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SECTION 02520

DRAINAGE GEOCOMPOSITE

PART 1 - GENERAL

1.1

1.2

1.3

1.4

SCOPE OF WORK

A.

CONTRACTOR shall provide all labor, materials, tools, and equipment and
perform all operations necessary to furnish, deploy, and install Drainage
Geocomposite in the areas indicated on the Drawings or as required by
ENGINEER or OWNER.

QUALITY ASSURANCE

A.

CONTRACTOR shall be trained and experienced in field handling, storing,
deploying, and installing Drainage Geocomposite. Alternatively, CONTRACTOR
shall engage an experienced Subcontractor who shall meet the experience
requirements.

CONTRACTOR shall submit to ENGINEER certification that the material meets
the required Specifications at least 15 days prior to delivery of materials to the
site.

Drainage geocomposite shall be sampled and tested in accordance with the
approved Construction Quality Assurance (CQA) plan.

MATERIAL STORAGE AND HANDLING

A. CONTRACTOR shall be responsible for the handling, storage, and care of the
Drainage Geocomposite from the time of delivery to the site until final
acceptance of the completed work by the CQA Consultant, ENGINEER, and
OWNER. CONTRACTOR shall be liable for all damages to the materials during
such time.

SUBMITTALS

A. CONTRACTOR shall submit manufacturer’s data indicating conformance with
these Specifications.

B. Drawings showing geocomposite sheet layout, location of seams, direction of
overlap, and sewn seams.

C. Description of proposed method of deployment, sewing equipment, sewing

methods, and provisions for holding geocomposite temporarily in place until
permanently secured.

File No. 3066.09 Drainage Geocomposite 02520 - 1 of 5 December 2017

PART 2 - PRODUCTS
2.1 GENERAL

A. The Drainage Geocomposite shall meet the performance requirements of this
section. CONTRACTOR may select from either a geonet geocomposite or a
multi-liner geocomposite.

2.2 MULTI-LINEAR DRAINAGE GEOCOMPOSITE

A. Material Description

1. Multi-Linear Drainage Geocomposite shall consist of two geotextile layers
comprised of short synthetic staple fibers of 100% polypropylene or
polyester needle-punched together with perforated corrugated
polypropylene pipes (mini-pipes) regularly spaced inside.

2. The perforated polypropylene pipes shall function as the primary fluid
conveyance. The pipes shall be corrugated with two perforations per
corrugation at 180° and alternating at 90°.

B. Multi-Liner Drainage Geocomposite Properties
1. The components of the Multi-Linear Drainage Geocomposite specified
shall meet or exceed the values provided in the table below.

MANUFACTURING QUALITY CONTROL TEST REQUIREMENTS

CHARACTERISTIC | STANDARD — | UNIT | | MARV
Mini-pipe Properties
Outside diameter ASTM D2122 mm (in) 25 (1.0)
Stiffness at 5% deflection ASTM D2412 kPa (psi) 3000 (435)
Geotextile Properties (each component)
Mass Per Unit Area ASTM D5261 g/m? (oz/yd?) 270 (8)
Grab Tensile Strength ASTM D4632 N (lb) 979 (220)
Trapezoidal Tear Strength ASTM D4533 N (lb) 400 (90)
Puncture CBR ASTM D6241 N (lb) 2670 (600)
AOS@ ASTM D4751 mm (US sieve) | <0.18 (80)
Permittivity ASTM D4491 sec! 21.26
Geocomposite Properties
Transmissivity (2) | ASTMD4716 | m2/sec | 1.0x10°3

Notes:

(1) Maximum Average Value.

(2) Measured at a minimum seating time of 100 hours, with a test section including Drainage Sand
above the Drainage Geocomposite and textured 60-mil textured HDPE below, using a gradient
of 0.1 under a compressive stress of 12,000 psf for 100 hours.

