amd4.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

N62478-18-R-1515, FY18 MCON Project P-704 Sew er Lift Station and Relief Sew er Lines Joint Base Pearl Harbor-Hickam, Haw aii

1. CONTRACT ID CODE PAGE OF PAGES

J 1 2

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

16C. DATE SIGNED

BY 07-Nov-2018

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 N6247818R1515

X 9B. DATED (SEE ITEM 11)

21-Sep-2018

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

07-Nov-2018

CODE

NAVFAC HAWAII

CONSTRUCTION ACQUISITION DIV (OPHA2)

400 MARSHALL ROAD

JBPHH HI 96860-3139

N62478 7. ADMINISTERED BY (If other than item 6)

4. REQUISITION/PURCHASE REQ. NO.

CODE

See Item 6

FACILITY CODECODE

EMAIL:TEL:

N6247818R1515

SECTION SF 30 BLOCK 14 CONTINUATION PAGE

The following items are applicable to this modification:

REVISED SUMMARY OF CHANGES

Replace Document 00900 (Amendment No. 0003) with the attached Document 00900 (Amendment No. 0004).

The NAVFAC Drawing Number for C-107 is revised from 19074687 to 19074688.

Document 00900

Amendment No. 0004

DOCUMENT 00900

REQUESTS FOR INFORMATION & RESPONSES

FOR

RFP NO. NO. N62478-18-R-1515

FY18 MCON PROJECT P-704 SEWER LIFT STATION AND RELIEF SEWER LINES,

JOINT BASE PEARL HARBOR-HICKAM, HAWAII

Q1. Reference page 20 of 206, Clause 52.228-1 Bid Guarantee. Please provide missing bid guarantee values in paragraph C.

A1. See Amendment No. 0001.

Q2. Specification Section 07 27 10.00 10 paragraph 1.7.a. requires employment of an Air Barrier Inspector with training and certification as an Air Barrier Installer from ABAA. There are no ABAA certifier installers in the State of Hawaii. Please revise requirements to accommodate local market conditions.

A2. If no trainer can be found with an ABAA certification, “or other third party air barrier associate” is acceptable as indicated in Section 07 27 10.00 10 paragraph 1.7a.

Q3. Specification section 52.228-1, Bid Guarantee, does not specify the Bid Guarantee percentage or the dollar amount required. Bidder requests both the percentage and dollar value.

A3. See Amendment No. 0001.

Q4. Bidder request that NAVFAC provide the following as-built drawings:

a. Building 1385, Equipment and Equipment Pads and Wet Well Drawings

b. Buildings 1358, 1587, 1657, 1658, 1871 and all covered shelters.

c. Drawing C-102 – location A/1 fuel tank concrete containment.

A4. See Amendment No. 0002. NAVFAC Hawaii included all as-built drawings that it has.

Q5. The pump specifications in Section 22 13 29 is proprietary to one manufacturer. We would like to submit a request to substitute with another pump manufacturer that can meet the performance requirements.

A5. Please submit backup information for the proposed pump.

Q6. Section 03 30 00 paragraph 1.6.6.1 requires the quality manager to hold a current license as a professional engineer with experience on at least five (5) similar projects. Please clarify if the quality manager referenced in Section 03 30 00 is in addition to the QC Manager required by Section 01 45 00.00 20 paragraph 1.5.

A6. Quality Manager referenced in Section 03 30 00 is in addition to the QC Manager referenced in Section 01

45 00.00 20.

Q7. Section 03 30 00 paragraph 2.4.1.1 requires Type V cement. Type V cement is not available in the State of

Hawaii. Please revise requirements to accommodate local market conditions.

A7. Provide Type II cement with Class "F" fly ash under the Base Bid and Type V cement under Bid Option 4.

Q8. Please confirm that the deleterious requirement for aggregates can be categorized as “Negligible Weather” for this project based on the definitions of the aggregate categories per ASTM C33, table 3, note 1. ASTM C33 (Standard Specification For Concrete Aggregates), table 3, note 1 defines the category (N) Negligible Weathering Region – A climate where concrete is rarely exposed to freezing in the presence of moisture.

Hawaii is unique among the United States in that it has warm weather conditions year-round. Ambient air temperatures for this project average in the 70’s - 80’s Fahrenheit so there is no risk of exposure to freeze thawing cycles or the use of deicing chemicals. Fig. 1 from page 7 of ASTM C33 is a map showing the “Location of Weathering Regions”. Although Hawaii is not shown on the map, Hawaii has a milder climate than coastal southern California which is classified as “negligible weathering”.

A8. Deleterious requirement for aggregates can be categorized as “Negligible Weather”.

Q9. Please verify that ASTM C1293 in conjunction with low alkali cement is acceptable in lieu of C1260 for alkali silica resistivity.

A9. Conform to C1260 per specifications.

Q10. Section 05 12 00 paragraph 1.3 requires structural steel be fabricated in an AISC certified fabrication plant.

Given the small size and simplicity of the project, please delete the AISC plant certification requirement.

A10. Paragraph 1.3 “AISC Quality Certification” can be removed due to the minimal amount of steel used in this project.

Q11. Detail C1/A-404 is called out at Stair #1 on drawing A-101. Detail C1-A404 does not exist. Please provide correct detail call-out.

A11. Detail callout should be referencing sheet A-401 instead of sheet A-404.

Q12. Please verify the plan detail call-out of A1/A-401 at Stair #2 on drawing A-101 should be B1/A-401.

A12. It should be B1/A-401.

Q13. Please provide the Hazardous Material Survey by Myonghee Noh & Associates dated July 2015 for buildings 1358, 1358E, 1385, 1587 and the wet well.

