Garvins_Pt_Pond_Liner_Spec_02540_Revised.pdf

DIVISION 2 SECTION 02540

SITE WORK POND LINER

02540-1

PART 1 GENERAL

1.01 WORK INCLUDED

A. The work of this Section includes furnishing and installing the pond liner in accordance with these specifications, the manufacturer’s specifications, and as shown on the drawings.

B. The liner shall be installed with no excessive wrinkles or puckers that could impede the flow of water and cause fish to be stranded.

1.02 RELATED SECTIONS

A. Submittals - Section 01300.

B. Materials and Equipment - Section 01600.

C. Site Preparation - Section 02100.

D. Earthwork - Section 02220.

1.03 SUBMITTALS

A. Manufacturer's product data.

B. Shop Drawings. - Shop drawings shall detail the proposed installation of all items specified herein. The shop drawings shall detail the location, size and method of attachment of all trench anchor systems and perimeter connections. In addition, the direction of all factory seams and location of all field joints shall be detailed.

C. Samples. - The following samples shall be provided:

1. Pond Liner, 12" by 12" minimum with a factory seam.

2. Pond Liner, 12" by 12" minimum with a field seam.

3. Batten strip (6 inch minimum).

4. Anchor Bolt (1 minimum).

02540-2

D. Installation Instructions. - The manufacturer's installation instructions shall indicate any special procedures and perimeter conditions required for the pond liner, field seams, bonding adhesive, and anchor bolts or embedment strip.

E. Certification. - Provide manufacturers certificates of compliance that all products and components of products meet or exceed the requirements, standards, and testing methods specified for raw liner materials, finished liner, bonding adhesive, and sealants.

F. Warranties. - The Contractor shall provide a warranty either from the Vendor proper or the Manufacturer of the material against defects in manufacture for one (1) year and material degradation in outdoor exposure for a pro-rated period of at least twenty (20) years from the date of installation.

PART 2 PRODUCTS

2.01 GENERAL

A. The materials supplied under these specifications shall be first quality products designed and manufactured specifically for the purposes of this type of work, and which have been satisfactorily demonstrated by prior use to be suitable and durable for such purposes.

2.02 DESCRIPTION OF MATERIALS

A. The pond liner shall consist of fish and plant friendly, ethylene-propylene-diene terpolymer (EPDM) synthetic rubber liner formed into uniform, flexible sheets with a thickness of 1.52 mm (60mils), designed to meet the tolerances of ASTM D7465 for EPDM geomembranes. The pond liner shall be GeoTough EPDM Geomembrane as manufactured by Carlisle Syntec Systems, or approved equal.

B. Vendors - The Fabricator and/or Vendor of the geomembrane liner used in this work shall be approved in writing by the membrane manufacturer. The installer of the geomembrane shall be an approved applicator.

C. The material shall have the minimum physical property characteristics as outlined below:

02540-3

Property

Test Method

Required Value (English Units)

Gauge (mils), nominal

Specific Gravity

Unit Weight

Thickness

Break Strength

Break Elongation

Tear Strength, min.

Puncture Resistance

Shore A Durometer

Ozone Resistance

Multiaxial Elongation

Oven Aging – Tensile Strength Die C

Oven Aging – Ultimate elongation, Die C

Oven Aging – Tear Resistance, Die C

Brittleness Point, Max oF

Water Absorption

Water Vapor Permeability, max.

Chronic Toxicity Screening

Linear Dimensional Change, max.

ASTM D-792

ASTM D-751

ASTM D-751

ASTM D-412

ASTM D-624

ASTM D-4833

ASTM D-2240

ASTM D-1149

ASTM D-5617

ASTM D-573

ASTM D-624

ASTM D-2137

ASTM D-471

ASTM E-96

EPA600/4-89/001

ASTM D-729

ASTM D-1204

1.1

.37 lb/ft2

.060 inch

1305 psi

300%

150 lbf/in

35 lbs

60 +/- 10

No Cracks

100%

1205 psi

200%

125 lbf/in

-49oF

+8%,-2%

0.03(typ), 0.045(max)

Tested/passes

+/- 1.0

02540-4

D. Interior catch basin grating walkway shall be heavy duty plank, galvanized, ASTM A- 653 G90, 10 gauge (0.1382” thick), 8 diamond, 2-inch channel depth, serrated surface, 36-inch wide by 144-inch long as manufactured by McNichols Co., or approved equal.

