NRRL Bioreactor Construction Update Week of February 11 · 2-inch PVC injection wells. Temporary...

Introduction

NRRL Bioreactor Construction UpdateWeek of February 11

(photos taken 02/13/02)

Update Summary

NRRL Bioreactor Construction• Construction progress meeting held on

February 13. • Work continued on the placement of the

exposed geomembrane cap (EGC) on the south slope.

• Work continued on the construction of the toe drain and gas collector trenches on the west slope.

Progress on South Slope

South Slope: February 5

South Slope: February 13

EGC Placement

Feb 5

Feb 13

Deploying Geomembrane

Deploying Geomembrane

Deploying Geomembrane

Deploying Geomembrane

Deploying Geomembrane

Deploying Geomembrane

Deploying Geomembrane

Deploying Geomembrane

Placing Sandbags

Sand bags are used to hold geomembrane temporarily in place.

Fusion Welding

Fusion Welder

Geomembrane rolls are fusion weldedtogether with a doublehot wedge weld.

Fusion Welder

Double Wedge Fusion Welder

Anchor Trench

EGC Anchor Trench

Extrusion Weld on Anchor Trench

The weld at the anchortrench overlap is an extrusion weld.

Injection Wells

The EGC is installed on the surface of landfill, above the injection wells. The wells must be extended through thecap after placement in a manner that provides a gas-tight connection. The following slides illustrate this process

Solid Wasteand Daily

Cover

Soil

2-inch PVC injection wells TemporaryCaps

Thermocouple Wire

Process of Constructing EGC

over Injection Wells

EGC – Wells 1

VFPE Geomembrane Placed on Surface of Landfill

Process of Constructing EGC

over Injection Wells

EGC Wells 2

Geomembrane Cut Around Wells

Process of Constructing EGC

over Injection Wells

EGC Wells 3

Geomembrane Cut Around Wells

EGC – Wells 4

Process of Constructing EGC

over Injection Wells

Extrusion Weld Boots

EGC – Wells 4

Process of Constructing EGC

over Injection Wells

EGC and Wells

As soon as geomembraneis pulled over wells, locationis marked.

At a later time, the geomembrane is cut aroundwell.

Temporary Well Boots

Temporary Well Boots

Temporary Well Boots after Well Extension

Permanent Well Expansion Boots

Boot Construction 1

Construction of Expansion Boot: 1 Note: Geomembrane used

for boot is illustratedin red for clarity.

Note: Boots are prefabricatedon site.Geomembrane Collar Around Well

Boot Construction 2

Construction of Expansion Boot: 2 Note: Geomembrane used

for boot is illustratedin red for clarity.

Note: Boots are prefabricatedon site.

Boot Base Sheet

Extrusion Weld

Boot Construction 3

Construction of Expansion Boot:3 Note: Geomembrane used

for boot is illustratedin red for clarity.

Note: Boots are prefabricatedon site.

Note: Boot Collar is Shownslightly expanded for clarity.

Boot Bellows

Extrusion Weld

Boo Construction 4

Construction of Expansion Boot: 4 Note: Geomembrane used

for boot is illustratedin red for clarity.

Note: Boots are prefabricatedon site.

Note: Boot Collar is Shownslightly expanded for clarity.

Neoprene Gasket

Clamp

Prefab Boots

PrefabricatedWell Boots

How Boot Works - 1

How Does Expansion Boot Work?

Initial Condition

How Boot Works - 2

How Does Expansion Boot Work?

Landfill Settles

How Boot Works - 3

How Does Expansion Boot Work?

Adjust Collar

MTG

A similar booting system is used for the MTG sensors

MTG 2

A similar booting system is used for the

MTG sensors

West Side Toe Drain

Construction of Toe Drain and Gas Collectors on the

West Side

Welding Gas Pipe

Bioreactor Sign

End

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