PHASE I ENVIRONMENTAL SITE ASSESSMENT

Transcription

1 PHASE I ENVIRONMENTAL SITE ASSESSMENT ORANGE COUNTY WATER DISTRICT Mid-Basin Injection Well Project Centennial Park Area City of Santa Ana, California May 18, 2015 EEI Project Number OWD Faraday Avenue Suite K Carlsbad, California Ph: Fax:

2 PHASE I ENVIRONMENTAL SITE ASSESSMENT Prepared for: Mr. Greg Woodside, P.G., C.HG Executive Director of Planning and Natural Resources Orange County Water District Ward Street, Fountain Valley, CA Site location: Mid-Basin Injection Well Project Centennial Park Area City of Santa Ana, California Prepared and edited by: DRAFT Polly Ivers Project Scientist Reviewed by: DRAFT Bernard A. Sentianin, PG 5530 Principal Geologist EEI 2195 Faraday Avenue, Suite K Carlsbad, California EEI Project Number OWD

3 TABLE OF CONTENTS GENERAL SITE INFORMATION... i EXECUTIVE SUMMARY... ii 1.0 INTRODUCTION Purpose Scope of Services Reliance PHYSIOGRAPHIC SETTING Site Description Topography Regional and Local Geology Regional and Local Hydrogeology Hydrologic Flood Plain Information SITE BACKGROUND Site Ownership Site History Historical Use Review... 5 TABLE 1 Summary of Historical Use Review City/County Directories Sanborn Fire Insurance Maps City of Santa Ana Planning and Building Agency Regulatory Database Search Federal Databases State and Regional Sources Regulatory Agency Review City of Santa Ana Fire Department Orange County Fire Authority County of Orange Health Care Agency Department of Toxic Substances Control State Water Regional Control Board Review of Division of Oil, Gas, and Geothermal Resources Files National Pipeline Mapping System Interview with Current Property Owner Past or Present Uses Indicating Environmental Concerns Environmental Liens or Governmental Notifications Presence of Hazardous Substances or Environmental Violations Previous Assessments Legal Proceedings User Specific Information Environmental Liens or Activity and Use Limitations Specialized Knowledge Valuation Reduction for Environmental Issues Presence or Likely Presence of Contamination Other... 18

4 TABLE OF CONTENTS (Continued) 3.7 Previous Assessments EEI, Environmental Database Review, June 19, Other Environmental Issues Asbestos-Containing Materials Lead-Based Paint Radon SITE RECONNAISSANCE Purpose Subject Site TABLE 2 Summary of Site Reconnaissance Adjacent Properties VAPOR ENCROACHMENT SCREENING Site Conditions User Provided Information Tier 1 Screening- Search Distance Test Chemicals of Concern Findings FINDINGS AND OPINIONS DATA GAPS Historical Data Gaps Regulatory Data Gaps Onsite Data Gaps Deviations from ASTM Practices CONCLUSIONS REFERENCES FIGURES: Figure 1 Site Location Map Figure 2 Aerial Site Map APPENDICES: Appendix A Résumé of Environmental Professional Appendix B Client Provided Map/Flood Insurance Rate Map Appendix C Historical Aerial Photographs/Topographic Maps/City Directory Report/Sanborn Maps Appendix D Environmental Records Search Appendix E User Provided Information Appendix F Photographic Log Appendix G Vapor Encroachment Screen User Questionnaire

5 GENERAL SITE INFORMATION Project Information: Mid-Basin Injection Well Project EEI Project Number: OWD Site Information: Centennial Park Area City of Santa Ana, California Site Access Contact: Mr. Greg Woodside, Orange County Water District (Ph ) Consultant Information: EEI 2195 Faraday Ave., Suite K Carlsbad, CA Phone: Fax: Address: bsentianin@eeitiger.com Inspection Date: April 9, 2015; Report Date: May 18, 2015 Client Information: Mr. Greg Woodside, P.G., C.HG Executive Director of Planning and Natural Resources Orange County Water District Ward Street, Fountain Valley, CA Site Assessor: Dylan Eshram Staff Scientist EP Certification: I declare that, to the best of my professional knowledge and belief, I meet the definition of Environmental Professional as defined in 40 CFR (Resume, Appendix A). DRAFT Bernard A. Sentianin Principal Geologist AAI Certification: We have the specific qualifications based on education, training, and experience to assess a property of the nature, history, and setting of the subject property. We have developed and performed the all appropriate inquiries in conformance with the standards and practices set forth in 40 CFR Part 312. DRAFT Bernard A. Sentianin Principal Geologist i

6 EXECUTIVE SUMMARY At the request and authorization of the Client (Orange County Water District), EEI conducted a Phase I Environmental Site Assessment (ESA) for the property which comprises the proposed Orange County Water District Mid-Basin Injection Well Project, located within the vicinity of Centennial Park, in the City of Santa Ana, Orange County, California. The purpose of this Phase I ESA was to assess 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 that pose a material threat of a future release to the environment (i.e., recognized environmental condition as delineated in ASTM E ). A de minimis condition is not considered a recognized environmental condition. The proposed Mid-Basin Injection Well Project consists of installing four groundwater injection wells and related underground piping for future water district purposes. This Phase I ESA focuses on the proposed well locations and the connecting underground piping network (subject property) as outlined in the Client provided map. The subject property is located within an area of mixed residential and commercial/light industrial development within the southwest portion of the City of Santa Ana. Centennial Park is immediately bound by West Edinger Avenue to the north, the Godinez High School along with commercial/light industrial development along Castor Street and West Harvard Street to the south, South Fairview Street to the east, and the Santa Ana River Channel to the west. According to the City of Santa Ana Planning Department, the Centennial Park is zoned as open space. Centennial Park was formerly owned by the United States Department of Interior, and was utilized as a federal communications site. Subsequently, the property was conditionally deeded to the City of Santa Ana. The deed included a condition which required coordination with US Department of Interior for any non-park uses proposed in Centennial Park. And by 1987, the property was occupied by Centennial Park, which at that time consisted of open space, structural development within the northern portion, a perimeter access road, and a man-made lake feature. Additional development of the park property appeared to take place beginning in 1995 and included the addition of structural development, soccer fields, and a skateboard park. The four proposed injection well locations are within portions of Centennial Park, owned by the City of Santa Ana. Centennial Park is a 70-acre City Park that features a man-made lake, and active and passive recreation facilities. The address for Centennial Park is identified as 3000 West Edinger Avenue, Santa Ana, California. The entire park property is located on a single parcel identified by APN The proposed locations of the four mid-basin injection wells are within parking lots, which are considered as passive areas of the park. A park perimeter road would provide internal park access to the well sites. The operation and maintenance of the wells would not interfere with recreational activities at Centennial Park. The underground piping segment of the project connects existing wells (located offsite and at the northwest corner of the project area) with the four proposed wells. Beginning from the existing wells, the pipeline route parallels the Santa Ana River overpass at the northwest corner of the project, continues east along Edinger Avenue, where it trends south along the north side entrance to Centennial Park (Santa Ana Site). The piping segment within the park property parallels portions of the parks perimeter access road (West Centennial Road), as well as portions of an interior walking path, connecting to the well locations at several interior parking areas. According to the Client provided map, the pipeline segment of the subject property appears to be approximately 1.0 miles in length. ii

7 EEI contacted the Orange County Fire Authority (OCFA) and Health Care Agency (OCHCA), California Department of Toxic Substances Control (DTSC), State Water Resources Control Board (SWRCB), and reviewed other State and Federal databases to determine if the subject property, or any adjacent properties, were listed as hazardous waste generators, underground storage tank releases (UST), or as having other environmental concerns (i.e., spill, leak, or above-ground tank). A site located within the Centennial Park property was identified on the DTSC database. The site, New High School No. 5 (3000 W. Edinger Avenue), was listed as a proposed school investigation site subject to an investigation in 2001, due to past usage as agricultural land (row crops). The information indicated that a Preliminary Endangerment Assessment was completed and on April 12, 2002, and the DTSC subsequently determined no further action was required at the site. The database information indicated that the immediate vicinity of the subject property was historically utilized for agriculture. Based on the aforementioned DTSC investigation (and no further action status of the New High School No. 5), and the lack of any evidence to the contrary, the past agricultural use of the subject property, and/or adjacent property does not appear to represent an environmental concern. In June 2009, EEI conducted a previous Phase I ESA for the existing OCWD Mid-Basin Injection Well Project Area (EEI, 2009). The project area included The project involved the construction and operation of a mid-basin injection well (MIB-1) and groundwater monitoring well (SAR-10) on a site within the City of Fountain Valley and the construction and operation of a mid-basin monitoring well on a 6,000 square foot open construction site located in southwestern end of Centennial Park in the City of Santa Ana. The report included a review of database listings for possible hazardous waste generating establishments in the vicinity of the site, as well as on sites in the area with known environmental concerns. During the database search, EEI identified the above referenced, New High School No. 5 aka Godinez High School at Centennial Park (3000 West Edinger), as well as four nearby release sites (i.e. located within one-quarter of mile), which had been closed by the appropriate regulatory agency. EEI concluded that based strictly on a review of available environmental database and other, readily accessible regulatory information, there was no evidence of existing environmental concerns related to a release of hazardous substances or petroleum products on the either the subject property or any adjacent properties. EEI performed a Vapor Encroachment Screen (VES) for the subject property, in accordance with ASTM E The purpose was to evaluate whether sites (e.g., gas stations, dry cleaners, or other listings of environmental concern) that store or dispose of potential chemicals of concern or have documented releases, may migrate as vapors onto the property, as a result of contaminated soil and/or groundwater which may be present on or near the property (i.e., a potential Vapor Encroachment Condition or pvec). Based on the results of a Tier 1 VES, EEI concluded that a pvec for the subject property can be ruled out, due to the lack of known or suspected contaminated properties within the Area of Concern. On April 9, 2015, EEI personnel conducted a site reconnaissance to physically observe the site and adjoining properties for conditions indicating a potential environmental concern. Concerns would include any evidence of contamination, distressed vegetation, petroleum-hydrocarbon staining, waste drums, illegal dumping, or improper waste storage and/or handling. During the site reconnaissance, all observations were made from the proposed well locations and pipeline route. No evidence of environmental concern was noted on the subject property during our site reconnaissance efforts. We have performed a Phase I Environmental Site Assessment in conformance with the scope and limitations of ASTM Practice E for the property in the area of the Orange County Water District Mid-Basin Injection Well Project, located within the vicinity of Centennial Park, in the City of Santa Ana, Orange County, California, the subject property. Any exceptions to, or deletions from, this practice are described in Section 7.0 of this report. This assessment has revealed no evidence of recognized environmental conditions in connection with the subject property. iii

