Pawleys Island Nourishment Project

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1 Pawleys Island Nourishment Project Town of Pawleys Island Owner Coastal Science & Engineering - Engineer 6/29/2018 1

2 Beach Condition Basics Beach profiles are a function of constructive and destructive forces (Waves, tides, gravity) and sand grain size. Sand moves alongshore and cross-shore. Profile changes with changes in wave size and direction, tide level, and sediment supply 2

3 Why beaches erode Lack of sediment supply Storms Sand trapping from structures or natural features Changes in inlets and deltas Seasonal trends Sea level changes 3

4 The Beach Cycle Tides & Storm Surges Control The Water Level - But Waves Do The Work! Photos Courtesy: U of Mass Coastal Research Group & U of South Carolina Coastal Research Division

5 Pawelys Island Beach Condition Volume deficit of ~600, ,000 cy along southern half of island. Accretional north of the pier. Relatively low erosion rates (~2 ft/yr). South end critically eroded. 5

6 Pawleys Island Beach Volume 6/29/2018 6

7 Volume Deficit 6/29/2018 7

8 July 1981 March th Avenue South February 1987 September 2001 May 2011

9 May th Avenue South (Continued) Before and After Hurricane Matthew April 2017

11 Beach Management Every beachfront community needs a long-term beach management plan and dedicated funding sources Proactive maintenance improves beach condition, habitat, property values, and storm protection Many communities initiate long-term strategies after crisis projects Monitoring before and after projects improves designs and aids in planning. Required for FEMA. 6/29/

12 Project Scope 6/29/

13 Project Scope Base Bid 700,000 cy over 13,900 ft (50.4 cy/ft avg) Reach 1 410,000 cy over 4,800 ft (avg fill 85 cy/ft) Reach 2 195,000 cy over 4,300 ft (avg fill 45 cy/ft) Reach 3 95,000 cy over 4,800 ft (avg fill 19.8 cy/ft) Alt Bid Up to 400,000 cy additional sand 205,000 cy in Reach 1 155,000 cy in Reach 2 40,000 cy in Reach 3 6/29/

14 Project Scope Berm at +6 ft Tolerance of 0.5 ft along berm Contractor shall protect existing groins No work under houses Fill template may be adjusted based on conditions at time of construction 6/29/

15 6/29/

16 6/29/

17 Present Conditions Reach 3 Reach 1 6/29/

18 Access Main access is at parking lot at south end of project area. Accesses at Hazard, Pritchard, 1 st or 2 nd, and north end are available, but would need to be repaired. Any damage to access points is contractor s responsibility 6/29/

Borrow Areas 2.8 3.8 miles from center of fill Area P1 5 ft disturbance limit, 0.

19 Borrow Areas miles from center of fill Area P1 5 ft disturbance limit, 0.476mm, 24% fine shell Area P2 4 ft disturbance limit, mm, 20% fine shell Area P3 4.5 ft disturbance limit, 0.561mm, 25% fine shell 6/29/

20 Sand Quality Areas of mud or coarse material are present below allowed excavation limits Permit allows for excavations up to 7 ft Dredge will relocate if unsuitable material is encountered 6/29/

21 Expectations During Construction Work will occur 24/7 including holidays Staging on unvegetated beach areas or in parking area at south end No work on or under decks, patios, porches, or erosion control structures Beeping backup alarms will be heard 6/29/

22 Expectations of Nourished Beach Sand color and texture may change along the beach and over time Adjustment of the profile Escarpments Wind-blown sand accumulation Washover/ponding during king tides/storms 6/29/

23 Edisto Beach Nourishment /29/

24 Edisto Beach Nourishment /29/

25 Edisto Beach Nourishment /29/

26 Fill Adjustment 6/29/

27 BEACH RENOURISHMENT PROJECT 2018

28 PAST BEACH WORK 1949 TO 1990 STATE BUILT 23 GROINS & NORTH END JETTY FEDERAL GOVERNMENT FUNDED THE ADDITION OF 292K CUBIC YARDS OF SAND FOLLOWING HURRICANE HUGO 1998 TO 1999 GROINS WERE REBUILT AND 272K CUBIC YARDS OF SAND WERE ADDED TO 13,600 LINEAR FEET OF BEACH SAND TAKEN FROM VERY SOUTH END TOTAL COST OF PROJECT WAS $2 MILLION DOLLARS. $1.3 MILLION COVERED BY STATE AND THE REST WAS PAID FOR BY TOWN

