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Y STATE, OF CALIFORNIA <br /> ) <br /> SS <br /> COUNTY OF SAN J AQUIr7 ) <br /> I, ,MARSHALL M CARTY, being duly sworn, declare that I was <br /> Plantupintndent at CaliforniaClay Products Company and was <br /> employed by California Clay Products Company for the years 1953 <br /> to 1971. <br /> hat I was ,in charge of the clay di4ging operations in the <br /> ten-acre clay pit at 3200 S. McKinley Avenue, Stockton, California. <br /> That this pit was bottomed at approximately twenty-one (21) <br /> feet below ground surface when quarrying ceased in 1967. That during <br /> e years 1966 and 1967 in digging small test holes at various <br /> portions of the Pit to determine the clay reserve, I found that <br /> the dense calcareous hardpan clay extended uniformly, and without <br /> sand strata, to a further depth' of at least f3fteen (15) additional <br /> feet from the bottom of the pit, and that the ground Fater table <br /> lay well below ;this thirty-six (3 ) foot level. <br /> No actual test holes have been drilled below thirty-six (36) <br /> , . feet however from my general knowledge of this area of Stockton, <br /> believe the tight clay deposit is at least fifty (50) .feet <br /> ' thick, <br /> MARSHALL MCCARTY <br /> Subscribed and`sworn to before me <br /> this day of , 1973. <br /> Notaryubl c n and for the County <br /> of San ,Joaquin, State of. California. <br />