8 1.0 INTRODUCTION 1.1 Purpose The purpose of this Phase I Environmental Site Assessment (ESA) was to assess the possible presence of recognized environmental conditions for the property which comprises the Orange County Water District Mid-Basin Injection Well Project, located within the vicinity of Centennial Park, in the City of Santa Ana, Orange County, California (Figure 1). Recognized environmental conditions (RECs) include property uses that may indicate 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 that pose a material threat of a future release to the environment. The term RECs is not intended to include de minimis conditions that generally do not present a material risk of harm to public health or the environment, and that would not be subject to enforcement action by a regulatory agency. This ESA was performed in general conformance with the American Society for Testing and Materials (ASTM) Standard Practice for Environmental Site Assessments: Phase I Environmental Site Assessment Process, Designation E Scope of Services The following scope of services was conducted by EEI: A review of readily available documents which included topographic, geologic, and hydrogeologic conditions associated with the subject site. A review of readily available maps, aerial photographs and other documents relative to historical subject site usage and development. A review of readily available federal, state, county, and city documents and database files concerning hazardous material storage, generation and disposal, active and inactive landfills, existing environmental concerns, and associated permits related to the subject property and/or immediately adjacent sites. A site reconnaissance to ascertain current conditions of the subject property. Interviews with person(s) knowledgeable of the subject property. The preparation of this report which presents our findings, conclusions, and recommendations. 1.3 Reliance This ESA has been prepared for the sole use of the Orange County Water District (Client). This assessment should not be relied upon by other parties without the express written consent of EEI and Client. Any use or reliance upon this assessment by a party other than the Client, therefore, shall be solely at the risk of such third party and without legal recourse against EEI, its employees, officers, or directors, regardless of whether the action in which recovery of damages is brought or based upon contract, tort, statute or otherwise. 1

9 This assessment should not be interpreted as a statistical evaluation of the subject site, but rather is intended to provide a preliminary indication of onsite impacts from previous site usage and/or the release of hazardous materials. If no significant indicators of the presence of hazardous materials and/or petroleum contamination are encountered during this search, this does not preclude their presence. The findings in this report are based upon published geologic and hydrogeologic information and information (both documentary and oral) provided by the Client, City of Santa Ana, Orange County, Environmental Data Resources Inc. (EDR ) (i.e., agency database search, and various state and federal agencies, and EEI s field observations). Some of these data are subject to change over time. Some of these data are based on information not currently observable or measurable, but recorded by documents or orally reported by individuals. 2.0 PHYSIOGRAPHIC SETTING 2.1 Site Description The subject property comprises the Orange County Water District Mid-Basin Injection Well Project, located within the vicinity of Centennial Park, in the City of Santa Ana, Orange County, California (Figure 2). According to information provided by the Client, the Mid-Basin Injection Well Project consists of installing four groundwater injection wells and related underground piping for future water district purposes. This Phase I ESA focuses on the proposed well locations and the connecting underground piping network outlined in the Client provided map included in Appendix B. The subject property is located within an area of mixed residential and commercial/light industrial development within the southwest portion of the City of Santa Ana. Centennial Park is immediately bound by West Edinger Avenue to the north, the Godinez High School along with commercial/light industrial development along Castor Street and West Harvard Street to the south, South Fairview Street to the east, and the Santa Ana River Channel to the west. According to the City of Santa Ana Planning Department, the Centennial Park is zoned as open space. The Orange County Water District Groundwater Replenishment (GWR) pipeline and the Orange County Sanitation District Santa Ana River Interceptor pipeline are both located below the surface of the river levee. The segment of the Santa Ana River near the project site is improved with a concrete bottom with concrete sidling along its embankments. The levees are under the jurisdiction of the County of Orange and the US Army Corps of Engineers. Additionally, a County of Orange Regional Riding and Hiking Trail is designated along the top of the levee. Proposed Well Locations The four proposed injection well locations are within portions of Centennial Park, owned by the City of Santa Ana. Centennial Park is a 70-acre City Park that features a man-made lake, and active and passive recreation facilities. The address for Centennial Park is identified as 3000 West Edinger Avenue, Santa Ana, California. The entire park property is located on a single parcel identified by APN Centennial Park was formerly owned by the United States Department of Interior prior to be conditionally deeded to the City of Santa Ana. The deed includes a condition which requires coordination with US Department of Interior for any non-park uses proposed in Centennial Park. The proposed locations of the four mid-basin injection wells are within parking lots, which are considered as passive areas of the park. A park perimeter road would provide internal park access to the well sites. The operation and maintenance of the wells would not interfere with recreational activities at Centennial Park. 2

10 Underground Piping Segment The underground piping segment of the project connects offsite existing wells with the four proposed wells. Beginning from the existing wells, located at the northwest corner of the intersection of Edinger Avenue and the Santa Ana River overpass (Figure 2), the pipeline route parallels the Santa Ana River overpass at the northwest corner of the project, continues east along Edinger Avenue, where it trends south along the north side entrance to Centennial Park (Santa Ana Site). The piping segment within the park property parallels portions of the parks perimeter access road (West Centennial Road), as well as portions of an interior walking path, connecting to the well locations at several interior parking areas. According to the Client provided map, the pipeline segment of the subject property appears to be approximately 1.0 miles in length. Historical Background Centennial Park was formerly owned by the United States Department of Interior, and was utilized as a federal communications site. Subsequently, the property was conditionally deeded to the City of Santa Ana. The deed included a condition which required coordination with US Department of Interior for any non-park uses proposed in Centennial Park. And by 1987, the property was occupied by Centennial Park, which at that time consisted of open space, structural development within the northern portion, a perimeter access road, and a man-made lake feature. Additional development of the park property appeared to take place beginning in 1995 and included the addition of structural development, soccer fields, and a skateboard park. The adjacent and surrounding properties appeared as a mix of residential and commercial development beginning in the 1960 s. 2.2 Topography The subject property is located on the United States Geological Survey (USGS) 7.5 Minute Newport Beach Quadrangle map (USGS, 1981). The map indicates the elevation of the subject property site ranges from approximately 45 feet above mean sea level (amsl) at the southeast portion to approximately 65 feet amsl at the northwest portion. The east levee of the Santa Ana River Channel (concrete lined) abuts the western margin of Centennial Park. In the site vicinity, the river channel generally trends in a northeast to southwest direction. 2.3 Regional and Local Geology The subject property and vicinity is located in the Orange County Coastal Basin, which is west of the Santa Ana Mountains, and within the northwestern portion of the Peninsular Ranges geomorphic province. The Peninsular Ranges geomorphic province, one of the largest geomorphic units in western North America, extends from the Transverse Ranges geomorphic province and the Los Angeles Basin, south to Baja California. The Peninsular Ranges are essentially a series of ranges separated by northwest trending valleys, sub-parallel to faults branching from the San Andreas Fault. The trend of topography is similar to the Coast Ranges, but the geology is similar to the Sierra Nevada, with granitic rock intruding the older metamorphic rocks. The Peninsular Ranges extend into lower California and are bound on the east by the Colorado Desert (CDMG, 2002). Structural deformation in the vicinity of the subject property is related to the Upper Newport Bay and the Newport-Inglewood Fault Zone (located approximately 6 miles southwest), the Whittier Fault, and the Elsinore Fault. Additional known faults in the vicinity of the subject property include the Palos Verde Hills Fault, the Elysian Park Fault, the Sierra Madre Fault, the Cucamonga/San Jose Fault, the San Jacinto Fault, the San Andreas Fault, and the San Clemente Fault. The subject property is located within Seismic Zone 4 of Southern California, with active and potentially-active faults (CDMG, 1998; Hart & Bryant, 1997). 3