A13. See Amendment No. 0002.

Q14. Please provide Soil and Groundwater Screening Report by Myonghee Noh & Associates dated July 2016.

A14. See Amendment No. 0002.

Q15. Volume 1 Drawing G-005 Sewer Note 8 requires the contractor to provide and maintain temporary power as necessary to maintain normal lift station operation. Please clarify the specific operations to be accommodated (loads, normal power, emergency power, etc.)

A15. See Drawing E-101. Design assumed providing a 2000 kW temporary generator.

Q16. Please provide as-built documents for all facilities to be demolished.

A16. See answer to Question 4.

Q17. Volume 1 Drawing C-003 describes a proposed By-Pass Plan. However, at the site visit an existing sewer by-pass appeared to be in place. Please clarify the Contractor’s responsibility regarding furnishing, installing, maintaining and removing the existing by-pass currently constructed onsite.

A17. Existing sewer bypass should be removed. Removal should be coordinated with the Contracting Officer.

Contractor will be responsible for furnishing, installing and maintaining own bypass system.

Q18. Volume 1 Drawing C-102 Note 2 states to relocate existing containers not shown. Please provide quantity of containers not shown for bidding purposes.

A18. Government will move containers before start of construction.

Q19. Specification Section 03 45 33 Precast Structural Concrete is included in the project specifications. All concrete on the structural drawings appears to be cast-in-place concrete. Please clarify the location of precast on the project.

A19. Refer to civil drawings for details and location of precast concrete manhole structures.

Q20. Please clarify the intent of note 1 on Volume 1 Drawings P-302 & P-303 to “apply protective coating to all concrete and ferrous metal surfaces”. All Structural Steel is to be hot-dipped galvanized per plan notes and applicable specifications. Is the hot-dipped galvanized coating the “protective coating” referred to in the aforementioned note?

A20. No, note does not refer to the hot-dipped galvanized coating. Note refers to the epoxy coating that should be applied to the concrete and metal surfaces in the wetwell.

Q21. Please provide height of baffle wall shown in detail A1/S501.

A21. Height of the baffle wall varies from 4’-1” to 5’-4”.

Q22. Please verify that the foundation for the pump station can be monolithic and not separated to 1,200 SF maximum placements per section 03 30 00 page 27 paragraph 3.11.1.1.b.

A22. Pump station foundation may be poured monolithically.

Q23. Are there any additional requirements for “Mass Concrete” as defined in section 03 30 00 page 5 paragraph

1.2.f?

A23. Yes, for mix design.

Q24. Section 03 00 00-page 7 paragraph 1.5 does not indicate ACI 211.1 for Mass Concrete yet the mix design paragraph 2.3.1 indicates this ACI specification. Is this required?

A24. Yes, ACI 211.1 is required for mix design.

Q25. Are we to follow ACI 301 or ACI 211.1 for Mass Concrete curing? Reference section 03 30 00-page 28 paragraph 3.13.

A25. Follow ACI 301 for curing.

Q26. Concrete testing specification 03 30 00 page 30 paragraph 3.14.2 does not indicate any special testing for

Mass Concrete, is this required?

A26. Provide testing as indicated in paragraph 3.14.2. No other testing is required.

Q27. Due to the complexity of this project a two (2) week postponement of the bid date is requested.

A27. See Amendment No. 0002.

Q28. According to the signage schedule on drawing A-603, Detail B1 & C1 state the signs are to be melamine plastic. However, the spec section 10 14 00.20 states the standard interior rooms signs are to be aluminum with melamine plastic engraving. Please confirm to follow the signage schedule drawing A-603 or the specs section 10 14 00.20.

A28. The safety hazard signs should be aluminum. The room signs should be melamine. C1 and B1 are melamine with raised lettering. Signs C2 and B2 should be aluminum.

Q29. According to the signage schedule on drawing A-603, Detail C1 states the signs are to have corners rounded to ½”. However, the spec section 10 14 00.20 states the standard interior rooms signs are to be rounded to 3/8”. Please confirm to follow the signage schedule drawing A-603 or the specs section 10 14 00.20.

A29. Corners can be rounded to ½” per drawing.

Q30. According to the signage schedule on drawing A-603, Detail B1 & C1 state the signs are to have 3/32” raised lettering. However, the spec section 10 14 00.20 states the standard interior rooms signs are to have 1/32” raised lettering. Please confirm to follow the signage schedule drawing A-603 or the specs section 10 14 00.20.

A30. Follow 3/32” on drawings.

Q31. Please confirm the only fire extinguisher needed to be provided is the one shown on the storage shed floor plan on Drawing F-102. If not, please verify exact locations indicated on the drawings.

A31. Portable fire extinguishers are not required for the Pump Station Building. One fire extinguisher is required for the storage shed as shown on F-102.

Q32. We are requesting to substitute materials specified in Section 22 13 29 – Sanitary Sewerage Pumps on this project. The specifications is written around one manufacturer with proprietary features. Consequently, only one manufacturer can meet the specifications and bid this project at this time.

A32. The proposed substitute pump is not acceptable. The electrical system is sized to support maximum 400

HP pumps. Proposed substitute pump is 483 HP. Impeller should be semi-open. Impeller for proposed substitute pump is centrifugal. Service cart material should be Type 316 stainless steel. Service cart material for proposed substitute pump is coated structural steel.

Q33. Volume 1, sheet A-212, Graphic Scale shows to use a 3/8” = 1’-0” scale for detail C4 Restroom. The mentioned detail C4 is drawn using a 3/16” = 1’-0” scale. Please confirm detail C4 is to use the 3/16” = 1’- 0” scale.

