addition, the Specific Plan proposes roadway improvements to provide additional connectivity within the Specific Plan area, as shown on Figure

2.2-6. Since local roadways within and adjacent to the Specific Plan area do not have noise over 70 dBA (exceeding the conditionally acceptable noise level for the most noise sensitive land uses), the

1.5 dBA or more threshold would not apply to these roadways.

The 2040 General Plan EIR identified that buildout of the 2040 General Plan would increase traffic noise levels in certain roadways and reduce noise levels in other roadways. The highest noise increase of 1.7 dBA was identified along Grand Avenue from Linden Avenue to Airport Boulevard, resulting in a noise level increase to 61.9 dBA CNEL in 2040 conditions, which did not exceed the applicable 5 dBA increase threshold, used for roadways that were already below 65 dBA.

Based on a review of traffic volumes in the Specific Plan area and its surroundings, buildout of the land uses and development expected within the Specific Plan would reduce traffic volumes on Railroad Avenue, South Spruce Avenue, Maple Avenue, Huntington Avenue, and Airport Boulevard, compared to the 2040 General Plan buildout.44 These changes, therefore, would not result in greater impacts, i.e. noise levels in excess of what was identified in the 2040 General Plan EIR. Compared to the 2040 General Plan buildout, the Specific Plan would increase traffic volumes on South Linden Avenue, Mayfair Avenue, Myrtle Avenue, and Tanforan Avenue, however, these increases would not double the volumes at these roadways compared to the 2040 General Plan buildout condition and would not result in a 3 dBA noise increase. For these reasons, the Specific Plan would result in the same less than significant traffic noise impact disclosed in the 2040 General Plan EIR. 44 Traffic volumes of the 2040 General Plan buildout and proposed Specific Plan buildouts are provided by Fehr & Peers.

Lindenville Specific Plan 101 Addendum
City of South San Francisco September 2023
Operational Activities
A significant operational noise impact would occur if the noise levels generated by stationary noise sources at development projects under the Specific Plan would exceed the following noise performance standards:
• Residential: 60 dBA maximum dBA (Lmax) between 7:00 a.m. and 10:00 p.m. and 50 dBA Lmax between the hours of 10:00 p.m. and 7:00 a.m.
• Light Industrial: 60 dBA Lmax between 7:00 a.m. and 10:00 p.m. and 55 dBA Lmax between the hours of 10:00 p.m. and 7:00 a.m.
• Business Park: 65 dBA Lmax between 7:00 a.m. and 10:00 p.m. and 60 dBA Lmax between the hours of 10:00 p.m. and 7:00 a.m.

Future development under the Specific Plan would include new stationary noise sources such as parking lot activities, loading/unloading activities, standby/backup emergency generators, and mechanical ventilation system equipment, which could exceed the noise performance standards described above, including noise-sensitive receptors in the vicinity of the Specific Plan area.

As described in the 2040 General Plan EIR, typical parking lot activities include people conversing, doors shutting, and vehicles idling which could generate noise levels ranging from approximately 60 dBA to 70 dBA Lmax at a distance of 50 feet. Typical maximum noise levels from truck loading and unloading activities could range from 70 dBA to 80 dBA Lmax at a distance of 50 feet. Typical rooftop mechanical equipment noise levels could range from 50 dBA to 60 dBA Leq at a distance of 25 feet. Typical standby/backup emergency generators noise levels are approximately 90 dBA at a distance of 50 feet.

These operational noise levels could exceed the City’s noise performance thresholds at adjacent land uses. The 2040 General Plan EIR identified mitigation measure MM NOI-1 to reduce operational noise impacts to a less than significant level.
2040 General Plan EIR Mitigation Measure
MM NOI-1: Operational Noise Reduction Plan
Prior to issuance of building permits, the project applicant or sponsor shall implement the following measures to limit on-site operational stationary noise source impacts:
• Any proposed development projects that include parking areas, terminals, or loading docks of commercial or industrial land uses within 300-feet of a residential receptor shall demonstrate compliance with Policies NOI-1.1 and NOI-1.2 of the City’s Noise Element by submitting a final acoustical report prepared to the satisfaction of the Planning Division that identifies design measures to adequately minimize the potential noise impacts of vehicles on the site to adjacent land uses. The report must be approved by the Planning Division prior to issuance of building permits.

Lindenville Specific Plan 102 Addendum
City of South San Francisco September 2023
• For any future development project that would include exterior mechanical systems (such as mechanical ventilation systems) within 50 feet of a residential receptor, the project applicant or sponsor shall submit a final acoustical report prepared to the satisfaction of the Planning Division that demonstrates compliance of the project with Policies NOI1.1 and NOI-1.2 of the City’s Noise Element. Noise reduction design features may include, but are not limited to, locating stationary noise sources on the site to be shielded by structures (buildings, enclosures, or sound walls) or by using equipment that has a quieter rating. The report must be approved by the Planning Division prior to issuance of building permits.

Future development under the Specific Plan that fell within the distance requirements to sensitive receptors contained in MM NOI-1 would be required to implement MM NOI-1 by preparing a noise study to identify noise levels as a result of the project and identify design measures to reduce the noise levels below the applicable performance thresholds. For these reasons, the Specific Plan would result in the same less than significant operational noise impacts as identified in the 2040 General Plan EIR.
b. Future development under the Specific Plan could result in short-term vibration impacts during construction activities, and depending on the equipment used, could exceed the Federal Transit Administration (FTA) damage threshold criteria of 0.12 in/sec peak particle velocity (PPV).

The 2040 General Plan includes policies to ensure that construction vibration impacts associated with future development under the 2040 General Plan would be less than significant. General Plan Policy NOI-2.1 requires a vibration impact analysis for any construction activities, located within 100-feet of residential or sensitive receptors that require the use of pile driving or other construction methods that have the potential to produce high groundborne vibration levels. Policy NOI-3.1 requires vibration impact analysis for historic structure protection for construction activities within 150 feet of historic structures. Compliance with these standards is also reiterated in Municipal Code Section

20.300.009. A site-specific analyses would identify measures needed to reduce vibration levels below FTA’s threshold, such as setback requirement, use of alternate construction methods, or pre-emptive trenching to interrupt groundborne vibration transmission.

These policies are applied to all construction permits and compliance is mandatory and monitored by City grading and building department personnel to ensure vibration levels do not exceed FTA’s threshold. Therefore, compliance with General Plan Policies NOI-2.1 and NOI-3.1 and Municipal Code 20.300.009 would result in the same less than significant impact as identified in the 2040 General Plan EIR.

Operations that generate vibration within the City are primarily from rail activities from the Caltrain rail tracks. The Specific Plan does not propose modifying the Caltrain rail tracks within the Specific Plan area or propose vibration-generating operations. Compared to the 2040 General Plan, the Specific Plan proposes to change the land use designations along the Caltrain train tracks by reducing the residential density allowed on the west side (see IDs #3 and 4 shown on Table 2.2-4 and Figure

2.2-3) and changing residential as an allowed use to industrial (see ID #6 shown on Table 2.2-4 and Figure 2.2-3). Groundborne vibration from rail activity could result in levels of annoyance or Lindenville Specific Plan 103 Addendum
City of South San Francisco September 2023
disturbance for residential type land uses located within 200 feet of existing rail lines within the City.

The residential uses on the west side of the Specific Plan would be within 200 feet of the Caltrain train tracks. As identified in the 2040 General Plan, Policy NOI-2.2 requires that a vibration impact analysis be prepared for new land use developments located within 200 feet of an existing rail line, which would ensure groundborne vibration impacts are minimized to acceptable levels. For these reasons, the Specific Plan would result in the same less than significant operational vibration impact as identified in the 2040 General Plan EIR.
c. Same as the 2040 General Plan, the Specific Plan does not propose changes to the operation of SFO, and therefore, would not result in changes to the geographic extent and location of the 65 dBA CNEL airport noise contours.

