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Construct a 6" both sides of the ATS harvest thick 4,000 psi, reinforced concrete curb along <br /> access driveway extension, tying the curb into the existing driveway with epoxyed reinforcing ~ <br /> C01-4a <br /> steel. (A curbing extension along both sides of a portion of the newly constructed ATS harvest : <br /> access driveway is required to transition from the new concrete perimeter curb to the access <br /> driveway sides. The curbing will prevent soil from eroding from the perimeter berm onto the <br /> floway surface, and it will increase harvesting efficiency by preventing harvested algae from <br /> 4 s r <br /> being washed off of the floway and onto the perimeter berm.) ' <br /> ri � it u n � <br /> Construct an 11 tall x 3 wide x 6 thick concrete L curb/retaining wall, 11 in length * r <br /> f s <br /> containing one#5 bar at the outermost east and west ends of the ATS harvest flumes. (This <br /> C01-4b enhancement is required to tie the termination of the new floway concrete perimeter curb with <br /> existing high density polyethylene (HDPE) liner material on the east and west harvest flume <br /> ends. Without this curb/retaining wall soil will erode into the harvest flume from the <br /> perimeter berm and have a detrimental impact on facility operations.) <br /> Repair two leaking ATS feed water manifold pipes by excavating the pipes, encasing the leaking <br /> C0 1-4c Joints with concrete, backfilling, and compacting. (HDPE welds on two of the ATS feed water <br /> manifold pipes have failed, causing significant underground leakage and loss of soil around the <br /> pipes. Because these pipes supply water to the ATS floway, it is critical that they are repaired <br /> before the facility is returned to service.) 5 <br /> Construct a 40'x 6' x 8" thick, 4,000 psi reinforced concrete apron along a portion of the west r N � <br /> side of the algae composting area. Reinforcing shall be#6 bars at 12" centers each direction <br /> C01-4d This reinforced concrete apron will connect the asphalt compost pad with the mulch and <br /> finished compost storage areas. The asphalt compost pad edges are cracking and breaking off �4� � � t E`t <br /> due to heavy equipment regularly traveling between the compost pad and the storage areas <br /> The concrete apron will prevent further cracking and significantly extend the life of the asphalt ) <br /> Cal <br /> O <br />