11 Soils beneath the site vicinity have been identified by the United States Department of Agriculture - Soil Conservation Service (USDA, 2015) as belonging to the Metz (loamy sand). The Metz series consists of very deep, somewhat excessively drained soils that formed in alluvial material from mixed, but dominantly sedimentary rocks. Metz soils are on floodplains and alluvial fans and have slopes of 0 to 15 percent. These soils have negligible to slow runoff; and moderately rapid permeability. In addition, the Santa Ana River channel is identified by the USDA as Riverwash (USDA, 2015). 2.4 Regional and Local Hydrogeology According to the Santa Ana Regional Water Quality Control Board - Region 8 (SARWQCB, 1995), the site is located in the East Coast Plain Hydrologic Subarea (HSA 1.11), of the Santa Ana River Hydrologic Unit. Groundwater in the East Coast Plain HSA has listed beneficial uses for Agricultural, Municipal, Industrial and Industrial Process Supply purposes. The site area is located within a pressure zone where semi-confined to confined water conditions exits. Groundwater within the aquifer of the pressure zone in the site vicinity generally flows to the west-southwest (OCWD, 1984). Regionally the groundwater surface flow follows the natural topography to the southwest. Data obtained from the GeoTracker website (SWRCB, 2015), regarding an environmental cleanup case related to the A & D Compserv Gasoline Station (2721 W. Edinger Avenue; 0.16 miles northeast of the nearest portion of subject property), reported depth to groundwater in 2012, to be between 6.52 feet and feet below ground surface (bgs), and the groundwater gradient and flow direction was reported to be feet/foot to the south (Ninyo and Moore). EEI researched additional nearby release case information on the GeoTracker website (i.e., cases within a one-quarter mile radius from the subject property) for additional groundwater gradient data. According to the information reviewed, the groundwater gradient in the immediate site vicinity appears to be in a south to southwesterly direction. EEI reviewed the California Department of Water Resources, Water Data Library website (WDL, 2015) for information pertaining to groundwater and water supply wells on or close to the subject property. According to the website, there are no water supply wells located in the immediate site vicinity (i.e., within approximately one-half of a mile). 2.5 Hydrologic Flood Plain Information EEI reviewed the Federal Emergency Management Agency (FEMA) Flood Insurance Rate Map (FIRM) online database to determine if the subject property was in a flood zone. According to FIRM Number 06059C0256J Panel No.256 of 539 effective December 3, 2009, the subject property, labeled as a US Government Reservation Area, is located within flood Zone D. FEMA defines Zone D as an area where there are possible but undetermined flood hazards, as no analysis of flood hazards has been conducted. The adjacent property to the west within the Santa Ana River Channel, and to the east within the Greenville Banning Channel, are designated as within flood Zone A. FEMA defines Zone A as areas subject to inundation by the 1-percent-annual-chance flood event. A copy of the FIRM is included in Appendix B. 3.0 SITE BACKGROUND 3.1 Site Ownership Information regarding the subject property ownership was obtained from the Client. According to the information provided, the subject property, located within the vicinity of Centennial Park, is owned by the City of Santa Ana. 4

12 3.2 Site History EEI reviewed readily available information sources to evaluate historic land use in and around the subject site. These information sources include aerial photographs, USGS maps, City of Santa Ana Planning and Building and Safety Department files. The information sources are reviewed in the following sections Historical Use Review Aerial photographs and historical topographical maps, provided by EDR, were reviewed to identify historical land development and any surface conditions which may have impacted the subject property. Photographs and historical topographic maps dating between 1901 and 2012 were reviewed. A 2014 aerial photograph was obtained from Google Earth, a copy of which is included herein (Figure 2). Table 1 summarizes the results of the aerial photograph and historical topographic map review. Copies of the aerial photographs and historical topographic maps provided by EDR, Inc. are included in Appendix C. According to the information reviewed, from at least 1938, the immediate vicinity of the subject property appeared with open fields which had been plowed and possibly irrigated. In topographic maps dating from 1965 through 1981, the location of the present day Centennial Park (east of the river channel) was labeled as FAA Facility; US Government Reservation. By 1987, the property was occupied by Centennial Park, which at that time consisted of open space, as well as several buildings and an asphalt parking area within the northern portion, a circular access road, ponds, and related landscaping. Additional development of the park property appeared to take place beginning in 1995 and included the addition of buildings, playing fields, and a skateboard park. The adjacent and surrounding properties appeared as a mix of residential and commercial development beginning in the 1960 s. TABLE 1 Summary of Historical Use Review Year Source and Scale Comments 1901/ Topographic Map 62,500/1:250,000 Topographic Map 1:31,680 Aerial Photograph 1 inch = 500 feet Topographic Map 1:50,000 Aerial Photograph 1 inch = 500 feet Topographic Map 1:24,000 Scale of the map did not allow for a detailed review of the subject property. Site vicinity seen with urban development in the area of Santa Ana. The subject property appeared as undeveloped land. Streets and urban development appeared in the immediate site vicinity. The Santa Ana River appeared within a channel trending southwest. Residential development noted to the east on both sides of Newport Road at Edinger Avenue. Area labeled as Santa Ana Gardens. The subject property appeared with open fields which had been plowed and possibly irrigated. Sparse rural residential development was seen in the surrounding area. Subject property and adjacent property remained as undeveloped land. Streets and urban development appeared in the immediate site vicinity. The Santa Ana River appeared within a channel to the east. The subject property appeared as an open field which had been plowed, with several access roads noted. A residence appeared within northeast portion of the present day Centennial Park property. Surrounding area remained as mainly agricultural land. Present day Centennial Park property appeared labeled as Federal Communications Commission. Increased residential development was seen to the east at Newport Road. 5

13 TABLE 1 Summary of Historical Use Review Year Source and Scale Comments / / / 1990/ / / Aerial Photograph 1 inch = 500 feet Aerial Photograph 1 inch = 500 feet Topographic Map 1:24,000 Aerial Photograph 1 inch = 500 feet Topographic Map 1:24,000 Aerial Photograph 1 inch = 500 feet Aerial Photograph 1 inch = 500 feet Aerial Photograph Google Earth (Color) No apparent changes were noted in the vicinity of the subject property since the previous photograph. No apparent changes were noted in the vicinity of the subject property since the previous photograph. Adjacent property to the north of Edinger Avenue and to the east of Fairview Street appeared entirely covered with residential development. Property to the south remained as undeveloped land. Present day Centennial Park property labeled as FAA Facility; US Government Reservation. The Santa Ana Corporate Boundary ran parallel along the east side of the river channel. Increased urban development was seen in the surrounding area. No apparent changes were noted in the vicinity of the subject property since the previous photograph, with the exception of buildings, including a school and playing fields, now present on the southeast portion of Centennial Park and immediately south of the park property. In the 1977 photograph, the majority of the park property was delineated into large fields bounded by access roads. No apparent changes were noted on the subject property, adjacent property since the 1972 map. Increased development appeared in the surrounding area. Centennial Park was now present. The park included several buildings and asphalt parking area within the northern portion, a circular access road through the park, ponds, open fields and vegetation. Increased development was located to the south of the park property and in the surrounding area. In 1995, a portion of the park (southeastern portion) appeared cleared of vegetation. The southeastern portion of the park property appeared with additional buildings, playing fields and a running track (2009). The western portion of the park property (along the river channel) appeared with additional structures and delineated rectangular fields. Vicinity of the Santa Ana site was occupied by Centennial Park. The park included several buildings and asphalt parking areas within the northern and southeast portions, a running track, playing fields, and a circular access road through the park, ponds, open fields and vegetation. Surrounding area appeared with mainly residential development with some commercial development along the major nearby streets City/County Directories Directory listings associated with the street addresses located adjacent to and in the vicinity of the subject property was obtained from EDR, an environmental information/database retrieval service. The nearby streets of the Santa Ana site, including the 2800, 2900, and 3000 blocks of Edinger Avenue, West Borchard Avenue, and West Hood Avenue, and the 1400 block of Mowhawk Drive, all located to the north of the subject property, were listed in directories dating from the 1960 s through The addresses were listed with mainly residential listings during this time. According to the information reviewed, no gas stations, cleaners, automotive shops, and other occupants of potential environmental concern were located adjacent to the subject property. A copy of the City Directory Report is provided in Appendix C. 6