A33. Detail C4 is drawn at 3/8” = 1’-0” and graphic scale is correctly shown.

Q34. Please clarify the intent of specifying Type V cement for this project. ACI 318 “Building Code” indicates in Tables 4.2.1 & 4.3.1, that for moderate sulfate exposure “class S1” (seawater, Water soluble sulfate (SO4) in soil, percent by weight {0.10 < SO4 < 0.20} or Sulfate (SO4) in water {150 ppm < SO4 < 1500 ppm}) Type II cement is required. Unless the owners are expecting sulfate concentrations greater than “moderate” as defined by ACI 318, there is no need for Type V cement. If higher sulfate is expected, Hawaiian Cement can offer Type II cement with Class “F” fly ash to improve the sulfate resistance. Section R4.3 (Requirements for concrete mixtures) of ACI 318 states “The use of fly ash (ASTM C618, Class F), natural pozzolans (ASTM C618, Class N), silica fume (ASTM C1240), or ground-granulated blast-furnace slag (ASTM C989) also has been shown to improve the sulfate resistance of concrete.” The footnote on Table 4.3.1 states “‡For seawater exposure, other types of portland cements with tricalcium aluminate (C3A) contents up to 10 percent are permitted if the w /cm does not exceed 0.40.” Again, there is no requirement for type V. Remember that type V cement is for sulfate resistance only and does not improve resistance to chemical attack (acids) or corrosion (hydrogen sulfide in sewage treatment). If this is the intended purpose for the Type V cement, again, the addition of class “f’ fly ash can greatly improve chemical and corrosion resistance by decreasing the permeability of the concrete.

A.34. See answer to Question 7.

Q35. Bypass, C-003. Government provide bypass pumping gallons per hour at existing wetwell, SMH C5 to C3 and SMH D12 to New SMH109.

A35. Refer to C-003 Note 1 for portable pump minimum capacity. Estimated average day flow and peak flow at

SMH C5 are 2.5 mgd and 5.8 mgd, respectively. Estimated average day flow and peak flow at SMH D12 are 2.3 mgd and 5.3 mgd, respectively.

Q36. Tech Specs, 01 57 19, 1.4.2 (Page 9). Government provide copy of the installation's Environmental

Management System.

A36. See Amendment No. 0002.

Q37. Environ, Public Record. Government provide the Environmental Record of Decision for the Shipyard area of Pearl Harbor, related to CERCLA (Superfund) Liability

A37. There is no Record of Decision for the CERCLA sites identified for this project.

Q38. As-builts, C-102. Government provide as-builts for fuel lines to be abandoned and removed, particularly regarding pipeline coatings, fuel in lines and cleaning performed or to be performed by the Government.

A38. See Amendment No. 0002 for available record drawings. Fuel lines were assumed to be emptied and cleaned prior to abandonment. However, Contractor should take necessary precautions for potential residual in the fuel lines.

Q39. Structural, 03 30 00, Paragraph 2.4.1.1. Hawaiian Cement RFI on Type 5 Cement, attached

A39. See answer to Question 7.

Q40. Basis of Design, Page 44. Government provide DON "Excavation and Dewatering in the Pearl Harbor

Naval Complex (14 Dec 94) document.

A40. See Amendment No. 0002.

Q41. Basis of Design, Page 46. Government provide Navy Guidance "Technical Memorandum for Evaluating

Sites in Hawaii with Soil Potentially Impacted by Pesticides Applied to Control Termites and Other Pests and an Approach for Developing a Remedial Response (March 2013) document.

A41. See Amendment No. 0002.

Q42. Basis of Design, Page 47. Government provide Department of Navy issued letter for excavation and dewatering with guidelines for handling petroleum contaminated soil and groundwater in the Pearl Harbor Naval Complex document.

A42. See Amendment No. 0002.

Q43. Environ, 02 61 23. REMOVAL AND DISPOSAL OF PCB CONTAMINATED SOILS Paragraph 2.2

Field Screening Test - Is there a specific field test recommended to screen for PCCBs that meets the listed requirements (capable of detecting PCBs down to at least 1 ppm, with less that 5 percent false negatives, and providing on site results within 2 hours of taking sample)?

A43. Yes, the RaPID Assay field test should be capable of achieving the required detection limit within the time frame required.

Q44. Environ, 02 61 23. Paragraph 3.3.4 Excavation Limits - The contaminated area map (G-008) and contaminated area plot plan 1 (G-009) identify the horizontal limits of PCB-contaminated soil. What are the vertical limits of PCB-contaminated soil? According to the contaminated area plot 1 (G-009), PCB-contaminated soil extends beyond the boundary of the pump station project site; is Paragraph 3.3.4 requiring excavation for the entire PCB-contaminated area shown on G-009, or only contaminated soil within the project site boundary, or only material within the project site that requires disturbance to construct the project?

A44. Refer to figures showing sampling results at selected depths. Paragraph 3.3.4 is referring to the excavated material within the project site that requires disturbance to construct the project.

Q45. Environ, 02 61 23. Paragraph 3.5.2 Disposal - PCB-contaminated soil (greater that 50 mg/kg) that must be disposed of at a TSCA regulated landfill cannot be disposed on-island and must me shipped to a mainland facility. Since PCBs were detected up to 170 mg/kg, the quantity of PCB-contaminated soil to be shipped to the mainland cannot be determined. For pricing purposes, does the government have an estimated quantity of PCB-contaminated soil that will require shipping to a TSCA regulated landfill?