Within the 65 dBA CNEL noise contour area, the Specific Plan would change the land use designation of select areas from Mixed Industrial to Medium Density Mixed Use (see ID #15 on Table 2.2-4 and Figure 2.2-3), Industrial Transition Zone to Mixed Industrial (see ID #11 on Table

2.2-4 and Figure 2.2-3), Mixed Industrial High to Mixed Industrial (see ID #10 on Table 2.2-4 and Figure 2.2-3), and High Density Mixed Use to Business and Professional Office (see ID #12 on Table 2.2-4 and Figure 2.2-3). These changes, however, would continue to allow residential, industrial, and office uses within the 65 to 70 dBA CNEL airport noise contours as currently allowed under the 2040 General Plan. These land uses could experience noise levels exceeding the City’s noise/land use compatibility standards. The 2040 General Plan EIR identified mitigation measure MM NOI-3 required for future development to reduce noise effects of aircraft noise to meet the City’s noise/land use compatibility standards.
2040 General Plan EIR Mitigation Measure
MM NOI-3 Airport Noise Impact Reduction Plan
Prior to issuance of building permits, the project applicant or sponsor of proposed development projects shall implement the following measures to limit airport activity noise source impacts:
• Any proposed residential development project or any hotel, motel, or transient lodging land use development project, that would be located within the San Francisco International Airport (SFO) 65 A-weighted decibel (dBA) Community Noise Equivalent Level (CNEL) noise contours, shall demonstrate compliance with Policies NOI-1.1 and NOI1.2 of the City’s Noise Element by submitting a final acoustical report prepared to the satisfaction of the Planning Division that identifies design measures to adequately minimize airport activity noise levels to meet the interior noise level standards shown in Table 11 of the Noise Element.

Outdoor active use space must also comply with the exterior noise standards of Table 11 of the Noise Element or must be excluded from such projects. The report must be approved by the Planning Division prior to issuance of building permits.
• Any proposed commercial development project that would be located within the SFO 70 dBA CNEL noise contours shall demonstrate Lindenville Specific Plan 104 Addendum
City of South San Francisco September 2023
compliance with Policies NOI-1.1 and NOI-1.2 of the City’s Noise Element by submitting a final acoustical report prepared to the satisfaction of the Planning Division that identifies design measures to adequately minimize airport activity noise levels to meet the interior noise level standards shown in Table 11 of the Noise Element. The report must be approved by the Planning Division prior to issuance of building permits.
• Any proposed institutional or public facility development project that would be located within the SFO 65 dBA CNEL noise contours shall demonstrate compliance with Policies NOI-1.1 and NOI-1.2 of the City’s Noise Element by submitting a final acoustical report prepared to the satisfaction of the Planning Division that identifies design measures to adequately minimize airport activity noise levels to meet the interior noise level standards shown in Table 11 of the Noise Element. Outdoor active use space must also comply with the exterior noise standards of Table 11 of the Noise Element or must be excluded from such projects. The report must be approved by the Planning Division prior to issuance of building permits.

With implementation of MM NOI-3, future development under the Specific Plan would not expose people residing or working in the Specific Plan area to excessive aircraft noise levels, and result in the same less than significant impact with mitigation as identified in the 2040 General Plan.

3.12.3 Conclusion
The proposed project would not result in a new significant noise and vibration impact or a substantial increase in the severity of the noise and vibration impacts disclosed in the 2040 General Plan EIR.

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City of South San Francisco September 2023

3.13 POPULATION AND HOUSING
Environmental Issue Area
A. Where
Impact Was
Analyzed in
Prior
Environmental
Documents.

Would the project:
a. Induce substantial unplanned
population growth in an area,
either directly (for example,
by proposing new homes and
businesses) or indirectly (for
example, through extension
of roads or other
infrastructure)?
2040 General
Plan EIR pp.

3.12-19 to

3.12-21
No No No N/A
b. Displace substantial numbers
of existing people or housing,
necessitating the construction
of replacement housing
elsewhere?
2040 General
Plan EIR pp.

3.12-21 to

3.12.22 No No No N/A

3.13.1 Existing Setting
The existing population and housing setting, including regulatory framework, has not substantially changed since the certification of the 2040 General Plan EIR.

The Specific Plan area currently contains no housing units and has a total of approximately 9,592 employees between the existing commercial, office, and industrial uses. There have been development projects approved but not yet constructed within the Specific Plan area that would add a population of 2,806 residents and 11,217 employees to the Specific Plan area, resulting in a total of 20,809 employees. The 2040 General Plan buildout would result in a total population of 11,773 residents and 23,114 employees within the proposed Specific Plan area. These population and employment scenarios are summarized in Table 2.2-3.

3.13.2 Discussion
Based on the 2040 General Plan EIR, the buildout of the 2040 General Plan would result in less than significant impacts with regard to population and housing. a. The Specific Plan area is a sub-area within the City that is developed with predominantly industrial uses and surrounded by urban development. The 2040 General Plan identifies the Lindenville subarea as one of the major growth areas within the city. Buildout of the Specific Plan area would result in 11,775 new residents and 23,366 employees to the Specific Plan area, resulting in 2 additional residents and 252 additional employees beyond what was assumed in the 2040 General Plan for the Specific Plan area. The increase in population and employment is the result of retaining an additional 25,315 square feet of existing service use and 242,900 square feet of existing industrial use than what Lindenville Specific Plan 106 Addendum
City of South San Francisco September 2023
was assumed in the 2040 General Plan, and increasing the planned retail development by 221 square feet, office/research and development by 49,233 square feet, and residential development by 1 dwelling unit, and reducing hotel development by 50 rooms compared to the 2040 General Plan.

While the additional net new retail, office/research and development, and residential development would be reallocated from elsewhere within the city (as described in Section 2.2 Project Description), and would not increase the 2040 General Plan buildout for the city, keeping 268,215 square feet of existing development would increase the 2040 General Plan buildout by approximately 0.4 percent, which falls within the margin of error for planned growth for the city and would not lead to growth inducement in the Specific Plan area and the city.
45 The Specific Plan area is urbanized and served by existing roads, public transit, utilities, and public services. As described in Section 2.2 Project Description, the Specific Plan also proposes new roadways and utility improvements; however, these roadways and utility improvements are physically limited to the Specific Plan area and would not increase capacity beyond what is needed to serve the proposed growth or leave an opening for infrastructure connection at undeveloped areas within the city. For these reasons, implementation of the Specific Plan would not contribute to substantial unplanned growth in the city and result in the same less than significant population growth impacts as what was identified in the 2040 General Plan EIR. b. There are no residential units within the Specific Plan area. For this reason, the implementation of the Specific Plan would not displace existing residents or housing and would result in the same less than significant displacement impacts as previously disclosed in the 2040 General Plan EIR.

3.13.3 Conclusion
The proposed project would not result in a new significant population and housing impact or a substantial increase in the severity of the population and housing impacts disclosed in the 2040 General Plan EIR.
45 The 2040 General Plan allows for a buildout of 60,193,220 square feet of development. Source: City of South San Francisco. Draft Program Environmental Impact Report General Plan Update, Zoning Code Amendments, and Climate Action Plan City of South San Francisco, San Mateo County, California. SCH#2021020064. June 24, 2022.

Tables 2-5 and Table 2-7.

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City of South San Francisco September 2023

3.14 PUBLIC SERVICES
Environmental Issue Area
A. Where
Impact Was
Analyzed in
Prior
Environmental
Documents.

Would the project result in substantial adverse physical impacts associated with the provision of new or physically altered governmental facilities, need for new or physically altered governmental facilities, the construction of which could cause significant environmental impacts, in order to maintain acceptable service ratios, response times or other performance objectives for any of the public services:
a. Fire protection?
2040 General
Plan EIR pp.

3.13-22 to

3.13-24
No No No N/A
b. Police protection?
2040 General
Plan EIR pp.

3.13-24 to

3.13-26
No No No N/A
c. Schools?
2040 General
Plan EIR pp.

3.13-26 to

3.13-27
No No No N/A
d. Parks?
2040 General
Plan EIR pp.

3.13-30 to

3.13-32
No No No N/A
e. Other public facilities?
2040 General
Plan EIR pp.

3.13-27 to

3.13-29
No No No N/A

3.14.1 Existing Setting
The existing public services setting, including regulatory framework, has not substantially changed since the certification of the 2040 General Plan EIR.