29 PAST BEACH WORK 2013 TO 2018 HURRICANE SANDY CAUSED SIGNIFICANT EROSION. TOWN AUTHORIZED GROIN REPAIR PROJECT, BUT HURRICANE JOAQUIN HIT BEFORE WORK WAS DONE HURRICANE JOAQUIN REMOVED OVER 100K CY OF SAND HURRICANE MATTHEW REMOVED 88K CY OF SAND HURRICANE IRMA REMOVED 180K CY OF SAND SAND SCRAPING WAS DONE TO RESTORE PRIMARY DUNE FOLLOWING ALL THREE STORM EVENTS TOTAL COST TO PERFORM SAND SCRAPING $740K

30 USACE PROJECT 2004 TOWN REQUESTED USACE STUDY BEACHES AND DEVELOP A STORM DAMAGE PROTECTION PLAN STUDY RESULTED IN PROPOSED PLAN TO RENOURISH THE SOUTHERN THIRD OF THE ISLAND. PROJECT WAS FOR 664,400 CY COVERING 7,500 LINEAR FT TOTAL COST OF PROJECT $8,975,000 FEDERAL SHARE $5.8 MILLION TOWN SHARE $3.2 MILLION (SPLIT WITH STATE) PROJECT NEVER FUNDED BY CONGRESS

31 BEACH COMMITTEE COMMITTEE WAS MADE UP OF 11 PROPERTY OWNERS REPRESENTING ALL AREAS OF THE ISLAND MET 4 TIMES OVER THE COURSE OF 14 MONTHS PRESENTED WITH ALL HISTORICAL INFORMATION REGARDING PAST BEACH WORK & THE TOWN S OPTIONS MOVING FORWARD MADE RECCOMENDATIONS TO COUNCIL

32 BEACH COMMITTEE RECCOMENDATIONS APPLY FOR COST SHARING GRANT FUNDS FROM THE STATE OF SOUTH CAROLINA (PRT) AUTHORIZE CSE TO BEGIN WORK ON DESIGNING PROJECT & TO GET PROJECT BIDS ASAP PURSUE BORROWING UP TO $2 MILLION FOR THE PROJECT MOVE FORWARD WITH 725K CY BEACH RENOURISHMENT PROJECT

33 PROJECT DETAILS STATE AND FEDERAL PERMITS ARE FOR A 1.1 MILLION CY PROJECT FROM THE MOST SOUTHERN GROIN TO JUST NORTH OF THE PIER PERMIT APPLICATIONS WERE SUBMITTED IN DECEMBER 2016, BOTH PERMITS APPROVED AND ISSUED APRIL 2018 PROJECT WAS RELEASED FOR PUBLIC BID ON MAY 1, 2018

34 BID DETAILS BASE PROJECT OF 700K CUBIC YARDS OF SAND UNIT COST FOR EACH ADDITIONAL CY ABOVE THE BASE PROJECT OF 700K CY GIVES TOWN THE FLEXIBILITY TO TAKE ON A PROJECT ANYWHERE BETWEEN 700K 1.1MILLION CY SIZE OF PROJECT WILL DEPEND ON BID RESULTS 3 DREDGERS SUBMITTED BIDS TO COMPLETE PROJECT

35 BID RESULTS 700K CY MARINEX GREAT LAKES WEEKS MARINE SAND $8,106,000 $8,736,000 $9,275,000 MOBILIZATION $2,759,000 $5,375,000 $3,250,000 TOTAL CONSTRUCTION $10,865,000 $14,111,000 $12,525,000 ENGINEERING $600,000 $600,000 $600,000 TOTAL PROJECT COST $11,465,000 $14,711,000 $13,125,000

36 BID RESULTS 1.1 M CY MARINEX ($10.33) GREAT LAKES ($12.86) WEEKS ($11.75) SAND $8,106,000 $8,736,000 $9,275,000 MOBILIZATION $2,759,000 $5,375,000 $3,250,000 ADDITIONAL SAND (400K) $4,132,000 $5,144,000 $4,700,000 TOTAL CONSTRUCTION $14,997,000 $19,255,000 $17,225,000 ENGINEERING $600,000 $600,000 $600,000 TOTAL PROJECT COST $15,597,000 $19,855,000 $17,825,000

37 PLAN TO PAY FOR PROJECT BEACH FUND CREATED IN 1999 WHEN TOWN ADOPTED 3% LOCAL ACCOMMODATIONS TAX % OF REVENUE COLLECTED WENT TO BEACH FUND 2017-CURRENT 80% OF REVENUE COLLECTED GOES TO BEACH FUND BEACH FUND BALANCE WILL BE AROUND $6 MILLION WHEN WE START PROJECT

