AMENDMENT_0004.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

The purpose of this amendment is to provide responses to remaining contractor requests for infomration (RFI's) and to provide amendments to the draw ings and specifications. (See Continuation Pages)

1. CONTRACT ID CODE PAGE OF PAGES

J 1 50

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

16C. DATE SIGNED

BY 31-Jul-2015

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 N40085-15-R-0310

X 9B. DATED (SEE ITEM 11)

17-Jun-2015

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

31-Jul-2015

CODE

NAVFAC MID ATLANTIC

MARINE CORPS IPT

9324 VIRGINIA AVE

NORFOLK VA 23511

N40085 7. ADMINISTERED BY (If other than item 6)

4. REQUISITION/PURCHASE REQ. NO.

CODE

See Item 6

FACILITY CODECODE

EMAIL:TEL:

N40085-15-R-0310

SECTION SF 30 BLOCK 14 CONTINUATION PAGE

SUMMARY OF CHANGES

SECTION SF 30 - BLOCK 14 CONTINUATION PAGE

The following have been added by full text:

AMENDMENT 0004

RESPONSES TO CONTRACTOR REQUESTS FOR INFORMATION (RFI’S)

1. Section 11 24 27 Air StripperItems - Page 3 para. 1.3.4 says to design per the wind loads listed. Page 2 lists no wind speeds. Please clarify

RESPONSE: REFER to Drawing G-005A, Design Criteria No. 10. The Specification will be clarified by Amendment.

2. The specifications did not call out the style of Backwash. It only said that the collection troughs or pipes are to accept a sustained backwash flow. So this raised the question, is this to be an air followed by water backwash design where the water level in the filters is lowered to a point, then air washed, then water backwashed at a maximum rate of 12 gpm/square foot? Please confirm this is the desired backwash process.

RESPONSE: Ultimately the detailed backwash sequence is the responsibility of the filter manufacturer as required to meet the specification performance requirements. The system that the Contract Document was designed around did include air scour during the backwash sequence. In accordance with Specification 46 61 01, Filtration Equipment Bypass Filters, Part 2.1 and 2.2 an alternate design that differs in detail and arrangement from that shown can be submitted but must include information per specification.

3. It was also noted that effluent Iron concentration is to be <0.1 mg/l. Please note the standard MCL for effluent iron concentration is 0.3 mg/l. Please ask the Engineer why the lower amount is specified and if the Standard MCL is acceptable.

RESPONSE: Filter effluent iron concentration shall remain <0.1 mg/L as specified.

4. Section 11 24 27 paragraph 2.2.1.6 a references section 26 29 23 Variable Frequency Drives.

Drawing E-703A does not show a VFD for the Decarbonator blower, please confirm that a VFD is not required.

RESPONSE: In accordance with Drawing E-703A and DI616A, the decarbonator blowers are constant speed. The Specification will be clarified by Amendment.

5. Section 11 24 27 paragraph 3.2 calls for foundation design for the Air Stripper. Please confirm that foundation design is not required.

RESPONSE: Foundation design for the Air Stripper is not required. The Specification will be clarified by Amendment.

6. Section 11 24 27 paragraph 3.8.5 calls for the effluent from the air stripper to be contained within the holding/mixing tank during the performance test. We cannot find this tank. Please advise us where the effluent is to be contained during the performance test.

RESPONSE: There is no holding mixing tank, during performance testing the air stripper effluent will follow the same flow path as during normal operations (relative to the air stripper). This test water produced during the commissioning phase of the project shall not be discharged into the potable water system and shall be disposed of by the Contractor in accordance with the Contract Documents. The Specification will be clarified by Amendment.

7. Drawing C-512A calls for a winch for the submersible pumps. Section 33 32 13.14 does not specify a winch. Please provide a specification for the winch.

RESPONSE: Delete winch requirement; will clarify by amendment.

8. The piping schedule in section 40 05 13 identifies buried Raw Water piping to be supplied as HDPE. Section 33 11 15 paragraph 1.2.1 calls for the material for buried Raw Water piping to be either ductile iron or PVC. Please confirm which requirements govern for the buried Raw Water piping.

RESPONSE: New raw water piping located at the water treatment plant (refer to yard piping drawings DP100A through DP106A) shall be in accordance with Section 40 05 13, new Raw Water Transmission Mains outside of the water treatment plant shall be in accordance with Section 33 11 15.

9. Section 43 21 41 paragraph 2.5.1 calls for a water level indicator assembly to be supplied with the new well pumps. Drawing C-504C does not show a water level indicator assembly. Is the water level indicator assembly required?

RESPONSE: Provide a water level indicator assembly; will clarify by amendment.

10. 13. Section 43 21 41 paragraph 2.5.2 calls for a pressure gauge to be supplied with the new well pumps. Drawing C-504C does not show a pressure gauge. Is the gauge required?

RESPONSE: A pressure gauge is required; will clarify by amendment.

11. Drawing ES120C shows modifications of existing wells. Does the existing piping that is to remain require coating?

RESPONSE: No.

12. We are not clear as to whether a temporary Government Field Office is required. Section 01 50 00, Paragraph 3.4.7 states that the Contractor shall pay up to $75.00 per month for long distant phone charges, which would imply that this would pertain to Government phone calls.

However, nothing else in this paragraph mentions that the field office is for the use of the Government. Paragraph 3.5 specifies a Government Field Office for the exclusive use of the QC Manager, who is being provided by the Contractor. Please clarify.

RESPONSE: A Government Field Office is not required.

