N4019220R1300_Amendment 0013_01SEP2020.pdf

AMENDMENT OF SOLICITATION/MODIFICATION OF CONTRACT

Except as provided herein, all terms and conditions of the document referenced in Item 9A or 10A, as heretofore changed, remains unchanged and in full force and effect.

15A. NAME AND TITLE OF SIGNER (Type or print)

30-105-04EXCEPTION TO SF 30

APPROVED BY OIRM 11-84

STANDARD FORM 30 (Rev. 10-83) Prescribed by GSA

FAR (48 CFR) 53.243

FY21 SPECIAL PROJECT RM 14-1420, Repair Lima Wharf, Naval Base Guam

See Continuation Page.

1. CONTRACT ID CODE PAGE OF PAGES

J 1 2

16A. NAME AND TITLE OF CONTRACTING OFFICER (Type or print)

16C. DATE SIGNED

BY 01-Sep-2020

16B. UNITED STATES OF AMERICA15C. DATE SIGNED15B. CONTRACTOR/OFFEROR

(Signature of Contracting Officer)(Signature of person authorized to sign)

8. NAME AND ADDRESS OF CONTRACTOR (No., Street, County, State and Zip Code) X N4019220R1300

X 9B. DATED (SEE ITEM 11)

16-Jun-2020

10B. DATED (SEE ITEM 13)

9A. AMENDMENT OF SOLICITATION NO.

11. THIS ITEM ONLY APPLIES TO AMENDMENTS OF SOLICITATIONS

X The above numbered solicitation is amended as set forth in Item 14. The hour and date specified for receipt of Offer is extended, X is not extended.

Offer must acknowledge receipt of this amendment prior to the hour and date specified in the solicitation or as amended by one of the following methods:

(a) By completing Items 8 and 15, and returning copies of the amendment; (b) By acknowledging receipt of this amendment on each copy of the offer submitted;

or (c) By separate letter or telegram which includes a reference to the solicitation and amendment numbers. FAILURE OF YOUR ACKNOWLEDGMENT TO BE RECEIVED AT THE PLACE DESIGNATED FOR THE RECEIPT OF OFFERS PRIOR TO THE HOUR AND DATE SPECIFIED MAY RESULT IN

REJECTION OF YOUR OFFER. If by virtue of this amendment you desire to change an offer already submitted, such change may be made by telegram or letter, provided each telegram or letter makes reference to the solicitation and this amendment, and is received prior to the opening hour and date specified.

12. ACCOUNTING AND APPROPRIATION DATA (If required)

13. THIS ITEM APPLIES ONLY TO MODIFICATIONS OF CONTRACTS/ORDERS.

IT MODIFIES THE CONTRACT/ORDER NO. AS DESCRIBED IN ITEM 14.

A. THIS CHANGE ORDER IS ISSUED PURSUANT TO: (Specify authority) THE CHANGES SET FORTH IN ITEM 14 ARE MADE IN THE

CONTRACT ORDER NO. IN ITEM 10A.

B. THE ABOVE NUMBERED CONTRACT/ORDER IS MODIFIED TO REFLECT THE ADMINISTRATIVE CHANGES (such as changes in paying office, appropriation date, etc.) SET FORTH IN ITEM 14, PURSUANT TO THE AUTHORITY OF FAR 43.103(B).

C. THIS SUPPLEMENTAL AGREEMENT IS ENTERED INTO PURSUANT TO AUTHORITY OF:

D. OTHER (Specify type of modification and authority)

E. IMPORTANT: Contractor is not, is required to sign this document and return copies to the issuing office.

14. DESCRIPTION OF AMENDMENT/MODIFICATION (Organized by UCF section headings, including solicitation/contract subject matter where feasible.)

10A. MOD. OF CONTRACT/ORDER NO.