File No. 3066.09 Drainage Geocomposite 02520 - 2 of 5 December 2017

2.3. GEONET DRAINAGE GEOCOMPOSITE
A. Material Description
1. Geonet Drainage Geocomposite shall consist of a geonet to which a
geotextile has been heat-bonded to both sides.
2. The geonet shall be manufactured of high-density polyethylene.
3. The geotextile shall be needle-punched, nonwoven, short synthetic staple
polypropylene or polyester fibers

B. Geonet Drainage Geocomposite Properties
1. The components of the Multi-Linear Drainage Geocomposite specified

shall meet or exceed the values provided in the table below.

MANUFACTURING QUALITY CONTROL TEST REQUIREMENTS

CHARACTERISTIC | STANDARD | UNIT | | MARV
Geonet Properties
Core Net Thickness ASTM D5199 mils 2250
Resin Specific Gravity ASTM D1505 g/cm? 0.94
Resin Melt Index ASTM D1238 g/10 min <1.1
Tensile Strength ASTM D7179 Ib/in.
Carbon Black Content ASTM D4218 % 2 to 3
Geotextile Properties (each component)
Mass Per Unit Area ASTM D5261 g/m? (oz/yd?) 270 (8)
Grab Tensile Strength ASTM D4632 N (Ib) 979 (220)
Trapezoidal Tear Strength ASTM D4533 N (lb) 400 (90)
Puncture CBR ASTM D6241 N (Ib) 2670 (600)
AOS(@) ASTM D4751 mm (US sieve) | <0.18 (80)
Permittivity ASTM D4491 sec! 21.26
Geocomposite Properties
Transmissivity (2) ASTM D4716 m2/sec
Ply Adhesion ASTM D7005 lb/in. 1.0

Notes:

(1) Maximum Average Value.

(2) Measured at a minimum seating time of 100 hours, with a test section including Drainage Sand
above the Drainage Geocomposite and textured 60-mil textured HDPE below, using a gradient
of 0.1 under a compressive stress of 12,000 psf for 100 hours.

2.4 TIES (for Geonet Drainage Geocomposite only)

A. Ties used to secure adjacent sheets of Geonet shall be plastic fasteners or

polymer braid and shall meet the approval of ENGINEER. Metallic ties shall not
be allowed. Ties shall be yellow or white to facilitate inspection.

File No. 3066.09 Drainage Geocomposite 02520 - 3 of 5 December 2017

2.5 THREAD

A.

Thread used to seam the geotextile shall be polymer material with chemical
resistance properties equal to or exceeding those of the geotextile. The thread
shall be different color than the geotextile.

PART 3 - EXECUTION

3.1 INSTALLATION

A.

Drainage Geocomposite shall not be stockpiled or stored within the limits of
the area to be lined.

Drainage Geocomposite shall be installed in accordance with manufacturer’s
recommendations, and as shown on the Drawings and specified herein. If a
Drainage Geocomposite with a preferential flow direction is used, it shall be
installed oriented with the preferential flow direction perpendicular to the
contours unless otherwise approved by ENGINEER.

Care shall be taken to keep the Drainage Geocomposite clean prior to
installation.

Folds or excessive wrinkling of deployed Drainage Geocomposite shall be
removed to the extent practicable. CONTRACTOR shall exercise care not to
entrap stones, excessive dust, or foreign objects in the material. Drainage
Geocomposite shall be adequately weighted, using sand bags or equivalent
until the Drainage Sand and Crushed Gravel cover is placed.

Adjacent sheets of Drainage Geocomposite shall be overlapped a minimum of 4
inches, and shall be secured using ties, if appropriate for the material used,
placed at intervals no greater than 5 feet. Additional ties spaced at intervals
not exceeding 2 feet shall be used on seams running across slopes and located
in anchor trenches. Spot welding of the Drainage Geocomposite to the
geomembrane shall not be allowed.