14 3.2.3 Sanborn Fire Insurance Maps EEI researched available Sanborn Fire Insurance Maps of the subject property. Sanborn Maps provide detailed information on site structures, uses, and occupancies and were typically utilized by insurance companies to evaluate potential fire risk. EEI requested a Sanborn map search from EDR, an environmental information/database retrieval service. According to EDR, there is no Sanborn map coverage for the area of the subject property (Appendix C) City of Santa Ana Building Safety Division The subject property is identified as the Mid-Basin Injection Well Project which consists of installing five groundwater injection wells and related underground piping within property owned by the City of Santa Ana, with no designated property address (s). Given this, building permit information was not researched during this Phase I ESA, as it was not deemed to be significantly useful. 3.3 Regulatory Database Search EEI reviewed known electronic database listings for possible hazardous waste generating establishments in the vicinity of the subject site, as well as adjacent sites with known environmental concerns. Facilities were identified by county, state, or federal agencies that generate, store, or dispose of hazardous materials. The majority of information in this section was obtained from EDR, an environmental information/database retrieval service. A copy of the EDR report is provided in Appendix D, along with a description of the individual databases. Following is a list of databases that were reviewed in the preparation of this report Standard Environmental Databases Federal National Priority site list (NPL) No listings were reported within a one mile radius of the subject property. Federal Delisted NPL site list No listings were reported within a one mile radius of the subject property. Federal Comprehensive Environmental Response, Compensation, and Liability Information System (CERCLIS) list No listings were reported within a one-half mile radius of the subject property. Federal CERCLIS No Further Assessment Planned (NFRAP) site list Two listings were reported within a one-half mile radius of the subject property. Two listings were reported within a one mile radius of the subject property. Safety Kleen Corporation (2120 South Yale Street, approximately 0.46 miles southwest of the nearest portion of the subject property) was listed as an EPA site in According to information reviewed this facility has been operation at this location since the 1970 s. This facility is a major logistical hazardous waste transportation /storage facility that bulks and stores City of Santa Ana generators waste. Assessment was completed and the site was archived in S and G Tube Company, Inc. DBA Liberty Plat (3400 West Maywood Avenue, approximately 0.40 miles south of the nearest portion of the subject property) listed as an EPA site in No further remedial action was planned as of 1985 and the site was archived. Based on location (i.e. more than one-eighth mile of the subject property and situated hydrologically cross- to down-gradient), these sites are not considered an environmental concern. 7

15 Federal Resource Conservation Recovery Act (RCRA) Corrective Action Sites (CORRACTS) facilities list One listing was reported within a one mile radius of the subject property. The site, Safety-Kleen Systems (2120 South Yale Street, approximately 0.46 miles southwest of the nearest portion of the subject property), was dual listed above. Based on location (i.e. more than one-eighth mile of the subject property and situated hydrologically cross- to down-gradient), these sites are not considered an environmental concern. Federal RCRA non-corracts facility and Treatment, Storage and Disposal (TSD) facility list (RCRA-TSDF) No listings were reported within a one-half mile radius of the subject property. The site, Safety-Kleen Systems (2120 South Yale Street, approximately 0.46 miles southwest of the nearest portion of the subject property), was dual listed above. Based on location (i.e. more than oneeighth mile of the subject property and situated hydrologically cross- to down-gradient), these sites are not considered an environmental concern. Federal RCRA generators list (RCRA-LQG) Three listings were reported within a one-quarter mile radius of the subject property. Generator permits are not generally rationale for environmental concern, unless a facility has a dual listing, such as a reported release. The listings BEO-MAG (3313 and 3315 W. Harvard Street, 0.22 miles southwest), and Precision Circuits (3310 W. Harvard Street, 0.24 miles southwest) from the nearest portion of the subject property, have not reported a release under the LUST database; and therefore, are not considered an environmental concern. Federal RCRA generators list (RCRA- SQG CESQG) Six listings were reported within a onequarter mile radius of the subject property. Generator permits are not generally rationale for environmental concern, unless a facility has a dual listing, such as a reported release. One of the listings, Withers Tire, Inc. (16142 S. Harbor Boulevard, approximately 0.22 miles northwest of the nearest portion of the subject property), is a release site which has been closed by the appropriate regulatory agency. The remaining sites, Harbor Office Resource (3330 W. Castor Street, 0.15 miles southwest); Southwest Aerospace (1919 S. Susan Street, 0.15 miles southwest); Fountain Valet Clean (16169 Harbor Boulevard, 0.25 miles northwest); BAF Industries (1910 S. Yale Street (0.22 miles southwest); and Superior MFG (3133 W. Harvard Street, 0.23 miles south), have not reported a release under the LUST database. Federal institutional controls/engineering controls (IC/EC) registries No listings were reported within a one-half mile radius of the subject property. Federal Emergency Response Notification System (ERNS) No listings were reported for the subject property State and Regional Sources State and Tribal equivalent NPL sites One listing was reported within a one mile radius of the subject property. The site, Grove Investment Property (3500 West Warner Avenue, 0.70 miles southwest of the nearest portion of the subject property), was reported as a cleanup site under the direction of the RWQCB. Based on location (i.e. more than one-eighth mile of the subject property and situated hydrologically cross- to down-gradient), these sites are not considered an environmental concern. 8

16 State/Tribal equivalent CERCLIS (ENVIROSTOR) sites Twenty three (23) listings were reported within a one mile radius of the subject property. The California DTSC tracks facilities with known contamination with hazardous substances and uncharacterized properties which may be contaminated. One site, New High School No. 5 (3000 W. Edinger Avenue), was identified as located within the Centennial Park property. The site is discussed below in Section DTSC. The remaining listings are located greater than one-eighth of a mile from the subject property and are not considered an environmental concern. State and tribal landfill and/or solid waste disposal site lists One listing was reported within a onehalf mile radius of the subject property. The site, former Santa Ana City Dump (West Bank of Santa Ana River, 0.32 miles northwest of the subject property), was reported as a solid waste disposal site with an operational status listed as closed. The site is currently occupied by the Stone Ridge Trailer Park. Based on the close status and location (i.e. greater than one-eighth of a mile from the subject property), this site is not considered an environmental concern. State and tribal leaking storage tank lists (LUST) Twenty eight (28) listings (some duplicated) were reported within a one-half mile radius of the subject property. Of the 28 listings, 20 sites have been closed by a regulatory agency, and/or are located more than one-quarter mile of the subject property and are situated hydrologically cross- to down-gradient. Based on the relative distance, regulatory status, and/or inferred direction of groundwater flow; these sites are not expected to represent a significant environmental concern. Of the listings located within a one quarter mile of the subject property, it was determined that there were only six individual sites, due to dual database listings. Regarding these six listings, EEI reviewed the online database GeoTracker, which provides records on LUSTs, and Cleanup Program Sites, maintained by the State Water Resources Control Board (SWRCB), for more information regarding the case. The following is a summary of the information reviewed: A&D Compserv Service Station (2721 West Edinger Avenue, 0.16 miles northeast of the nearest portion of the subject property), reported a gasoline release in 1989 following the removal of seven USTs. The case was closed on June 19, 2014 by the SARWQCB. According to the closure review summary report, active soil and groundwater remediation was conducted between 2006 and The rational for closure included that the contaminant groundwater plume that exceeded water quality objectives was less than 100 feet in length, and the nearest water supply well or surface water body was greater than 250 feet from the defined plume boundary. The site was paved; therefore, accidental access to site soils was prevented. The summary report stated the depth to groundwater ranged between 6.60 feet to feet bgs. Groundwater flow direction was reported to be to the south, with an average hydraulic gradient of feet/foot (ft/ft). Given the relative distance of this site from the subject property, the location of the groundwater plume, the position cross gradient in respect to the groundwater flow direction from the subject property, and the closure of the case by an authorized lead agency, additional investigation of this site does not appear to be warranted at this time. Mobil (16230 Harbor Boulevard, 0.25 miles northwest of the nearest portion of the subject property) reported a gasoline release in September The case was closed on January 17, 2014 by the OCHCA. According to case closure summary report, there are 16 onsite monitoring wells and 6 off site monitoring wells. One of the six off site wells is located to the west of the site within Harbor Boulevard. The remaining five off site wells are located south of the site within Edinger Avenue. 9

17 According to a case closure summary, quarterly groundwater monitoring was most recently conducted on March 23, 2012 (ETIC, 1Q12 May 2). The summary stated that free product had been observed in one well (MW9/EW2) at the site at a maximum thickness of 0.08 feet and was last observed at the site in May First quarter 2012 groundwater samples contained the following maximum concentrations: 1,300 micrograms per liter (µg/l) total petroleum hydrocarbons as gasoline (TPHg), 7.8 µg/l benzene, 1.4 µg/l toluene, 0.37 µg/l ethylbenzene, 1.9 µg/l total xylenes, 28 µg/l MTBE, and 63 µg/l tertiary butyl alcohol (TBA). Post-remedial groundwater monitoring was conducted at site to monitor rebound and/or stability of remaining hydrocarbon concentrations in groundwater. Analytical results showed that overall dissolved phase hydrocarbon and fuel oxygenate concentrations in groundwater continued to decrease and were stable. Closure was recommended for reasons including that the contamination had been fully defined and was stable (or shrinking). The case closure summary indicated depth to groundwater ranged between 8.27 feet and feet bgs. Groundwater flow direction was reported to be to the south, southeast. Given the relative distance of this site from the subject property, the location of the groundwater plume, the position cross gradient in respect to the groundwater flow direction from the subject property, and the active management of the case by an authorized lead agency, additional investigation does not appear to be warranted. The remaining four LUST sites (located within one-quarter of mile from either the subject property); have been closed by the appropriate regulatory agency. Based on this information, and location (i.e. cross gradient in regards to groundwater flow direction), these listings do not appear to be an environmental concern. The four sites are summarized below: Edinger Property/Tailored Masonry (2619 West Edinger Avenue, 0.22 miles northeast of the nearest portion of the subject property), reported a gasoline release in 1992 during tank removal. The case was closed on April 13, 2004 by the SARWQCB. According to the case summary, no further action was recommended for reasons including: the lateral extent of contamination appeared to be limited within 15 feet from the former UST location. The summary report stated the depth to groundwater ranged between 9.78 feet to feet bgs. Groundwater flow direction was reported to be to the south-southwest. Unocal 5607 (11970 Edinger Avenue, miles southwest of the nearest portion of the subject property), reported a gasoline release in November Remediation including vacuum extraction, excavating, and treatment, was completed and the case was closed by the OCLOP on July 13, No other documents were available on GeoTracker. Exxon (16225 South Harbor Boulevard, 0.32 miles northwest of the nearest portion of the subject property), reported two gasoline releases, one in 1988 and one in Remediation was completed and the cases were closed by the OCLOP on September 29, 1992 and August 29, 1995, respectively. No other documents were available on GeoTracker. Newt Withers Goodyear (16142 Harbor Boulevard, approximately 0.27 miles northwest of the nearest portion of the subject property) reported a waste oil, motor, hydraulic lubricant release. No date of release was reported. Remediation including vacuum extraction, excavating, and treatment, was completed and the case was closed by the OCLOP on March 8, No other documents were available on GeoTracker. 10