2. AMENDMENT/MODIFICATION NO. 5. PROJECT NO.(If applicable)

6. ISSUED BY

3. EFFECTIVE DATE

01-Sep-2020

CODE

COMMANDING OFFICER - NAVFAC MARIANAS

MAR MCON

PSC 455, BOX 195

FPO AP 96540-2937

N40192 7. ADMINISTERED BY (If other than item 6)

4. REQUISITION/PURCHASE REQ. NO.

CODE

See Item 6

FACILITY CODECODE

EMAIL:TEL:

N4019220R1300

SECTION SF 30 BLOCK 14 CONTINUATION PAGE

SUMMARY OF CHANGES

SECTION SF 30 - BLOCK 14 CONTINUATION PAGE (SF 30)

The following have been added by full text:

AMENDMENT 0013

A. Notice 13 is provided in response to requests for information and is provided herein as Enclosure (1). Notice 13 is provided for INFORMATION ONLY. The solicitation remains unchanged unless it is amended in writing.

B. The date for receipt of proposals remains unchanged at September 9, 2020 at 4:30pm local time.

C. Offerors shall acknowledge this amendment in Block 19 of the Standard Form 1442 with their proposals.

(End of Summary of Changes)

DEPARTMENT OF THE NAVY

NAVAL FACILITIES ENGINEERING COMMAND MARIANAS

PSC 455, BOX 195

FPO AP 96540-2937

N4019220R1300 Notice 13

01 September 2020

NOTICE 13

REQUESTS FOR INFORMATION AND RESPONSES

SOLICITATION N4019220R1300 FY21 SPECIAL PROJECT RM 14-1420

REPAIR LIMA WHARF, NAVAL BASE GUAM

QUESTION (Q) 160: General Permit – Reference RFP Part B, Specification Section 01 57 19 Temporary Environmental Controls, Paragraph 3.2.1 Construction General Permit:

Please verify that the “General Permit” has been applied and paid for the NAVFAC and the Contractor is only responsible to provide a “Notice of Intent”.

Answer (A) 160: For the purposes of bidding, assume no.

Q169: Dredging, Surveying – Reference RFP Part B, Specification Section 35 20 23 Dredging, Paragraph 3.7.1 Survey Firm:

All surveys must be performed by a Survey Firm, independent of the Contractor. The firm must have a minimum of 3 years of qualifying experience in hydrographic surveying of navigable channels and a current California Land Surveyor's license. Provide a Hydrographic Survey report with Drawings.

Is a California PLS actually required? Will PLS from other states suffice or is a PLS registered in Guam required?

A169 (REVISED): The first paragraph of Section 35 20 23, Paragraph 3.7.1 is revised to read:

"All surveys must be performed by a Survey Firm, independent of the Contractor. The firm must have a minimum of 3 years of qualifying experience in hydrographic surveying of navigable channels and a current Land Surveyor's or a Professional Engineer's license, authorized to certify surveys in the Territory of Guam or State of Hawaii. Surveyor firm selected by the Contractor must be approved by the Contracting Officer prior to performing surveys for this contract. Provide a Hydrographic Survey report with Drawings."

Refer to RFP Amendment 0012.

Q171: BOWTS Pump Motors – Reference RFP Amendment 0003 (Amendment 22 JUL 2020), Specification Section 40 42 60.20 Bilge and Oily Waste Treatment System, Paragraph 2.8.1 Pump Motors:

Specification 40 42 60.20, Paragraph 2.8.1 states that pump motors are to be suitable for Class 1, Division 1 and fully submergible in water. Please confirm both are required. For the previous wharf projects, this requirement was removed during design as it was unnecessary and costly. Rather than installing pumps on 4" H.K. Pads, the pumps were installed on 30" elevated piers, so as to not need to be submerged in water, and could be Totally Enclosed Fan-Cooled. Our Positive Displacement Diaphragm Pump Manufacturer replied to our inquiry: "A submersible motor would not be recommended due to its method of cooling requiring it to be submerged and our pumps inability to operate without damage while being submerged. I would recommend a TEFC motor as we have provided in the past.” I got a similar response from our mixer and fresh water pump vendors (i.e. they can’t provide). Further, Sheet M-301, Section Elevation B3, shows the BOW Pumps mounted on a 30" elevated pier.

