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Sector 3, Phase 1 Beach and Dune Restoration Project (IRC -1925) <br />Extent of Additional Erosion Observed Since Summer 2020 <br />February 2, 2021 BCC Meeting <br />Hurricane Teddy (September 2020), Tropical Storm Eta (November 2020) and several un -named <br />nor'easters. Observations in the field noted some areas of moderate beach and dune erosion from <br />these events. <br />EXTENT OF ADDITIONAL EROSION OBSERVED <br />At the time of project bidding and award, an estimated 307,000 cy of beach compatible sand was <br />identified as the amount that would be necessary for filling permitted fill template for Phase 1 of <br />Sector 3. Based on the current conditions identified by the recent pre -construction surveys, the <br />amount of sand needed to fill to the permitted fill template would need to be increased to <br />approximately 384,000 cy, an increase of approximately 25%, or 77,000 cy of material. <br />An increase of sand by 25% would fall within the contracted requirement for no adjustment for <br />unit price (Technical Specifications 19.2) in which the contractorwould be required to hold the per <br />cy price ($32.30/cy). Increasing the amount of sand necessary to fill to the permitted template <br />with no modifications is estimated to cost an additional $2,487,100. <br />Reductions to the permitted fill template are allowable under our permit. Staff has reviewed this <br />potential cost saving measure that would reduce the scope of the project by reducing the amount <br />of dune and berm being created which would reduce the amount of sand required, while still <br />providing much of the storm protection afforded by the project as it had been permitted. It is <br />anticipated that the amount of additional sand could be reduced by as much as 50% (38,500) cy. <br />A representative comparison of the Summer 2020 survey, pre -construction survey and permitted <br />fill template is included with this agenda item as Attachment 1. This figure graphically shows the <br />amount of additional erosion that has taken place over the past 6 months of storm and wave <br />activity. <br />FUNDING <br />The originally budgeted estimate for Phase 1 of the Sector 3 Beach and Dune Restoration Project <br />was $14,800,000. The contract was awarded to Guettler Brothers Construction LLC in the amount <br />of $11,987,010. Full funding for Phase 1 of the Sector 3 Beach and Dune Restoration Project was <br />available which included portions of the Federal and State grant amounts shown belowforSector <br />3, as well as local funding, originally estimated to be $7,572,823 from the Beach Restoration Fund. <br />The additional $2,487,100 needed to fund the extra 77,000 cy of material will be funded from the <br />Beach Restoration fund. The contract awarded to Guettler Brothers Construction LLC will be <br />revised to reflect this change, bringing the total contract for Phase 1 to $14,474,110 and the total <br />revised project cost to $15,475,000. Given the increased project cost, a budget amendment in the <br />amount of $675,000 will have to be processed to add additional funding to the Sector 3 project <br />account. Because these additional cubic yards are attributed to background erosion and not a <br />specific storm event (IRC was not declared for the storms mentioned above), no additional FEMA <br />206 <br />