Admin Order 58-14-06 - Laserfiche WebLink

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Four methods (or combinations of them) are generally used to install the vegetation: vegetation mats, plugs/ potted plants, sprigs, and seeds. 1. Vegetation mats are sod -like, pre- germinated mats that achieve immediate full plant coverage. They provide immediate erosion control, do not need mulch, and minimize weed intrusion. They also need minimal maintenance during the establishment period and little ongoing watering and weeding. Plugs or potted plants may provide more design flexibility than mats. However, they take longer to achieve full coverage, are more prone to erosion, need more watering during establishment, require mulching and more weeding. 2. Sprigs are hand - broadcast They require more weeding, erosion control, and watering than mats. 3. Seeds can be either hand- broadcast or hydraseeded. Like sprigs, they require more weeding, erosion control, and watering than mats. 4. Soil coverage to prevent erosion - shall be established immediately upon installation by using mulch, vegetation mats, or other approved protection method. Ninety- percent (90%) plant coverage should be achieved within 2 years. Temporary irrigation to establish plants is recommended. A permanent irrigation system using potable water may be used, but an . alternative means of irrigation, such as air conditioning condensate or other non potable sources, is recommended. Alternative sources should be analyzed to determine if the source has chemicals that might harm or kill the vegetation. Growth Medium (, Dill: The growth medium is generally 2 to 6-inches thick and well drained. It weighs from 10 to 25 pounds per square -foot when saturated. A simple mix of one - fourth topsoil, one - fourth compost, and one -half pumice perlite may be sufficient for most applications. Some companies have their own growth medium specifications. Other components may include digested fiber, expanded clay or shale, or coir. Stornmater Management Manual 2 -13 Eugen 2014