Phase I Environmental Site Assessment

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Phase I Environmental Site Assessment December 20, 2012 San Francisco HQ Atlanta PHASE I ENVIRONMENTAL SITE ASSESSMENT Chicago Dallas Property Identification: Edgewater Park Plaza 7700 Edgewater Drive Oakland, Alameda County, California 94621 Denver AEI Project No. 315265 Irvine Prepared for: Los Angeles CCIG 300 Frank Ogawa Plaza, Suite 340 Oakland, California 94612 Miami Prepared by: New York AEI Consultants 2500 Camino Diablo Walnut Creek, California 94597 (925) 746-6000 Phoenix Portland San Jose PROJECT SUMMARY Edgewater Park Plaza 7700 Edgewater Drive, Oakland, Alameda County, California Report Section No REC HREC BER Recommended Action Further Action 2.1 Current use of X subject property 2.2 Adjoining X property information 3.1 Historical X X Summary 4.0 Regulatory X X Agency Records Review 5.0 Regulatory X Database Records Review 6.3 Previous Reports X X 7.0 Site Inspection X and Reconnaissance 7.2.1 Asbestos- X X Containing Materials 7.2.2 Lead-Based Paint X X 7.2.3 Radon X 7.2.4 Lead in Drinking X Water 7.2.5 Mold X Project No. 315265 December 20, 2012 Page i EXECUTIVE SUMMARY AEI Consultants (AEI) was retained by CCIG to conduct a Phase I Environmental Site Assessment (ESA), in general conformance with the scope and limitations of ASTM Standard Practice E1527-05 and the Environmental Protection Agency Standards and Practices for All Appropriate Inquiries (40 CFR Part 312) for the property located at 7700 Edgewater Drive in the City of Oakland, Alameda County, California. Any exceptions to, or deletions from, this practice are described in Section 1.3 of this report. PROPERTY DESCRIPTION The subject property, which consists of four office buildings, is located on the northeast side of Edgewater Drive in a commercial area of Oakland, California. The property totals approximately 10.6 acres and is improved with four two-story wooden frame, slab-on-grade buildings totaling approximately 204,616 square feet. The subject property is currently occupied by several tenants that use the property for administrative and educational purposes. In addition to the subject property buildings, the property is improved with courtyards, asphalt-paved parking areas, and landscaped areas. During the site reconnaissance, three 55-gallon drums of a non-acid disinfectant bathroom cleaner were observed in a janitorial storage area. No environmental concerns associated with the storage and/or use of these materials were noted during the site reconnaissance or during the review of regulatory records. Please refer to Section 7.1 for additional information. The subject property was developed with the current improvements from 1971 through 1973. Prior to the current site improvements, the subject property was undeveloped marshland that was filled with imported soils in the late 1940s or 1950s. The property was vacant until development of the current office complex in the early 1970s. Since construction, the current office plaza has been occupied for use as offices and educational facilities. No historical tenants suspected of using hazardous materials were identified. Contamination identified in the fill materials is discussed in the Findings segment below. The subject property was not identified during the regulatory database search. The immediately surrounding properties consist of the following: Direction from Site Address-Tenant/Use Northwest Drainage channel followed by Raimin Instrument LLC (7500 Edgewater Drive) Southeast BIR Polymers, Inc. (7750 Edgewater Drive) D.M. Figley Co. Inc. (463-465 Roland Way) Multi-tenant industrial (469-475 Roland Way) Northeast Key Source International (7711 Oakport Street) Multi-tenant industrial (7717-7723 Oakport Street) Hertz Equipment Rental (7727 Oakport Street) Southwest Edgewater Drive followed by: Office building (7699 Edgewater Drive) State of California building (7717 Edgewater Drive) The adjacent site to the northeast at 7727 Oakport Street was listed in the regulatory database as a Leaking Underground Storage Tank (LUST) site, an Alameda County Contaminated Sites (Alameda County CS) site, and on several historical underground storage tank (UST) databases Project No. 315265 December 20, 2012 Page ii (HIST CORTESE, CA FID UST, SWEEPS UST, HIST UST). These listings are further discussed in Section 5.1. Based upon topographic map interpretation, the direction of groundwater flow beneath the subject property is inferred to be to the west. Based on groundwater monitoring data for the nearby site at 7101 Edgewater Drive, groundwater is presumed to be present at an estimated depth of less than 15 feet below ground surface (bgs). FINDINGS Recognized Environmental Conditions (RECs) are defined by the ASTM Standard Practice E1527- 05 as the presence or likely presence of any hazardous substances