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I r TABER CONSULTANTS - Engineers & Geologists <br /> 536 Galveston Street - West Sacramento, California 95691 <br /> West Sacramento(916) 371-1690 - Santa Rosa(707)575-1568 <br /> West Sacramento Telecopier(916) 371-7265 <br /> SINCE 1954 <br /> May 27 , 1988 <br /> San Joaquin Local Health District <br /> 1601 East Hazelton Avenue <br /> Stockton, California 95201 <br /> Subject : Technical Work Plan 1P2/387/81 <br /> Bacon Island Road Bridge Replacement <br /> at Middle River <br /> Bacon Island <br /> San Joaquin County, California <br /> Gentlemen: <br /> Purpose of soil borings at the above site is to investigate <br /> subsurface materials and conditions for geotechnical evaluation <br /> and design purposes . Current work is to include two rotary drilled <br /> test borings which will be immediately destroyed (backfilled per <br /> County regulations ) upon completion of drilling. <br /> Borings will be 3 to 4-inches in diameter and 60-80 ft in depth <br /> located per plan attached. Laboratory testing on soil samples <br /> obtained from the borings will include various strength and class- <br /> ification tests . None of the borings are for permanent use and no <br /> chemical analysis is planned for soil or water obtained from the <br /> borings. <br /> Destruction of the borings is proposed by means of combination <br /> cement and bentonite slurry pumped into the hole (from the bottom-up) <br /> through drill rod or pipe. <br /> Very truly yours , <br /> TABER CONSULTANTS <br /> A <br /> G. D. Avey <br /> GDA/FPT/twf <br />