18 State and tribal leaking storage tank lists (SLIC) Seven listings were reported within a one-half mile radius of the subject property. All seven listings have been closed by a regulatory agency, and/or are located more than one-eighth of a mile from the subject property and/or are situated hydrologically cross- to down-gradient. Based on the relative distance, regulatory status, and/or inferred direction of groundwater flow; these sites are not considered an environmental concern. State and tribal registered storage tank lists Five listings were reported within a one mile radius of the subject property. UST permits are not generally considered rationale for environmental concern unless the facility has a dual listing, such as a reported release. All five of these sites were dual listed with closed release cases under the LUST database. In addition, five sites are located greater than one-eighth of a mile from the subject property and/or are situated hydrologically cross- to down-gradient. Based on the relative distance, regulatory status, and/or inferred direction of groundwater flow; these sites are not considered an environmental concern. State and Tribal voluntary cleanup sites No listings were reported within a one-half mile radius of the subject property. Local Brownfield lists No listings were reported within a one-half mile radius of the subject property. Local Lists of Landfill/Solid Waste Disposal Sites (SWRCY) One listing was reported within a one mile radius of the subject property. The site, Money for Cans (2610 W. Edinger Avenue, 0.25 miles east of the nearest portion of the subject property), was listed as a recycling facility. Based on this information, the listing is not considered an environmental concern. Hazardous Waste/Contaminated Sites (SCH) One listing was reported within a one mile radius of the subject property. The site, New High School No. 5 (3000 W. Edinger Avenue), was dual listed on the ENVIROSTOR database above. The site is discussed below in Section DTSC. Facility Inventory Database (CA FID UST) Six listings were reported within a one-quarter mile radius of the subject property. Several of the sites were dual listed with closed release cases under the LUST database. In addition, all of the sites are located greater than one-eighth of a mile from the subject property and/or are situated hydrologically cross- to down-gradient. Based on the relative distance, regulatory status, and/or inferred direction of groundwater flow; these sites are not considered an environmental concern. Historical UST (HIST UST) Six listings were reported within a one-quarter mile radius of the subject property. Several of the sites were dual listed with closed release cases under the LUST database. In addition, all of the sites are located greater than one-eighth of a mile from the subject property and/or are situated hydrologically cross- to down-gradient. Based on the relative distance, regulatory status, and/or inferred direction of groundwater flow; these sites are not considered an environmental concern. Statewide Environmental Evaluation and Planning System (SWEEPS) Six listings were reported within a one-quarter mile radius of the subject property. All five listings were dual listed and discussed under other databases. 11

19 RCRA Non-Generator (NonGen/NLR) One listing was reported within a one-quarter mile radius of the subject property. NonGen listings do not currently generate hazardous waste; therefore, are not considered a concern. Facility Index System (FINDS) No listings were reported within a one quarter mile radius of the subject property. DTSC's Hazardous Waste and Substances Site List - Site Cleanup (CORTESE) No Longer Updated (Hist CORTESE) - Fourteen listings were reported within a one-half mile radius of the subject property. The listings were either dual listed and discussed under other databases, and/or are located more than one-eighth mile of the subject property and are situated hydrologically cross- to downgradient. Based on this information these sites are not considered an environmental concern. Drycleaners One listing was reported within a one quarter mile radius of the subject property. Family Cleaner (2710 W. Edinger Avenue, 0.10 miles east of the nearest portion of the subject property), was reported as located within the shopping center located east of S. Fairview Street. No violations were reported on the database. Based on the absence of a reported release and location (i.e. position cross to down gradient in respect to groundwater flow direction), this listing is considered an environmental concern. Hazardous Waste Manifests (HAZNET) One listing was reported within a one quarter mile radius of the subject property. Hazardous waste permits are not generally considered rationale for environmental concern unless the facility has a dual listing, such as a reported release. The site, Tracy Parkkinen (12183 West Edinger Avenue, approximately 0.03 miles northwest of the nearest portion of the subject property), was permitted as a hazardous waste generator in the year The waste category was not listed. The disposal method was listed as landfill or surface impoundment. The waste volume was listed as 0.4 tons. No other information was provided on the database; however, the listing appears to be related to the removal asbestos containing materials (ACMs) from the adjacent residence and is not considered a concern to the subject property. Hazardous Waste Permits (HWP) One listing was reported within a one-quarter mile from the subject property. Based on the location of the site (i.e. more than one-eighth mile of the subject property and/or are situated hydrologically cross- to down-gradient), this site is not considered an environmental concern. EDR US Historical Auto Station list Nine listings were reported within a one-quarter mile radius of the subject property. UST permits are not generally considered rationale for environmental concern unless the facility has a dual listing, such as a reported release. Two of the listings, Midas Auto Systems Experts (3085 W. Edinger Avenue) and Jiffy Lube (3087 W. Edinger Avenue), are located within 200 feet north of the subject property across W. Edinger Avenue. Neither site has reported a release under the LUST database. The remaining listings are located greater than one-eighth of a mile from the subject property. Based on the absence of a reported release, none of the aforementioned listings are considered an environmental concern. EDR US Historical Cleaners Nine listings were reported within a one-quarter mile radius of the subject property. Upon further review, EEI determined that the listings were either cleaning services, or coin operated laundromat businesses. Based on the nature of the business (i.e. not a dry cleaner), absence of a reported release and/or location (i.e. farther than one-eighth mile from the subject property and position down to cross-gradient in respect to groundwater flow direction), none of the aforementioned listings are considered an environmental concern. 12

20 Orphan Summary - The EDR database search report lists a number of sites identified as orphans. EDR was unable to confirm the physical locations of these sites relative to the subject property or to assess whether they were located within the designated search radii. EEI attempted to locate these orphan sites, to the extent possible, using various maps and our knowledge of the site area. Any of the orphan sites determined to be within the designated search radii were included in our evaluation of the various listed sites potential to result in a recognized environmental condition relative to the subject property. 3.4 Regulatory Agency Review City of Santa Ana Fire Department EEI contacted the City of Santa Ana Fire Departments (SAFD) for information regarding the subject area and nearby sites. The department indicated that they file their records by address; and as the subject property does not have a specific address, only a search for nearby addresses could be conducted. A staff member with the SAFD, with extensive knowledge of the site vicinity surrounding the subject property, indicated that he was not aware of any environmental concerns on the subject properties or adjacent property Orange County Fire Authority EEI contacted the Orange County Fire Authority (OCFA) concerning any permit, inspection, UST, or cleanup information available for the subject property. According to the OCFA, they recently (within the last few years) contracted to provide fire services to the City of Santa Ana. A written request was submitted requesting information on hazardous materials inventories, inspection reports, waste generating permits, spills, underground and/or above ground storage tanks, and/or site remediation plans for the subject property. According to a response letter from Ms. Robin Nelson-Glotfelty, with the OCFA, no records for the addresses associated with the subject property were found on file Orange County Health Care Agency EEI reviewed Orange County Health Care Agency (OCHCA) Environmental Health Departments online databases (OCHCA, 2013) including the Hazardous Waste Facilities, Industrial Cleanup program, Local Oversight Program (LOP), Non-petroleum Underground Storage Tanks, Underground Tank Facilities (UTF) Listing, and Aboveground Petroleum Storage Tanks, to determine if the subject property or any adjacent properties were listed as having an environmental concern. Hazardous Waste Facilities Database No listings were reported for the subject property or any adjacent property. Industrial Cleanup Program No listings were reported for the subject property or any adjacent property. Local Oversight Program (LOP) No listings were reported for the subject property or any adjacent property. 13

