Storm Water Extension Clause Samples

Storm Water Extension. 1. One complete set of grade stakes and suitable offset stakes at each storm drain and intermediate grade stakes at an offset acceptable for construction at 50 foot intervals between storm drains. Developer shall provide to the City one (1) set of grade sheets (cut sheets) showing hub to storm water invert. 2. Sufficient marks to locate all surface features such as manhole covers, valve box covers, storm drain grades, and all other surface features requiring exposure to the surface of the roadway. 3. Double 20-foot offsets for each corner of storm structures such as vaults or tanks. Developer shall perform all property surveys necessary for placement of the construction stakes including surveys of easements. Developer shall provide to the City drawings showing the bearing and dimensions of all property lines, ties to adjacent subdivisions and section control and the calculated closure of all control traverses. All surveying and construction staking shall be performed by a professional land surveyor licensed in the state of Washington.