MARYLAND PARKWAY HIGH CAPACITY TRANSIT PROJECT INITIAL SITE ASSESSMENT Prepared by: Parsons 1776 Lincoln Ave., Suite 600 Denver, CO 80203 Prepared for: Regional Transportation Commission of Southern Nevada October 2017 This page is intentionally left blank. TABLE OF CONTENTS Page 1 INTRODUCTION……………………………………………………………………………………………………………… 1 1.1 Project Location…………………………………………………………………………………………………………………. 2 1.2 Purpose……………………………………………………………………………………………………………………………… 2 1.3 Scope of Work……………………………………………………………………………………………………………………. 2 1.4 Assumptions and Limitations……………………………………………………………………………………………. 4 2 SITE DESCRIPTION………………………………………………………………………………………………………….. 4 2.1 Location of the Project Corridor………………………………………………………………………………………… 4 2.2 General Conditions…………………………………………………………………………………………………………… 4 2.3 Current Land Use……………………………………………………………………………………………………………… 4 2.4 Site Geology and Hydrology……………………………………………………………………………………………… 6 3 USER‐PROVIDED INFORMATION…………………………………………………………………………………….. 7 4 RECORDS REVIEW………………………………………………………………………………………………………….. 7 4.1 Federal Records………………………………………………………………………………………………………………… 10 4.2 State Records……………………………………………………………………………………………………………………. 10 4.3 Historical Aerial Photographs…………………………………………………………………………………………… 15 4.4 Topographical Maps………………………………………………………………………………………………………… 16 4.5 Environmental Liens…………………………………………………………………………………………………………. 16 5 SITE RECONNAISSANCE…………………………………………………………………………………………………… 16 6 EVALUATION……………………….………………………………………………………………………………………… 16 7 RECOMMENDATIONS.…………………………………………………………………………………………………… 18 8 REFERENCES.…………………………………………………………………………………………………………………. 19 APPENDICES A Historical Aerial Photographs B Topographical Maps C Online Database Search Results i TABLE OF CONTENTS (continued) Page List of Tables Table 1 Hazardous Material Database Search Summary………………………………………………………….7 Table 2 Hazardous Material Sites Located within the Maryland Parkway Project Corridor………………………………………………………………………………………………………………..…..12 Table 3 Documented Hazardous Waste Releases in the Maryland Parkway Corridor that Remain on the Nevada Department of Environmental Protection Active List……………15 List of Figures Figure 1 Project Vicinity Map with Maryland Parkway Corridor……………………………………………….3 Figure 2 Project Corridor Map with 0.25‐mile Study Area………………………………………..………….…..5 Figure 3 Hazardous Waste Sites Within the Project Corridor……………………………..……………………11 ii ACRONYMS ASTM American Society of Testing Materials bgs below ground surface BRT Bus Rapid Transit BTC LUST CERCIS Comprehensive Environmental Response, Compensation, and Liability Information System CERCLA Comprehensive Environmental Response, Compensation, and Liability Act CORRACTS Corrective Action and Treatment Storage Disposal EO Executive Order ERNS Emergency Response Notification System ESA environmental site assessment F Fahrenheit HRS Hazard Ranking System LUST leaking underground storage tank mg/kg milligrams per kilogram NDEP Nevada Division of Environmental Protection NFRAP No Further Remedial Action Planned NPL National Priorities List PCE tetrachloroethylene RAP Remedial Action Plan RCRA Resource Conservation and Recovery Act RCRIS Resource Conservation and Recovery Information System REC recognized environmental condition ROW right‐of‐way RTC Regional Transportation Commission of Southern Nevada SARA Superfund Amendments and Reauthorization Act SCL State Corrective Action List SEMS Superfund Enterprise Management System SIC Standard Industrial Code TPH total petroleum hydrocarbons TSDF treatment, storage, and disposal facilities UNLV University of Nevada Las Vegas UPRR Union Pacific Railroad USEPA United States Environmental Protection Agency USGS U.S. Geological Survey UST underground storage tank iii This page is intentionally left blank. MARYLAND PARKWAY HIGH CAPACITY TRANSIT PROJECT INITIAL SITE ASSESSMENT 1 INTRODUCTION This report presents the results of the Initial Site Assessment conducted by Parsons for the Regional Transportation Commission of Southern Nevada (RTC) Maryland Parkway High Capacity Transit Project. The project includes an 8.7‐mile‐long alignment from the Las Vegas Medical District through Downtown Las Vegas and the Bonneville Transit Center (BTC), along Maryland Parkway to Sunrise Hospital, The Boulevard Mall, the University of Nevada Las Vegas (UNLV), to McCarren International Airport. Executive Order (EO) 12088, Federal Compliance with Pollution Control Standards, mandates that necessary actions be taken to prevent and control environmental pollution when federal activities or federal facilities are involved. EO 12088 references the following regulations: Resource Conservation and Recovery Act (RCRA); Comprehensive Environmental Response, Compensation, and Liability Act (CERCLA); Superfund