Finance Committee

Specification 02560 - Landfill Gas Extraction Wells Page 4 of 4
January 2021 3066.21

D. The Bentonite Seal will be formed by evenly distributing bentonite around the
annulus of the well until a minimum plug thickness of 1 foot has been achieved.

3.3 DISPOSAL

A. Waste from well drilling operations shall be hauled to the active face of the
landfill operation the same day it is excavated.

[END OF SECTION 02560]

P:\3000s\3066.21\Source Files\Tech Specs\Division 2 Specifications\Section 02560 LFG Extraction Wells.doc

SANBORN HEAD

Specification 02560 - Landfill Gas Extraction Wells Page 3 of 4

January 2021

3066.21

B.

Wells shall be drilled to the minimum diameter and the specific depths shown on
the Drawings. CONTRACTOR shall drill the wells using bucket-type augers and
dry drilling equipment; wet rotary drilling equipment may not be used.

Specification 02560 - Landfill Gas Extraction Wells

January 2021

Page 2 of 4
3066.21

Aggregate shall be washed, and uniformly blended according to the particle
size distribution requirements shown below.

Sieve Size Percent Passing by Weight
2-inch 100
1%-inch 90 - 100
1-inch 30 - 40
%4-inch 10-15
¥Y-inch 0-5
¥s-inch 0-5

2.2 BENTONITE SEAL

A. Bentonite seals shall be installed where shown on the Drawings using a hydrated
bentonite slurry mix poured into place.

2.3 SAND/GRAVEL FILTER

SECTION 02560
LANDFILL GAS EXTRACTION WELLS
PART 1 - GENERAL
11 SCOPE OF WORK

A. Supply all equipment, materials, and labor needed to install landfill gas
extraction wells as specified herein and as indicated on the Drawings.

12 SUBMITTALS

A. CONTRACTOR shall submit to ENGINEER Certificates of Compliance on
materials furnished, and manufacturer’s brochures containing complete
information and instructions pertaining to the storage, handling, installation,
and inspection of pipe and appurtenances furnished.

[END OF SECTION 02550]

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File No. 3066.21 Geomembrane 02550 - 10 of 10 January 2021

3.6 INSTALLATION CONTRACTOR QC TESTING

A. The Installation Contractor shall non-destructively test the full length of all
seams to ensure watertight, homogeneous seams. Test methods shall consist of
vacuum box testing, air-pressure testing of double-fusion seams, or other
methods approved by the manufacturer and the CQA Consultant. The test shall
be performed as work progresses, rather than at the completion of all field
seaming.

3.5

other defects shall extend a minimum of 6 inches beyond the edges of the defect.
All corners of patches shall be rounded with a radius of at least 3 inches.

TRIAL SEAM TESTING

A.

3.4

GEOMEMBRANE SEAMING

A.

Seaming equipment shall be equipped with temperature gauges and readout
devices that enable continuous monitoring of equipment temperatures during
seaming. Electric generators shall be capable of providing constant voltage
under load and shall be underlain with a splash pad to collect spilled fuel or oil
when located on the GGcomembrane.

3.3 GENERAL INSTALLATION

A.

The Installation Contractor shall be responsible for field handling, storing,
placing, and seaming, plus any other processes required to assemble a
continuous secure Gcomembrane.

Installation shall be performed under the direction of a competent field
technical representative. The technical representative shall be in charge of the
installation and shall be responsible for the work performed.

Smoking is prohibited on the GGomembrane or other geosynthetics associated
with the project.

contamination by foreign matter.

5. The Geomembrane delivered to the site shall be accompanied by a QC

Certificate for each roll (roll Certificates must be provided to the CQA
Consultant prior to shipment to the job site), and shall be identified with a
distinctive code that will serve as the identification number on the as-built
drawing.

7. The texturing of the GGomembrane shall be regular and uniform. Rolls of