The upper geotextile on adjacent panels of Drainage Geocomposite shall be
sewn together with a continuous seam in the field prior to placement of
overlying soil. All seams on sideslopes shall be oriented parallel to the slope.
The adjacent sheets of geotextile shall be overlapped a minimum of 6 inches
prior to seaming. All overlaps shall be such that the upslope sheet is placed
over the downslope sheet. No holes in the upper geotextile will be allowed. All
tie holes at horizontal seams shall be covered with a leistered nonwoven
geotextile patch.

File No. 3066.09 Drainage Geocomposite 02520 - 4 of 5 December 2017

G. Drainage Geocomposite shall not be exposed to ultraviolet rays for more than
fourteen (14) days before being covered. CONTRACTOR shall place Drainage
Sand over the Drainage Geocomposite as specified in Section 02200 and in
such a manner as to ensure the Drainage Geocomposite is not damaged.

[END OF SECTION 02520]

P:\3000s\3066.09\Source Files\Type 11 App\Specifications\Division 2 Specifications\02520 Geocomposite.docx

File No. 3066.09 Drainage Geocomposite 02520 - 5 of 5 December 2017

SECTION 02530
GEOSYNTHETIC CLAY LINER
PART 1 - GENERAL
1.1. SCOPE OF WORK

A. Furnish all labor, materials, tools, and equipment and perform all operations
necessary to furnish, deploy, and install Geosynthetic Clay Liner (GCL) in the
areas indicated on the Drawings or as required by the ENGINEER or OWNER.

1.2 SUBMITTALS

A. CONTRACTOR shall submit to ENGINEER certification that the materials meet
the required specifications and the manufacturer's instructions for handling
and installing the material, at least ten days prior to delivery of materials to the
site.

1.4 QUALITY ASSURANCE
A. CONTRACTOR shall be trained and experienced in field handling, storing,
deploying, and installing GCL. Alternatively, CONTRACTOR shall engage an

experienced subcontractor who shall meet the experience requirements.

B. GCL shall be sampled and testing in accordance with the approved Construction
Quality Assurance (CQA) plan.

1.5 MATERIAL STORAGE AND HANDLING

A. All rolls shall be labeled and bagged in packaging that is resistant to
degradation by ultraviolet (UV) light.

B. CONTRACTOR shall be responsible for the handling, storage, and care of the
GCL from the time of delivery to the site until final acceptance of the completed
work by OWNER. CONTRACTOR shall be liable for all damages to the materials
during such time.
C. The GCL shall be stored in a dry location and off the ground.
PART 2 - PRODUCTS
2.1 GCL

A. The GCL shall consist of a continuous layer of sodium bentonite sandwiched
between a woven geotextile carrier layer and a nonwoven geotextile cover
layer and reinforced with needle punched fibers.

File Na 2NkA NG Gencunthetic Claw Liner 12920 — 1 af? Neremher 2117

The sodium bentonite components shall be 90 percent montmorillonite (from
Wyoming) and shall be applied to the base carrier sheet at no less than 1
pound/square foot.

Carrier sheets shall be woven polypropylene (3.1 0z/yd? minimum), and
nonwoven polypropylene (6 oz/yd2 minimum).

The sodium bentonite shall have a permeability no greater than 5x10-? cm/sec
at 5 psi confining pressure and 2 psi head.

PART 3 - EXECUTION

3.1

INSTALLATION

A.

GCL shall be installed in accordance with the manufacturer's
recommendations, and as shown on the Drawings and specified herein.

GCL shall be deployed over prepared and approved subgrade as soon as
practicable after completion of subgrade preparation. The material shall be
placed so as not to cause subgrade disturbance with the carrier side in contact
with the Drainage Sand. GCL shall not be deployed through standing water or
during rainfall. Care shall be exercised to ensure that no large stones or foreign
objects are trapped beneath the GCL.