or petroleum products on a property under conditions that indicate an existing release, a past release, or a material threat of a release of any hazardous substances or petroleum products into structures on the property or into the ground, groundwater, or surface water of the property. AEI’s assessment has revealed the following RECs associated with the subject property or nearby properties: A subsurface investigation was performed at the subject property in 1991, during which 19 soil borings were advanced in the northern parking lot at depths ranging from 2.5 to 6.5 feet below ground surface (bgs). Analysis of these samples indicated up to 1,600 parts per million (ppm) total petroleum hydrocarbons as motor oil (TPHmo). A groundwater monitoring well was installed and sampled for the presence of TPHmo and BTEX (benzene, toluene, ethylbenzene and xylenes). Very low levels of TPHmo and no detectable levels of BTEX were identified in the well. Further work was requested by the Alameda County Department of Environmental Health Services (ACDEHS) to delineate the extent of the contamination and determine if the source was from 7700 Edgewater Drive. Additional subsurface investigation at the subject property and approximately 50 feet north of the subject property revealed higher levels of TPHmo in both soil and groundwater in the sample locations to the north. In 1991, the consultant proposed to the ACDEHS that the source of the contamination was from the fill materials brought onsite and not from onsite activities at 7700 Edgewater Drive. The ACDEHS concurred with this assessment, and stated that there was no guideline policy available from the Regional Water Quality Control Board (RWQCB) regarding contaminated bay fill. No further work was required in the absence of a guideline policy for contaminated fill. Historical Recognized Environmental Conditions (HRECs) are defined by the ASTM Standard Practice E1527-05 as an environmental condition which in the past would have been considered a recognized environmental condition, but which may or may not be considered a recognized environmental condition currently. AEI’s assessment has revealed the following HRECs associated with the subject property or nearby properties: • No on-site HRECs were identified during the course of this assessment. De Minimis Environmental Conditions include environmental concerns identified by AEI that warrant discussion but do not qualify as RECs, as defined by the ASTM Standard Practice E1527-05. AEI’s assessment has revealed the following de minimis environmental conditions associated with the subject property or nearby properties: • No on-site de minimis environmental conditions were identified during the course of this assessment. Project No. 315265 December 20, 2012 Page iii Business Environmental Risks (BERs) include risks which can have a material environmental or environmentally-driven impact on the business associated with the current or planned use of the subject property, not necessarily limited to those environmental issues required to be investigated in the standard ASTM scope. BERs may affect the liabilities and financial obligations of the client, the health & safety of site occupants, and the value and marketability of the subject property. AEI’s assessment has revealed the following BERs associated with the subject property or nearby properties: • Two historical occupants of the subject property, JKD Printing Service in 1990 and Mr. Copy Smart Document Solutions, Oakland, in 2010 appear to have been printing facilities. Printing operations can pose an environmental concern based on the historical use of solvents, metal-containing inks, and photo development chemicals employed during these activities. However, no hazardous material usage has been reported to the oversight agencies for the subject property, and the scale of printing operations within these businesses is expected to have been small. Further, no drains or other potential subsurface conduits were noted or reported within the subject property buildings, with the exception of within the bathroom areas. Based on this information and the relatively short duration of occupancy of each business, these historical occupants are not expected to constitute a significant environmental concern. • The subject property was inspected for the presence of asbestos-containing materials (ACMs) in 1990. Tested areas included roofs, tenant improvements (taping and joint compound), fire doors, and 12” floor tiles. ACMs were identified in roofing materials, fire door insulation, and floor tile mastic. An asbestos abatement was performed in 1990 and 1991. Asbestos-containing floor tiles and spray-on ceiling material from the first floor bathrooms and the second floor corridor areas was removed in February, 1991, and approximately
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