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.12'05/2007 17:013 FAX 209 8421 <br /> �i)07 <br /> k" KLEIN FELDER <br /> A'TTACRMENT A <br /> SCOPE OF WORT{ <br /> Proposal[Workplan <br /> Limited Soil Assessment <br /> Former Underground Storage Tank Site <br /> Lopez Property <br /> 1601 Turnpike <br /> Stockton,California <br /> ]INTRODUCTION <br /> K]oinfclder is pleased to present this ProposaUVA'orxplan to Ms. Duncan Keir. This <br /> ProposaMorkplan was developed based upon our current understanding of site conditions and <br /> -------— --carrespundz�Iekder—is�ommitted�rb�i2il�g"quah service o our c len , <br /> commensurate with their wants,needs and desired level of risk. If a portion of this proposal does <br /> not meet your needs, or if those needs have changed, Kleinfelder will consider appropriate <br /> modifications subject to the standards of care to which we adhere as professionals. <br /> Modifications such as changes in scope, methodology, scheduling, and contract terms may result <br /> in changes to the risks assumed by you our client as well as adjustments to our fees. <br /> BACKGROUND <br /> Kleinfelder was contacted to present a cost estimate to assess the subsurface soils located at 1601 <br /> Turnpike Road, Stockton California The subject property had previously been owned or <br /> operated by Harbor Signs. According to an BBD inspection report filed October 16, 1987 a <br /> 1,000-gallon leaded fuel underground storage tank (UST) was removed. on October 14, 1987 <br /> under San Joaquin County Health Department permit and inspection. The tank appeared intact, <br /> ,and soil samples were collected on October 16, 1987 due to equipment inadequacies. The soil at <br /> 15 feet reportedly had a strong petroleum product odor. The soil samples collected beneath the <br /> tank were analyzed and had non-detect levels of petroleum constituents (BTEX, ethyldibromide, <br /> TPH-4,TPH-D, TPH-K, and TPH-MO). <br /> The soil beneath the LIST was resampled on June 20, 1996, to eonfuxn the results previously <br /> obtained- One sample was obtained at a depth of 16 feet below ground surface(bgs). The soil <br /> was sampled for TPH-G, BTS, and MTBE. The sampled contained non-detect values of all <br /> constituents. Based upon review of the QA/QC data accompanying the analytical reports, BHD <br /> determined that additional investigation was necessary. <br /> On October 17, 2063 the EHD issuers a letter of"Official notiftceion" that the abor-e site has <br /> betr assigned to the Local Oversight Program "for oversight of assessment and clean up <br /> activities at contaminated underground storage tanks sites." EHT) requested a workplan to <br /> investigate the lateral and vertical extent of crniramination at the above site. <br /> C)a:nmoer 5.�OU3 <br /> p?ppIPRQP.ETiV1ST0iF9-a3 Page 1 0;u <br /> ;�20�°iC1e(c:elder,1M. <br />