CONTRACTOR shall only deploy GCL in an area that can be completed in one
day. Completion includes deploying, seaming, and covering with
Geomembrane. If inclement weather is approaching or is present, no
additional GCL shall be placed until the previously placed GCL is covered with
Geomembrane and seamed. GCL that becomes wet and hydrates shall be
removed and replaced at the discretion of ENGINEER at no additional cost to
OWNER.

Adjacent sheets of GCL shall be overlapped a minimum of 6 inches. A
continuous bead of granular sodium bentonite shall be applied between all
overlapping edges of material. On sideslopes, seams shall be perpendicular to
the contours. Seams shall be made in accordance with the manufacturer's
recommendations. Wrinkles and creases shall be removed from a sheet prior
to deploying and overlapping the adjacent sheet. CONTRACTOR shall clean all
dirt and debris from contacting surfaces.

Where cuts are required during installation, the exposed surfaces shall receive
powdered bentonite and be slightly hydrated.

All holes, tears, and cuts in the GCL shall be recorded and repaired in
accordance with the manufacturer's recommendations or as specified by
ENGINEER.

[END OF SECTION 02530]

P:\3000s\3066.09\Source Files\Type II App\Specifications\ Division 2 Specifications\02530 GCL.docx

Filo Na 2N6A NG Gensunthetir Clay Liner A292N — 2 af? Neremher 7117

SECTION 02550
GEOMEMBRANE
PART 1 - GENERAL
1.1. SCOPE OF WORK

A. CONTRACTOR shall furnish all labor, materials, tools, equipment, and
incidentals, and perform all operations necessary to furnish, deploy, seam, and
test the textured, high-density polyethylene (HDPE) Geomembrane
(Geomembrane) as described in this Specification and where indicated in the
Drawings.

1.2 DEFINITIONS

A. Geomembrane Manufacturer: The party responsible for the manufacturing of
the Geomembrane liner material.

B. Installation Contractor: The Installation Contractor shall be the Geomembrane
Manufacturer or a contractor approved by the manufacturer to install the
Geomembrane Manufacturer’s Geomembrane and who is trained and
experienced in field handling, storing, deploying, seaming, and QC testing of
Geomembrane for landfill applications.

C. Lot: A quantity of resin (usually the capacity of one rail car) used by the
Geomembrane Manufacturer. Each finished roll of Geomembrane will be
identified by a roll number traceable to the resin lot used.

D. Panel: Unit of GGomembrane seamed in the field and is larger than 100 square
feet (ft2).

E. Patch: Unit of Gomembrane seamed in the field and is smaller than 100 ft2.

F. CQA Consultant: OWNER will engage a CQA Consultant to verify the quality of
raw materials, the integrity and quality of seams and seaming processes
performed on-site, and the locations and results of all testing and repair work
performed. The CQA Consultant will observe and document the work, and in
particular, the quality control testing performed by the Installation Contractor.

H. Quality Control (QC): The Geomembrane Manufacturer shall implement QC
measures to ensure that the Gcomembrane provided meets the Specifications
provided herein. The Installation Contractor shall implement QC measures to
ensure Geomembrane installation is complete and is in compliance with the
Specifications contained herein. QC procedures include, but are not limited to
providing the Geomembrane Manufacturer's material QC certifications;
providing experienced and competent field staff; performing adequate

File No. 3066.09.00 Geomembrane 02550 - 1 of 14 December 2017

personnel training; performing QC testing during Geomembrane installation;
and maintaining records documenting QC items, such as, as-built panel layout,
locations and identifications of all repairs, locations and results of all
destructive and non-destructive field tests, as specified herein.

G. Subgrade Surface: The soil surface that immediately underlies geosynthetic
material.

1.3. SUBMITTALS

A. CONTRACTOR shall submit with the Bid for the Work the following

information.
1. Installation Contractor qualifications, including project descriptions with
references.

2. Brand of Geomembrane to be used, and a statement from the
Geomembrane Manufacturer detailing its properties and composition,
and a description of the GGomembrane Manufacturer’s QC program.