21 Non-Petroleum Underground Storage Tanks No listings were reported within a one-mile search radius of the subject property. Underground Tank Facilities (UTF) No listings were reported within a one-mile search radius of the subject property. Land Fill Sites No listings were reported within a one-mile search radius of the subject property Department of Toxic Substances Control EEI researched the Department of Toxic Substances Control (DTSC, 2015) regarding any records for the subject property. A site located within the Centennial Park property was identified on the database. The site, New High School No. 5 (3000 W. Edinger Avenue), was listed as a proposed school investigation site. The site was described as consisting of approximately 26 acres, surrounded by the Centennial Park and Rancho Santiago College to the north, residential properties to the east, and the Discovery Museum and light industrial facilities to the south and the west. According to the information reviewed, the listing, a proposed school site, was subject to an investigation in 2001, due to past usage as agricultural land (row crops). The information indicated that a Preliminary Endangerment Assessment was completed and on April 12, 2002, and the DTSC subsequently determined no further action was required at the site. Based on this information, this site did not appear to be an environmental concern in regards to the Santa Ana subject property. The report noted that this information indicated that the immediate vicinity of the Santa Ana subject property was historically utilized for agriculture. Based on the aforementioned investigation (and no further action status of the New High School No. 5), and the lack of any evidence to the contrary, the past use of the Santa Ana subject property, and/or adjacent property does not appear to represent an environmental concern State Water Resources Control Board EEI reviewed the online database GeoTracker (2015), which provides records on LUSTs and Spills, Leaks, Investigation and Cleanup (SLIC) sites, which is maintained by the State Water Resources Control Board (SWRCB). Neither the subject property nor any adjacent properties were identified on the GeoTracker database. Several nearby sites were listed as open LUST cases, and are discussed above under the LUST database in Section EEI did not request file reviews for sites previously identified as LUST sites, as information contained in the Geotracker online files contained sufficient information, in our opinion, for the purposes of this Phase I ESA. 14

22 3.4.6 Review of Division of Oil, Gas and Geothermal Resources Files Oil and gas wells were not observed on the subject property during our subject property reconnaissance. A review of the California Division of Oil, Gas, and Geothermal Resources Website for oil and gas fields in California and Alaska (CDOGGR, 2015) indicated no wells are located in the immediate vicinity of the subject property (identified as within Township 05 South Range 10 West Section 22) National Pipeline Mapping System EEI reviewed the National Pipeline Mapping System (NPMS, 2015) Public Map Viewer, published by the Pipeline and Hazardous Materials Safety Administration (PHMSA) to determine the possible presence of petroleum pipelines in the vicinity of the subject property. The NPMS Public Map Viewer allows the general public to view maps of transmission pipelines (natural gas and hazardous liquids), LNG plants, and breakout tanks in one selected county. Distribution and gathering systems are not included in NPMS. Based on a review of the NPMS Public Map Viewer, no pipelines are located in the vicinity of the subject property. 3.5 Interview with Current Property Owner EEI contacted the property owner, the City of Santa Ana, for information regarding the subject property. To obtain this information, EEI provided the owner representative with a questionnaire. Mr. Ron Ono, Administrative Services Manager, with the City of Santa Ana, completed the interview regarding this property. Information provided by Mr. Ono is documented below Past or Present Uses Indicating Environmental Concerns Mr. Ono stated that the subject property is currently a City park site with portions leased to the Santa Ana Unified School District and the Santa Ana College. He stated that past use of the property was as a Federal Communication site. Mr. Ono was not aware of any past or present uses of the property indicating environmental concern. Mr. Ono noted that an offsite gas station site, A&D Compserv and MiniMart (2721 West Edinger Avenue, located approximately 0.16 miles northeast of the subject property), reported a gasoline release in 1989 that was monitored and mitigated. A detailed review of the aforementioned release case was presented above in Section State and Regional Sources LUST database Deed Restrictions, Environmental Liens or Governmental Notifications Mr. Ono stated that the property deed requires the property to be used for recreational purposes. He added that he was not aware of any environmental liens or governmental notification relating to past or recurrent violations of environmental laws with respect to the property or any facility located on the property Presence of Hazardous Substances or Environmental Violations Mr. Ono stated that he is not aware of any hazardous substances or environmental violations on the subject property. 15

23 3.5.4 Previous Assessments Mr. Ono stated that he is not aware of any previous assessments conducted on the subject property Legal Proceedings Mr. Ono stated that he is not aware of any past, threatened, or pending lawsuits or administrative proceedings concerning a release or threatened release of any hazardous substance or petroleum products involving the property by any owner or occupant of the property. 3.6 User Specific Information Pursuant to ASTM E , EEI provided a Phase I ESA User Specific Questionnaire to the user (the person on whose behalf the Phase I ESA is being conducted), Mr. Daniel Bott, Principle Planner with the OCWD. In this case, Mr. Bott declined to complete the form, and instead defaulted to the property owner to provide the information. Pertinent information provided by the property owner representative, Mr. Ron Ono with the City of Santa Ana, regarding the subject property is documented above in Section 3.5 Interview with the Current Property Owner. No indications of environmental concern were noted by Mr. Ono (see above). A list of the user specific questions (per ASTM E ) is included in Appendix E. 3.7 Previous Assessments Based on the information provided by the client, OCWD, a previous site assessment has been conducted on the subject property by EEI. The following section summarizes EEI s previous assessment EEI, Environmental Database Review, Mid-Basin Injection Well Project Area, Cities of Santa Ana, California 92704, and Fountain Valley, California 92708, EEI Project No. MBA , dated June 19, EEI conducted the above referenced report for Michael Brandman Associates, to assess the possible presence of environmental release sites in the area of the OCWD Mid-Basin Injection Well Project Area, which included the Fountain Valley portion of the subject property (i.e. APN ). The proposed project involved the construction and operation of a mid-basin injection well and monitoring well on a site within the City of Fountain Valley and the construction and operation of a mid-basin monitoring well on a site within Centennial Park in the City of Santa Ana. The purpose of the Environmental Database Review was to provide conclusions regarding nearby environmental release sites that may be of concern. The City Fountain Valley portion of the project included a mid-basin injection well and monitoring well proposed for a 6,000 square foot site, near the intersection of Edinger Avenue and its crossing of the Santa Ana River within the City of Fountain Valley. The project site was owned by the Orange County Flood Control District. The site was undeveloped and used at the time as a staging area by OCFD and the US Army Corps of Engineers to support maintenance activities along the Santa Ana River. The project site was situated within an urban setting and surrounded by developed land uses. To the west of the project site was an existing single story residence, which fronted the access road that led to the project site. The side yard of the residence was approximately 10 feet from the project site. To the north of the project site was an existing single residence and equestrian stable. The side yard of the residence was approximately 10 feet from the project site. 16

24 The City of Santa Ana portion of the project included a mid basin injection monitoring well proposed for a 6,000 square foot open construction site located in southwestern end of Centennial Park. Centennial Park was described as a 70-acre City Park that featured a man-made lake, and active and passive recreation facilities. Centennial Park was formerly owned by the United States Department of Interior prior to having been conditionally deeded to the City of Santa Ana. The deed included a condition which required coordination with US Department of Interior for any non-park uses proposed in Centennial Park. The proposed monitoring well would be constructed in a passive area of the park between a man-made lake feature and soccer fields. A park perimeter road would provide internal park access to the site. The operation and maintenance of the monitoring well would not interfere with recreational activities at Centennial Park. The report included a review of database listings for possible hazardous waste generating establishments in the vicinity of the site, as well as on sites in the area with known environmental concerns. One site was identified within the immediate vicinity of Centennial Park. The site, New High School No. 5 aka Godinez High School at Centennial Park (3000 West Edinger, approximately 0.26 miles southeast of the Fountain Valley site and 0.06 miles southeast of the Santa Ana site). As the school was located further than one-quarter mile from the Fountain Valley site; it was not considered an environmental concern to that specific subject property. In regards to the Santa Ana subject property, the school property boundary was determined to be located approximately 0.06 or 330 feet southeast, across the Centennial Park man-made lake from the property. According to the information reviewed, the listing, a proposed school site, was subject to an investigation in 2001, due past usage as agricultural land (row crops). The information indicated that a Preliminary Endangerment Assessment was completed and on April 12, 2002, and the DTSC subsequently determined no further action was required at the site. Based on this information, this site did not appear to be an environmental concern in regards to the Santa Ana subject property. The report noted that this information indicated that the immediate vicinity of the Santa Ana subject property was historically utilized for agriculture. Based on the aforementioned investigation (and no further action status of the New High School No. 5), and the lack of any evidence to the contrary, EEI stated that it did not appear that the past use of the Santa Ana subject property, and/or adjacent property represented an environmental concern. The database review also revealed a nearby release site, Mobil (16230 Harbor Boulevard, approximately 0.17 miles (898 feet) west of the Fountain Valley site and 0.33 miles northwest of the Santa Ana site) where a gasoline release was reported in September At the time of the database review (i.e. 2009), groundwater monitoring, sampling and closure evaluation was being conducted at the site. EEI reviewed a groundwater monitoring report and related isoconcentraion maps for TPH-g, Benzene and MtBE, and TBA (ETIC, 2009). According to the maps, concentrations of Benzene, MTBE and TBA contaminants had been defined to the south and east, and appeared to have been limited to the Mobil property and the immediate vicinity. TPH-g remained undefined to the south; however, concentrations were low enough that it was unlikely that the plume reached far enough to impact the project sites. Based on the data reviewed, the edge of the plume was approximately 930 feet west of the Santa Ana project site boundary. During a first quarter 2009 monitoring event, depth to groundwater averaged at feet bgs. Groundwater flow direction was reported to be to the south, with a hydraulic gradient of feet/foot. EEI stated that given the relative distance of this site from the subject property, the location of the groundwater plume, the position cross gradient in respect to the groundwater flow direction from the subject property, and the active management of the case by an authorized lead agency, additional investigation did not appear to be warranted. EEI notes that this release case was closed by the OCHCA on January 17,