A45. The estimated quantity of PCB-contaminated soil that will require shipping to a TSCA regulated landfill is

550 cubic yards for the Base Bid and 600 cubic yards for Bid Option 3.

Q46. Abandonment, Volume II, C-101 to C-111. Contractor request government furnish as-builts for existing

Gravity Sewer Mains shown on the referenced drawings.

A46. NAVFAC Hawaii personnel was not able to find as-built drawings of the gravity sewer lines. NAVFAC

Hawaii has Sewer System maps which indicate manhole ID's, distance between manholes, top of manhole elevation, manhole invert elevation, and pipe size.

Q47. Why is Type V cement specified for this project and for this particular applications?

ACI 318 “Building Code” indicates in Tables 4.2.1 & 4.3.1, that for moderate sulfate exposure “class S1” (seawater, Water soluble sulfate (SO4) in soil, percent by weight {0.10 < SO4 < 0.20} or Sulfate (SO4) in water {150 ppm < SO4 < 1500 ppm}) Type II cement is required. Unless the owners are expecting sulfate concentrations greater than “moderate” as defined by ACI 318, there is no need for Type V cement. Please refer to the attached copy of ACI 318 Tables 4.2.1 & 4.3.1. If higher sulfate is expected, Hawaiian Cement can offer Type II cement with Class “F” fly ash to improve the sulfate resistance. Section R4.3 (Requirements for concrete mixtures) of ACI 318 states “The use of fly ash (ASTM C618, Class F), natural pozzolans (ASTM C618, Class N), silica fume (ASTM C1240), or ground-granulated blast-furnace slag (ASTM C989) also has been shown to improve the sulfate resistance of concrete.” The footnote on Table

4.3.1 states “‡For seawater exposure, other types of portland cements with tricalcium aluminate (C3A) contents up to 10 percent are permitted if the w /cm does not exceed 0.40.” Again, there is no requirement for type V. Remember that type V cement is for sulfate resistance only and does not improve resistance to chemical attack (acids) or corrosion (hydrogen sulfide in sewage treatment). If this is the intended purpose for the Type V cement, again, the addition of class “f’ fly ash can greatly improve chemical and corrosion resistance by decreasing the permeability of the concrete.

Remember that type V cement is for sulfate resistance only and does not improve resistance to chemical attack (acids) or corrosion (hydrogen sulfide in sewage treatment). If this is the intended purpose for the Type V cement, again, the addition of class “f’ fly ash can greatly improve chemical and corrosion resistance by decreasing the permeability of the concrete.

A47. See answer to Question 7.

Q48. Does the design team want class “F” fly ash added to the concrete to improve resistance to chemical attack (including sulfate) and corrosion?

A48. See answer to Question 7.

Q49. During the site visit, we observed that there are two temp bypass pumps are in the process to be installed in order to isolate / take out existing pump station out of service. Will the government take care of the bypass system including all associated costs related to bypass for the entire duration of the project?

A49. No, the Government will not take care of the bypass system. The Contractor will be responsible for providing the bypass system.

Q50. For existing aboveground fuel tank: Please provide anticipated residual quantities of fuel and sediment

(please see attached picture).

A50. Aboveground fuel tank will be full. The Contractor will need to empty the tank and provide new tank with full tank of fuel.

Q51. For anticipated PCB contaminated soil and water: Please provide estimated soil tonnage and water gallonage expected or excavation schedule information to help estimate.

A51. Estimated volume of in-place PCB-contaminated soil is 1,800 cubic yards for the Base Bid and 1,900 cubic yards for Bid Option 3. For bidding purposes, the anticipated amount of PCB-contaminated water is zero.

Q52. For existing above ground acid tank: Please provide anticipated residual quantities of liquids/sediment

(please see attached picture).

A52. Equipment and tanks in the former IWTP area were cleaned and emptied when the treatment plant was abandoned. Anticipated residual in the existing aboveground acid tank is expected to be minimal, if any.

Q53. For all pipelines cleaning in preparation for demolition/removal/replacement/re-use: Please provide anticipated pipeline size and lengths, anticipated residual liquids and sludge needing disposal.

A53. Anticipated pipeline sizes and lengths are shown on the drawings. The abandoned lines were assumed to be emptied and cleaned. However, the Contractor should take necessary precautions for potential residuals in the abandoned lines.

Q54. Specification 03 30 00: Cast-In-Place Concrete

a. Paragraph 2.4.1.1. Type V concrete is not available in Hawaii. Please clarify. See Volume I, Drawings S-001 and S-101 through S-103.

b. Paragraph 3.6.2. There is a delivery requirement of 90 minutes for the concrete, can that be waived?

A54. a. Provide Type II cement with Class "F" fly ash under the Base Bid and Type V cement under Bid

Option 4.

b. No, follow delivery requirement according to specifications.

Q55. Archaeological monitoring required? Report available to bidders? Please provide force account allowance for archaeological monitoring?

A55. Archaeological monitoring is not required. The Navy does not use force accounts.

Q56. Please provide force account allowance for monitoring of active nests during the Hawaiian Hoary bat pupping season, migratory birds and spread of coconut rhinoceros beetles?

A56. The Navy does not use force accounts.

Q57. Specifications stated to provide top and bottom rails. Volume I, Drawing C-522 stated "No. 7 coiled spring reinforcing wire or top rail and the bottom just states No. 7 coiled spring reinforcing wire.” Please confirm what is the intent for the top and bottom of this fence system. Top rails or tension wire top and bottom rail or tension wire bottom?

A57. Provide top rails and bottom tension wire.

