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Item 1 - Response to RFI received subsequent to the issuance of ADDENDUM #4 : 1 . SHEET U -7 REVISED LIFT STATION : PLEASE PROVIDE A COPY OF THE SFWMD WATER WITHDRAWLI DEWATERING PERMIT. ALSO PROVIDE A COPY OF THE DEWATERING PLAN SHOWING WATER DISTRIBUTION , HOLDING , AND REMOVAL . The means and methods of any required dewatering are up to the CONTRACTOR. CONTRACTOR needs to be advised he is subject to SJRWMD dewatering criteria, not SFWMD. Also, caisson installation method should dramatically change dewatering requirements. 2 . GEOTECHNICAL: THE PILE INSTALLATION IS UNCLEAR WHETHER DRIVING IS REQUIRED . ALSO , IF DRIVING IS A REQUIREMENT , DOES iT HAVE ANY IMPACT ON TH TURTLE NESTING SEASON ? Piling for the boardwalk, ADA ramp, and stairs are not required to be driven; per the DRAWINGS 1 Coastal Tech: "Piles shall have a minimum embedment of 8 ' feet below existing grade or to elevation 0. 0 NGVD whichever is lower. " The AM Engineering geotechnical report indicates the piles are to be driven to final bearing. Pavilion piles may be jetted to within 2 feet of the minimum tip elevation and driven the last 2 feet 3 . ITEM # 14 — EXISTING IRRIGATION WELL AND IRRIGATION SYSTEM : PLEASE PROVIDE THE CHARACTERISTICS OF THE EXISTING WELL. PLEASE PROVIDE THE EXTENT OF WORK FOR IRRIGATION SYSTEM REPLACEMENT . Existing piping and wells have been cleared and exposed. A site visit with the plans in hand will greatly clarify the "assumptions ". Yes, we are aware the existing well data is not known, howeve , our assumption is that it is not irrigating the sod with salt water and is therefore less than 20 feet deep. 4 . A. PLEASE CLARIFY THE LENGTH OF 16 PILES @ 10" DIAMETER FOR THE PAVILION AREAS , B . PLEASE CLARIFY THE LENGTH OF ALL 6X6 WOOD PILES FOR BOARDWALKS . C . PLEASE CLARIFY THE LENGTH OF 6X6 WOOD PILES FOR THE COVERED BENCH AREA LOCATED AT BOTH SIDES OF 8' WIDE BOARDWALK. A. For the piles at the pavilion, i.e. 10 " Timber piles the minimum tip elevation should be +9. 0' NGVD. Section 2/S-4 shows the top of the pile at +28. OWGVD and the top of slab at + 1 & 0-'NGVD. addition to the minimum tip elevation of +9. 0 the minimum embedment should be 9 feet. So, if tht final grades are as indicated on the section the minimum final pile length is 19 '-D ". Driving parameters and cut off may require a longer pile, the pile Contractor should be consulted. B. 6X6 piles for the main boardwalk shall have a minimum length of 21 . 5 ' [(+ 18 'NGVD - O. ONGVD) +3.5 'J. Any splices shall occur at the pile cap - as approved by the ENGINEER. C. 6X6 piles for the covered bench area located a both sides of 8 ' wide boardwalk shall have a minimum length of 27' [(+ 18 'NGVD - O. ONGVD) +9 'J. Any splices shall occur at the pile cap - as approved by the ENGINEER The cost to furnish and install all piling as shown shall be included in the LUMP SUM BID ITEM 2. 01. 5 . IN SECTION 03000 , ARTICLE 2 . 11 ITEM B , YOUR ENGINEER HAS SPECIFIED THE PILES 11 BE TREATED WITH .40PCF MCQ WITH THE PILES BEING KILN DRIED AFTER TREATMENT , IT IS MY STRONG RECOMMENDATION THAT YOU SUGGEST THE USE OF . 80 CCA PILINGS . The following wood treatments will be acceptable alternatives for the construction of the boardwalk CADocuments and Settings\mmclaughlin\Local Settings\Temporary Intemet Res\OLMAddendum #5 (2) .doc Page 2 of 3