2015 Iowa Recycling and Solid Waste Management Conference

1. AMES
1523 S. Bell Ave., Suite 104
Ames, IA 50010
Phone: (515) 232 0950
DES MOINES
600 SW 7th Street, Suite M
Des Moines, Iowa 50309
P: (515) 244 3184
BETTENDORF
870 40th Ave.
Bettendorf, IA 52722
Phone: (563) 355 070
CEDAR FALLS
3105 Capital Way Suite 5
Cedar Falls, IA 50613
Phone: (319) 277 4016
CEDAR RAPIDS
2640 12th St., SW
Cedar Rapids, IA 52404
Phone: (319) 366 8321
IOWA CITY
3003 Sierra Court SW
Iowa City, IA 52240
Phone: (319) 688 3007
SIOUX CITY
2830 Highway 75 North
Sioux City, IA 51105
Phone: (712) 233 549

2. Lyon County Sanitary Landfill
Marshall, MN
Quick Stats:
 Serves Lyon County and six surrounding counties
 45,000 tons MSW per year
 50% residential; 50% industrial/manufacturing
 41 acres closed; 16 acres open
 Manage leachate onsite with recirculation
 Active landfill gas collection and control system with flare

3. Proposed Landfill Expansion
Expansion Issues:
 Regulatory resistance to wetland mitigation
 Leachate collection flows north to south
 Pre-Subtitle D Landfill east portion of landfill footprint
 High groundwater table (within 4 feet) on eastern portion of
site
 Existing “Permit By Rule” Demolition Landfill south of Pre-
Subtitle D area
 Needed new disposal area within the next 2 years

4. Expansion Concepts
Inward Gradient System (“Zone of
Saturation”):
 Composite liner grades built below groundwater
 Acts as leak detection system
 Hydraulic trap for contaminants
Unlined Landfill Piggyback:
 Develop composite liner over Pre-Subtitle D area
 Excavate old PBR landfill to surcharge settlement

5. IGS Construction at Lyon County Landfill
2008 and 2014

6. Questions ?
Cami Van Abel, P. E.
p: 651-225-5285
e: cavanabel@terracon.com