Q58. Volume I, Drawing G-005, Environmental Notes. Hazardous Materials Survey Report stated to refer to the report completed by Myonghee Noh & Associates in July 2015. Please provide HAZMAT and Soil/Screening Reports for the Repair SY-001 Wet well project.

A58. See Amendment No. 0002.

Q59. Referencing Volume II, please provide the size of the abandoned fuel line that needs to be removed as required.

A59. The location of the fuel line near the alignment of the new 42" sewer along South Avenue is not shown correctly on the topographic survey. The fuel line is not located within the roadway. This is addressed in Amendment No. 0003.

Q60. Please provide photographs of interior and exterior of existing Buildings, fuel tank pad and electrical substation to be demolished.

A60. See Amendment No. 0002.

Q61. Volume I, Drawing G-005, Building Demolition Notes #1 and #6 refers to all existing buildings. Note #6 states to demolish structure minimum 2 feet below existing grade. Please provide foundation as-builts of the existing Buildings 1385, 1587, 1657 and 1658.

A61. See answer to Question 4.

Q62. Volume I, Drawing G-005, Building Demolition Notes #7 through #10 regarding specifically for existing buildings 1358 and 1587. Volume I, Drawing C-104 stated “Demolish Exist Wet Well Structure Below, See Note 4” and Note 4 stated “Existing pump station wet well structure is in poor condition. Contractor shall exercise caution when working in the vicinity of the wet well structure.” Hazardous Materials Survey Report stated “Building 1358 shall be demolished after the new sewer lift station is in service.” Please clarify extent of demolition? Intermediate room, pump room and wet well to be demolished too? Please provide as-builts of the existing Pump Station at Building 1358.

A62. Extent of demolition is as indicated in Building Demolition Notes on G-005. Portions of the intermediate room, pump room and wetwell will need to be demolished. See Amendment No. 0002 for record drawings.

Q&A63. Volume I, Site Demolition, Drawings C-102 through C-106.

a. General

(1) Please provide height of existing chain link fence and gates to be removed. Similar to Drawing C-522 with barbed wire?

The height of the existing chain link fence and gates is 7 feet. Existing chain link fence and gate height at entrance to existing pump station is 8 feet.

(2) Please provide quantity and weight of existing containers that will be relocated within the

C&P Lot. Max pick weight? Exist containers not identified in the plans to be relocated to? Travel distance from job site?

Containers will be relocated by Government prior to the start of construction.

(3) Please provide existing site concrete pavement thickness.

Record drawings indicating the site concrete pavement thickness were not available.

Based on boring logs from another project, the concrete pavement thickness around the existing SY-001 pump station is 6 inches.

(4) Please provide minimum depths of existing underground piping/ducts to be removed/abandoned: Drain, Water, Sewer, Electrical and Fuel.

Minimum depths were estimated as follows:

Drain: Approximately 6 feet Water: 3 feet Sewer: Varies – Please refer to Existing Conditions Plan on Sheet C-101 and profiles on Sheets C-201 and C-202.

Electrical: 18” to 24” Fuel: 4 feet

b. Drawing C-102

(1) Please provide height of existing concrete retaining wall to be removed. Please provide detail or section of any retaining wall footing foundation. Another location shown in Drawing C-106.

Record drawings for the existing concrete retaining wall were not available. Based on the topographic survey, top of wall to bottom of wall ranges from about 2’-2” to 2’-5”.

(2) Note 3. Please provide details of existing elevated building to be relocated. Max pick weight?

Existing elevated building has been relocated by Government.

(3) Refer Drawing M-101.

(a) Please provide weight of existing 4,000-gallon fuel tank to be removed. Fuel tank empty at time of disposal?

Weight of existing 4,000-gallon fuel tank is estimated to be 4,000 lbs. No, fuel tank will be full.

(b) Please provide section detail of existing containment to be demolished at existing fuel tank.

Existing containment wall consists of 8” thick by 24” high containment wall on top of a 6” thick concrete slab on grade with thickened edge footings. Please refer to the record drawings for Emergency Generator Building included in Amendment No. 0002.

(c) Existing Covered Shelter to be demolished. Existing columns and column footings to remain?

Existing columns and column footings for existing covered shelter will be removed.

c. Drawing C-103.

(1) Please provide height of existing concrete wall to be removed. Please provide detail or section of any wall footing foundation.

Record drawings showing concrete wall with chain link fence were not available.

Concrete wall is assumed to be approximately 18 inches high and 8 inches wide.

(2) Please provide detail/dimensions of the existing concrete pipe supports to be removed for

4” and 8” aboveground pipes. Similar to Detail A1 of Drawing C-512?

Concrete supports are 10” diameter cylindrical supports with height of approximately 16 inches.

(3) Note states to remove 250 linear feet of existing chain link fence. Is this accounted in the

290 linear feet quantity that was stated on Drawings C-102 and C-106?

The 290 LF quantity of chain link fence stated on drawings C-102 and C-106 does not include the 250 LF of chain link fence on Drawing C-103.

(4) Please clarify linear footage of existing water line with hose bib to be removed.

The length of the existing hose bibb and water line to be removed is approximately 56

LF.

(5) Please clarify duct section of existing electrical conduit to be removed. Another location is shown in Drawing C-106.

Refer to Sheet E-101 for Existing Electrical Site Plan.

d. Drawing C-104.

(1) Please clarify if the existing biofilter systems to be removed will be empty – no biofilter content at time of disposal.

Assume removal and disposal of existing biofilter system, including media material.

(2) Please provide linear footage of aboveground pipes to be removed.

Approximately 62 LF of biofilter piping.

