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a <br /> INTERNATIONAL TECHNOLOGY CORPORATION <br /> Ms. Wendy Wyels <br /> Page 3 <br /> 4. IT will survey all wells relative to the established benchmark located on West <br /> Washington Street near the Port of Stockton offices. <br /> 5. Soil samples collected from drilling the new wells will only be analyzed if necessary to <br /> help define the extent of impacted soil or to identify possible sources of chemicals known <br /> to exist in the groundwater. The proposed soil sampling plan is summarized in Table 5. <br /> Specifically, the soil sample from MW-6 and MW-7 will be analyzed for nitrate and the <br /> soil sample from MW-7 will also be analyzed for ammonia. <br /> Remedial Options Feasibility Study (Section 2.2) <br /> The feasibility study (FS) will follow the general guidelines required for CERCLA. The FS will <br /> occur in three phases: the development of alternatives, the screening of alternatives and the <br /> detailed analysis of alternatives. Section 2.2 has been expanded to provide further detail of the <br /> FS process. <br /> Reports (Section 2.3) <br /> As requested, quarterly monitoring reports will be submitted within eight weeks of sample <br /> collection. <br /> Ouarterly Monitorine (Section 2.3.2) <br /> The quarterly groundwater sampling analytical program will follow the same program as outlined <br /> in Table 5. Specifically, all wells will be sampled for pesticides, nitrate and ammonia. Four <br /> wells (MW-1,2,3 and 6) will be sampled for herbicides to monitor plume dimensions and <br /> concentrations known to exist only in MW-3. Six wells (MW-1,2,4,5,7 and 8) will be sampled <br /> for petroleum hydrocarbons to monitor plume dimensions and concentrations known to exist only <br /> in MW-1. <br /> Thank you for your assistance on this project. If you have questions or require any additional <br /> information, please call me at (916)361-7673. <br /> Sincerely, <br /> IT CORPORATION <br /> '1� -n `w.....a'`-- <br /> Joseph Ramage, R.G. <br /> Project Manager <br /> Enclosure - Workplan <br /> cc: Mr. Mike Nakagawa, Esq. - Nakagawa & Rico (2 Copies) <br /> Mr. Mike Infurna - San Jaoquin County PHS/EHD <br /> rr Cozporadon z a wholly owned suhsialory of Ihternattonal Technology Corporadm <br />