2.03 FABRICATION

A. Individual widths of geomembrane lining shall be factory fabricated into 40 foot x 200 foot panels so as to minimize field seaming during installation. Factory fabricated seams shall be constructed utilizing a vulcanized type seam. All factory fabricated seams shall have a strength equivalent to the specified sheet strength.

After fabrication, the panels shall be packaged so as to minimize handling at the jobsite. Each factory fabricated panel shall be given prominent, unique, indelible identifying markings indicating proper direction of unrolling and/or unfolding to facilitate layout and positioning in the field. Shipping boxes shall be water resistant, strong enough to prevent damage to the contents, and shall be banded to heavy duty wood pallets. Pallets shall not be stacked.

PART 3 EXECUTION

3.01 INSTALLATION

A. The Contractor shall provide all labor and equipment necessary to install the geomembrane liner. The vender shall provide a qualified Field Representative to insure the proper installation of the geomembrane.

B. The foundation surface to receive the geomembrane liner shall be prepared prior to the arrival of the Vendor’s Field Representative, and shall be in accordance with applicable paragraphs of Sections 02100, 02220 and 02540.

C. The membrane shall be closely fit and sealed to all concrete structures in accordance with the manufacturer’s recommendations and in accordance with ASTM D-6497;

Contractor shall submit drawings and methods for approval.

1. Stainless steel battens used to attach the membrane to the concrete shall be continuous over the entire distance if possible. Use of a number of short sections where one long section will work is not acceptable and will be rejected.

2. Stainless steel anchors used to attach the battens and the liner to the concrete shall be installed according to the anchor manufacturer’s instructions. Bent over anchors are not acceptable and will be rejected.

02540-5

D. Sufficient lining shall be provided to continuously cover all pond surfaces and to be firmly entrenched in burial trenches around the perimeter of the ponds as shown on the drawings.

E. Sealants used for attachment of the geomembrane liner to the catch basins shall be of the type required for the application and as recommended by the liner manufacturer.

F. Liner shall be installed without wrinkles. Liner shall be installed to prevent ponding of water. Liner installation will be rejected if ponding occurs.

G. Field seams shall be cement welded. Field seams shall be formed by lapping the edges of panels a minimum of four (4) inches. The seaming of adjacent panels shall be performed immediately after the relaxation of the geomembrane liner. All panels shall be installed without tension and without wrinkles. All seams on side slopes shall be parallel with the slope (i.e., up and down the slope). The contact surfaces of the panels shall be cleaned with water and dried in order to remove all dirt, dust, or other substance. Use only materials and methods approved by the geomembrane liner manufacturer. Field seams shall be tested by use of compressed air in accordance with

ASTM D-4437.

H. Pipe Penetrations: Provide a pipe boot for the 4-inch diameter pipe located at each catch basin utilizing materials and methods approved by the geomembrane manufacturer.

I. The Contractor shall provide and install wind ballast to prevent wind lifting of the pond liner when the pond is empty of water.

1. The ballast tubes shall be made of the same material as the liner.

a. The ballast tubes shall be a minimum of 7 inches in diameter.

b. Ballast tube length shall vary depending on distance to the bottom of the pond at the point of placement around the perimeter of the pond.

c. Ballast tube seams shall have the same strength as the geomembrane liner field seams.

2. The ballast tubes shall be anchored in the liner anchor trench and extend down the slope of the liner to the bottom of the pond.

a. After installation of the liner and ballast tubes in the anchor trench, the soil in the anchor trench shall be compacted as specified in Section 02220 and

02540-6 graded level with the surrounding dike surface and liner. Mounded soil over the anchor trench shall be rejected.

b. The ballast tubes shall be located on 30 foot intervals around the perimeter of the ponds.

c. The ballast tubes shall be filled with sand to within 3 feet of the anchor trench.

3. The ballast shall be installed such that the bottoms of the ponds are not obstructed.

J. Grating Walkway: Install as shown in contract drawings. Plank shall be installed as monolithic segment (no splices) and shall be cut to an appropriate length as determined by the on-site FWS project leader.

K. The pond shall be cleaned to remove all stones, dirt, and debris prior to final inspection.

3.02 REPAIRS

A. All necessary repairs to the geomembrane liner shall be made with the lining material itself and cemented as described in 3.01 F. for field seams. Patches shall be cut so as to cover the area to be repaired by a minimum of three (3) inches in all directions.

Patches shall be cut with rounded corners.

END OF SECTION 02530

END OF DIVISION 2