south along strike this upper ss (which is at base of Lzkta silt interval) consists of 2 double bench totaling 13' with another thin bed in about 15' further up. Here head leveling ⊥ strike & allowing for 5° dip and estimated 95 feet of section between lower ss and base this ledge. However not positive start was at top lower ss. Measurement of Lzkta siltstone - An approx- leveled thickness measured from road through Eden School Quarry + up next ridge down dip, is 130 feet. But suspect fault at Eden School, if so could be as little as 85, but no less, so 85 to 130 are limits