38 PRT GRANT FUNDS STATE WILL COVER 50% OF ELIGIBLE COSTS OF PROJECT AREA OF BEACH RECEIVING FUNDS MUST MEET THE STATE S DEFINITION OF ADEQUATE PUBLIC ACCESS TO BE ELIGIBLE FOR PROGRAM BEACH FUND BALANCE WILL BE AROUND $6 MILLION WHEN WE START PROJECT STATE DETERMINED ONLY 65% OF PROJECT AREA HAD ENOUGH PUBLIC ACCESS TOWN WAS ABLE TO INCREASE THIS TO 80.46%

39 LOAN TAKE ON DEBT AND BORROW THE REMAINING FUNDS DEBT TO BE PAID BACK BY FUTURE LOCAL ACCOMMODATIONS TAX COLLECTIONS

40 TOTAL DEBT? MINIMUM PROJECT FULL PROJECT CUBIC YARDS OF SAND 700,000 1,100,000 TOTAL PROJECT COST $11,465,000 $15,597,000 PRT COST SHARE (80.46% PUBLIC) $4,612,370 $6,274,673 COST TO THE TOWN $6,852,631 $9,322,327 BEACH FUND $5,700,000 $5,700,000 SHORT FOR CONSTRUCTION ($1,152,631) ($3,622,327)

41 796K CY PROJECT IS THE LARGEST PROJECT POSSIBLE WITHOUT AN ADDITIONAL SOURCE OF FUNDING + 96,000 cu yds CUBIC YARDS OF SAND 796,000 TOTAL PROJECT COST $12,456,680 PRT COST SHARE (80.46% PUBLIC) $5,011,322 COST TO THE TOWN $7,445,358 BEACH FUND $5,700,000 SHORT FOR CONSTRUCTION ($1,745,358) SAND $8,106,000 EXTRA SAND ($10.33 per cu yd) $991,680 MOBILIZATION $2,759,000 TOTAL CONSTRUCTION $11,856,680 ENGINEERING $600,000 TOTAL PROJECT COST $12,456,680

42 BEACH FUND OVER 10 YEARS ,000, , , , , , ,729 1,014,984 1,457,118 1,920,926 2,407,229 BEACH FUND 6,000, , , , , ,584 2,407,229 1,920,926 1,457,118 1,014, ,

43 RECAP 796K CY PROJECT FROM MOST SOUTHERN GROIN TO SLIGHTLY NORTH OF THE PIER FUNDED BY BEACH FUND BALANCE BUILT UP OVER 19 YEARS, PRT GRANT FUNDS & $1.7 MILLION LOAN FUTURE REVENUE FROM LOCAL ACCOMMODATIONS TAX WILL BE USED TO PAY OFF DEBT BEACH FUND BALANCE WILL REMAIN LOW UNTIL DEBT IS REPAID AND FUND BALANCE CAN START TO REBUILD A LONG TERM PLAN FOR FUNDING FUTURE RENOURISHMENT WORK MUST BE EXPLORED SURVEY WILL BE ED MONDAY TO ALL PROPERTY OWNERS

44 QUESTIONS & COMMENTS WE WILL CALL ON EACH PERSON THAT SIGNED UP TO SPEAK, ONE AT A TIME. EACH INDIVIDUAL WILL BE GIVEN 5 MINUTES TO SPEAK AND ASK QUESTIONS. AMPLE TIME WILL BE GIVEN FOR A RESPONSE AND FOLLOW UP COMMENTS THOSE WISHING TO SPEAK ARE REQUESTED TO COMMENT ON THE PROJECT, NOT INDIVIDUALS, AND TO TREAT OTHERS WITH COURTESY AND RESPECT

45 Project Cost 6/29/

EXECUTIVE SUMMARY. OBJECTIVE: To award Bid No to for Naples Berm Restoration to Eastman Aggregate in the amount of $946,

EXECUTIVE SUMMARY. OBJECTIVE: To award Bid No to for Naples Berm Restoration to Eastman Aggregate in the amount of $946, 1 of 49 EXECUTIVE SUMMARY Recommendation to approve award of Bid No. 11-5637 for Naples Berm Restoration to Eastman Aggregate Enterprises, LLC as outlined in the attached proposal submitted on 1/12/2011