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Eco-Mat - Backfill

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  1. In general, slightly sandy soil (sandy loam) is ideal for subsurface irrigation; this is because “medium” textured soils have the greatest amount of water available to plants due to lower capillary forces. Follow recommendations from the soils report.
  2. Backfilling on top of the installed mat can be done by hand or via machine. To avoid damage to the mat and dripline, place at least 4 inches (10 centimeters) of compacted soil on top of the mat before using mechanized equipment.
  3. Level and compact the soil. Typical compaction for planted areas is between 80-85 percent relative density, which must be uniform throughout the planted area. Install and compact backfill soil at 2-inch (5-cm) lifts.
  4. Run the system again. Leave the zone running until the entire area is wet and there is consistent watering. It is common to see wetter and drier areas at first.
  5. Due to inconsistencies in the soil, burial depth, and slight differences in compaction, the first watering will help smooth these out.
  6. If any areas remain dry, check for loose compaction of soil or blocked emitters. If soil is dry down to the mat, then this is a red flag requiring attention prior to planting. Check the emitter by cutting open the fleece wrap around the dripline (being careful not to cut the dripline itself). If there is no flow at the emitter, replace this emitter section with a similar section of PLD. Connect easily with PLD-LOC fittings and cover again with the fleece sleeve.
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