The Specific Plan area is served by the SSFFD. The nearest fire station to the Specific Plan area is Fire Station #61 located at 480 North Canal Street in the northwest portion of the Specific Plan area.

Police protection services are provided by the South San Francisco Police Department (SSFPD). The SSFPD has an authorized staff of 84 sworn and 35 civilian positions divided into two Divisions:

Operations and Services.46 The SSFFD is headquartered approximately one mile northwest of the Specific Plan area at 1 Chestnut Avenue.
46 City of South San Francisco. “Police Divisions”. Accessed August 1, 2023. https://www.ssf.net/departments/police/divisions.

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City of South San Francisco September 2023
The Specific Plan is located within the South San Francisco Unified School District (SFFUSD), which provides kindergarten through 12th grade education to residents of the city and portions of Daly City and Brisbane. SSFUSD operates nine elementary schools, four middle schools, and three high schools.

There are currently no parks or open space within the Specific Plan area. The nearest park to the Specific Plan area is the Sister Cities Park, located adjacent to the northwest corner of the Specific Plan area, and Orange Memorial Park, located approximately 0.6-mile northwest of the Specific Plan area. Per Chapter 8.67 Parks and Recreation Impact Fee of the Municipal Code, the City has set a standard of three acres of improved parkland per 1,000 residents and 0.5-acres of improved parkland per 1,000 new employees.

There are no public libraries within the Specific Plan area. The South San Francisco Public Library is temporarily closed as it moves to the new Parks and Recreation Center (scheduled to open October 2023) located at the northeast corner of Chestnut Avenue and El Camino Real, approximately one mile northwest of the Specific Plan area.

3.14.2 Discussion
The 2040 General Plan EIR concluded that the build-out of the 2040 General Plan would result in less than significant impacts with regard to public services. a, b. Buildout of the 2040 General Plan would increase the need for fire suppression, rescue response services, and police protection services, and as concluded in the 2040 General Plan EIR, could result in the need for new or physically altered fire/police facilities in order to maintain acceptable service ratios, response times, or other performance objectives. However, no known locations or designs of additional fire/police facilities are known at this time. Any future fire/police facilities would be located on land designated as Public in the General Plan and would undergo separate CEQA environmental review in order to reduce any potential environmental impacts.

As discussed in Section 3.13 Public Services, the Specific Plan would retain an additional 25,315 square feet of existing service use and 242,900 square feet of existing industrial use than what was assumed in the 2040 General Plan, and increase the planned retail development by 221 square feet, office/research and development by 49,233 square feet, and residential development by 1 dwelling unit, and reduce hotel development by 50 rooms compared to the 2040 General Plan. The additional net new retail, office/research and development, and residential development would be reallocated from elsewhere within the city (as described in Section 2.2 Project Description) and would not increase the 2040 General Plan buildout for the city, however, keeping 268,215 square feet of existing development would increase the 2040 General Plan buildout by approximately 0.4 percent.

The incremental increase of 0.4 percent falls within the margin of error for the City’s planned growth, and therefore, is considered to be consistent with the 2040 General Plan buildout.

In addition, future development under the Specific Plan would be constructed to meet current Fire and City Municipal Code standards to increase fire safety and security overall, and would be required to pay public safety impact fees (used to fund SSFFD and SSFPD facilities) per Chapter 8.75 Public Safety Impact Fee of the Municipal Code. In addition, the Specific Plan would comply with General Plan Policy SA-22.7, which requires the City to coordinate with the SSFFD and SSFPD to ensure Lindenville Specific Plan 109 Addendum
City of South San Francisco September 2023
public services can accommodate growth impacts of new development in Lindenville.47 For these reasons, the Specific Plan would have the same less than significant impact on fire/police services and facilities as disclosed in the 2040 General Plan EIR. c. The 2040 General Plan EIR concluded that buildout of the 2040 General Plan would not require the construction of new or expansion of existing school facilities.

The Specific Plan would result in one additional dwelling unit above what was assumed in the 2040 General Plan buildout. Since 2014, enrollment in SFFUSD has declined year over year. SFFUSD has a maximum capacity of 12,000 students and, in March 2022, had 7,888 students enrolled (65.7 percent capacity).48 Therefore, there would continue to be sufficient capacity at SFFUSD with implementation of the Specific Plan.

Furthermore, General Plan Policy SA-22.7 requires the City to coordinate with the SSFUSD to ensure public services can accommodate growth impacts of new development in Lindenville. In addition, future residential development under the Specific Plan would be required to pay school impact fees to offset impacts to local schools. Consistent with state law (Government Code Section 65996) and the 2040 General Plan EIR, payment of fees would reduce impacts to schools to a less than significant level.
d. As discussed in the 2040 General Plan EIR, the increases in residents and employees from the implementation of the 2040 General Plan would increase the use and demand for park facilities throughout the City. Per City Municipal Code Chapter 8.67 Parks and Recreation Impact Fee, the City has set a standard of three acres of improved parkland per 1,000 residents and 0.5-acres of improved parkland per 1,000 new employees. The Specific Plan is estimated to increase the City’s population by approximately 11,775 residents and employment by 23,366 employees to the Specific Plan area; thus, to meet the City standards, the Specific Plan would need to provide a total of approximately 47 acres of improved parkland (approximately 35.32 acres of improved parkland to meet the three acres per 1,000 residents standard and approximately 11.68 acres of improved parkland to meet the 0.5-acre per 1,000 employees standard). As discussed in Section 2.3 Project Description, the Specific Plan proposes a total of 43.7 acres of parks and open space. These parks and open space would help offset the demand on park land by future residents and employees in the Specific Plan area. For the remaining 3.3 acres of open space needed to meet the City’s parkland standards, future development under the Specific Plan would be required to pay the park recreation impact fee, per City Municipal Code Chapter 8.67 to offset the recreational impacts. For these reasons buildout of the Specific Plan would result in the same less than significant impact as identified in the 2040 General Plan EIR.
e. Buildout of the 2040 General Plan would increase demand for library services as described in the 2040 General Plan EIR. The 2040 General Plan EIR concluded that buildout of the 2040 General Plan could result in the need for additional library facilities; however, no known locations or designs 47 General Plan Policy SA-22.7: Adequate public services in Lindenville. Coordinate with the South San Francisco Unified School District and City public services, including the Fire Department and the Police Department, to ensure public services can accommodate growth impacts of this new development in Lindenville. 48 City of South San Francisco. Draft Program Environmental Impact Report General Plan Update, Zoning Code Amendments, and Climate Action Plan City of South San Francisco, San Mateo County, California.

SCH#2021020064. June 24, 2022. Page 3.13-7.

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City of South San Francisco September 2023
of additional library facilities are known at this time. Any future library facilities would be located on land designated as Public in the 2040 General Plan and would undergo separate CEQA environmental review in order to reduce any potential environmental impacts. In addition, future development projects are required to pay a library impact fee, per City Municipal Code Chapter 8.74 Library Impact Fee, which helps finance library facilities. As discussed under checklist questions a and b, the Specific Plan would not increase the population of the 2040 General Plan buildout; therefore, the Specific Plan would result in the same less than significant impact to library facilities as disclosed in the 2040 General Plan EIR.

3.14.3 Conclusion
The proposed project would not result in a new significant public services impact or a substantial increase in the severity of the public services impacts disclosed in the 2040 General Plan EIR.

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City of South San Francisco September 2023

3.15 RECREATION
Environmental Issue Area
A. Where
Impact Was
Analyzed in
Prior
Environmental
Documents.

B. Do Proposed
Changes
Involve New
Significant
Impacts or
Substantially
More Severe
Impacts?
C. Any New
Circumstances
Involving New
Significant
Impacts or
Substantially
More Severe
Impacts?
D. Any New
Information of
Substantial
Importance
Requiring New
Analysis or
Verification?
E. Prior
Environmental
Documents
Mitigations
Implemented
or Mitigations
Address
Impacts.
a. Would the project increase the
use of existing neighborhood
and regional parks or other
recreational facilities such that
substantial physical
deterioration of the facility
would occur or be accelerated?
2040 General
Plan EIR pp.