Why would you want to operate a plant submerged in water? I do not understand this.

A171: The BOW treatment system includes a containment wall surrounding the entire system that is designed to contain BOW in case of LET breach. Placement of motors within this basin may expose motors (and electrical components) to be submerged or partially submerged in case of LET breach and therefore must be rated as such. There is no intent to operate all equipment while flooded, however survival and continued operation of the equipment is required. The pump selection and design may consider elevating pumps above the containment basin height to relieve themselves of this requirement, provided that pumps and system are operational following a flood or LET breach, and all platforms meet required vertical and lateral load requirements.

Q172: DAF Bottom Sludge Auger – Reference RFP Part B, Specification Section 40 42 60.20 Bilge and Oily Waste Treatment System, Paragraph 1.6.6 Dissolved Air Flotation (DAF) System:

Specification 40 42 60.20, Paragraph 1.6.6 states that a bottom sludge auger shall be provided to convey sludge. This is not required for our DAF design and was removed during design for the past wharf projects. It is not shown on the flow diagram, bill of materials, one-line diagram or equipment schedule.

A172: Removal of the DAF bottom sludge auger is acceptable if the proposed equipment has been documented to be able to meet the project requirements without it.

Q173: LET Chain-and-Flight Sludge Collection + Oil Skimming – Reference RFP Part B, Specification Section 40 42 60.20 Bilge and Oily Waste Treatment System, Paragraph 1.6.2 Load Equalization Tank (LET) System:

Specification 40 42 60.20, Paragraph 1.6.2 states that an electric-motor driven chain-and-flight sludge collection and oil skimming mechanism is required. Per UFC 3-240-01, Equalization (Paragraph 16-8.1) is to be used to equalize surges in peak flows as well as variations in oil concentrations. This is critical in order for downstream processes (primary and secondary treatment) to work effectively.

Per Paragraph 16-8.2, Primary Treatment is required, and to be followed be secondary treatment (DAF) and finally tertiary treatment.. They provide two options to accomplish the primary treatment: Gravity Separation or Load Equalization Tank.

Paragraph 16-8.8 Emulsified Oil Treatment states that simple gravity settling is not effective for emulsified oils and avoidance of excessive turbulence.

Based upon Specification 40 42 60.20, the treatment processes as written include:

- No Equalization

- Primary Treatment: Load Equalization Tank operated in batch process

- Primary Treatment: Gravity Oil/Water Separator with coalescing elements for oil removal and sludge chamber for clarification of settleable solids

- Secondary Treatment: DAF

- Tertiary Treatment: Secondary Polishing Gravity Oil/Water Separator with coalescing elements oil removal and sludge chamber for clarification of settleable solids

In this scheme, there is no equalization and there are two primary treatments which is redundant and unnecessary to meet effluent requirements. The addition of an LET functioning as a clarifier (with chain and flight skimmers) will add unnecessary complexity to the required operation and maintenance of the facility and is likely to negatively affect the treatment efficiency. Due to the nature of the bilge oily waste, it is strongly recommended to change the Load Equalization Tanks to Equalization in order to equalize the incoming wastewater; this will prevent large variations in flow rates and oil loading which will affect the efficiency of the process. The skimmer and chain and flight equipment as the initial treatment step is not recommended nor should it be necessary to meet the effluent limits required as evidenced by other NAVFAC BOWTS treatment processes in operation at X-Ray Wharf and Sierra Wharf which follow the elimination of the LET and replacement with true equalization. ie, elimination of the LET and replacement with EQ – meaning eliminate the internals in the tanks (which make it an LET) and that will make them true equalization tanks. So keep the tankage, scrap the mechanical components.

A173: Bid according to contract documents. Deviations/Variance may be considered after Contract Award. Variances must be submitted in accordance with Section 01 33 00 SUBMITTAL PROCEDURES, Paragraph 1.8.