Approximately 33 LF of 6” bilge water piping.

Approximately 65 LF of exposed sewer piping.

(3) Please provide height of existing CMU wall to be removed. Please provide detail or section of any wall footing foundation. Also shown in Drawing C-105.

CMU wall height is estimated to be 3 feet. Existing footing detail is not available.

(4) Please provide size dimensions of existing electrical box to be removed. Similar to

Electrical Manhole per Drawing E503 or Electrical Handhole per Drawing E504?

Existing electrical box dimensions are estimated to be 6’-3” x 4’-6” x 36” deep.

Q64. Volume I, Drawing C-524. Please clarify on center distance of wooden stakes for silt fence.

A64. Maximum center to center distance for wooden stakes for silt fence is 6 feet.

Q65. Please identify possible stock pile and storage area locations. If possible, provide distances from project site.

A65. Stockpile and storage areas will be within the Contractor Laydown/Soil Laydown Area shown on Sheet

G-007 or within project site boundaries.

Q66. Referencing Force Main “A”; Inverts called out on sheet C-203 do not match the inverts on C112. Please clarify.

A66. Please use inverts shown on Sheet C-203.

Q67. Volume I, Drawing E-101 and E-601. Please provide manufacturer product data for temporary generator with integral 1,250-gallon diesel fuel tank and temporary 5,000-gallon diesel fuel tank.

A67. Design is based on Caterpillar XQ2000 temporary rental generator.

Q68. In the specifications the amount of the bid guarantee is left blank. Federal bonds USUALLY read “20% of the Bid Price or $3,000,000, whichever is less.”. Shall I just go with that or shall we send a question to clarify?

A68. See Amendment No. 0001.

Q69. Please confirm if all four main dry pit pumps will need to comply to the Buy America Act.

A69. Yes, pumps will need to comply with the Buy America Act.

Q70. Please confirm maximum volume of 100 cubic yards per stock pile.

A70. Maximum volume revised to 400 cubic yards per stockpile.

Q71. November 5th bid date is on a Monday. Please extend bid date to accommodate subcontractors and material vendors that don’t work on the weekends. State projects usually bid on Thursdays to allow ample time for them to submit to the general contractors.

A71. See Amendment No. 0002.

Q72. Due to the complexity of the project and the holidays, please extend the bid date.

A72. See Amendment No. 0002.

Q73. 3.11.1 Construction Joints. The Lift Station Bottom Level is situated on a waterproofing mud slab and is a minimum of 4’-10” thick. Please confirm that a Construction Joint is not required at this level.

A73. Confirmed. Construction Joint is not required at this level.

Q74. At the official site visit, attendees viewed significant amount of abandoned equipment and other materials not shown on the demolition plan sheets, C-102 through C-106. Will NAVFAC remove the abandoned equipment and material or will it become the property of the Contractor?

A74. All equipment in the abandoned industrial waste treatment facility will be the Contractor's responsibility.

All equipment in the pump station and emergency generator areas will be removed by others. All equipment in the C & P lot will be removed by others.

Q75. After review of the contract documents, it is apparent that the installation of the new 42” sewer line from existing manhole D12-A which will run west down South Avenue (approximately 3,300 linear feet) will be challenging via open cut methods because of the high ground water, permeable soils, hard rock/soils, and proximity to existing structures. Would the Department of the Navy consider microtunneling an acceptable method of installing the 42” South Avenue sewer line? Providing the option to install the South Avenue sewer line via microtunneling would likely result in a reduced installation cost.

A75. The Contractor's bid shall be based on the contract drawings and specifications.

Q76. Contractor requests postponement and extension of the question and answer period for a period to include:

1. Government furnishes as-builts for Buildings 1358, 1385, 1587, 1657, 1658, 1871, and generator fuel tank containment.

2. Question and Answer period of two (2) weeks after government furnishes as-built drawings.

3. Two (2) week bid period after response to questions and answers. This proposed extension will allow for proper engineering analysis of the existing wet well and building demolition conditions that are unknown to the Contractor at this time.

A76. 1. See answer to Question 4.

2. No additional extension besides the original 2 week extension will be granted.

3. See Amendment No. 0002.

Q77. Paragraph 3.3.6.1 (per Amd1) – Indicates analyzing a minimum of one multi-increment sample for every

400 cubic yards of soil to be disposed, yet also references testing samples in accordance with Section 01 74

19. For PCBs, Section 01 74 19 indicates 1 sample per 20 cubic yards of surplus soil. Please clarify the discrepancy.

A77. Refer to amended Section 01 74 19 issued under Amendment No. 0001.

Q78. Specification Section 101400 (Part 2 -2.2.1) – Interior Signage calls for extruded aluminum signs.

However, signage details on Plan Sheet A-603 indicate melamine plastic signs and standard aluminum signs. Which is correct?

A78. The safety hazard signs should be aluminum. The room signs should be melamine. C1 and B1 are melamine with raised lettering. Signs C2 and B2 should be aluminum.

Q79. Specification Section 104416 – Fire extinguishers call for 10-lbs fire extinguisher only. However, life safety plan on Plan Sheet F-102 indicates to provide a fire extinguisher in cabinet in Storage Shed. Which is correct.

A79. Provide fire extinguisher with cabinet for the storage shed.

Q80. Specification Section 104416 – Fire extinguishers. We don’t see any fire extinguishers other than in the

Storage Shed. Are fire extinguishers required in other locations? Please advise.

A80. Portable fire extinguishers are not required for the Pump Station Building. One fire extinguisher is required for the storage shed as shown on F-102.

