8801_ROSCANS_1994

LAW
ENGINEERING AND ENVIRONMENTAL SERVICES
September 23, 1994
Ecusta Division of P. H. Glatfelter Co.
P. 0. Box 200
Pisgah Forest, North Carolina 28768
Attention: Mr. Robert J. Gussman
Director, Environmental Affairs
Subject: Brown No. 2 Ash Landfill
Ecusta Facility
Pisgah Forest, North Carolina
Gentlemen:
Law Environmental has reviewed Ecusta's preliminary plans for the Brown No. 2 Ash Landfill. The
purpose of our review was to determine the potential effect of expansion on the existing landfill and the
nearby Aerated Stabilization Basin (ASB) dike.
In December, 1989, Law assisted Ecusta with installation of subsurface relief wells along the ASB dike
(please refer to our Report of Relief Well Installation, Job No. 56-9610.50, dated January 17, 1990).
This work demonstrated that continuing subsurface seepage could be expected under the dike, and that
future dike stabilization would be beneficial.
Ecusta plans to place ash within the low-lying open area bordering the south side of the active landfill.
A drainage channel currently flows through this area from east to west. The channel carries stormwater
runoff and spring discharges from a nearby hillside to the Davidson River.
The channel is bounded to the south by the ASB dike. The width of the channel varies from three to ten
feet, and the channel lies about 18 feet below the top of the ASB dike. Flow carried by the channel from
upgradient are.as is proposed to be redirected to an existing sediment control basin. Since the basin outlet
is downgradient of the fill area, flow will effectively bypass the portion of the drainage channel to be
filled.
From the top of the ASB dike to the ash landfill, a rectangular area covering approximately 150 by 600
feet is planned for fill placement. The ash will be placed in this area up to the top of the ASB dike; the
fill will ultimately be 18 to 20 feet deep.
Our recently completed review has indicated that expansion of the ash landfill will provide two major
benefits to Ecusta:
• Stability at the toe of the existing steeply-sloped landfill will be reinforced by the presence of ash
in the drainage channel.
• The proposed compacted ash fill will help stabilize the ASB dike by providing a counterbalancing
force on the north side of the dike.
LAW ENVIRONMENTAL, INC.
2801 YORKMONT ROAD, SUITE 300 • CHARLOTTE, NC 28208
P. 0. BOX 240674 • CHARLOTTE, NC 28224-0674
[phone] • FAX [phone]
ONE OF THE 1/<W COMPANIES @
Expansion of Brown No. 2 Land.fill
Ecusta Facility, Pisgah Forest, North Carolina
page 2
September 23, 1994
Law Environmental appreciates this opportunity to assist Ecusta with expansion of the Brown No. 2 Ash
Landfill. If you have any questions regarding the information presented herein, please contact us.
Sincerely,
LAW ENVIRONMENTAL N.C., INC.
cc: Mr. Jack Garren, Director of Project Engineering