3.13-30 to

3.13-31
No No No N/A
b. Does the project include
recreational facilities or
require the construction or
expansion of recreational
facilities which might have an
adverse physical effect on the
environment?
2040 General
Plan EIR pp.

3.13-31 to

3.13-32
No No No N/A

3.15.1 Existing Setting
The existing recreational setting, including regulatory framework, has not substantially changed since the certification of the 2040 General Plan EIR.

As described in Section 3.14 Public Services, there are currently no parks or open space within the Specific Plan area. The nearest park to the Specific Plan area is the Sister Cities Park, located adjacent to the northwest corner of the Specific Plan area, and Orange Memorial Park, located approximately 0.6-mile northwest of the Specific Plan area. Per Chapter 8.67 of the City Municipal Code, the City has set a standard of three acres of improved parkland per 1,000 residents and 0.5- acres of improved parkland per 1,000 new employees.

3.15.2 Discussion
a. As discussed in the 2040 General Plan EIR, the increases in residents and employees from the implementation of the General Plan would increase the use and demand for park facilities throughout the City. Per City Municipal Code Chapter 8.67, the City has set a standard of three acres of improved parkland per 1,000 residents and 0.5-acres of improved parkland per 1,000 new employees The Specific Plan is estimated to increase the City’s population by approximately 11,775 residents and employment by 23,366 employees to the Specific Plan area; thus, to meet the City standards, the Specific Plan would need to provide a total of approximately 47 acres of improved parkland (approximately 35.32 acres of improved parkland to meet the three acres per 1,000 residents standard and approximately 11.68 acres of improved parkland to meet the 0.5-acre per 1,000 employees standard). As discussed in Section 2.3 Project Description, the Specific Plan includes a total of 43.7 Lindenville Specific Plan 112 Addendum
City of South San Francisco September 2023
acres of parks and open space. These proposed parks and open space would help offset the demand on park land by future residents and employees in the Specific Plan area. For the remaining 3.3 acres of open space needed to meet the City’s parkland standards, future development under the proposed Specific Plan would be required to pay the park recreation impact fee, per City Municipal Code Chapter 8.67 to offset the recreation impacts. For these reasons buildout of the proposed Specific Plan would result in the same less than significant impact as identified in the 2040 General Plan EIR. b. The 2040 General Plan EIR concluded that buildout of the 2040 General Plan would include the construction of additional recreational facilities; however, the environmental effects of their construction would be reduced to a less than significant level. As discussed above, the proposed Specific Plan includes a total of 43.7 acres of parks and open space. While the approximate location of these parks are known, there are no known designs for these parks nor known funding at this time.

Once the parks are designed, would require subsequent environmental review and be subject to the applicable 2040 General Plan EIR mitigation measures and regulatory framework discussed throughout this Addendum. For these reasons, the Specific Plan would result in the same less than significant impact to recreational facilities as disclosed in the 2040 General Plan EIR.

3.15.3 Conclusion
The proposed project would not result in a new significant recreation impact or a substantial increase in the severity of the recreation impacts disclosed in the 2040 General Plan EIR.

Lindenville Specific Plan 113 Addendum
City of South San Francisco September 2023

3.16 TRANSPORTATION
Environmental Issue Area
A. Where
Impact Was
Analyzed in
Prior
Environmental
Documents.

Would the project:
a. Conflict with a program plan,
ordinance or policy addressing
the circulation system,
including transit, roadways,
bicycle lanes and pedestrian
facilities?
2040 General
Plan EIR pp.

3.14.41 to

3.14-50
No No No MM TRANS4
b. For a land use project, conflict
or be inconsistent with CEQA
Guidelines Section 15064.3,
subdivision (b)?
2040 General
Plan EIR pp.

3.14.35 to

3.14.40 No No No MM TRANS1
c. Substantially increase hazards
due to a geometric design
feature (e.g., sharp curves or
dangerous intersections) or
incompatible land uses (e.g.,
farm equipment)?
2040 General
Plan EIR pp.

3.14.48 to

3.14.40 No No No MM TRANS4
d. Result in inadequate
emergency access?
2040 General
Plan EIR pp.

3.14.50 to

3.14.52 No No No N/A
The discussion in this section is based in part on a traffic memorandum prepared by Fehr & Peers Transportation Solutions in June 2023. The traffic memorandum is included in Appendix C.

3.16.1 Existing Setting
The existing transportation setting, including regulatory framework, has not substantially changed since the certification of the 2040 General Plan EIR.

Regional vehicular access to the Specific Plan area is provided by US 101, State Route 82 (El Camino Real), Interstate 280 (I-280), and Interstate 380 (I-380). Local vehicular access to the Specific Plan area is provided by South Spruce Avenue and South Linden Avenue.

Bus service in the Specific Plan area is provided by the SamTrans, and includes SamTrans Route 141, which stops along South Spruce Avenue and provides access to the San Bruno BART station, and Route 292, which stops at the northeastern corner of the Specific Plan area and provides access to the South San Francisco Caltrain station.

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City of South San Francisco September 2023
The Centennial Way Trail, a Class I facility,49 passes through the western boundary of the Specific Plan area and provides pedestrian and bicycle access to the South San Francisco and San Bruno BART stations. Besides the Centennial Way Trail, bicycle facilities are limited to Class III bicycle facilities50 on South Spruce Avenue and South Linden Avenue. There are sidewalks along the roadways within the Specific Plan area disconnected by site access driveways.

Based on the 2040 General Plan EIR, the existing VMT per service population is 27.42, VMT per resident is 10.28, and VMT per employee is 16.62.

3.16.2 Discussion
a,c. As summarized in Table 2.2-1 in Section 2.2 Project Description, the Specific Plan would result in a net increase in residential and nonresidential development within the Specific Plan area, compared to existing, existing plus recently approved but not yet constructed projects, and a relatively small increase above what was evaluated in the 2040 General Plan EIR for 2040 General Plan buildout conditions, which would result in additional demand to the circulation system, including bicycle and pedestrian facilities, transit, and roadways.

Bicycle and Pedestrian System
The City adopted its Active South City: Bicycle and Pedestrian Master Plan for the purpose of providing safer walking and biking environments and making active transportation an integral part of the City’s transportation system. In addition, the 2040 General Plan includes policies to improve bicycle and pedestrian network, including but not limited to, Policy MOB-1.2.1, which requires traffic calming treatments in all street projects to support lower design speeds, Policy MOB-2.1, which requires incorporation of complete street improvements in all roadway and development projects, and Policy MOB-3.2, which avoids the widening of roadways and prohibits changing traffic operations at the expense of multimodal safety.

The Specific Plan proposes a network of pedestrian priority streets and bicycle priority streets within the Specific Plan area, as shown on Figure 2.2-7and Figure 2.2-8. These street networks would improve circulation and provide multi-modal facilities currently lacking within the Specific Plan area. In addition, Chapter 6.3 Complete Streets Guidance of the Specific Plan includes guidance for designing complete streets accommodating bicycle and pedestrian facilities. For these reasons, the Specific Plan would be consistent with applicable bicycle and pedestrian plans and policies.

Transit System
The 2040 General Plan includes policies to improve the city’s transit network and increase transit use. General Plan Policy MOB-2.1 requires incorporation of complete street improvements in all roadway and development projects. Policy MOB-3.2 prohibits changing traffic operations at the expense of transit reliability. Action MOB-2.1.4 requires capital improvements and development projects near regional transit stations or bus/shuttle routes to incorporate improvements to advance speed, reliability, and access.
49 Class I bicycle facility provides a completely separated right-of-way for the exclusive use of cyclists and pedestrians with cross-flow minimized. Typically, the most desirable for all ages and abilities. 50 Class III bicycle facility provides for shared use with motor vehicle traffic to help guide bicyclists between major destinations. Typically, not suitable for most bicyclists except on local residential streets.

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The Specific Plan proposes a network of transit priority streets within the Specific Plan area, as shown on Figure 2.2-9. These streets would include bus and shuttle stops, high-quality shelters, and transit signal priority, allowing improved transit reliability and connections from the nearby BART and Caltrain stations to the Specific Plan area. For these reasons, the Specific Plan would be consistent with applicable transit policies.

