A. The construction contractor shall take the following measures to minimize the risk of noxious weed spread when working on Shoshone County sponsored projects utilizing "Latest Date Performance Standards".
1. Contact: The contractor shall contact the County Weed Superintendent prior to starting work in each area to discuss specific noxious weed concerns and requirements. Shoshone County Weed Superintendent, 700 Bank Street, Ste. 35, Wallace, ID 83873 (208)753-5475.
2. Construction Techniques:
a. Ground disturbance shall be minimized by the use of the least intrusive construction techniques practicable for a given location. Off right-of-way travel will be strictly controlled.
b. The contractor shall avoid unnecessary scraping or blading vegetation whenever possible.
c. The contractor shall avoid transporting soil contaminated with noxious weeds.
d. Hay and straw used for mulching shall be certified by the State as free of any noxious weeds.
3. Vehicle Washing:
a. The contractor shall wash vehicles after crossing through areas of known weed infestations as dictated by County Weed Superintendent.
b. The contractor shall wash vehicles and construction equipment prior to entering Shoshone County.
c. The contractor shall wash vehicles periodically during construction. Frequency of washing will depend on frequency of weed populations encountered as determined by the County Weed Superintendent.
d. The contractor shall wash all vehicles when leaving construction areas.
4. Revegetation:
a. The contractor shall use approved seed mixes for revegetation as dictated by the County Weed Superintendent.
b. The contractor shall revegetate disturbed areas within seven (7) days of completion or as directed by the County Weed Superintendent.
c. The contractor shall use weed-free, native seed mixes for revegetation. No State or County noxious weed shall be included in revegetation seed mixes.
d. The contractor shall confer with the County Weed Superintendent to determine appropriate seed mixes. The contractor shall use mixes or species recommended by agency personnel within each weed district where available. Native species shall be used except in cases where non-persistent exotic species are preferable in order to establish vegetative cover quickly.
e. The contractor shall seed all disturbed areas with seed mixtures. The seed mixture shall be planted in the amounts specified in pounds of pure live seed (PLS/acre). There shall be no primary or secondary noxious weed seed in the seed mixture. Seed shall be tested and the viability testing of seed shall be done in accordance with State law(s) and within nine (9) months prior to purchase. Commercial seed shall be either certified or registered seed. The seed mixture container shall be tagged in accordance with State law(s) and available for inspection by the County Weed Superintendent. If a drill is used, the drill shall be equipped with a depth regulator to ensure proper depth of planted seed where drilling is possible. The seed mixture shall be evenly and uniformly planted over the disturbed area (smaller/ heavier seeds have a tendency to drop to the bottom of the drill and are planted first). The contractor shall take appropriate measure to ensure this does not happen. Seed may be broadcasted if needed. When broadcasting the seed, the pounds per acre are to be doubled. Broadcast seed will be harrowed or raked into the soil. The seeding shall be repeated until a satisfactory stand is established as determined by the County Weed Superintendent. Evaluation of growth will not be made before completion of the second growing season after seeding. (Ord. 154, 10-4-2016)