10179096_2103 S. GRAND - Plan (2)

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REMEDIAL ACTION PLAN FOR SOIL IMPACTED BY COPPER FORMER CIRCUIT ONE 2103 S. GRAND AVENUE, SANTA ANA, CALIFORNIA 1.0 INTRODUCTION This report provides the Remedial Action Plan (RAP) for the soil that is impacted by copper at the Former Circuit One (the Site) located at 2103 S. Grand Avenue, Santa Ana, California. The Site vicinity is shown on Figure 1. The Site location is shown on Figure 2. The purpose of this RAP is to summarize the environmental condition related to the copper contamination at the Site and to outline the proposed remediation activities. The RAP defines the contamination, remedial action objectives, remediation goals and the scope of the tasks that will be conducted to remediate the soil impacted by copper. The subsurface soil beneath the Former Circuit One Facility is impacted by volatile organic chemicals (VOCs), specifically, trichloroethene (TCE), and copper. There is no indication that the groundwater beneath the site is impacted by copper. These contaminants are believed to be from the former use of the Site for circuit board manufacturing. This RAP is prepared to addresses remediation of the soil impacted by copper. 2.0 BACKGROUND This section provides the site description, site history, site geology and hydrogeology ·and previous investigations and extent of contamination. 2.1 Site Description The Site is located at 2103 S. Grand Avenue in the City of Santa Ana, California (Figure 2). It is situated on the northerly parcel identified as Parcel 1 on the Record Survey dated May 1993 and recorded in Book 46, Page 22 of the Records of Survey of Orange County, and also shown on a Map filed in Book 65, page 37 of Records of Survey of Orange County. The site is a part of Assessor Parcel Number (APN) 014-173-05. A copy of the APN map is included in Appendix A. Industrial plaza has an area of approximate 9.3687 acres. As shown on Figure 2, there are 15 buildings in the plaza. The buildings are tilt-up construction. The plaza includes a number of suites that are used for storage, metal part manufacturing and many other commercial/industrial uses. 2.2 Site History The property that comprised the three parcels was acquired by North, Central and South, Inc. in May 1963 (GeoRemdiation, Inc. [GRI] 1992). Prior to this transaction, the land was used for agricultural purposes. The three separate legal parcels were acquired by Industrial Plaza LP from Warner Properties Inc., Warner Central Properties Inc. and Warner South Properties Inc. on May 17, 1971. By December 1963, construction of two buildings on the property at 2101-2115 S. Grand and 2117-2127 S. Grand had been completed. Between January 1964 and March 1970, a variety of general industrial uses occupied the Site. The premises at 2103 S. Grand and adjacent suites at 2101 and 2105 S. Grand were utilized for circuit board manufacturing from April 1970 to February 1990. The most recent occupant of 2103 S. Grand was Circuit One, a division of L.H. REMEDIATION SCIENCES 1