Roadway System and Safety
The 2040 General Plan includes policies to address the roadway system and safety. Policy MOB-1.2 strives to reduce vehicle speeds throughout the City to reduce frequency and severity of collisions, Policy MOB-2.1 requires incorporation of complete streets improvements into all roadway and development projects. Policy MOB-3.2 avoids the widening of roadways and prohibits changing traffic operations at the expense of multimodal safety. Action MOB-3.2.2 requires the City to incorporate new street connections to better distribute vehicle trips across the city network.

Buildout of the Specific Plan would result in a total of 11,775 residents and 23,366 employees within the Specific Plan area. The Specific Plan also proposes change to the existing roadway network within the Specific Plan area as shown on Figure 2.2-6 and summarized below:
• South Spruce Avenue between El Camino Real and Railroad Avenue: Reduced from two to one lane in each direction, with a center turn lane and protected bike lanes. • South Canal Street between South Spruce Avenue and South Linden Avenue: Removal of South Canal Street and extension of Mayfair Avenue from South Spruce Avenue east to South Linden Avenue.
• Street grid between South Spruce Avenue and South Linden Avenue: Introduction of new alleys for vehicular access to new parking and loading at the center of the district. • Myrtle Avenue at South Spruce Avenue: Extension of Myrtle Avenue southeast to South Maple Avenue and South Linden Avenue.
• Noor Avenue at Huntington Avenue: Extension of Noor Avenue northeast to South Maple Avenue with connection to Centennial Way Trail.
• Utah Avenue Extension: Modification of the Utah Avenue Extension project included in the 2040 General Plan to include southbound US-101 ramps.
• San Mateo Avenue at Tanforan Avenue/Shaw Road: New signal at San Mateo Avenue/Tanforan Avenue/Shaw Road.

As described in the 2040 General Plan EIR, the City requires that the modification of existing public facilities and the construction of new facilities comply with the applicable design standards contained in the California Manual on Uniform Traffic Control Devices (MUTCD) and the California Highway Design Manual, which have been developed to minimize the potential for conflicts or collisions. The roadway improvements described above would be designed to comply with the California MUTCD and City’s design guidelines, and therefore, would not result in conflicts in the roadway system. The Specific Plan includes these improvements as depicted on Figure 2.2-6 and as described above, however, each improvement would undergo further design refinement and the City would conduct project-level environmental review prior to implementation to disclose, avoid where possible, and mitigate for any impacts that could result from construction and operation of the improvements.

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A traffic analysis was completed to evaluate the additional traffic generated and roadway improvements described above as a result of the Specific Plan (see Appendix C). The analysis concluded that the Specific Plan would not substantially change the traffic conditions compared to what was identified in the 2040 General Plan EIR. As identified in the 2040 General Plan EIR, the 2040 General Plan buildout would exacerbate vehicle queues on off-ramps that already experience queues exceeding storage capacity and result in a significant impact to roadway safety. The 2040 General Plan EIR identified MM TRANS-4 as a mitigation measure to minimize queuing hazards, which the City would also implement as part of the Specific Plan. 2040 General Plan EIR Mitigation Measure
MM TRANS-4: Freeway Offramp Queue Improvements
To minimize queueing hazards, the City shall work with Caltrans to develop improvement measures for freeway off-ramps and adjacent intersections that help manage offramp queues. These measures may include geometric changes, changes to signal timing and phasing, and new connections as identified in Table 3.14-5. Such improvement measures shall not adversely affect pedestrian, bicycle, and transit conditions or otherwise undermine the City’s VMT mitigation efforts described in MM TRANS-1. MM TRANS-1 is also applicable here and should be implemented to minimize freeway offramp queues.

The 2040 General Plan EIR concluded that even with the implementation of 2040 General Plan policies and actions and implementation of MMs TRANS-4 and TRANS-1, given the uncertainty around specific operational conditions and ability to mitigate such conditions in a constrained rightof-way, this impact remains significant and unavoidable. Since the proposed Specific Plan would result in similar queueing hazards as the 2040 General Plan, it would result in the same significant and unavoidable impact even with implementation of MM TRANS-4. b. As disclosed in the 2040 General Plan EIR, the 2040 General Plan would result in a significant VMT impact, because the VMT per service population (26.80) and work-based VMT per employee (13.40) would exceed the City’s adopted thresholds of being 15 percent below the 2019 nine-county averages for these metrics (23.26 and 12.07, respectively), and require mitigation measure MM TRANS-1 to reduce the VMT impacts. On the other hand, the 2040 General Plan VMT per resident (9.23) would be below the City’s adopted threshold of being 15 percent below the 2019 nine-county average of 11.88, and the roadway improvements proposed would be below the transportation project threshold of no net new VMT, and result in a less than significant VMT impact. 2040 General Plan EIR Mitigation Measure
MM TRANS-1: Transportation Demand Management
To reduce VMT, the City shall implement its Transportation Demand Management (TDM) Ordinance as part of the Zoning Code Amendments and parking requirements. The City shall also update its TDM Ordinance and parking requirements every five to ten years and establish an East of 101 Area Trip Cap, Lindenville Specific Plan 117 Addendum
City of South San Francisco September 2023
to achieve the maximum feasible reductions in vehicle travel. The City shall achieve the performance standards outlined in the TDM Ordinance pursuant to Section 20.400.004 of the Zoning Ordinance.

The City shall review and update its TDM Ordinance every five to ten years to limit Total VMT and Work-Based VMT by incentivizing use of transit and active transportation and disincentivizing auto use. The TDM Ordinance shall cover all development projects generating greater than 100 daily trips, with the most stringent requirements for office/R&D land uses that disproportionately account for the highest rates of VMT in the City. Development projects shall implement a combination of TDM programs (pursuant to Sections 20.400.003 and 20.400.004 of the Zoning Ordinance), services, and infrastructure improvements, including but not limited to: establishing trip reduction programs; subsidizing transit and active transportation use; coordinating carpooling and vanpooling; encouraging telecommuting and flexible work schedules; designing site plans to prioritize pedestrian, bicycle, and transit travel; funding first/last mile shuttle services; establishing site-specific trip caps; managing parking supply; and constructing transit and active transportation capital improvements. Developments shall be subject to annual reporting and monitoring. The City shall establish a fine structure for developments found to be out of compliance and apply any revenues from fines to infrastructure and services aimed at reducing VMT.

The City shall establish an East of 101 Area Trip Cap to support the monitoring of vehicle trip activity and focus efforts to reduce VMT. The area-wide trip cap shall apply to the high intensity employment uses in the East of 101 Area. The City shall conduct annual traffic counts along the cordon area perimeter. Should the trip cap be reached, the City shall consider corrective actions such as: revising mode share targets for projects subject to the TDM Ordinance, identifying new funding measures for TDM services, implementing new vehicle user charges, creating new street connections, or slowing the pace of development approvals within the cordon zone.

The City shall review and update its parking requirements every five to ten years to align with its TDM Ordinance and East of 101 Area Trip Cap. The City shall establish parking maximums for office/R&D uses to ensure that VMT reduction goals are incorporated into the design of development projects.

The 2040 General Plan EIR concluded that even with implementation of MM TRAN-1, it would not reduce the per service population and per employee VMTs below the thresholds exceeded due to uncertainty in the cumulative effectiveness of the TDM ordinance, East of 101 Area Trip Cap, and parking requirement outlined in MM TRAN-1, as well as unknowns related to transit service levels, transportation technology, and travel behavior.

A VMT analysis was completed for the Specific Plan to evaluate the project impact on the City’s VMT as a result of the proposed development growth, land use changes, and roadway improvements.

The analysis modeled these changes and concluded that the VMT per service population, VMT per capita, and VMT per employee would be the same as what was identified in the 2040 General Plan Lindenville Specific Plan 118 Addendum
City of South San Francisco September 2023
EIR because the proposed land use locations would be similar to what was planned in the 2040 General Plan, the additional employment generated would be located within half a mile of the San Bruno BART station, and the roadway improvements would improve connectivity and not induce VMT.