25 Three additional release sites were identified during the database search (located within one-quarter of mile from the Fountain Valley subject site), which had been closed by the OCLOP. Based on this information, and location (i.e. cross gradient in regards to groundwater flow direction), these listings did not appear to be an environmental concern to either the Fountain Valley or Santa Ana subject sites. In addition, EEI contacted both the City of Fountain Valley and City of Santa Ana Fire departments (FVFD and SAFD, respectively), and the OCHCA, for information regarding the subject area and nearby sites. The agencies indicated that there were no listings for the subject property or any properties within the immediate site vicinity on their respective databases. EEI concluded that based strictly on a review of available environmental database and other, readily accessible regulatory information, there was no evidence of existing environmental concerns related to a release of hazardous substances or petroleum products on the either the subject property or any adjacent properties. 3.8 Other Environmental Issues Asbestos-Containing Materials Asbestos, a natural fiber used in the manufacturing of a number of different building materials, has been identified as a human carcinogen. Most friable (i.e., easily broken or crushed) Asbestos- Containing Materials (ACM) were banned in building materials by By 1989, most major manufacturers had voluntarily removed non-friable ACM (i.e., flooring, roofing, and mastics/sealants) from the market. These materials, however, were not banned completely. An ACM survey was not conducted at the subject property as part of this Phase I ESA. The subject property consists of property owned by the City of Santa Ana and the County of Orange, and no permanent structures are located on the property. Therefore, the presence of asbestos-containing materials is not considered a concern Lead-Based Paint Lead-Based Paint has been identified by Occupational Safety and Health Administration (OSHA), the United States Environmental Protection Agency (U.S. EPA) and the Department of Housing and Urban Development (HUD) as being a potential health risk to humans, particularly children, based on its effects to the central nervous system, kidneys, and bloodstream. The risk of Lead-Based Paint has been classified by HUD based upon the age and condition of the painted surface. This classification includes the following: maximum risk is from paint applied before 1950; a severe risk is present from paint applied before 1960; a moderate risk is present from paint applied before 1970; a slight risk is present from paint applied before 1977; and paint applied after 1977 is not expected to contain lead. The subject property consists of property owned by the City of Santa Ana and the County of Orange, and no permanent structures are located on the property. Therefore, the presence of lead-based paint is not considered a concern. 18

26 3.8.3 Radon Radon is a radioactive gas which has been identified as a human carcinogen. Radon gas is typically associated with fine-grained rock and soil, and results from the radioactive decay of radium. The U.S. EPA recommends that homeowners in areas with radon screening levels greater than 4 Picocurries per liter (pci/l) conduct mitigation of radon gas to reduce exposure. Sections 307 and 309 of the Indoor Radon Abatement Act of 1988 (IRAA) directed the U.S. EPA to list and identify areas of the U.S. with the potential for elevated indoor radon levels. U.S. EPA s Map of Radon Zones (EPA-402-R ) assigns each of the 3,141 counties in the U.S. to one of three zones based on radon potential: Zone 1 counties have a predicted average indoor radon screening level greater than 4 pci/l. Zone 2 counties have a predicted average indoor radon screening level between 2 and 4 pci/l. Zone 3 counties have a predicted average indoor radon screening level less than 2 pci/l. Based on such factors as indoor radon measurements, geology, aerial radioactivity, and soil permeability; the U.S. EPA has identified Orange County as Zone 3 (i.e., low potential for radon gas). EEI does not consider radon as a significant environmental concern at this time. 4.0 SITE RECONNAISSANCE 4.1 Purpose The purpose of our site reconnaissance was to physically observe the subject site, site structures, and adjoining properties for conditions indicating an existing release, past release, or threatened release of any hazardous substances or petroleum products into structures on the subject site, or into soil and/or groundwater beneath the subject property. This would include any evidence of contamination, distressed vegetation, petroleum-hydrocarbon surface staining, waste drums, USTs, ASTs, illegal dumping, or improper waste storage/handling. Detailed information pertaining to our site reconnaissance is provided in the text below. 4.2 Subject Site On April 9, 2015, EEI personnel conducted a site reconnaissance to visually observe the subject property and adjoining properties for conditions indicating a potential environmental concern. Visual conditions present during the site reconnaissance are documented in the Photographic Log (Appendix F), and summarized in Table 2. The subject property comprises the Orange County Water District Mid-Basin Injection Well Project, located within the vicinity of Centennial Park, in the City of Santa Ana, California (Figure 2). The Mid-Basin Injection Well Project consists of installing four groundwater injection wells and related underground piping for future water district purposes. This Phase I ESA focuses on the proposed well locations and the connecting underground piping network. EEI staff accessed the site by vehicle along Edinger Avenue, and mobilized to the parking lot in the northwestern region of Centennial Park. From there, staff walked the site from the northern to southern portions of the proposed pipeline route. 19

27 EEI began the reconnaissance at the northwest corner of the project site, at the intersection of Edinger Avenue and the Santa Ana River overpass. From this location, EEI continued the site reconnaissance walking east, along portions of the pipeline route parallel to Edinger Avenue. EEI entered north side entrance to Centennial Park at Edinger Avenue, and continued along the proposed pipeline route, which roughly parallels the parks perimeter access road. EEI traversed the asphalted parking lots, and grass fields within Centennial Park and observed the four proposed injection well locations within parking areas at the northwest, northeast, southwest, and southeast portions of the park. Features within the park included baseball fields, soccer fields, a track, a skateboard park; a large pond, a portion of Godinez High School, and an adult education facility were noted within Centennial Park. No overhead power lines were noted during the site reconnaissance. However, staff noted one pad mounted transformer, located in the east-central region near the proposed pipeline route. EEI staff noted insignificant amounts of windblown debris scattered throughout the park. The subject property consists of a mix of developed sidewalks along the margins of Edinger Avenue, asphalt paved access drives and parking lots with Centennial Park, and several areas of native and/or landscaped vegetation where the route crosses open fields within the park area. No evidence of contamination, distressed vegetation, petroleum-hydrocarbon surface staining, waste drums, USTs, ASTs, illegal dumping, or improper waste storage/handling was noted during our site reconnaissance. Item TABLE 2 Summary of Site Reconnaissance Observed Comments Concerns General Housekeeping No No concerns observed. Surface Spills No No concerns observed. Stained Surfaces No No concerns observed. Fill Materials No No concerns observed. Pits/Ponds/Lagoons No No concerns observed. Surface Impoundments No No concerns observed. ASTs/USTs No No concerns observed. Distressed Vegetation No No concerns observed. Wetlands No No concerns observed. Electrical Substations No No concerns observed. Areas of Dumping No No concerns observed. Wells/Oil Wells/Mud Pit No No concerns observed. Transformers/Light Fixtures No One (1) pad mounted transformer was noted within Centennial Park along the east-central region of the proposed pipeline route, adjacent to the skateboard park and baseball fields. Waste/Scrap Storage No No concerns observed. Chemical Use/Storage No No concerns observed. 20

28 4.3 Adjacent Properties On April 9, 2015, EEI personnel conducted an auto reconnaissance of the site vicinity (to the extent possible) to evaluate the potential for offsite environmental conditions that could affect the subject property. These environmental conditions include evidence of chemical storage or usage, surface staining or leakage, distressed vegetation, or evidence of dumping. The subject property is located within an area of mixed residential and commercial/light industrial development within the southwest portion of the City of Santa Ana within the immediate vicinity of Centennial Park. The park property is immediately bound by West Edinger Avenue to the north, the Godinez High School along with commercial/light industrial development along Castor Street and West Harvard Street to the south, South Fairview Street to the east, and the Santa Ana River Channel to the west. No adjacent sites were listed as having a documented release, nor was visual evidence of past or present releases, chemical storage, waste drums, surface spills, or underground storage tanks noted. The nearby sites located within a one-eighth mile radius of the subject property, listed as release sites and/or sites of potential concern were discussed above in Section 3.3 Regulatory Database Search and are not repeated here. 5.0 VAPOR ENCROACHMENT SCREEN ASTM Standard E Standard Guide for Vapor Encroachment Screening (VES) on Property Involved in Real Estate Transactions was used as guidance for conducting a VES for the subject property. The purpose of the screening is to determine whether a Vapor Encroachment Condition (VEC) exists from chemicals of concern (COC) that may migrate as vapors onto a property as a result of contaminated soil and groundwater on or near the subject property. The screening involves a two tiered approach to assessing VEC risk as described below. The VES process includes a review of site conditions (e.g., aerial photographs, city directories, and environmental database information), which is information typically collected during a Phase I ESA, user provided information, and in some instances the use of a third-party vapor encroachment application. The following sections describe the VES performed on the subject property. 5.1 Site Conditions According to the 7.5 Minute Newport Beach Quadrangle map (USGS, 1981), the elevation of the subject property ranges from approximately 45 feet amsl at the southeast portion to approximately 65 feet amsl at the northwest portion. In general, surface drainage in the immediate site vicinity appears to be to the south towards the lower elevations. The east levee of the Santa Ana River Channel (concrete lined) abuts the eastern margin of the Centennial Park property. The river channel generally trends in a northeast to southwest direction. Soils beneath the site vicinity have been identified by the USDA-NRCS (USDA, 2015) as belonging to the Metz (loamy sand). The Metz series consists of very deep, somewhat excessively drained soils that formed in alluvial material from mixed, but dominantly sedimentary rocks. Metz soils are on floodplains and alluvial fans and have slopes of 0 to 15 percent. These soils have negligible to slow runoff; and moderately rapid permeability. In addition, the pipeline crosses the Santa Ana River channel which is identified by the USDA as Riverwash (USDA, 2015). 21