3. Draft warranties regarding quality of workmanship, materials, and long-
term performance of the GGoomembrane.

B. At least 15 days prior to manufacturing the proposed Geomembrane,
CONTRACTOR or Geomembrane Manufacturer shall submit the proposed
manufacturing dates for the rolls to be utilized. The Geomembrane
Manufacturer will coordinate with the CQA Consultant so that a representative
may be present to observe the manufacturing of the GGomembrane to be used
on the project.

C. No more than 15 days after the Notice of Award, the Installation Contractor
shall submit the following:

1. Shop Drawings showing extent, sizes, panel identification numbers, and
details of the Geomembrane installation, including recommendations for
terminating the material and proposed methods of sealing around
penetrations if different from those shown on the Drawings. Except for
special requirements due to configuration and/or terminating the
Geomembrane, maximum use of large-size panels shall be made.

2. Superintendent qualifications.

3. QC plans detailing proposed QC procedures.

4. The Geomembrane Manufacturer’s certification that the resin used meets
the Specifications. The QA/QC certificates issued by the Geomembrane
Manufacturer and the resin supplier shall be provided.

5. Samples ofall materials shall be submitted for inspection and acceptance.

D. Prior to shipping the Geomembrane from the factory, CONTRACTOR shall
provide the roll certifications to the CQA Consultant.

E. Prior to deploying Geomembrane, the Installation Contractor shall provide a
letter to the CQA Consultant indicating the acceptance of the Subgrade Surface.

File No. 3066.09.00 Geomembrane 02550 - 2 of 14 December 2017

During the course of the work, the Installation Contractor shall maintain as-
built drawings showing, but not limited to, panel layout and identification,
seam type and identification, repair locations and identifications, and
destructive test sample locations and identification. The Installation
Contractor shall submit working copies of the as-built drawings to the CQA
Consultant upon request, and shall submit a final copy to ENGINEER prior to
moving off the site.

1.4 QUALIFICATIONS OF INSTALLATION CONTRACTOR AND MANUFACTURER

A.

To perform the work of this Specification, the Installation Contractor shall have
demonstrated by previous experience its ability to do the Work. The required
previous experience shall consist of the following:

1. The Installation Contractor shall be approved and/or licensed to install
the products by the GGomembrane Manufacturer.
2. The Installation Contractor shall have _ successfully — installed

Geomembrane for not less than ten projects, or GGomembranes totaling a
minimum of 2,000,000 ft? similar in type to that specified herein, now
giving satisfactory service in the United States.

3. The Installation Contractor shall provide documentation for at least three
similar Gcomembrane projects of at least 200,000 ft? in continuous area.

The Geomembrane Manufacturer shall have manufactured and fabricated not
less than 10,000,000 ft? of GGomembrane similar to that specified herein.

The Installation Contractor shall provide the services of a competent field
technical representative throughout the installation of the Geomembrane and
all appurtenant structures and soils contacting the Geomembrane. The field
technical representative shall remain on-site and be responsible throughout the
installation of the Gcomembrane for Gcomembrane layout, seaming, patching,
testing, repairs, and other activities of the Installation Contractor. The field
technical representative shall have personally supervised and directed the
installation of a minimum of 2,000,000 ft? of GGomembrane.

All personnel performing seaming operations shall be qualified by experience
and by successfully passing seaming tests. At least one seamer shall have
experience seaming a minimum of 1,000,000 ft? of Gomembrane with a similar
method. This “Master Seamer” will provide direct supervision over less
experienced seamers; no seaming will take place without a Master Seamer
present.

All field seams shall be inspected over their full length in accordance with these
Specifications by the Installation Contractor in the presence of the CQA
Consultant or the CQA Consultant’s representative.

File No. 3066.09.00 Geomembrane 02550 - 3 of 14 December 2017