4501_ROSCANS_1981

P ' B Post, Buc -�y, Schuh & Jernigan, Inc.
S I J CONSULTING ENGINEERS and PLANNERS
100 NORTHCREEK, 3715 NORTHSIDE PARKWAY, NW, ATLANTA, GEORGIA 30327 . 404/261-2360
March 17, 1981
Mr. Joel Mashburn
County Administrator
Henderson County, North Carolina
244 Second Avenue East
Hendersonville NC 28739
Dear Joel:
We are pleased to be able to submit these results of
our work for your consideration. Enclosed is basically
a summary of the estimations made for the Henderson
County Sanitary Landfill's potential expansion life.
Please pay special attention to the assumptions made
and the points where the "best information" immediately
available had to be used. As we discussed in our
telephone conversation (16 March 1981) about these results,
we had to use less than adequate topographic information
and make many assumptions.
Should you have any questions or comments, please do not
hesitate to contact us. I am looking forward to meeting
with you and the Henderson County Commissioners to discuss
these results as you have requested.
Very truly yours,
POST, BUCKLEY, SCHUH & JERNIGAN, INC.
Z�
EDT/jfs Edd D. Thomas
Project Manager
Enclosures
600-094.01

f
Mr. Joel Mashburn
March 17, 1981
600-094.01
HENDERSON COUNTY SANITARY LANDFILL- PHASE II
Soil Volume Estimations and Landfill Life Site Options
° Soil Volume Available on the Existing County Property
650,000 cubic yards (volume of excavation)
minus 93,000 cubic yards (volume of rock)
557,000 cubic yards
Soil Volume Available on the Adjacent Property to the West of the
Existing County Property
84,000 cubic yards
° Landfill Volumes
1,734,000 cubic yards -gross potential maximum
minus 495,500 cubic yards - soil (22 : 1)
1,238,500 cubic yards - refuse (22 : 1)
° Landfill Life Options
- 557,000 "bank" cubic yards of borrow reduces to approximatley
473,500 "remoulded" cubic yards from the existing County
property. '
- 495,500 yd.3 - 473,500 yd3 = 22,000 yd3
Any purchase of additional property for this small amount of
soil ( < 5% of gross) is not advised.
- If a daily inflow to the site of 125 tons per day of refuse is
assumed (125 tons = approximately 250 cubic yards of buried
volume) and an operation of 5.5 days per week for 52 weeks per
year is assumed:
1,238,500 cubic yards 71,500 cubic yards/year 14-17 years

11 l
Mr.Joel Mashburn
March 17, 1981
600-094.01
ASSUMPTIONS UPON WHICH LANDFILL ESTIMATES ARE BASED
* That the existing topography on -site is as assumed in the drawn
cross -sections for volume calculations.
* That the topographic survey map furnished to PBS&J by Henderson
County is true and correct for the existing topography in areas
undisturbed since 1975 when the map was drawn up by William Patterson,
R.L.S. 205 N. Main Street, Hendersonville, North Carolina 28739.
* That the future landfilling on this site will conform with the
assumptions made in these calculations for height, slopes, etc.
* That appropriate earthmoving equipment will be used for the ex-
cavations (i.e. the present site equipment will not be adequate).
* That daily soil volumes used for the refuse cover will not exceed a
ratio of four volumes of in -place refuse to one volume of daily
soil cover. This will require a more efficient usage of soil than
has been exercised in the past at this site.
* That the geo-technical data contained within the Atec, Inc. report
is true and correct.
* That the survey data furnished by Jon Laughter is true and correct.
* That the rock encountered will be at least partially excavatable.
* That the volume of refuse coming into the site is approximately 125
tons per day, and that, for purposes of the life time of landfill
estimates, does not change with time.
* That the North Carolina Solid & Hazardous Waste Management Branch
agrees with the particular assumptions for future landfilling
depths, bottom, height, slopes, ecetera that have been made for
purposes of these estimates.
* That any change in the basis for which these aforementioned as-
sumptions have been made will have a direct effect on the reli-
ability of the estimation contained in this report.