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the north. A parcel not included in this Property is located between the Property's
<br /> northern boundary and East Lafayette Street. The Property is also generally described
<br /> as San Joaquin County Assessor's Parcel No.(s): 149-261-09 through -17 and 149-262-
<br /> 01 through -19.
<br /> 1 .02. The Property has been assessed by the Department under a Voluntary
<br /> Cleanup Agreement (Docket No. HSA-VCA 09/10 — 005) with the City of Stockton
<br /> Economic Development Department in accordance with Health and Safety Code,
<br /> division 20, chapter 6.8 under the oversight of the Department. The Preliminary
<br /> Endangerment Assessment (PEA) including a Health Risk Assessment (HRA) were
<br /> submitted and reviewed under the following titled documents: Phase I Environmental
<br /> Site Assessment, Gleason Park Property, Raney Geotechnical, September 8, 2008;
<br /> Phase II Environmental Site Assessment — Soil Sampling And Analytical Testing,
<br /> Gleason Park Property, Raney Geotechnical, October 10, 2008; Update Phase I
<br /> Environmental Site Assessment, Gleason Park Property, Raney Geotechnical,
<br /> May 28, 2009; Draft PEA, Gleason Park Property, Raney Geotechnical,
<br /> December 23, 2009; HRA, Gleason Park Property, ERM-West, Incorporated,
<br /> December 16, 2009; and, Addendum To Draft PEA, Gleason Park Property,
<br /> March 8, 2010 including the Revised Lead Human Health Screening Risk Assessment
<br /> for Restricted Land Use, Gleason Park Property, ERM, March 5, 2010. The documents
<br /> listed above were reviewed as a PEA equivalent report. The PEA equivalent report was
<br /> approved by the Department on March 23, 2010. The PEA equivalent report and HRA
<br /> requires a Covenant as part of the site remediation, because lead, which is a hazardous,
<br /> substance, as defined in Health and Safety Code section 25316, and a hazardous
<br /> material as defined in Health and Safety Code section 25260, remain above
<br /> unrestricted cleanup goals at depths of 9 feet or more below the surface of the
<br /> Property.
<br /> 1 .03. As detailed in the Addendum to Draft Preliminary Endangerment
<br /> Assessment and the Revised Lead Human Health Screening Risk Assessment for
<br /> Restricted Land Use approved by the Department on March 23, 2010, all or a portion of
<br /> the surface and subsurface soils within 10 feet of the surface of the Property contain
<br /> hazardous substances, as defined in Health and Safety Code section 25316, which
<br /> include the following contaminants of concern in the ranges set forth below: lead .
<br /> Statistics based upon samples collected for PEA equivalent report purposes indicated
<br /> the following: 103 samples collected; Concentration range detected equaled 3.2 — 310
<br /> milligrams of lead per kilogram of soil (i.e. parts per million, ppm); Mean, or average
<br /> lead concentration, equaled 93.2 ppm; the 95th Upper Confidence Limit (UCL)of the
<br /> arithmetic mean equaled 125 ppm; The 95th UCL (i.e. 125 ppm) is less than the
<br /> California Human Health Screening Level (CHHSL) advisory concentration for use as
<br /> commercial property (i.e. 320 ppm lead) but greater than the current (Revised CHHSL
<br /> For Lead issued by California Environmental Protection Agency dated September 2009)
<br /> residential land use advisory number of 80 ppm (prior to September the CHHSL
<br /> residential advisory number was 150 ppm). Based on the proposed land use restrictions
<br /> found in the Addendum to Draft Preliminary Endangerment Assessment, and the
<br /> Revised Lead Human Health Screening Risk Assessment for Restricted Land Use
<br /> which used the current Revised California Human Health Screening Levels For Lead,
<br /> the Department concluded that use of the Property for high density residential use (i.e.
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