Overview of Canal Lining Projects. Montana Association of Dam and Canal Systems October 5 and 6, Jack Haynes EDC Canal Linings, LLC Owner

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1 Overview of Canal Lining Projects Montana Association of Dam and Canal Systems October 5 and 6, 2011 Jack Haynes EDC Canal Linings, LLC Owner

2 Scope of Study 34 Test Sections installed 18 Exposed Geomembranes 5 Concrete (shotcrete or grout-filled mattress) 7 Spray or Wet Applied Membranes 4 Geomembranes with Concrete Cover Size 500 to 1,500 linear ft. (15,000 to 30,000 sq. ft.) Age 1 to 10 years

3 Types of Water Barrier Membranes (Geomembranes) Polyvinyl Chloride (PVC) High Density Polyethylene (HDPE) Low Density Polyethylene (LDPE) Linear Low Density Polyethylene (LLDPE) Very Flexible Polyethylene (VFPE) Very Low Density Polyethylene (VLDPE) Chlorosulfonated Polyethylene (CSPE) Reinforced Metallocene (mpe)

4 Types of Water Barrier Membranes (Geomembranes) Flexible Polypropylene (fpp) Prefabricated Bituminous Geomembranes (PBGM) Geosynthetic Clay Liners (GCL) Ethylene Propylene Diene Monomer (EPDM) Polyurethane Polyethylene Geocomposite (Composite)

5 ORIGINAL STUDY CONDITIONS TYPICAL BASALT SUBGRADES

6 EPDM

7 Ochoco Irrigation District Exposed 45-mil EPDM Installed November 1999

8 Ochoco Irrigation District Exposed 45-mil EPDM Installed November 1999

9 Ochoco Irrigation District Exposed 45-mil EPDM 11 years old

10 C C Hop Farms Exposed 45-mil EPDM Installed April 2008

11 Valicoff Farms Exposed 45-mil EPDM Installed May 2007

12 Valicoff Farms Exposed 45-mil EPDM Installed May 2007

13 Prefabricated Bituminous Geomembranes

14 Ochoco Irrigation District Exposed 160-mil Bituminous Geomembrane Installed November 2000

15 Ochoco Irrigation District Exposed 160-mil Bituminous Geomembrane Installed November 2000

16 Ochoco Irrigation District Exposed 160-mil Bituminous Geomembrane 1½ years old

17 Ochoco Irrigation District Exposed 160-mil Bituminous Geomembrane 11 years old

18 Juniper Flat Irrigation District Exposed 160-mil Bituminous Geomembrane Installed October 1997

19 Juniper Flat Irrigation District Exposed 160-mil Bituminous Geomembrane 4 years old

20 Polyethylene Composites with Shotcrete Cover

21 Arnold Irrigation District Polyethylene Geocomposite with 3 inch Shotcrete cover Installed February 1992

22 Arnold Irrigation District Polyethylene Geocomposite with 3 inch Shotcrete cover 19 years old

23 Quincy-Columbia Basin Irrigation District Polyethylene Geocomposite with 3 inch Shotcrete cover Installed 2010

24 Columbia Basin Irrigation District Polyethylene Geocomposite with 3 inch Shotcrete cover Installed Feb. 2004

25 Composites with Earth Cover

26 Quincy-Columbia Basin Irrigation District Polyethylene Geocomposite with Earth cover Installed Nov. 2005

27 Quincy-Columbia Basin Irrigation District Polyethylene Geocomposite with Earth cover 5 years old

28 Quincy-Columbia Basin Irrigation District Polyethylene Geocomposite with Earth cover Installed 2004

29 Quincy-Columbia Basin Irrigation District Polyethylene Geocomposite with Earth cover Installed Feb. 2004

30 Quincy-Columbia Basin Irrigation District Polyethylene Geocomposite with Earth cover 7 years old (2004)

31 Blackfeet Indian Tribes Polyethylene Geocomposite with Earth cover Installed Oct. 2009

32 Blackfeet Indian Tribes Polyethylene Geocomposite with Earth cover Installed Oct. 2009

33 Composites Exposed 8oz nonwoven-geotextile top and bottom with Polyethylene center or 12oz nonwoven geotextile top and bottom with Polyethylene center

34 Bitter Root Irrigation District Polyethylene Geocomposite Installed October 2001

35 Bitter Root Irrigation District Polyethylene Geocomposite Installed October 2001

36 Bitter Root Irrigation District Polyethylene Geocomposite 1 year old

37 Bitter Root Irrigation District Polyethylene Geocomposite 1 year old

38 New Sweden Irrigation District Polyethylene Geocomposite Installed 2006

39 New Sweden Irrigation District Polyethylene Geocomposite Installed 2006

40 New Sweden Irrigation District Polyethylene Geocomposite Installed 2007

41 Cost Construction cost (2002 dollars): Exposed Geomembranes $ $1.53 sq ft Concrete alone $ $2.33 sq ft Geomembranes with Concrete Cover $ $2.54 sq ft Spray or Wet applied membranes $ $4.33 sq ft

42 How are they performing? Seepage Reduction Initial 90 to 99 percent 5 years 80 to 95 percent 10 years 70 to 95 percent Maintenance Very little through 10 years Exposed Membranes - Subject to mechanical damage Concrete - Minor repairs Durability Concrete years Exposed Geomembranes years Spray or wet applied Geomembranes over Steel Flume years over Rocky Subgrades < 1-5 years over Concrete lined ditch?

43 Benefit-Cost Analysis Lining Fluid or Wet applied Membranes Construction Cost ($/square ft) Durability (years) Maintenance Cost ($/square ft-yr) Eff. At Seepage Reduction (%) B/C Ratio $1.13 $ $ Concrete $ $ $ Exposed Geomembranes Geomembranes With Concrete Cover $ $ $ $ $ $

44 Construction: Exposed Geomembrane Canal Velocities Side Slope Friction Items to Think About Geomembranes with Concrete Cover Concrete Thickness Damage to Geomembrane (when dragging shotcrete hose over the lining)

45 Questions and Comments?

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