Q174: LET Sludge Pumps – Reference RFP Part B, Specification Section 40 42 60.20 Bilge and Oily Waste Treatment System, Paragraph 1.6.2 Load Equalization Tank (LET) System:

Specification 40 42 60.20, Paragraph 1.6.2 states that an electric-motor driven chain-and-flight sludge collection and oil skimming mechanism is required. There are no sludge pumps specified for the LET within the specification nor on the flow diagram, layout, bill of materials, one-line diagram or equipment schedule. M301 does show a sludge drain pipe and hopper to drain. How will the sludge be removed/treated?

A174: Collected sludge within the LET will be pumped to a sludge tank. Provide a pump and piping from the sludge collection piping to the sludge tank. An amendment will be issued to clarify this requirement.

Q175: Cathodic Protection – Reference Amendment 0010 (Question and Answer 144):

The answer provided for Question 144 regarding continuity welds on the sheet piles for the Cathodic Protection System states: “A144: Provide weld at each interlock (sheet pile/ sheet pile and sheet pile/king pile) to ensure electrical continuity. The weld is not required to be performed underwater.” The drawings (Sheet S-301) show the top of sheet pile elevation at -0.00 ft MLLW. The tidal range in Apra Harbor rarely falls below -0.00 ft MLLW which means the continuity welds will need to be performed underwater. In order to prepare pricing for this underwater continuity welding, please quantify the amount of vertical weld that will be required at each interlock.

A175: Provide a 6" weld along each interlock in accordance with Detail C4/CP301.

Q176: Sea Creatures – Reference RFI Notice 8, Question and Answer 119:

In reference to RFI answer 119 concerning delay by turtles or other sea creatures. Please verify that the Contractor will be compensated for downtimes longer than “short periods” as stated in the RFI. Please verify the duration of a short period. We will assume 1 hour or less for the bid but if the delay lasts for multiple days in a row or multiple times in a day then the Contractor should be compensated pursuant to the FAR.

A176: The definition of "short period" will vary based on the point in the schedule and the work being performed. The duration will be evaluated on a case by case basis during construction should delays due to sea turtles be encountered.

Q177: Test Piles – Reference RFP Part B, Specification Section 31 62 16.16 Steel H-Piles and Pipe Piles, Paragraphs 3.2.3 Pile Placement and Tolerances in Driving and 3.4.1 Test Piles:

Can the test pile be completed before the stone columns reference paragraph 3.2.3 states that piling work must be completed after ground improvement work? Section 3.4.1 and 3.2.3 include “Piles”, “Test Piles” and “Job Piles”. Are the “Piles” all project piles (Including test piles) or just the “Job Piles” or what is more normally known as “Production Piles.”

The Contractor needs to know this due to the long duration of stone columns work before we could order the piles due the restriction of ordering piles before the test pile program is completed and approved which verifies the RFP design.

A177: See response to Question 35. Stone column improvement must be completed before driving any pile within the ground improvement area. Piles include test piles and production piles.

Q178: Vibratory Hammer Use – Reference RFP Part B, Specification Section 31 62 16.16 Steel H-Piles and Pipe Piles, Paragraph 3.1.1 Pile Driving Hammers:

(a) Can a vibratory hammer be used for extraction of the existing batter piles that need to be extracted for the stone column work?

(b) Can temporary template piles installed to support the pile driving templates be installed and extracted using a vibratory hammer?

In both cases, extraction of piles by a vibratory hammer is the only feasible method.

A178: (a) Vibratory hammer may be allowed to extract piles provided the contractor take adequate precaution to avoid any damage to adjacent structures due to vibration.

(b) Temporary template piles shall be installed using impact hammer.

Q179: Epoxy Coated Reinforcing – Reference RFP Part C, Drawing No. S-002 (Structural Notes - 2):

Item 1 under “Reinforcing” specifics ASTM A934/A934M. Section 03 30 00 specifies A775/A775M, 03 30 53 A615/A615M, 03 31 29 A615/A615M; A767/A767M; A955/A955M or other approved coated reinforcing, and 03 31 30 A775/A775M. RFI 76 informed the bidders to bid per the RFP.

(a) Please confirm that bidding the use of ASTM A775/A775M reinforcing will be acceptable.

