Table 4. Log of Ambrose Boring No. 4* (Diamond Hill Area). 



Depth: 72 ft (MLW) 

 Interval (ft) 



Description 



Oto 16 



Fill. Coarse brown sand with pea gravel. Black organic clayey silt 

 1.5 to 2 feet. Silt, sand and gravel below 2 feet with pieces of 

 brick, roofing paper, wood and miscellaneous materials. 



16 to 26 



Gray silty fine sand with shell fragments. 



26 to 52 



Soft gray silty clay with shell. Firm by 30 feet with flecks of 

 wood. Micaceous. Less silty at 48 feet. 



52 to 62 



Gray fine to medium sand. 



62 to 121 



Brown fine to coarse sand with pea gravel below 62 feet. Some 

 1.5-inch gravel below 70 feet. Coarse gravel 94 to 97 feet. Coarse 

 sand with pea gravel below 97 feet. 



121 to 196 



Lignite layer, 121 to 122 feet, then light gray silty fine sand with 

 traces of lignite and wood. Much decomposed wood at 169 feet. 



196 to 250 



Hard gray shaly clay with sand seams to 200 feet grades into soft 

 shale by 218 feet, slightly lignitic. Some thin limestone seams 

 below 238 feet. 



*Data from McClelland Engineers (1963a.). (See Figure 2 for location.) 



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