100 



Table 4-7 

 Postcap (CDM) Sediment Coring Survey Grain Size Analysis Results 



Core 



Depth (cm) 



%Sand 



%Silt 



%CIay 



A-y 



6-lUcm 



40.6 



42.8 



16,5 



A-y 



Ib-iU cm 



5.3 



57.7 



37,0 



A-y 



30-34 cm 



62.7 



24.7 



12.6 



A-y 



3y-43 cm 



11.9 



65.2 



22,9 



A-9 



48-52 cm 



iy.2 



55.0 



25.8 



A-y 



bi-yi cm 



52.1 



30.3 



17.6 



B-l 



i-'l cm 



64.3 



24.1 



11.6 



B-1 



10-14 cm 



83.2 



8.9 



7,9 



B-l 



18-22 cm 



37.2 



39.0 



23.8 



B-l 



24-31 cm 



56.3 



27.8 



15,8 



C-1 



0-4 cm 



36.4 



46.3 



17,3 



C-1 



7-11 cm 



57.2 



29.4 



13,4 



C-1 



15-19 cm 



35.0 



42,7 



22,3 



C-1 



26-30 cm 



26.1 



32.5 



41,4 



C-1 



40-44 cm 



81.2 



11,3 



7.5 



c-1 



53-57 cm 



88.7 



6.5 



4,8 



D-2 



2-6 cm 



82.1 



12.6 



5.3 



D-2 



8-12 cm 



70.7 



22.1 



7,2 



D-2 



19-23 cm 



12.4 



63.2 



24,4 



D-2 



25-29 cm 



17.6 



57,2 



25,2 



D-2 



34-37 cm 



4.7 



64,6 



30,7 



H-6 



2-6 cm 



16.5 



66,3 



17.2 



E-6 



8-12 cm 



24.0 



56.5 



19.5 



E-6 



18-22 cm 



60.3 



26.0 



13.8 



E-6 



30-34 cm 



62.9 



25.0 



12.1 



E-6 



40-44 cm 



52.8 



32.5 



14.8 



E-6 



45-49 cm 



21.0 



57.5 



21.4 



E-6 



50-54 cm 



8.4 



66.3 



25.2 



E-6 



55-60 cm 



9.3 



64,8 



25.9 



E-6 



65-69 cm 



7.3 



64,2 



28.5 



U-2 



4-8 cm 



61.9 



26,2 



11,9 



G-2 



10-13 cm 



30.5 



48.9 



20,6 



G-2 



24-28 cm 



33.8 



45,3 



20,8 



G-2 



32-36 cm 



75.5 



12,4 



12,2 



G-2 



52-56 cm 



91.4 



4.4 



4.2 





0-4 cm 



64.4 



23.0 



12,6 





8-12 cm 



79.0 





6,7 



1-1 



15-19 cm 



84.1 



10.3 



5.6 



1-1 



22-26 cm 



47.0 



37.9 



15.2 



1-1 



27-28 cm 



47.2 



36.9 



16.0 





40-44 cm 



21.2 



53.8 



25.0 



CDM 

 UDM 

 AMB 



Average 



56.2 



30.4 



13.4 



Average 



27.6 



50.2 



22.2 



Average 



72.6 



13,4 



14,0 



Core 



Depth (cm) 



%Sand 



%Silt 



%Clay 



E-2 



4-8 cm 



22,7 



54,9 



22,4 



F-2 



14-18 cm 



26.8 



34,9 



38.3 



F-2 



22-26 cm 



46.5 



38,7 



14.8 



H-2 



2-6 cm 



35.7 



44.7 



19.6 



H-2 



9-13 cm 



15.0 



49.6 



35.4 



Cores H and t- were not used to calculate the 

 averages for each layer due to unreliable 

 stratigraphies and waterlogging. 





The averages were calculated from samples of the 

 seven cores. The layers were determined by the 

 visual observations and the microfossil results. 



The Portland Disposal Site Capping Demonstration Project, 1995-1997 