Based on the discussion above, the Specific Plan, even with implementation of MM TRAN-1, would exceed the per service population and per employee VMT thresholds and result in the same significant and unavoidable VMT impact as what was identified in the 2040 General Plan EIR. d. Similar to the 2040 General Plan buildout, future development under the Specific Plan would alter the land use patterns and increase development growth, and therefore, increase travel demand on the transportation network that may influence existing emergency access. However, as described under checklist questions a, b, and c above, the Specific Plan also proposes roadway improvements that would improve the connectivity and traffic operations within the Specific Plan area without inducing VMT. These roadway improvements, which involve street extensions and new alleys, would also break up the existing block sizes, allowing more emergency access. In addition, future development under the Specific Plan would be subject to provisions of the California Fire Code pertaining to emergency access, and the City’s TDM ordinance as described in MM TRANS-1, which would reduce vehicle trips added to the roadway system. Furthermore, General Plan Action 1.6.5 requires the City to maintain and communicate evacuation route plans for businesses and residents. For these reasons, the Specific Plan would result in the same less than significant impact to emergency access as what was identified in the 2040 General Plan EIR.

3.16.3 Conclusion
The proposed project would not result in a new significant transportation impact or a substantial increase in the severity of the transportation impacts disclosed in the 2040 General Plan EIR.

Lindenville Specific Plan 119 Addendum
City of South San Francisco September 2023

3.17 TRIBAL CULTURAL RESOURCES
Environmental Issue Area
A. Where
Impact Was
Analyzed in
Prior
Environmental
Documents.

Would the project cause a substantial adverse change in the significance of a tribal cultural resource, defined in Public Resources Code Section 21074 as either a site, feature, place, cultural landscape that is geographically defined in terms of the size and scope of the landscape, sacred place, or object with cultural value to a California Native American tribe, and that is:
a. Listed or eligible for listing in
the California Register of
Historical Resources, or in a
local register of historical
resources as defined in Public
Resources Code Section
5020.1(k)?
2040 General
Plan EIR pp.

3.4-37 to 3.4-
38 No No No N/A
b. A resource determined by the
lead agency, in its discretion
and supported by substantial
evidence, to be significant
pursuant to criteria set forth in
subdivision (c) of Public
Resources Code Section
5024.1? In applying the
criteria set forth in subdivision
(c) of Public Resources Code
Section 5024.1, the lead
agency shall consider the
significance of the resource to
a California Native American
tribe.
2040 General
Plan EIR pp.

3.4-38
No No No N/A

3.17.1 Existing Setting
The existing tribal cultural resources setting, including regulatory framework, has not substantially changed since the certification of the 2040 General Plan EIR.

A Sacred Lands File request was sent to the NAHC as part of the 2040 General Plan EIR and came back negative. However, a records search at the NWIC identified 15 known tribal cultural resources within the City. As discussed in Section 3.4.1, there are at least two known archaeological resources within the Specific Plan area, and the Specific Plan area could contain previously undiscovered archaeological resources and human remains, particularly along the Colma Creek corridor. Tribal consultation, in accordance with SB 18 and AB 52 was also completed as part of the 2040 General Plan EIR. No tribes responded to requests for consultation.

Lindenville Specific Plan 120 Addendum
City of South San Francisco September 2023

3.17.2 Discussion
a, b. The 2040 General Plan EIR concluded that buildout of the 2040 General Plan would not impact tribal cultural resources through compliance with General Plan Policies, SB 18, and AB 52.

Future development within the Specific Plan area could encounter buried tribal cultural resources during construction. However, future development projects would be required to comply with General Plan Policies ES-10.3, ES-10.4, and ES-10.5 regarding archaeological resources records review and mitigation measures during construction (see Section 3.5 Cultural Resources), and AB 52, when applicable. In addition, General Plan Policy ES-11.1 requires the City to identify, preserve, and protect tribal cultural resources, and Policy ES-11.3 requires the City to consult with local Native American tribes during the development review process.51 As concluded in the 2040 General Plan EIR, with implementation of General Plan Policies ES-10.3, ES-10.4, ES-10.5, ES-11.1, and ES-11.3, and compliance with AB 52, future development in the Specific Plan area would result in less than significant impacts to tribal cultural resources.

3.17.3 Conclusion
The proposed project would not result in a new significant tribal cultural resources impact or a substantial increase in the severity of the tribal cultural resources impacts disclosed in the 2040 General Plan EIR.
51 Policy ES-11.1: Identification of tribal cultural resources. Encourage the identification, preservation, and protection of tribal cultural resources, traditional cultural landscapes, sacred sites, places, features, and objects, including historic or prehistoric ruins, burial grounds, cemeteries, and ceremonial sites in consultation or coordination with the appropriate Native America tribe(s), and shall ensure appropriate treatment of Native American and other human remains discovered during project construction. Policy ES-11.3: Conduct tribal consultation during development review. Consult with local Native American tribes to identify, evaluate, and appropriately address tribal cultural resources and tribal sacred sites through the development review process.

Lindenville Specific Plan 121 Addendum
City of South San Francisco September 2023

3.18 UTILITIES AND SERVICE SYSTEMS
Environmental
Issue Area
A. Where
Impact Was
Analyzed in
Prior
Environmental
Documents.

Would the project:
a. Require or result in the
relocation or construction of
new or expanded water,
wastewater treatment or
stormwater drainage, electric
power, natural gas, or
telecommunications
facilities, the construction or
relocation of which could
cause significant
environmental effects?
2040 General
Plan EIR pp.

3.15-28 to

3.15-30
No No No N/A
b. Have insufficient water
supplies available to serve
the project and reasonably
foreseeable future
development during normal,
dry and multiple dry years?
2040 General
Plan EIR pp.

3.15-30 to

3.15-35
No No No N/A
c. Result in a determination by
the wastewater treatment
provider which serves or may
serve the project that it does
not have adequate capacity to
serve the project’s projected
demand in addition to the
provider’s existing
commitments?
2040 General
Plan EIR pp.

3.15-35 to

3.15-38
No No No N/A
d. Generate solid waste in
excess of state or local
standards, or in excess of the
capacity of local
infrastructure, or otherwise
impair the attainment of solid
waste reduction goals?
2040 General
Plan EIR pp.

3.15-38 to

3.15-40
No No No N/A
e. Be noncompliant with
federal, state, and local
management and reduction
statutes and regulations
related to solid waste?
2040 General
Plan EIR pp.

3.15-38 to

3.15-40
No No No N/A
Lindenville Specific Plan 122 Addendum
City of South San Francisco September 2023

3.18.1 Existing Setting
The existing setting for utilities and service systems, including regulatory framework, has not substantially changed since the certification of the 2040 General Plan EIR.

Water services in the Specific Plan area are provided by Cal Water. Wastewater services are provided by the City of South San Francisco Public Works Department and collected wastewater is sent to the South San Francisco/San Bruno Water Quality Control Plant (WQCP). The WQCP pumps wastewater to the Noth Bayside System Unit outfall and discharges to the San Francisco Bay.

Solid waste collection and recycling services for residents and businesses in the City are provided by South San Francisco Scavenger Company and Blue Line Transfer, respectively.

3.18.2 Discussion
The 2040 General Plan EIR concluded that the build-out of the 2040 General Plan would result in less than significant impacts with regard to utilities and service systems. a. The Specific Plan would not require the relocation or construction of new or expanded electric power, natural gas, or telecommunications facilities that would result in significant environmental effects.

