NCD980602163_19790315_Warren County PCB Landfill_SERB C_Volume Calculations - Clay Liner Soil-OCR

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SOIL & MATERIAL ENGINEERS" INC. ENGINEERING-TESTING-INSPECTION
3109 Spring Forest Road, Box 58069, Raleigh, N.C. 27658 Phone [phone]
Department of Human Resources
Division of Health Services
Solid Waste Management Unit
P.O. Box 2091
Raleigh, North Carolina
Attention: Mr. Jerry Perkins
March 15, 1979
i Subject: Volume Calculations-Clay Liner Soil
Proposed PCB Disposal Site
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Warren County, North Carolina
S&ME Job No. RG-730
Gentlemen:
As requested, Soil & Material Engineers, Inc.
has further evaluated the volume of soil available on-site,
suitable for use as clay liner material. The suitability of
the on-site soils were investigated by our company and
discussed in our report dated March 5, 1979.
At this time, the dimensions of the disposal
pit are uncertain. Therefore, the quantity of clay liner
soil is also unknown. However, based upon a preliminary
estimate of a 4 acre disposal pit, a 5 foot thick compacted
clay liner and a 2 1/2 foot thick compacted clay blanket,
the estimated volume of compacted clay needed for construction
of the disposal pit would be about 48,400 cubic yards.
We have estimated that about 53,600 cubic yards
(bank volume) of suitable clay exists within the area en-
compassed by our borings. In a compacted state, this bank
volume would represent about 45,600 cubic yards (assuming
15% shrinkage).
Although the estimated compacted volume of
suitable soil existing within the area investiaged is slightly
less than estimated volume needed for a 4 acre disposal pit;
we feel that a sufficient quantity of additional suitable
soil is available in other adjacent areas.
RALEIGH, N.C. -GREENSBORO, N.C. -NORFOLK, VA. -SPARTANBURG, S.C. -ATLANTA, GA. -TRI-CITIES, TN.
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Department of Human Resources
P roposed PCB Disposal Site
March 15, 1979
l>age 2
It is our opinion, based upon observations at
the site, soil borings, and laboratory tests, that a much
larger volume of suitable soils are available in the prev-
iously cleared areas, immediately adjacent to the area
investigated.
We suggest that -after the final dimensions of
the site have been determined, the limits of the clay liner
borrow area can also be established. Then, if the final
design is significantly different from our preliminary
assumptions, we can test soils within the expanded borrow
area, to verify the suitability of .this material.
EBE:RJO:sp
If you have any questions, please call us.
Very truly yours,
SOIL & MATERIAL ENGINEERS, INC.
Eldon B. 14
N. C. R
Evans, E.I .T.
~
ens, P.E.
ered: 1/5160
SOIL & MATERIAL ENGINEERS INC.
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SOIL 8c MATERIAL ENGINEERS, INC.
3109 SPRING FOREST ROAD
BOX 58069
RALEIGH, N.C. 27658
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