29 Data obtained from the GeoTracker website (SWRCB, 2015), regarding an environmental cleanup case related to the A & D Compserv Service Station (2721 W. Edinger Avenue; 0.16 miles northeast of the nearest portion of the subject property), reported depth to groundwater in 2012, to be between 6.52 feet and feet bgs, and the groundwater gradient and flow direction was reported to be feet/foot to the south (Ninyo and Moore). EEI researched additional nearby release case information on the GeoTracker website (i.e., cases within a one-quarter mile radius from the subject property) for additional groundwater gradient data. According to the information reviewed, the groundwater gradient in the immediate site vicinity appears to be in a south to southwesterly direction. 5.2 User Provided Information To assist EEI in the completion of the VES, we requested the completion of a Vapor Encroachment Screen - User Questionnaire from, Mr. Daniel Bott, Principal Planner with OCWD. In this case, Mr. Bott declined to complete the form, and instead defaulted to the property owner to provide the information. Given this, the VES -User Questionnaire was completed by the property owner representative, Mr. Ron Ono, Administrative Services Manager, with the City of Santa Ana and the information provided is documented below. A list of the VES - User specific questions (per ASTM E ) with associated responses is included in Appendix G. The questionnaire provided basic information regarding the use, condition, and proposed development of the subject property. According to Mr. Ono the subject property consists of Park Space property and Public Right Away undergoing a well and pipeline installation project. Mr. Ono indicated that there are no buildings constructed on the subject property. According to Mr. Ono he does not know of any reported instances of gas stations, cleaners, odors, chemicals, storage tanks or health concerns reported on the property. 5.3 Tier 1 Screening Search Distance Test/Chemicals of Concern A Tier 1 Screening includes the search distance test that involves a review of the regulatory database report and available historical records obtained during the Phase I ESA process to make a determination if any known or suspect potentially contaminated properties exist within the Area of Concern (AOC). High risk sites are typically current and former gas stations, former and current dry cleaners, manufactured gas plants, and industrial sites (Brownfields). The AOC is defined as any up gradient sites within the ASTM E standard search distances and any cross or down gradient sites within 1/3 mile for solvents and petroleum products. If the contamination at the known or potentially contaminated sites within the AOC consists of Chemicals of Concern (COCs), then a potential Vapor Encroachment Condition (pvec) exists, and further evaluation is recommended. If no known or potentially contaminated sites with COCs exist within the AOC, no further inquiry is necessary. Based on EEI s Tier 1 Screening evaluation, no sites were identified within the AOC that were considered to pose a pvec at the subject property. 5.4 Findings Based on the results of the Tier 1 VES, EEI concluded that a pvec can be ruled out, due to the lack of known or suspected contaminated properties within the Area of Concern (AOC). 22

30 6.0 FINDINGS AND OPINIONS Based on the information obtained in this ESA, EEI has the following findings and opinions: Known or suspected RECs are defined by the ASTM Standard Practice E 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 that pose a material threat of a future release to the environment. No known or suspected RECs have been revealed during the preparation of this ESA: Controlled RECs (CRECs) are defined by the ASTM Standard Practice E as a REC resulting from a past release of hazardous substances or petroleum products that has been addressed to the satisfaction of the applicable regulatory authority (e.g., as evidenced by the issuance of a NFA letter or equivalent, or meeting risk-based criteria established by regulatory authority), with hazardous substances or petroleum products allowed to remain in place subject to the implementation of required controls (e.g., property use restrictions, AULs, institutional controls, or engineering controls) No CRECs have been revealed during the preparation of this ESA. Historical Recognized Environmental Conditions (HRECs) are defined by the ASTM Standard Practice E as a past release of any hazardous substances or petroleum products that has occurred in connection with the property and has been addressed to the satisfaction of the applicable regulatory authority or meeting unrestricted residential use criteria established by a regulatory authority, without subjecting the property to any required controls (e.g., property use restrictions, AULs, institutional controls, or engineering controls). No HREC s have been revealed during the preparation of this ESA. De Minimis Conditions include environmental concerns identified which may warrant discussion but do not qualify as RECs, as defined by the ASTM Standard Practice E No de minimis conditions were identified during the preparation of this ESA. 7.0 DATA GAPS AND DEVIATIONS FROM ASTM PRACTICES Section (ASTM ) defines a data gap as a lack or inability to obtain information required by the practice despite good faith efforts of the environmental professional to gather such information. 7.1 Historical Data Gaps Based on the information obtained during the course of this investigation, the following historical data gaps were encountered. Specific Gaps The current and past owners of the subject property were unavailable; therefore, this historical source was not researched. 23

31 Resolution Efforts EEI researched historic topographic maps, historic aerial photographs, and internet research to supplement historical information. Opinions on Data Gap Significance Based on the information gathered from readily available sources, EEI does not consider the absence of this interview to effect the validity of this Phase I ESA. 7.2 Regulatory Data Gaps Based on the information obtained during the course of this investigation, no regulatory data gaps were encountered. 7.3 Onsite Data Gaps Based on the information obtained during the course of this investigation, no onsite data gaps were encountered. 7.4 Deviations from ASTM Practices Section (ASTM ), states that all deletions and deviations from this practice shall be listed individually and in detail, including Client imposed constraints, and all additions should be listed. EEI believes that there are no exceptions to, or deletions from, the ASTM Designation E Guidelines. 8.0 CONCLUSIONS We have performed a Phase I Environmental Site Assessment in conformance with the scope and limitations of ASTM Practice E for the property in the area of the Orange County Water District Mid-Basin Injection Well Project, located within the vicinity of Centennial Park, in the City of Santa Ana, Orange County, California, the subject property. Any exceptions to, or deletions from, this practice are described in Section 7.0 of this report. This assessment has revealed no evidence of recognized environmental conditions in connection with the subject property. 24

32 9.0 REFERENCES California Division of Mines and Geology (CDMG), 2002 California Geological Survey, California Geomorphic Provinces Note 36, Electronic Copy, Revised December California Department of Toxic Substances (DTSC), Website ( EnviroStor database, accessed April California Department of Water Resources, Water Data Library (WDL), Website ( accessed April California Division of Oil, Gas, and Geothermal Resources (CDOGGR) website, Oil and Gas Maps District 1, accessed April City of Santa Ana, 2014, Planning and Building Agency, Online Services website, accessed April ETIC Engineering (ETIC), Groundwater Monitoring Report, First Quarter 2009 (1Q09), Mobil , Harbor Boulevard, dated February 27, ETIC, Groundwater Monitoring Report, First Quarter 2012 (1Q12), Mobil , Harbor Boulevard, dated May 2, Federal Emergency Management Agency (FEMA) website, ( accessed April Hart, E.W., and Bryant, W.A., 1997, Fault-rupture hazard zones in California: California Department of Conservation, Division of Mines and Geology, Special Publication 42. National Pipeline Mapping System (NPMS), Public Map Viewer Website, ( accessed April Ninyo and Moore, 2012 Semi-Annual Groundwater Monitoring Report, A&D Compserv Gasoline Station, 2721 West Edinger Avenue, Santa Ana, California, dated April 13, Santa Ana Regional Water Quality Control Board (SARWQCB), Region 9, 1994, Water Quality Control Plan, Santa Ana Region: California State Water Resources Control Board Publication. State Water Resources Control Board, Website, GeoTracker database, ( accessed April United States Department of Agriculture (USDA), Natural Resources Conservation Center, Website, Web Soil Survey ( accessed April United States Geological Survey (USGS), 1981, 7.5' Topographic Map, Newport Beach, California Quadrangle. 25

33 FIGURES

34 SITE LOCATION Map Source: USGS, Newport Beach, California 7.5 Minute Quadrangle map (USGS, 1981) LEGEND Scale: 1" = 1,800' 0 1,080FT 1,800FT 3,600FT Note: All Locations Are Approximate SITE LOCATION MAP Orange County Water District Mid-Basin Injection Well Project Centennial Park City of Santa Ana, Orange County, California Created April 2015 FIGURE 1

35 MIB-10 SAR-10 West Edinger Avenue Santa Ana River SAR-11 Centennial Park Centennial Educational Center South Fairview Street West Centennial Road Source: Google Earth, Image Date: April 23, 2014; OCWD Mid-Basin Injection Well Project Centennial Park MIB-10 LEGEND Proposed Pipeline Segment Proposed Injection Well Site Existing Demonstration Injection Well Site Scale: 1" = 300' FT 300 FT 600 FT AERIAL SITE MAP Orange County Water District Mid-Basin Injection Well Project City of Santa Ana, Orange County, California Created May 2015 SAR-11 Existing Groundwater Monitoring Well Note: All Locations Are Approximate FIGURE 2