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Page 4 of 5 <br />Answer: 12 -inch Class II PolyPropylene pipe will be required instead of the 12 -inch RCP due to the <br />RCP pipe not being available. <br />Question: Soil bores on project? <br />Answer: No soil bores were taken as part of the design process. IRFWCD dictated the diameter <br />of pipe and general location. <br />Q: When the 4th St (90th Ave)? did it get washed out when the pipe failed the canal has some <br />broken concrete in it? Is that going to need to be removed? <br />A: The portion of the road that got washed out was 4th St, 901h Ave was not entirely impacted <br />by that. The broken concrete appears to be from previous bank rip -rap installation and will <br />need to be removed within the limits of excavation. <br />Q: Contractor noted the broken concrete they were referring to was at the base of canal <br />A: That was material end of the pipe was likely rip rap reinforcement installed by IRC Road & <br />Bridge or by IRFWCD. The existing rip -rap will need to be removed and replaced with new rip <br />rap within the limits of construction, The Contractor will need to consider rip rap placement <br />when setting up their dewatering/cofferdams. <br />Q: Is there a separate item for sheet pile or is it included? <br />A: Temporary Sheet pile is to be included in the cost of pipe as the quantity will be based on <br />the Contractors means and methods. <br />Q: Are we leaving the bell and spicket on the end? <br />A: Yes -the pipe ends are to remain unmitered per IRFWCD's preferences. <br />Q: Do we know the flow of the canal? <br />A: James Ennis indicated that IRC Public Works will get the canal flow and depth and sheet pile <br />requirements from IRFWCD. <br />Q: Are we tying the 12in HDPE into 96 RCP? <br />A: Yes. <br />Q: Gas main conflict - are they deflecting it under or over? <br />A: The gas utility will relocate the existing under and around in the culvert, as it is not currently <br />in their easement. The installation will be by directional drilling it and will not impact <br />construction. Gas company was notified several weeks ago and will have the existing main <br />relocated prior to construction. It will be reinstalled after construction is complete. <br />Q: Notification once started that work will be started? <br />A: Notification yes, but the pipe will be removed prior to your work starting and you will need <br />to do Sunshine 811 before digging. <br />Q: Does the MOT Plan have to be signed & sealed by P.E.? <br />A: Yes, the Contractor's MOT plan must be signed & sealed by a PE that the Contractor is <br />responsible for obtaining. <br />FAPurchasimMids\2020-2021 FY (2021000)\2021045 4th Street Culvert at 90th Ave\Addendum 2\1RC-2022_PREl3lD_MiN- <br />Final_20210421 (003).doc <br />