Amendments and Reauthorization Act (SARA); Toxic Substance Control Act; and Federal Occupational Safety and Health Act. Worker and public health and safety are key issues when addressing hazardous materials that may affect human health and the environment. Proper management and disposal of hazardous material is vital if it is found, disturbed, or generated during project construction. In addition, The Superfund Cleanup Acceleration Act of 1998 requires purchasers of commercial property to perform a Phase I study meeting the specific standard of American Society of Testing Materials (ASTM) E1527‐13: Standard Practice for Environmental Site Assessments: Phase I Environmental Site Assessment (ESA) Process (ASTM, 2013). A Phase I ESA should be completed within one year prior to the date of property acquisition. The actual sampling of soil, air, groundwater and/or building materials is typically not conducted during a Phase I ESA. The Phase I ESA is generally considered the first step in the process of environmental due diligence. If a site is considered contaminated, a Phase II environmental site assessment may be conducted, ASTM Test E1903, a more detailed investigation involving chemical analysis for hazardous substances and/or petroleum hydrocarbons. A recognized environmental condition (REC) is defined by ASTM E 1527‐13 as: “The presence or likely presence of any hazardous substances or petroleum products in, on, or at a property: (1) due to any release to the environment; (2) under conditions indicative of a release to the environment; or (3) under conditions 1 that pose a material threat of a future release to the environment. De minimus conditions do not pose a threat to human health or the environment and generally would not be subject of an enforcement action if brought to the attention of appropriate governmental agencies; therefore are not recognized environmental conditions.” 1.1 Project Location The project is located in Clark County, Nevada. The northern portion of the project alignment is located in the City of Las Vegas. Figure 1 shows the general location of the project area. 1.2 Purpose The purpose of this Initial Site Assessment is to identify sites that have the potential to affect the proposed project with hazardous materials or waste from current of historic conditions for use in RTC’s decision‐ making process. This Initial Site Assessment is intended to screen for potential sources of hazardous materials within the study area and determine is further evaluation is needed for the project. Property and right‐of‐way (ROW) acquisition will be dependent on the technology that is chosen (light rail transit [LRT] or Bus Rapid Transit [BRT]) and sidewalk enhancements requested by the City of Las Vegas along the 8.7‐mile Maryland Parkway corridor. Potential worker exposure during construction activities would also be dependent on the technology chosen as part of the project. A formal Phase I ESA should be completed within one year prior to the date of property acquisition. Information obtained for this initial site assessment can be used during the Phase I ESA. This report was conducted in general conformance with the scope and limitations of ASTM E1527‐13. 1.3 Scope of Work This Initial Site Assessment compiled information that is readily available on potential parcels and ROW that may be acquired by the RTC as part of the Maryland Parkway project. The scope of work included the following: Site reconnaissance of the corridor; Review of regulatory agency records to identify and assess any listings of regulatory permits, registrations, or enforcement actions along the corridor through both a commercial database and an online agency file review; Review of site history and land use through available historical sources, such as aerial photographs, topographic maps, fire insurance maps, and Clark County Assessor’s Office database; and Preparation of this report describing work performed and presenting a discussion of the results. No interviews were conducted at this stage of the Initial Site Assessment because actual ROW and parcel acquisition has not been determined. 2 Figure 1 Project Vicinity Map with Maryland Parkway Corridor Note: Maryland Parkway transit corridor is represented by the purple line; City of Las Vegas municipal boundaries are shown in beige outline. 3 1.4 Assumptions and Limitations No site assessment can wholly eliminate uncertainty regarding the potential for recognized environmental conditions in connection with a property. This initial site assessment is intended to reduce, not eliminate, uncertainty that a potential property or ROW to be acquired has a recognized environmental condition. Investigative areas not included in the standard ASTM scope include: asbestos, lead‐based