The City’s Sewer Master Plan and Storm Drain Master Plan previously identified planned improvements within the Specific Plan area (see Table 2.2-8 and Table 2.2-10).52,53The Specific Plan proposes seven additional sewer main upgrades (see Table 2.2-9) and two additional storm drainage improvements within the Specific Plan area (see Section 2.2.6 Infrastructure). In addition, the Specific Plan proposes four water main upgrades. The water and sewer main upgrades would upsize existing pipes within the existing ROW, and the storm drain improvements would install bioretention features adjacent to the Navigable Slough and Colma Creek. Construction of these additional improvements could potentially result in significant environmental impacts; however, as discussed throughout this Addendum, compliance with existing General Plan policies, the City’s Municipal Code, and previously identified 2040 General Plan EIR mitigation measures would reduce environmental impacts from buildout of the Specific Plan (including the additional sewer, water, and storm drain improvements) to a less than significant level. This is the same impact as disclosed in the 2040 General Plan EIR.
b. The 2040 General Plan EIR concluded that Cal Water would have sufficient water supplies to serve the buildout of the 2040 General Plan through the year 2045, under normal water years. During single or multiple drought years, water consumption reduction measures, consistent with Cal Water’s Water Shortage Contingency Plan and 2020 Urban Water Management Plan (UWMP), would be implemented on all City customers to ensure sufficient water supplies. The 2040 General Plan would allow a buildout of 5,580 residential units and 9,799,668 square feet of non-residential development within the Lindenville Specific Plan area. Compared to the 2040 General Plan buildout, the proposed Specific Plan would increase the residential buildout by 1 dwelling unit and non-residential buildout by 308,932 square feet, which includes the retention of the 268,214 square feet of existing development 52 City of South San Francisco. City-Wide Sewer System Master Plan. July 2022. 53 City of South San Francisco. Storm Drain Master Plan. February 2016.

Lindenville Specific Plan 123 Addendum
City of South San Francisco September 2023
that the 2040 General Plan assumed would be redeveloped. While the additional net new retail, office/research and development, and residential development would be reallocated from the East of 101 area, and therefore, would not increase the 2040 General Plan buildout for the city, keeping the 268,215 square feet of existing development within Lindenville (assumed to be redeveloped under the 2040 General Plan) would increase the 2040 General Plan buildout by approximately 0.4 percent. 54 The proposed Specific Plan includes Policies I-3.1, I-3.2, I-3.3, and I-3.4, which prioritize the use of recycled water to further reduce water demand within the City.55 In addition, future development would be subject to General Plan policies ES-5.3, ES-5.8, ES-5.9, Policy CP-5.1, and Climate Action Plan Action BE 1.2, Action WW 1.1, Action WW 2.1, Action CL 1.1, Municipal Code Chapter 15.22, that would require developments to include water-efficient design and reduce water demand. Furthermore, each individual project would be required to demonstrate the availability of water to service the development, as required and applicable, in the form of will-serve letters or, for larger projects, i.e., ‘water demand projects’ pursuant to CEQA Guidelines Section 15155, preparation of a Water Supply Assessment per SB 610. If additional facilities were to be constructed, separate environmental analysis would be required, based on the location and details of any proposed facility.

The additional growth of the Specific Plan is within 0.4 percent of the planned growth for the 2040 General Plan, and the Specific Plan is fundamentally consistent with the growth assumptions in the 2040 General Plan, therefore, the Specific Plan’s water demand has been accounted for in the 2040 General Plan EIR and Cal Water’s 2020 UWMP, and the Specific Plan would not result in water demand substantially greater than evaluated in the 2040 General Plan EIR. The Specific Plan would result in the same less than significant impact as disclosed in the 2040 General Plan EIR. c. The 2040 General Plan EIR concluded that full buildout of the 2040 General Plan would not exceed the treatment capacity at the WQCP. As discussed under checklist question b, the additional growth of the Specific Plan is within 0.4 percent of the planned growth for the 2040 General Plan buildout, and so it is fundamentally consistent with the 2040 General Plan; thus, implementation of the Specific Plan would not prevent the WQCP from meeting wastewater treatment requirements and the Specific Plan would result in the same less than significant wastewater impact as disclosed in the 2040 General Plan EIR.
d,e. The 2040 General Plan EIR concluded that buildout of the 2040 General Plan would not generate solid waste in excess of regulatory standards or in excess of local landfill capacity, or otherwise impair the attainment of waste management or reduction goals. As discussed under checklist question b, the additional growth of the proposed Specific Plan is within 0.4 percent of the planned growth for the 2040 General Plan buildout, and so, it is fundamentally consistent with the 2040 General Plan. In addition, future development under the Specific Plan would comply with 54 The 2040 General Plan allows for a buildout of 60,193,220 square feet of development. Source: City of South San Francisco. Draft Program Environmental Impact Report General Plan Update, Zoning Code Amendments, and Climate Action Plan City of South San Francisco, San Mateo County, California. SCH#2021020064. June 24, 2022.

Tables 2-5 and Table 2-7.
55 Policy I-3.1: Targeted utilization. Reduce water demand through targeted utilization of potable uses. Policy I-3.2:

Expand recycled water infrastructure. Reuse “waste” water and expand recycled water infrastructure in the Lindenville Specific Plan area. Policy I-3.3: Water conservation and reuse. Prioritize water conservation and the use of recycled water for outdoor, non-drinkable uses, including in streets, open spaces, and landscaped areas. Policy I3.4: Sustainable development practices. Encourage sustainable development practices for development projects to reduce the demands on the water supply and sanitary sewers systems, including use of recycled water indoors, installation of localized blackwater systems, regenerative and high efficiency landscape practices that reduce water and energy use, and increased building efficiency beyond City standards.

Lindenville Specific Plan 124 Addendum
City of South San Francisco September 2023
General Plan Policy CP-5.4, which requires 75 percent waste diversion for municipal construction and demolition project, Policy CP-6.1, which requires maintenance and regular updates of the City’s waste reduction plans and programs, and Policy CP-6.2, which provides education and technical assistance programs for compost and recycle.56 The Specific Plan would also comply with the California-mandated 50 percent waste diversion and CALGreen standards (including a construction waste recycling requirement and readily accessible areas for recycling). Additionally, as discussed in the 2040 General Plan EIR, there is capacity at the Corina Los Trancos and Newby Island Landfills to serve growth from the 2040 General Plan, which fundamentally includes the growth proposed by the Specific Plan.

Future development under the proposed Specific Plan would be required to comply with the same regulations identified for future development in the 2040 General Plan, and therefore, would result in the same less than significant solid waste impact as disclosed in the 2040 General Plan EIR.

3.18.3 Conclusion
The proposed project would not result in a new significant utilities and service systems impact or a substantial increase in the severity of the utilities and service systems impacts disclosed in the 2040 General Plan EIR.
56 Policy CP-5.4: Require 75 percent waste diversion for municipal construction and demolition projects. Require municipal construction projects to achieve 75 percent waste diversion from the landfill. Policy CP-6.1: Maintain and update Waste Reduction Plan. Maintain and regularly update the City’s waste reduction plans and programs to ensure consistency with California’s waste reduction goals. Policy CP-6.2: Educational outreach about waste diversion. Develop education and technical assistance programs to help all residents and businesses to compost and recycle.

Lindenville Specific Plan 125 Addendum
City of South San Francisco September 2023

3.19 WILDFIRE
Environmental
Issue Area
A. Where
Impact Was
Analyzed in
Prior
Environmental
Documents.

Would the project:
a. Substantially impair an
adopted emergency response
plan or emergency
evacuation plan?
2040 General
Plan EIR pp.

3.16-16 to

3.16-17
No No No N/A
b. Due to slope, prevailing
winds, and other factors,
exacerbate wildfire risks, and
thereby expose project
occupants to pollutant
concentrations from a
wildfire or the uncontrolled
spread of a wildfire?
2040 General
Plan EIR pp.

3.16-18 to

3.16-19
No No No N/A
c. Require the installation or
maintenance of associated
infrastructure (such as roads,
fuel breaks, emergency water
sources, power lines or other
utilities) that may exacerbate
fire risk or that may result in
temporary or ongoing
impacts to the environment?
2040 General
Plan EIR pp.

3.16-19 to

3.16-20
No No No N/A
d. Expose people or structures
to significant risks, including
downslope or downstream
flooding or landslides, as a
result of runoff, post-fire
slope instability, or drainage
changes?
2040 General
Plan EIR pp.

3.16-20 to

3.16-21
No No No N/A

3.19.1 Existing Setting
The existing wildfire setting, including regulatory framework, has not substantially changed since the certification of the 2040 General Plan EIR.

Lindenville Specific Plan 126 Addendum
City of South San Francisco September 2023
The Specific Plan area is located within an urban area of the city and is not located within a designated FHSZ or VHFHSZ in either an SRA or an LRA.
57 The nearest fire hazard zone to the
Specific Plan area is located at San Bruno Mountain, approximately 1.4 miles north.