(b) Also, please confirm that all reinforcing used on the project will be epoxy coated.

A179: (a) Reinforcement must be epoxy coated in accordance with the specifications. Review the Concrete Diagram on S-002 for applicability of the various concrete specifications.

Cast-In-Place Concrete (Specification Section 03 30 00) specifies ASTM A775 coating on reinforcement.

Marine Concrete with Service Life Modeling (Specification Section 03 31 29) specifies ASTM A934/A934M coating on reinforcement.

Marine Concrete (Specification Section 03 31 30) specifies ASTM A775 coating on reinforcement.

(b) Miscellaneous Cast-In-Place Concrete (Specification Section 03 30 53) does not require coating on reinforcement.

Q180: Fiberglass Trench Covers – Reference RFP Part C, Drawings Nos. A-701 (Miscellaneous Details) and A-101 (Substation - Floor Plan), Detail B2:

Please provide specification for the fiberglass trench covers shown in the substation building.

A180: The fiberglass trench covers should be 1'-10" x 1'-8" X 1" thick solid panel fiberglass, refer to detail B2/A-701.

Q181: Water Quality and Biological Monitoring – Reference RFP Part B, Specification Section 01 57

19.02 Supplemental Temporary Environmental Controls, Paragraphs 3.2 Biological Monitoring and 3.3 Water Quality Monitoring (WQM) Plan:

Please verify that Water Quality and Biological Monitoring will NOT be required during the bulkhead concrete activities just during the below water demolition, dredging, sheet pile and king pile installations.

A181: See responses to Questions 154 and 155.

Q182: BOWTS Basis of Design – Reference RFP Part B, Specification Section 40 42 60.20 Bilge and Oily Waste Treatment System, Subsection 2.1 General Material and Equipment Requirements:

Which manufacturer or integrator is the basis of design for the bilge oily waste treatment system and master control panel?

A182: The basis of design for the bilge oily waste treatment system and master control panel is the UFC 4-832-01N Design: Industrial and Oily Wastewater Control. There is no specific manufacturer or integrator for the BOWTS design.

Q183: Engineered Fill – Reference RFP Part B, Specification Section 31 23 00.00 20 Excavation and Fill, Paragraph 2.1.7 Select Material and RFP Part C, Drawing No. S-605 (Ground Improvement Section - 1):

Note 1 on sheet S-605 requires the existing soil to be excavated and replaced with select granular fill with a 25% or less fines content. Paragraph 2.1.7 specifies the approved soil classifications with a 35% maximum fine content.

(a) Does the existing soil on site meet this requirement? Can it be reused or does all of the in-situ soil need to be hauled off?

(b) What is the maximum allowed fines content?

A183: (a) Geotechnical Data Report shall be reviewed and conservative assumptions regarding the suitability of existing soils shall be used in the bid.

(b) Maximum allowed fines content is 35% Drawings S-605 to S-609 will be amended to reflect this change.

Q184: Switchgear Enclosure – Reference RFP Part C Drawings Nos. E504 (Miscellaneous Details - 1), ES112 (Electrical Site Plan - 12), and ES113 (Electrical Site Plan - BOWTS):

Detail C5/E504 indicates walls and doors for switchgear per “MDAC” standards. Please provide overall size for different equipment, foundation/slab, wall and doors/gate requirements. Does this just occur at three locations on sheet ES112 & ES113?

A184: Additional details will be provided for the three electrical enclosures shown on ES 112 and ES113 in an upcoming amendment.

Q186: QP-1 Certification – Reference RFP Part B, Specification Section 09 90 00 Paints and Coatings, Paragraph 1.4.2 SSPC QP 1 Certification:

Paragraph 1.4.2 requires a QP-1 certification for the Painting/Coatings Contractor. There are no current listed QP-1 certified painters on the SSPC website for Guam. Please remove this requirement.

https://www.sspc.org/search-certifications/?target=company&certified=yes&pageSize=20&page Number=1&country_code=GU&country_text=Guam

A186: Requirement for QP-1 certification will be removed from the project requirements.