SUWANNEE RIVER WATER MANAGEMENT DISTRICT INVITATION TO BID NO. 17/ AE POT SPRINGS RESTORATION PROJECT. Addendum #1 October 11, 2018

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1 SUWANNEE RIVER WATER MANAGEMENT DISTRICT INVITATION TO BID NO. 17/ AE POT SPRINGS RESTORATION PROJECT Addendum #1 October 11, 2018 Due to impacts of Hurricane Michael and the closure of District offices on October 10, the District is changing the Proposed Bid Schedule as shown: PROPOSED BID SCHEDULE September 25, 2018 Release of Invitation to Bid. October 4, 2018 Pre-Bid Site visit, 10:00 a.m. at the site. * October 8, 2018 End of Question period. October 15, 2018 Bids due prior to 1:30 p.m. at District Headquarters in Live Oak. Opening will occur at this time. * October 17, 2018 Selection of Contractor at 1:00 p.m. at District Headquarters in Live Oak. * November, 2018 Governing Board Approval of Top-Ranked Firm at 9:00 a.m. at District Headquarters in Live Oak. * * Denotes a public meeting. All times denote local time. All other terms and conditions, as stated in the original ITB, will remain as originally written and advertised. Please use attached documents in preparing your response. Addendum I - Page 1

2 Suwannee River Water Management Bid No. 17/ AE ADDENDUM #1 October 11, 2018 Pot Springs Restoration Project Response to Submitted Questions: North Florida Professional Services Engineer s Project Number L160209SRW Question 1. We do not see a line item for the 4 lime rock boulders. What pay item description does that need to be included under? A pay item for the 4 x4 boulders has been added. Question 2. On sheet 5 it calls for aluminum seats and railing with details to be found on sheet 12. How wide are the seats to be? The seats are to be a minimum 12 wide aluminum seat with no back. Question 3. It calls for larger rocks to be set in the flowable fill. What size rocks have you figured in the 97 tons of RIP Rap? See Sheet 9, Note 1 of the Riprap Notes in the Construction Plans. Question 4. There are 16 pay items noted on page 23 of the bid document; however, there are a number of items that do not have a specified line item or description assigned. These include the boulder border noted in the design drawings that surround the parking area as well as, providing a traffic barrier along the crest of slope (generally) near the northern edge of the sinkhole. Where do we bundle costs associated with these features since the line item designation do not specifically call them out? Please see Question 1 above. Question 5. We recognize that site conditions have changed significantly as it relates to topography and are reflective of storms and subsequent high flow conditions within the river. The unfortunate consequence is that it appears the edge of bank and slope adjacent to the spring-pool have eroded away. Therefore, it is extremely difficult to determine soil volume required to reconstruct the spring-pool embankment noted in the design drawings. The entire slope adjacent to the spring pool to the north and continuing to the northeast and eastward will need to be reconstructed to accommodate the placement of the stairway landing, mid-line footers and ultimately the RIP/RAP placement on the proposed revetment section. We can provide an estimate in the cut and fill line item; however, it is likely that the general value to complete this task will not be accurate until site conditions are confirmed. The design was based on a topographic survey showing contours as they existed in June 2017, attached. Conditions are not believed to have changed substantially. Question 6. Sheet 11 of the proposed stairway provides a generalized layout of the soil horizon with design elevations for the top of the proposed landing (i.e., detail 1/11). Based on site observations bedrock is exposed at land surface. The drawing clearly shows the RIP/RAP, Addendum I - Page 2

3 compacted select fill, geotextile and undisturbed native soil below the landing. Current site conditions clearly suggest a very thin veneer of soil overlays bedrock (i.e., limestone). How do we assume materials needed to rebuild and/or build up to allow for attaching the concrete landing (back-pinning) to the bed-rock and reinforcing the area around the landing to insure long-term structural integrity? Maintain elevation shown along the bulkhead (56.50 ) and the elevation at the foot of the steps/landing (44.50 ) and adjust the elevation at the intermediate concrete footing to match current site conditions. Question 7. It appears that the stairs (stairway) railing systems for the entire project are very specific as such, do we assume that all railing systems correspond exactly to what is noted in the design drawings. If so, these elements represent a significant dollar value when considering the entire proposed project budget. A minor issue noted in the drawing package Sheet 10 indicates the top rail of the stairway section is specified as 1 1/2" by 1 1/2' 1/ wall tubing, the detail noted on Sheet 9 for the ADA ramp (detail 1/9) indicate a top rail dimension of 2 1/2' by 2 1/2" 1/4" wall tubing are these elements supposed to match? All top rail dimensions are to be 2 ½ x 2 ½ x ¼ tubing. Question 8. Sheet 5 of the drawing set provides a callout for the concrete deck that indicates aluminum seats and railing and refers the reviewer to Sheet 12. There are no details for the proposed aluminum seats, top rail of hand rail sections as well as, the attachment points or attachment details. How are these features to be constructed? We understand that the ADA requires the top rail to be placed 42" above the finished floor height as well as the hand rail at 36". Would the rail system be attached to the bulkhead top at the centerline, or would the rail system be placed inside the bulkheads on the concrete deck? Please see Question 2 above. The railing is to be 16 above the top of the bulkhead mounted along the centerline of the bulkhead. Question 9. What are the design elevations for the mono-footers A and B? We will need to make a number of generalized assumptions regarding the bulkhead wall height be counting rebar elements noted in the design drawings since dimensions were not provided. Please see Attachment A to Addendum 1 for elevations. Question 10. Can the engineer provide a clarification regarding the connection between bulkheads B and C? We assume that concrete for Bulkheads A & B would be placed simultaneously therefore yielding a control joint facing the corresponding Bulkhead C? Continuing is there a control joint allowed between Bulkhead C and the concrete deck? Can the engineer also provide a general dimension for the face of Bulkhead C, we are exploring the use of a rental form package to reduce labor costs to construct 'forms' as such, we will need a relative dimension in order to have a quote generated. Dimensions specified on detail 3/ Sheet would be ideal. Please see Attachment A to Addendum 1 for depth of 26. Bulkheads to be poured continuously, no control joints allowed. A control joint is allowed between the slab and all bulkheads allowing for a floating slab. Addendum I - Page 3

