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Soil Sampling Work Plan
<br /> Stockton,CA-SIRRC Property Exchange
<br /> 1800 North Marshall Avenue,Stockton,California
<br /> Antea Group Project No. UPR8281A
<br /> No Further Action letters were issued to AFPC and AMMC on October 28, 2009 and March 31, 2010, respectively
<br /> (SJCEHD 2009, 2010). Wells which were previously installed on OU-2 were destroyed in January 2010(SJRRC, DTSC
<br /> 2010).
<br /> Condor Earth Technologies, Inc. (Condor) produced a Soil Management Plan (SMP) dated May 18, 2010 which
<br /> outlined health and safety precautions during soil disturbance, waste handling and decontamination procedures
<br /> for ground disturbance events onsite (Condor 2010). The DTSC approved the SMP in their June 17, 2010 letter
<br /> (DTSC 2010A).
<br /> On August 15, 2010, a Land Use Covenant (LUC) was made between the SJRRC and the County of San Joaquin for
<br /> the site due to the presence of antimony, benzo(a)pyrene, lead, 2,3,7,8-TCDD TEG, carbon tetrachloride,
<br /> 1,2-dichloroethane, PCE and 1,2-butadiene remaining in soils above the unrestricted residential cleanup goals on
<br /> the surface of the property. The LUC restricts land use for residences, school for persons under the age of 21 or a
<br /> day care center.The property is restricted to industrial/commercial use only.Activities such as raising cattle,food
<br /> crops or agricultural products,drilling for drinking water,oil or gas without written approval by the Department,or
<br /> extraction of groundwater except as approved by the Department in a Groundwater Management Plan. The LUC
<br /> also outlined a requirement for annual inspection reports(SJRRC, DTSC 2010).
<br /> On October 20, 2010 the DTSC issued a Remedial Action Certification form for the AMMC(DTSC 201013).
<br /> Soil removal activities occurred in OU-1 in 2010 and 2011, but these activities were conducted for construction,
<br /> and do not affect the proposed property transfer area.
<br /> The SJRRC completed the first annual inspection for the site on January 5,2012. The SJRRC noted that the teepee
<br /> structure had been demolished,and that the drainage basin and basement were filled in (SJRRC 2012).
<br /> The primary constituents of concern for the site are considered to be dioxins/furans, lead, antimony,
<br /> benzo(a)pyrene, carbon tetrachloride, 1,2-DCE, PCE, 1,2-butadiene, formaldehyde, diesel range organics and
<br /> polynuclear aromatic hydrocarbons(SJRRC and DTSC 2010, Envirostor database).
<br /> Included in the area of proposed property transfer was most notably a former metal teepee incinerator(Figure 2).
<br /> According to AMEC's October 6, 2009 report, soil samples collected from this area have not exceeded established
<br /> RBRGs. Also included near the work area was a fuel storage and dispensing area in the southern portion of the
<br /> parcel, and some drainage ditches and water basins(unknown locations). Soil samples collected from ditches and
<br /> water basins have historically contained formaldehyde.
<br /> 2 www.anteagroup.com
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