Is Skidmark Geomembrane™ Safe for Lining Canals
No evidence has been found that recycled rubber has been used as irrigation canal liner, therefore it is necessary to address health and environmental concerns.
RMA Review of Health and Ecological Tests
Ground tire rubber has been used for athletic field and track surfaces and for play ground mats for a number of years. Because of the direct contact with children and athletes, numerous studies have been conducted world wide by both advocates and opponents of the use of ground rubber in these applications. A report titled "Review of Exposure to Recycled Tire Rubber Found at Playgrounds and Synthetic Turf Fields" can be downloaded from the RMA website. The report conclusion is reprinted below.
In Conclusion:
• The health and ecological risks associated with the use of ground rubber in consumer
applications, particularly playgrounds and athletic fields, were evaluated through a
thorough review of the literature;
• This review included studies from both advocates and opponents to the use of ground
rubber;
• No adverse human health or ecological health effects are likely to result from these
beneficial reuses of tire materials; and
• While these conclusions are supported by existing studies or screening risk
assessments, additional research would provide useful supplemental data regarding
the safety of recycled tire products and enhance the weight of evidence used in risk
communication.
Independent Water Test
In addition, Skidmark Geomembrane™ has been tested by an independent water testing laboratory and the Washington State criteria for protection of aquatic life in fresh water were met for TCLP. Also, the Phthalate Leaching test results did not exceed EPA criteria.
Fire Consideration
The possibility of a canal liner burning as a rusult of a grass fire has been considered. First, the liner installation design specifies covering the membrane with soil along the berm. During the irrigation season when grass fire risk is the highest, water will be flowing and a liner burn would be extremely unlikely. However, should a grass fire occur when the canal is empty, the liner resists burning when it is shielded from oxygen on one side as by the soil. The liner compound formulation will pass FMVSS-302 (Federal Motor Vehicle Safety Standard).