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Page 2 2/ " <br /> August 3, 1994' 1 <br /> BAE31604.AS.01 oyl, ' ' <br /> The diameter of the borehole for the piezometers shall be�ches. The total borehole <br /> depth shall be 90 feet. The four piezometers shall be constructed of 1.25-inch, schedule 80 <br /> PVC to depths of 60, 70, 80, and 90 feet below ground surface. ENGINEER reserves the <br /> right to change borehole and piezometer depths based on conditions encountered in the <br /> field. I <br /> ENGINEER will log geology of boreholes at five foot intervals during drilling. <br /> CONTRACTOR shall provide a 2-inch split-spoon sampler and new brass sleeves and end <br /> caps for soil sampling. <br /> Complete Bids (combining requirements of this letter and the July 14th letter) need to <br /> be furnished to CH2M HILL by 5:00 on August 10, 1994. If you have any questions, <br /> please call me at 510/251-2888 (ext. 2118). { <br /> Sincerely, Y <br /> CH2M HILL <br /> Bern Baumgartner <br /> Environmental Engineer <br /> beb/dm10 <br /> cc: Soon Kim <br /> Grant Stewart <br /> j <br /> 1 <br /> 4 <br /> I <br /> t <br />