



Table A-5. 



Description 



of beach borings shown in Figure 12. 





Boring 



Location 



Elevation 



Sediment 



Horizon depth 



Horizon 



Classification 



Median 



number 







thickness 



below MSL 



thickness 





diameter 







(feet) 



(feet) 



(feet) 



(feet) 





(mUlimeters) 



1 



South end. Lake 

 Montauk Harbor 



-2.6 



26.5 



-2.6 to -29.1 



26.5 



Silt or clay 





2 



West side. 

 Fort Pond 



-0.9 



26.0 



-0.9 to -26.9 



26.0 



SUt or clay 





3 



East side, 

 Napeague Harbor 



-2.1 



25.5 



-2.1 to 27.6 



25.5 



Uniform medium sand 



0.6 to 0.3 



4 



West side, 

 Napeague Harbor 



-2.0 



25.0 



-2.0 to -27.0 



25.0 



Uniform medium sand 



0.6 to 0.3 



5 



West end. 

 Hook Pond 



+1.1 



25.0 



+1.1 to -0.4 



1.5 



Medium to coarse sand 

 with gravel 



2.0 to 0.4 











-0.4 to -3.6 



3.2 



Uniform medium sand 



0.6 to 0.3 











-3.6 to -10.8 



7.2 



SUt or clay 













-10.8 to -15.9 



5.1 



Uniform medium sand 



0.6 to 0.3 











-15.9 to -20.9 



5.0 



Medium to coarse sand 

 with gravel 



2.0 to 0.4 











-20.9 to -23.9 



3.0 



Uniform medium sand 



0.6 to 0.3 



6 



Georgica Pond 



-1.0 



26.5 



-1.0 to -9.5 

 -9.5 to -27.5 



8.5 

 18.0 



Uniform medium sand 

 Silt or clay 



0.6 to 0.3 



7 



Center of 



-0.7 



27.5 



-0.7 to -4.9 



4.2 



Uniform medium sand 



0.6 to 0.3 





Sagaponack Lake 







-4.9 to -6.4 



1.5 



SUt or clay 













-6.4 to -28.2 



21.8 



Medium to coarse sand 

 with gravel 



2.0 to 0.4 



8 



South end. 



-1.9 



27.0 



-1.9 to -10.7 



8.8 



Uniform medium sand 



0.6 to 0.3 





Mecox Bay 







-10.7 to -28.9 



18.2 



SUt or clay 





9 



2.5 miles east of 



-3.3 



28.1 



-3.3 to -6.8 



3.5 



Uniform medium sand 



0.6 to 0.3 





Shinnecock Inlet, 







-6.8 to -10.6 



3.8 



Medium to coarse sand 



2.0 to 0.4 





Shirmecock Bay 











with gravel 













-10.6 to -15.8 



5.2 



Uniform medium sand 



0.6 to 0.3 











-15.8 to -28.8 



13.0 



Medium to coarse sand 

 with gravel 



2.0 to 0.4 











-28.8 to -31.4 



2.6 



Uniform medium sand 



0.6 to 0.3 



10 



0.3-mile west of 



-0.6 



25.0 



-0.6 to -1.7 



1.1 



SUt or clay 







Shinnecock Inlet, 







-1.7 to -19.6 



17.9 



Uniform medium sand 



0.6 to 0.3 





Shinnecock Bay 







-19.6 to -25.6 



6.0 



Medium to coarse sand 

 with gravel 



2.0 to 0.4 



11 



1.2 miles west of 



-1.9 



26.5 



-1.9 to -23.0 



21.1 



SUt or clay 







Shinnecock Inlet, 







-23.0 to -28.4 



5.4 



Uniform medium sand 



0.6 to 0.3 





Shinnecock Bay 















12 



West end of 

 Shinnecock Bay 



-1.1 



25.0 



-1.1 to -26.1 



25.0 



Uniform medium sand 



0.6 to 0.3 



13 



East side. 



-2.2 



26.7 



-2.2 to -15.4 



13.2 



Uniform medium sand 



0.6 to 0.3 





Quantuck Bay 







-15.4 to -26.3 



10.9 



SUt or clay 













-26.3 to -28.9 



2.6 



Medium to coarse sand 

 with gravel 



2.0 to 0.4 



105 



