Chapter 3: Environmental Setting and Consequences
Total Page:16
File Type:pdf, Size:1020Kb
CHAPTER 3: ENVIRONMENTAL SETTING AND CONSEQUENCES CHAPTER 3: ENVIRONMENTAL SETTING AND CONSEQUENCES This chapter presents information on the environmental setting in the project area as well as the environmental consequences of the No-Electrification and Electrification Program Alternatives. Environmental issue categories are organized in alphabetical order, consistent with the CEQA checklist presented in Appendix A. The project study area encompasses the geographic area potentially most affected by the project. For most issues involving physical effects this is the project “footprint,” or the area that would be disturbed for or replaced by the new project facilities. This area focuses on the Caltrain corridor from the San Francisco Fourth and King Station in the City and County of San Francisco to the Gilroy Station in downtown Gilroy in Santa Clara County and also includes the various locations proposed for traction power facilities and power connections. Air quality effects may be felt over a wider area. 3.1 AESTHETICS 3.1.1 VISUAL OR AESTHETIC SETTING The visual or aesthetic environment in the Caltrain corridor is described to establish the baseline against which to compare changes resulting from construction of project facilities and the demolition or alteration of existing structures. This discussion focuses on representative locations along the railroad corridor, including existing stations (both modern and historic), tunnel portals, railroad overpasses, locations of the proposed traction power facilities and other areas where the Electrification Program would physically change above-ground features, affecting the visual appearance of the area and views enjoyed by area residents and users. For purposes of this analysis, sensitive visual receptors are defined as corridor residents and business occupants, recreational users of parks and preserved natural areas, and students of schools in the vicinity of the proposed project. Scenic views are defined as long-range views towards preserved natural areas or recognized visual and/or historic landmarks. A visual change would be considered adverse if it introduced obtrusive elements substantially out of character with existing land uses or substantially obscured a scenic view or vista available to sensitive receptors in the vicinity of the proposed project features. 3.1.1.1 Visual Character of Caltrain Corridor Existing transportation facilities, including railroad tracks, ancillary structures, area freeways and roadways, are the dominant visual elements along the existing Caltrain corridor. Towards the northern end of the Caltrain route, adjacent uses are primarily industrial in character, there is little natural landscaping, and there are no views or vistas of interest. Moving southward down the Peninsula, there is a greater variety of adjacent land uses, including residential and natural landscaping; however, rail facilities continue to dominate the visual environment of the corridor. In the southernmost segment of the corridor, between San Jose and Gilroy, land uses along the corridor are primarily residential, rural and agricultural, and the railroad corridor and its facilities are less dominant. Some residential areas in the southern portion of the project area currently Caltrain Electrification Program EA/EIR 3-1 CHAPTER 3: ENVIRONMENTAL SETTING AND CONSEQUENCES enjoy scenic views to the hills in eastern Santa Clara County. Several schools and parks abut the railroad at various locations along the project corridor. 3.1.1.2 Representative Corridor Locations Possessing Sensitive Visual Receptors or Offering Scenic Views The locations described below were selected because they are representative of the numerous Caltrain corridor locations that are proximate to sensitive visual receptors. Visual simulations of existing locations with the proposed electrification facilities of the Electrification Program Alternative in place are discussed in Section 3.1.2.2. Bayshore Station. The existing visual quality of the Bayshore Station area is primarily characterized by the railroad corridor and the industrial land uses surrounding it. The former Schlage Lock Factory (now vacant) is located on the western side of the railroad tracks across from the station platform. Residents on the hill above and northwest of the station currently have views of the railroad right-of-way. Downtown San Bruno. Businesses in Downtown San Bruno have northerly views toward the railroad corridor and San Bruno Avenue grade crossing. Visual elements in the immediate vicinity of the grade crossing include the railroad and ancillary structures, an elevated parking structure and street lighting electroliers. Distant views of the hills from downtown are currently available. San Carlos Station. The San Carlos Station has historically been visually important due to the quality of its architecture. In 1999, the existing at-grade railroad tracks were raised approximately 15 feet, resulting in the rail alignment no longer being at-grade with the station. The elevated rail alignment with its embankment, fencing, lighting, and passenger shelters, now dominates the view of the station from proximate San Carlos streets and businesses. The primary view of the station for passengers leaving the train at San Carlos is of the historic station roof. Redwood Junction. The Redwood “Wye” Junction is located north of the City of Atherton in the railroad corridor. An adjacent residential area is currently separated from the railroad right- of-way by a cyclone fence. Views of the railroad corridor are primarily from the street and sidewalk areas of the neighborhood. Existing utility wires and poles are located along the street next to the railroad. Atherton. The aesthetic setting of the railroad corridor in Atherton is characterized by the spacious homes and mature landscaping in the neighborhood that surrounds it. The historic Atherton depot reflects the high visual quality of the surrounding residential area. Existing residences abut the railroad right-of-way although backyard fences and mature vegetation currently obscure most views of the corridor. San Antonio. Residents in multi-story apartments located across the street from the San Antonio Station currently have views of the at-grade station platform. The station, as viewed from these residences, is characterized by railroad and ancillary structures, street utilities and minimal landscaping. Beyond the station platform, mature trees and landscaping are visible. 3-2 Caltrain Electrification Program EA/EIR CHAPTER 3: ENVIRONMENTAL SETTING AND CONSEQUENCES Passengers on the San Antonio Station platform have views of the railroad corridor and roadway overcrossing at this location. South San Jose. Segments of the railroad right-of-way in southern San Jose are constructed on an elevated embankment. Existing views from residential areas in the vicinity of the corridor in these locations are dominated by the elevated railroad right-of-way. Morgan Hill. The Morgan Hill area is representative of the rural context of the southern portion of the railroad corridor. Existing residential areas currently have high quality views looking eastward across fields and the railroad right-of-way to the mountains beyond. Utility wires and poles are currently visible along the highway in the vicinity of the railroad corridor. 3.1.2 VISUAL/AESTHETIC IMPACTS Physical changes attributable to the Caltrain Electrification Program that would cause changes to views currently experienced by residents and other users of the area are described in this section. Mitigation measures to minimize visual effects are described in Section 3.1.3. 3.1.2.1 No-Electrification Alternative Under the No-Electrification Alternative, the Caltrain system would be rehabilitated and enhanced within the existing JPB or UPRR-owned right-of-way. No major adverse changes to existing visual quality are anticipated because the modifications would largely consist of low- profile trackwork, crossovers, switching equipment, and grade crossing improvements. These types of modifications would be consistent with the current aesthetic quality of the existing railroad corridor, although there would be temporary disruptions causing visual impacts during construction of these facilities. There would be no need to erect OCS poles and wires or other electrification facilities off the right-of-way, however. 3.1.2.2 Electrification Program Alternative Under the Electrification Program Alternative, physical changes would occur where electrification facilities, including the OCS poles and wires, and traction power facilities are proposed. Trees and mature vegetation would be trimmed back to enable placement, operation and maintenance of the poles and wires. These physical changes would alter views from residential or business areas in various locations along the corridor. Overhead Contact System and Traction Power Facilities. OCS poles and wires would be introduced throughout the existing rail corridor from San Francisco to Gilroy. In general, the introduction of OCS poles and wires within an existing railroad corridor would not constitute a substantial adverse visual change; these types of facilities are consistent with the existing visual quality of the active commuter and freight rail corridor. Residents or business occupants, however, may consider these visual effects adverse. The new OCS infrastructure would be more or less visible from corridor residences and businesses, depending on the visual screening between the rail corridor and adjacent