90 



Table 4-6 



January 1997 Postcap REMOTS® Survey Results 





Postcap Survey Replicate 



Penentration Depth 



Cap Thickness 1 



Station 



(cm) Average 



(cm) >pen* 



Average 



CTR A 



9 7.0 



9 >pen 



7.0 



CTR B 



9 



9 >pen 



CTR C 



4 



4 >pen 



CTR D 



10 



10 >pen 



CTR E 



7 



7 >pen 



CTR F 



3 



3 >pen 



SON A 



10 10.0 



10 >pen 



10.0 



SON B 



9 



9 >pen 



SON C 



11 



11 >pen 



ICON A 



13 12.7 



10 



9.7 1 



lOON B 



13 



10 



lOON C 



12 



9 



200N A 



6 7.7 



4 



4,0 1 



200N B 



8 



4 1 



200N C 



9 



4 1 



SONE A 



11 11.7 



12 >pen 



10.7 1 



50NE B 



12 



12 >pen 



SONE C 



12 



8 



lOONE A 



13 13.7 



12 



12.0 1 



lOONE B 



13 



6 to 13 



lOONE C 



15 



10 to 15 



SOENE A 



6 8.3 



5 



7.0 1 



50ENE B 



7 



5 



SOENE C 



12 



11 



lOOENE A 



12 11.7 



NA 



9.5 1 



lOOENE B 



13 



11 



lOOENE C 



10 



8 



1 SOENE A 



13 11.7 



11 



9.3 1 



ISOENE B 



14 



9 



1 SOENE C 



8 



8 >pen 



200ENE B 



3 11.4 



3 >pen 



9.3 1 



200ENE C 



14 



8 



200ENE D 



12 



NA 



200ENE E 



14 



13 



200ENE F 



14 



13 



' * ">pen" indicates thickness greater than the camera penetration; where not specified, ambient 



and dredged 



material were below measured cap material. 



The Portland Disposal Site Capping Demonstration Project, 1995-1997 



