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north east of the sediment pond as delineated in the field, or placed against the excavated bench cuts. It is assumed that the terrace location will be used for excavated material from the lower portion of the drainage course construction. Prior to depositing excavated material at either the terracelocation or against the excavated bench cuts, existing vegetation and soils to a 24" depth-will be graded. off and stockpiled. Final grade at the terrace location once hauling has been completed will not exceed a 3:1 slope in any direction. Stockpiled vegetation and soils will be evenly redistributed over the deposited material from drainage. course construction upon completion of earthmoving procedures. If any trash is encountered during excavation for channel construction, trash will be hauled off to the nearest County approved landfill-site. Measurement and Payment No unitmeasurement for payment will be madefor Item 2. A lump-sum bid for drainage construction will be reflected under Item 2 of the Bid Schedule. The price bid will include all of the CONTRACTOR'S cost of whatever nature to provide a drainage channelinaccordance withthe-drawing and specifications, including all labor, equipment, excavation, hauling, regrading, operating supplies, salaries of operators andany other expenses incidental to the operation of the equipment irr the performance of the channet construction in accordance with this specification and bid item. TEM 3 - DRAINAGE CONSTRUCTION -ROCK OUTCROP TO SLOPE CHANNEL An eight (8) foot wide, 4' deep drainage course will be constructed to provide positive drainage from the location where the slope channel day-tights on the bench to the rock ontarop ledge- as located in the field. The drainage will be constructed according to the attached Drawing 1, Drainage Course Cross Section WITHOUT the riprap requirements. Check dams will be contracted at 50' imervals from with riprap per attached Drawing 1. Check dam riprap, available on-site, will consist of an everily distributed combination of 60% minimum 4' diameter rockriprap, 20% 2' to 4' diameter rock and 20% 12" to 18" rock. The 4' diameter rock will be keyed imo the bottom of the constructed- 3: t channel through excavation placement to a depth between 18" and 24". The check dam will be 6' in slope length constructed the eat'se width ofthechannel. Side slopes to the constnrcted charmek will be at a maximum 3:1 scope. Pasitive drainage will be maintained from the bench cut to the east, into the drainage channel. A~faterial as a resuh of drainage- course construction maybe excavated and hauled to or graded- against the excavated bench cuts. Prior to depositing or grading excavated material against the excavated bench cuts, existing vegetation and soils to a 24" depth will begraded off and stockpiled Stockpiled vegetation and soils will be evenly redistributed over the deposited material from drainage course construction upon completion of earthmoving procedures. If arry trash is encoumered daring excavation for charmel construction, trash will be hauled off to the nearest County approved landfill site. Measnrement and' Payment Na amt meas2uement for paymerrt will be-made for Item 3. A lump sarrr bid for drainage construction will be reflected under Item 3 of the Bid Schedule. The price bid will include all of the CONTRACTOR'S cost of whatever nature to provide a drainage channel in accordance with the drawing and specifications, including all }abor, equipment, excavation, hauling, regrading, operating supplies, salaries of operators andany other expenses incidental to the operation of the equipment in the performance of the charmet cronstructiorr irr accordance with this spenifrcatiorr and- bfd item.