Specifications include, but are not limited to: All mowing shall be performed in accordance with this Special Provision and to the satisfaction of the County Designee. The Contractor shall not mow areas which have been delineated by mowing stakes to allow for the natural regeneration of vegetation, unless otherwise directed by the County Designee. Vegetation around roadside obstacles such as delineator posts, culvert headwalls, sign posts, mailboxes, and guardrails shall be trimmed by the Contractor by mechanical means so as to present a neat and attractive appearance. Trimming shall be accomplished by the most effective way for the Contractor. The trimming shall be as close to a roadside obstacle as possible. Trimming shall be done as incidental to the right-of-way mowing cycle. Mowing and trimming of road mile must be completed within 5 days of each process. Both mowing and trimming of a road mile must be completed prior to being invoiced. The height of mowing shall be six (6) inches maximum height for all mowing operations.