4 Question 11. Is there a general spacing between the ~4' boulders? If they are generally scaled to fit can we count the locations to develop a total required for the project? The construction plans are to scale. Question 12. We have not been able to readily find a coir log 6-inches in diameter can we substitute an 8-inch for the bid estimate. The coir logs are required. The size of the coir logs maybe substituted if needed due to the availability. Addendum I - Page 4

5 File Location: X:\2016\L160209SRW\H.CADD\cSRWdsn01\ BULK-D Date Created: June 21, 2018 Date Last Saved: June 21, 2018 Date Plotted: June 21, 2018 EXISTING GROUND PROFILE 56.50' EXPANSION JOINT EXISTING GRADE 58.66' EXPANSION JOINT RIPRAP COMPACTED NATIVE SOILS UNDISTURBED NATIVE SOILS STRUCTURAL FILL 1 BULKHEAD DETAIL "A" 2 BULKHEAD DETAIL "B" 58.66' CONC. DECK CONC. DECK CONC. ADA RAMP 56.90' EXPANSION JOINT EXISTING GRADE 3 BULKHEAD DETAIL "C" 4 BULKHEAD DETAIL "D" 16" BULKHEAD "B" (BEYOND) 3,000 PSI CONC. BULKHEAD REINF. W/#5 O.C. EA. WAY CONSTRUCTION JOINT PERMITTED 3,000 PSI CONC. BULKHEAD FOOTER REINF. W/#5 O.C. EA. WAY TOP & BOTTOM (1) #5 BAR CONT. 24" 36" 24" 36" 16" 24" MIN. 24" 4" 3,000 PSI CONC. BULKHEAD REINF. W/#5 O.C. EA. WAY CONSTRUCTION JOINT PERMITTED 3,000 PSI CONC. BULKHEAD FOOTER REINF. W/#5 O.C. EA. WAY TOP & BOTTOM (1) #5 BAR CONT. 4" 4" 24" Final Construction P R O F E S S I O N A L E N G F L O R I D A I N E E R No STATE OF L I C E N S E ATTACHMENT A TO ADDENDUM #1 26" +/ ' +/ ' 26" Expansion Joint Addendum I - Page 5 DATE: 6/16/17 SHEET NO. DATE S JOB NUMBER: DESIGNED BY: DRAFTED BY: CHECKED BY: TH L160209SRW LH ENGINEER OF RECORD: ROBERT PHILLIP BISHOP JR. P.E. NO.: JOB NUMBER: RB REVISIONS: JOB# REVISIONS: BULKHEAD DETAILS POT SPRINGS RESTORATION HAMILTON COUNTY, FL NORT H FLORIDA PROFESSIONA L SERV ICES North Florida Professional Services, Inc. P.O. BOX 3823 P.O. BOX Lake City, FL Tallahassee, FL Ph Ph Fax Eng. Lic.29011

6 ADDENDUM 1 BID RESPONSE FORM FOR POT SPRINGS RESTORATION PROJECT SRWMD INVITATION TO BID NUMBER 17/ AE Pay Item No. Pay Item Description Quantity Units Unit Price Total Cost 1 Mobilization 1 LS Sediment Barrier - Floating Turbidity 2 Barrier 120 LF 3 Sediment Barrier - Type IV Silt Fence 455 LF 4 Demolition* 1 LS 5 Clearing & Grubbing 1 LS 6 Cut/Fill 1 LS 7 Fabricated Access Stairs per plans 1 LS 8 9 ADA Compliant Guardrail w/ Aluminum Stairs & Ramp 206 LF ADA Compliant Guardrail w/ Aluminum Bench 63 LF 10 Single Post Sign, F&I, Less Than 12 SF 1 AS 11 ADA Parking Pad w. Wheel Stop 415 SF 12 Concrete Walkway 264 SF ADA Compliant Ramp 460 SF 14 Bulkhead/Observation Deck (Includes conc. & reinforcement for stairs & deck) 34 CY 15 Riprap 97 TN 16 Flowable Fill 31 CY 17 4' x 4' Boulders 1 LS *All above-ground components of the wooden walkway shown on Sheet 3 of the plans have been removed. Support posts, filter fabric, geotech materials and some retaining walls are all that are included in demolition. TOTAL BASE BID TOTAL BID WRITTEN (Base Bid): $ Addendum I - Page 6

7 Addendum I - Page 7