Common use of Prevention Clause in Contracts

Prevention. 2.1 Where no invasive plants are detected, Lessee should use only PA Department of Agriculture certified seed and weed free soil, dirt, and mulch whenever feasible. If materials certified as weed free cannot readily be obtained, the source of materials being used shall be inspected for invasive plants during the growing season by a qualified botanist and used only if deemed weed-free. 2.2 Mulching with straw rather than hay is recommended to reduce the possibility of introducing invasive species propagules. 2.3 Where heavy infestations of Japanese stiltgrass (Microstegium vimineum) are detected during pre-construction surveys, a seed mix of Autumn bentgrass (Agrostis perrenans) and deer tongue (Dichanthelium clandestinum) should be planted as aggressive competition against the seed-banked invasive Japanese stiltgrass. Seeding specifications will be provided by the District Forester. As an alternative, application of herbicide to large patches of Japanese stiltgrass during the summer with a 2% glyphosate solution in water mixed with surfactant may be utilized at the direction of the District Forester. 2.4 Lessee at its option may, prior to bringing equipment into un-invaded areas or onto state forest land, clean its equipment in an appropriate manner (see xxxx://xxx.xx.xxx.xx/eng/pubs/pdf/05511203.pdf) to remove plant parts such as rhizomes and seeds that might be carried on tires and the equipment undercarriage, which may help prevent the spread of invasive species onto adjacent lands. 2.5 Pre-treatment of identified invasive species infestations of herbaceous species or species that reproduce prolifically from rhizome/root segments with herbicides prior to construction may be performed at the direction of the District Forester.