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same dimension as that for the dam. The top of the apron will be level with the channel bottom. <br /> A 6 inch high sill will be placed along the downstream end of the apron. Gully side slopes will <br /> be protected below the check dam by placing rip-rap from the toe of the apron to the top of the <br /> dam. <br /> The road crossing will be armored with rip-rap. Rip-rap material will consist of durable irregular <br /> rock having a minimum D-50 of 9 inches and a D-maximum of 12 inches. The access road <br /> crossing will be excavated 12 feet wide and 2 feet deep across the road upstream form the <br /> check dam location. <br /> Rip-rap will be imported and must be approved by the Project Manager prior to hauling to the <br /> site. <br /> Measurement and Payment <br /> There will be no measurement for payment for Task#7. Payment for Task#7 will be reflected <br /> in a lump sum bid under Item 7 on the Bid Schedule. <br /> Task 8-Stream Channel Armoring <br /> A section of unlined stream channel, south of Pond 15-P2, lies between upgradient and <br /> downgradient sections of the channel which are lined with rip-rap (See Map 3). The unlined <br /> portion of the channel will be lined with rip-rap resulting in a continuous, rip-rap lined channel. <br /> Approximately 100 feet of stream channel will be excavated and lined with riprap in accordance <br /> with drawing No. 5. The location of the channel is shown on figure 3. Excavated material will <br /> be placed evenly on both sides of the channel and angular rip-rap will be installed to a depth of <br /> 9 inches to 18 inches on the channel bed and side slopes. The resultant, rip-rap lined channel <br /> will be 3 feet deep from the original ground surface, the channel bottom will be 12 feet wide, <br /> and side slopes will be at a slope of 3HAV. Rip-rap material must consist of durable irregular <br /> rock having a minimum D-50 of 9 inches and a D-maximum of 18 inches. Rip-rap will be <br /> imported and must be approved by the Project Manager prior to hauling to the site. <br /> Measurement and Payment <br /> There will be no measurement for payment for Task#8. Payment for Task#8 will be reflected <br /> in a lump sum bid under Item 8 on the Bid Schedule. <br /> Task 9- Removal of Upland Diversion 22-D4 <br /> Upland Diversion Ditch 22-D4 is a 2,600 feet long ditch located uphill from the east-west access <br /> road (See Map 5). The ditch is approximately 14 feet wide. It will be decommissioned by <br /> excavating a series of cuts into the bottom and outside berm so that runoff from uphill is <br /> directed across the ditch and into existing drainages in the slopes below. The locations for <br /> each cut will be flagged or staked by the Project Manager. Their spacing will be at approximate <br /> 200 foot intervals with some variations as directed by the Project Manager. Each cut will be <br /> 10 <br />