Q81. Are there any as-builts available of the existing structures? If so, please advise us of how we might get copies.

A81. See answer to Question 4.

Q82. During the site visit it was observed that there were numerous pipe fittings, pipe sections, valves, pumps and other misc. materials throughout the site including inside of buildings. Will it be the contractor’s responsibility to remove and dispose of these items?

A82. All equipment in the abandoned industrial waste treatment facility will be the Contractor's responsibility.

All equipment in the pump station and emergency generator areas will be removed by others. All equipment in the C & P lot will be removed by others.

Q83. Drawings C-102 through C-105 indicate several buried pipelines which are shown as diagonally hatched and to be removed however the notes with arrows pointing to specific pipes to be removed do not show all pipes being removed. Please confirm that all pipes which are shown as diagonally hatched are to be removed even if the notes on the drawings only show the ends being cut and plugged.

A83. All pipes shown with diagonal hatching should be removed.

Q84. Specification section 33 30 00, Sanitary Sewers, Gravity, contains the requirement that the manholes be lined with epoxy coating. Please confirm that this is the intent.

A84. Yes, manholes should be lined with epoxy coating.

Q85. Drawing G-005, Environmental Notes, Note 2 references a soil and groundwater screening survey report that was produced. Please advise us how we might get copies.

A85. See Amendment No. 0002.

Q86. Section 31 23 00.00 20 1.8.2 Dewatering Work Plan notes “the use of vibratory equipment or vibratory hammers to install or extract sheet piles, predrilling, excavating, and shoring is prohibited.” Additionally, 3.1.3.e indicates the use of vibratory equipment is not allowed. This is inconsistent with standard practices of installing and extracting sheet piles which are identified as a sheeting/ shoring option in Subsection

3.1.3. Please eliminate the restrictions on use of vibratory equipment as it limits the contractor’s means and methods of performing this work.

A86. Due to the presence of loose and submerged granular fill at the site, the use of vibratory equipment for sheeting and shoring installation or extraction is not recommended.

Q87. Section 31 23 00.00 20 1.8.2 Dewatering Work Plan notes “the use of vibratory equipment or vibratory hammers to install or extract sheet piles, predrilling, excavating, and shoring is prohibited.” In order to construct shoring system to safely construct the pump station, predrilling or drilling will be required in order to achieve adequate depths for shoring stability and groundwater cut-off. Please eliminate the restrictions on predrilling or drilling.

A87. See Amendment No. 0003 for edits to Section 31 23 00.00 20.

Q88. Will the contractor be allowed to utilize the new 7.5 Ton Bridge Crane and Monorail Hoist in the installation of the new pumps, piping and equipment?

A88. Yes.

Q89. Can an odor control manufacturer provide a biotrickling filter system with an EBRT lower than 15 seconds if they provide data from 3 or more systems in operation to qualify their design to meet the specified performance guarantees listed in the specification?

A89. An EBRT of less than 15 seconds is acceptable if the manufacturer meets all other performance requirements included in the specifications.

Q90. Specification section 33 30 00, paragraph 3.1.3.5.1, Jointing, which starts on page 18 of the section, at the top of page 19 the first complete sentence reads, “Provide dewatering system to draw down groundwater level below bottom of the pipe trench.” Paragraph 3.1.3.5 which preceeds this sub-paragraph states in part, “Installation of the pipe and fittings shall be in accordance with the drawings and specifications, and pipe manufacturers recommendations.”

We have had discussions with the pipe manufacturer and they have advised us that it is totally permissible to install and make up the pipe joints in the wet or underwater.

Please revise the specification to eliminate the requirement that a dewatering system be provided to draw groundwater level below the bottom of the pipe trench. There will be 7’ + of groundwater above the trench bottom at SMH C4 which will also likely be contaminated. The geotechnical conditions at the site would indicate that groundwater flows through the subgrade are highly likely. Attempting to remove this much water, which will likely percolate easily back into the trench once a dewatering effort is started, will be very costly and developing a system to maintain the trench in the dry may not even be possible to accomplish in the end.

A90. Although pipe and joints may be installed in the wet or underwater, dewatering is still expected to be required for the installation of gravity sewer lines. Grading, setting pipe inverts, placement of bedding material, and other steps necessary for gravity sewer line installation are expected to require the trench to be dewatered.

Q91. Please consider providing more time to bid the subject project. The additional time required for distributing project documents in compliance with DFARS 252.204-702 to interested subcontractors and suppliers, especially the small business community, is a challenge. This challenge will require additional time to provide our subs and suppliers reasonable time for review and pricing prior to the bid date.

A91. See Amendment No. 0002.

Q92. This is in regards to P-210, P-220, P-203, and P-240. Do you have the motor FLA? Are these existing and remaining? If so, any pictures available? Concerned that these are possibly slow speed motors and the FLA would exceed the standard 400HP VFD ratings. It’s paramount that we obtain the FLA.

A92. Pumps P-210, P-220, P-230 and P-240 on drawing P-103 are new pumps. The existing pumps in Building

1358 will be removed. The motor FLA for the new proposed pumps is 445 amps.

Q93. If excavated soils are sampled and tested for reuse onsite, what are the applicable site-specific Hawaii

Department of Health Tier 1 Environmental Action Levels (unrestricted or commercial/industrial) to be used for allowing reuse of the soil onsite?

A93. Unrestricted.