3.19.2 Discussion
The 2040 General Plan EIR concluded that buildout of the 2040 General Plan would have a less than significant wildfire impact through compliance with 2040 General Plan Policies and the City Municipal Code.
a-d. As discussed above, the Specific Plan area is not located within a fire hazard zone and the nearest one is located 1.4 miles north at San Bruno Mountain. The land between San Bruno Mountain and the Specific Plan area is fully developed with urban uses; thus, the Specific Plan area would not be exposed to wildfire.

3.19.3 Conclusion
The proposed project would not result in a new significant wildfire impact or a substantial increase in the severity of the wildfire impacts disclosed in the 2040 General Plan EIR. 57 California Department of Forestry and Fire Protection (CAL FIRE). “Fire Hazard Severity Zone Viewer”.

Accessed June 28, 2023. http://egis.fire.ca.gov/FHSZ/.

Lindenville Specific Plan 127 Addendum
City of South San Francisco September 2023
SECTION 4.0 REFERENCES
Association of Bay Area Governments. "Priority Development Area Program Overview.” Accessed August 18, 2023. https://abag.ca.gov/technical-assistance/priority-development-areaprogram-overview.

Bay Area Air Quality Management District. “Air Quality Standards and Attainment Status.” Accessed August 16, 2023. https://www.baaqmd.gov/about-air-quality/research-and-data/airquality-standards-and-attainment-status.

Bureau of Transportation Statistics. “Average Fuel Efficiency of U.S. Light Duty Vehicles.” Accessed August 16, 2023. https://www.bts.gov/content/average-fuel-efficiency-us-lightduty-vehicles.

California Department of Conservation. “California Important Farmland Time Series.” 2018. https://maps.conservation.ca.gov/dlrp/ciftimeseries/.

California Department of Forestry and Fire Protection (CAL FIRE). “Fire Hazard Severity Zone Viewer.” Accessed June 28, 2023. http://egis.fire.ca.gov/FHSZ/.

City of South San Francisco. City-Wide Sewer System Master Plan. July 2022. ---. Draft Program Environmental Impact Report General Plan Update, Zoning Code Amendments, and Climate Action Plan City of South San Francisco, San Mateo County, California.

SCH#2021020064. June 24, 2022.
---. “Police Divisions.” Accessed August 1, 2023. https://www.ssf.net/departments/police/divisions. ---. Storm Drain Master Plan. February 2016.

Department of Toxic Substances and Control. “EnviroStor.” Accessed June 28, 2023. https://www.envirostor.dtsc.ca.gov/public/profile_report?global_id=60001636.

Federal Emergency Management Agency. “FEMA Flood Map Service Center.” April 5, 2019.

Accessed August 15, 2023.
https://msc.fema.gov/portal/search?AddressQuery=south%20san%20francisco%2C%20ca.

Raimi + Associates. Greenhouse Gas Inventory and Forecast Memorandum. August 2023.

United States Department of Agriculture, Natural Resources Conservation Service. “Web Soil Survey.” Accessed: February 4, 2021.
https://websoilsurvey.sc.egov.usda.gov/App/WebSoilSurvey.aspx Gross, Billy. Principal Planner, City of South San Francisco. Personal Communication. August 25, 2023.

Yurkovich, Eric. Principal, Raimi + Associates. Personal Communication. August 21, 2023.

Lindenville Specific Plan 128 Addendum
City of South San Francisco September 2023
Lindenville Specific Plan 129 Addendum
City of South San Francisco September 2023
SECTION 5.0 LEAD AGENCY AND CONSULTANTS

5.1 LEAD AGENCY
City of South San Francisco
Community and Economic Development Department
Billy Gross, Principal Planner

5.2 CONSULTANTS
David J. Powers & Associates, Inc.

Environmental Consultants and Planners
Akoni Danielsen, President & Principal Project Manager
Amy Wang, Project Manager
Tyler Rogers, Project Manager
Ryan Osako, Graphic Artist
Raimi + Associates
Planning and Urban Design Consultants
Eric Yurkovich, Principal
Megan McNulty, Senior Planner and Designer
Fehr & Peers Transportation Solutions
Transportation Consultants
Taylor McAdam, Senior Transportation Planner
Brian Lin, Transportation Planner
Lindenville Specific Plan 130 Addendum
City of South San Francisco September 2023
SECTION 6.0 ACRONYMS AND ABBREVIATIONS
ACM Asbestos-Containing Materials
AIA Airport Influence Area
Air Basin San Francisco Bay Area Air Basin
ALUCP Airport Land Use Compatibility Plan
AMO Arts and Makers Overlay
AUO Active Ground Floor Use Overlay
BPO Business and Professional Office
BTP-H Business Technology Park-High
BAAQMD Bay Area Air Quality Management District
BART Bay Area Rapid Transit
BMPs Best Management Practices
BCDC Bay Conservation and Development Commission
CAL FIRE California Department of Forestry and Fire Protection CALGreen California Green Building Standards Code
CARB California Air Resources Board
Cal Water California Water Service Company
CBC California Building Code
CCGO Colma Creek Greenbelt Overlay ()
CCR California Code of Regulations
CDFW California Department of Fish and Wildlife
CEQA California Environmental Quality Act
CERT Community Emergency Response Team
CIPs Capital Improvement Projects
CNEL Community Noise Equivalent Level
CNPS California Native Plant Society
dBA A-weighted sound level
DTSC Department of Toxic Substances Control
DU/AC Dwelling Units per Acre
EOC San Mateo County Emergency Operations Center
EOP Emergency Operations Plan
EPA Environmental Protection Agency
FAA Federal Aviation Administration
Lindenville Specific Plan 131 Addendum
City of South San Francisco September 2023
FAR Floor Area Ratio
FAR Federal Aviation Regulations
FEMA Federal Emergency Management Agency
FHSZ Fire Hazard Severity Zone
FTA Federal Transit Administration
GHG Greenhouse Gas
HIO Height Incentive Overlay
HRA Health Risk Assessments
kWh Kilowatt-hour
LBP Lead Based Paint
LEED Leadership in Energy and Environmental Design
Lmax dBA maximum dBA
LRA Local Responsibility Area
LUST Leaking Underground Storage Tank
MBTA Migratory Bird Treaty Act
MIH Mixed Industrial High
MIM Mixed Industrial Medium
MT Metric Tons
MUTCD California Manual on Uniform Traffic Control Devices NAHC Native American Heritage Commission
NPDES National Pollutant Discharge Elimination System
NWIC Northwest Information Center
OEHHA California Office of Environmental Health Hazard Assessment OS Open Space
PCBs Polychlorinated Biphenyls
PCE Tetrachloroethylene
PPV Peak particle velocity
PQP Public (Zoning District)
PR Parks and Recreation
R&D Research and Development
RDIP Remedial Design Implementation Plan
RH-180 High Density Residential
ROW Right-of-Way
Lindenville Specific Plan 132 Addendum
City of South San Francisco September 2023
RPS Renewable Portfolio Standard
RWQCB Regional Water Quality Control Board
SCH State Clearinghouse
SamTrans San Mateo County Transit District
SFFUSD South San Francisco Unified School District
SFO San Francisco International Airport
SRA State Responsibility Area
SSFFD
T3N
South San Francisco Fire Department
T3 Neighborhood
T3ML T3 Makers Lindenville
T4L T4 Lindenville
T5L T5 Lindenville
TACs Toxic Air Contaminants
TCE Trichloroethylene
TCRs Tribal Cultural Resources
TDM Transportation Demand Management
Title 24 California Building Standards Code
US 101 U.S. Highway 101
USACE United States Army Corps of Engineers
USFWS United States Fish and Wildlife Service
UWMP Urban Water Management Plan
VHFHSZ Very High Fire Hazard Severity Zone
VMT Vehicle Miles Traveled
VOCs Volatile Organic Compounds
WQCP South San Francisco/San Bruno Water Quality Control Plant

South San Francisco City CouncilSeptember 27, 2023

South San Francisco City Council
September 27, 2023