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R <br />} <br />• <br />l~ <br />covered by like material and having no vegetation. Also, this spoil will be feathered out so <br />that there is no noticeable mound or stockpile of material and a level loadout area is achieved <br />(See Cross Section 11. No spoil will be transported from this project site to the landfill. All <br />spoil will remain on site and will be placed as described above. <br />3. ASK 3-SECTION 15 STREAM REALIGNMENT. This TASK has been modified to include <br />TASK 3A, Upper 350 lineal Feet of Stream Channel Realignment (Drawing 2A) and TASK 36, <br />Lower 200 lineal feet of Stream Channel Realignment with riprap (Drawing 2B). The Work <br />Description is changed and clarified to include the following: <br />550 lineal feet of new channel will be excavated, shaped and contoured, not 400 lineal <br />feet. The location of the channel will be flagged by the Project Manager and will include <br />a more pronounced meander (See Map 61. <br />As clarification, the Channel is to be cut into the undisturbed ground to a depth of 3 feet <br />in accordance with drawing number 2A for the upper 350 feet and the fill material shall <br />be placed on the outside curve of the meanders to create a levee. <br />The lower 200 feet of new channel sha11 be cut into the undisturbed ground in accordance <br />with drawing number 2B and the fill material shall be place the outside curve of the <br />meanders to create a levee. <br />The lower 200 feet of new channel shall havngula iprap installed to a depth of 9 <br />inches to 18 inches on the channel bed and side slopes. Riprap must be keyed into the <br />channel bed and side slopes on the upstream and downstream ends. This riprap key will <br />consist of a 4 foot by 4 foot trench excavated into the finished channel and filled with <br />riprap. Riprap shall have a D-50 minimum of 9 inches and a D-Max of 18 inches. Larger <br />riprap will be acceptable on the floor of the channel as long as the final channel freeboard <br />is no less than 3 feet below the original ground surface (drawing 2B1• <br />Overall realigned stream channel grade shall be no steeper than a 20:1 slope within the <br />upper 350 feet and no steeper than 10:1 within the lower 200 feet of channel. <br />Riprap material for the road crossing must consist of durable river rock or irregular riprap <br />having a minimum D-50 of 9 inches and a D-Max of 18 inches. The driving surface <br />created must be smooth with no rocks sticking above the grade of the stream channel. <br />4. ASK 5-RECONSTRUCTION OF POND 22-P10. The Work Description is changed and clarified <br />to include the following: <br />The existing culvert at pond 22-P10 will be supplemented with a 36 inch diameter, 16 <br />gauge, Corrugated Steel Culvert ICSPI installed at a 20 percent slope. <br />Eliminate the last sentence which reads "Estimated length is 50 feet." <br />As clarification, the culvert backfill shall be mechanically compacted using a hand held <br />vibrating compactor. <br />2 <br />