Q94. SECTION 01 74 19 Paragraph 1.9.1 states “Redeposit excavated petroleum contaminated soil in same area and depth that was originally encountered, to the maximum extent practicable.” However, SECTION 02 61 13 describes procedures for excavation and handling of contaminated materials and Paragraph 3.3.1 states that “Areas of contamination shall be excavated to the depth and extent shown on the drawings”. Since petroleum contaminated soil is shown on the drawings, there is confusion as to whether the petroleum contaminated soil can be redeposited back in the excavation or needs to be sampled and tested for reuse or offsite disposal.

A94. Petroleum contaminated soil can be re-deposited back in the excavation if soil meets Department of Health

Tier 1 Environmental Action Level for unrestricted use, or if returned to the same location and depth where the soil was removed. Soil needs to be sampled and tested for reuse and for off-site disposal.

Q95. Drawing G-010 shows the footprint of ERN site (Former Navy Public Works Center Industrial Waste

Treatment Plant) and indicates that soil excavated within this footprint shall be handled as CERCLA waste.

Please clarify if all excavated soil within this footprint must be disposed offsite as CERCLA waste, or if non-surplus soil can be reused onsite if appropriate sampling and testing results confirm contaminant levels are below the Hawaii Department of Health Tier 1 Environmental Action Levels?

A95. Non-surplus soil can be reused on-site if soil meets Department of Health Tier 1 Environmental Action

Levels for unrestricted use, or if returned to the same location and depth where the soil was removed.

Q96. On Drawing G-008, the top box in the legend (dotted) indicates contaminated soil and presence of free phase product – what are the identified contaminants in this soil?

A96. See Amendment No. 0003 for amended drawing G-008.

Q97. On Drawing G-008, for the areas identified as contaminated soil (TPH-DRO, TPH-LRO) – were any other contaminants (other than TPH) detected in these areas?

A97. See Amendment No. 0003 for amended drawing G-008.

Q98 Section 32 31 13 Chain Link Fence and Gates paragraph 2.2.6 Top Rail and 2.2.7 Bottom Rail are said to be provided however in the drawing they are not shown. Please confirm if a top and bottom rail are to be provided for the fence and gates.

A98. Provide top rails and bottom tension wire for fence. Provide top and bottom rails for gates.

Q99. Section 32 31 13 Chain Link Fence and Gates paragraph 3.2.2.2 Top and Bottom Tension Wire are said to be provided. Is this in addition to the Top and Bottom Rails? Please confirm if both top and bottom rails and top and bottom tension wires are required for the fence and gates.

A99. Provide top rails and bottom tension wire for fence. Provide top and bottom rails for gates.

Q100. Section 33 30 00 Sanitary Sewers, Gravity p2.1.3.2 calls for the bolts, nuts and gaskets for flanged connections for ductile iron pipe to be stainless steel. There is no such requirement for ductile iron pipe in sections 33 11 00 Water Utility Distribution Piping or 33 34 00 Wastewater Piping, Pressure. Is this the intent or should stainless steel bolts, nuts and gaskets be used in these sections as well?

A100. Yes, provide Type 316 stainless steel bolts and nuts for all ductile iron flange pipe.

Q101. There are no details or specifications for the wall pipe. Are wall collars sufficient or is thrust collars required?

A101. Provide wall collar for pump suction pipe wall penetration.

Q102. Section 14 10 00 Dumbwaiter paragraph 1.1 lists ASME A17.1 and ASME 17.2 as a few of the governing codes for the dumbwaiter and 1.3.2 indicates that installation needs to be supervised by a certified elevator technician. Dumbwaiters are governed by ASME B20.1, as they are not elevators. Please revise specification to correctly address requirements and codes applicable to dumbwaiters in lieu of elevators.

A102. Per the request "Please revise specification to correctly address requirements and codes applicable to dumbwaiters in lieu of elevators.", although B20.1 is a safety standard for conveyors and related equipment, A17.1/CSA B44 is the safety code for dumbwaiters as explicitly stated within the ASME and its description. Spec section will not be revised because ASME A17.1 2016 edition is NAVFAC’s currently adopted code.

Q103. Volume 2 Drawing CU-105 shows the demolition of an existing 24” sewer line that conflicts with the location and elevation of the new 42” sewer line. Please confirm it is the contractor’s responsibility to provide a temporary by-pass at this location from SMH C9 to the existing 30” sewer line to maintain current flows until the new 42” sewer is complete and operational.

A103. The Contractor shall provide temporary bypassing of wastewater flows from SMH C9 to the existing 30" sewer line until the new 42" sewer is operational.

Q104. Volume 2 Drawing CU-107 shows the demolition of an existing 8” sewer line that conflicts with the location and elevation of the new 42” sewer line. Please confirm it is the contractor’s responsibility to provide a temporary by-pass at this location from SMH D2 to the existing 30” sewer line to maintain current flows until the new 42” sewer is complete and operational.

A104. The Contractor shall provide temporary bypassing of wastewater flows from SMH D2 to the existing 30" sewer line until the new 42" sewer is operational.

Q105. We previously provided technical specifications for the Flygt pump model NZ3400 to HDR during the design phase of the project. In reviewing the project plans and specifications, we noticed three concerns with the bid documents to bring to your attention for consideration:

The contract drawing P-103 shows a flange coupling adapter but no service inlet. Attached is the info on this inlet for the Flygt NZ3400.

The specification 221329-2.2.13.1 Pump maintenance Service Cart calls for a roll-back service cart, which is used for the smaller <100hp pumps, but a controlled hydraulic sled is used for the much heavier Pearl Harbor pumps. The drawings are correct for this hydraulic sled, but the specs indicate “roll back” which we don’t do for safety reasons due to the weight of the pump assy.

We recommend the following language replace the existing section:

2.2.13.1 PUMP SERVICE CART AND SERVICE INLET

Pump…