13. Paragraph 3.5, Section 33 20 00, states that if the required well efficiency is not met, the Contractor shall abandon the well, vacate the site, and refund any previously paid monies to the Government. Please confirm that this language applies only to the specific well in question, and not to the entire project.

RESPONSE: This language applies only to the specific well in question.

14. Section 43 32 56 supplement 2/Table 3 Note 1 indicates that the membrane supplier is to provide the maximum guaranteed feed pressure submitted in the proposal or bid submittal. Does this need to be submitted with the General Contractor’s bid?

RESPONSE: Yes, per the Contract Documents the maximum guaranteed feed pressure shall be submitted with the General Contractor’s bid.

15. 18. Section 43 32 56 Paragraph 2.6 d references P&ID 08-N-612. We cannot find this drawing nor is it listed in the drawing index.

RESPONSE: The reference should refer to Drawing DI613A, DI614A & DI615A. The specification will be revised via Amendment.

16. 19. Section 43 41 16.16, Membrane Cleaning Tank data sheet does not list the material type for the tank.

RESPONSE: In accordance with Section 43 41 16.16, Para. 2.3, the Membrane Cleaning Tank (40CF-TNK41000) material of construction shall be fiberglass reinforced plastic (FRP). To further clarify to Contract Documents, the data sheet will be revised via Amendment to include tank material.

17. 20. Section 23 11 23 Paragraph 2.3.1.12 c calls for a factory control panel. P&ID’S DI628A and DI630A show panels and control stations furnished by the electrician for the pumps.

Is the factory control panel required?

RESPONSE: There is not a Section 23 11 23 in the Contract Documents. However, it is assumed that this RFI is in reference to Section 22 11 23.00 10, SUBMERSIBLE PUMP. In accordance with the P&IDs, Sump Pump 1 (40SPD-PMP19501), Sump Pump 2 (40SPD- PMP19502), Sump Pump (40SPD-PMP66000), and the Elevator Sump Pump (40SPD- PMP19503) shall be provided with a factory control panel as a part of the equipment package provided by the manufacturer.

In accordance with the P&IDs, all other submersible pumps shall be provided with control panels provided by Division 26 and Division 40 in accordance with the Contract Documents.

The Specification will be clarified via Amendment.

18. Drawing DP302A Section G depicts a hoist for the backwash pumps. Section 22 11 23 does not specify a hoist. Please provide a specification for the hoist. How many hoists are required (1 at each pump or a portable hoist)?

RESPONSE: A single, portable hoist is to be provided to server the three pumps. Refer to Drawing D-111A for the Backwash Wash Waste pump hoist design criteria.

19. P&ID DI630A appears to show VFD’s for the clarifier waste pumps. The data sheets in section 22 11 23 indicate that these pumps are constant speed, which is correct?

RESPONSE: In accordance with Drawing DI630A, the Clarifier Waste Pumps (70CW- PMP22001, 70CW-PMP22002, and 70CW-PMP22003) shall be provided with variable speed drives. The specification data sheet will be revised via Amendment to reflect this clarification.

20. The Solicitation indicates that an offer guarantee is required, but does not specify an amount. Please provide.

RESPONSE: Amount shall be at least 20% of the bid price but shall not exceen $3 million.

21. Page 54 of the Solicitation references Attachment G – Bid Schedule, which is to be part of our proposal, but it was not included with the documents.

RESPONSE: Besides the specifications and drawings in the attached files to download, there is a pdf file named "N4008515D0310Attachment_G_-_Bid_Schedule.pdf". It was uploaded with the specifications and drawings to NECO under the solicitation number.

Please utilize this form for price submittal.

22. Drawing D-172A has bold print stating “10’-0” Diameter Precast Manhole” in Section A for the Clarifier Waste PS. We assume that this is incorrect and that this is an existing structure which receives 3- new pumps only. Cleaning may be required to install the new pumps. Please confirm.

RESPONSE: Correct, in accordance with the Contract Documents the 10’-0” diameter Precast Manhole is shown with a light line/screened back to indicate it is an existing manhole. The pumps are shown dark lined to indicate that three new pumps shall be provided in the existing manhole. Contractor is required to provide all Work necessary to prepare the existing manhole, including, but not limited to, cleaning as required to install the new pumps.

23. Please provide the ground water and 100-year flood elevation of the project site.

RESPONSE: Bid in accordance with the construction documents provided.

24. Please provide the anticipated settlement of the piles.

RESPONSE: Less than 1/4 inch

25. Specification 33 16 13.16, Section 1.5.4G3 A2 through 5 shows blanks for information to be filled in. Please provide this information.

RESPONSE: Section 33 16 13.16, WIRE-WOUND CIRCULAR PRESTRESSED- CONCRETE WATER TANK, subparagraph 1.5.4.g.3.a) will be deleted in its entirety and replaced with the missing equations by Amendment

26. Specification 33 16 13.16, Section 2.4 requires galvanized reinforcing. This is an expensive option. Please confirm that galvanized steel is required in the tank floor, wall and dome.

RESPONSE: Galvanized reinforcing as specified in the referenced section is not required.

Section 33 16 13.16, WIRE-WOUND CIRCULAR PRESTRESSED-CONCRETE WATER TANK, Para. 2.4 will be deleted in its entirety by Amendment.

27. Specification 33 16 13.16, Section 2.8 requires a three-rail handrail system. Drawing Sheet D-390A, Section A shows an elevation of a two-rail handrail system. Please confirm that a typical two-rail system is acceptable.

RESPONSE: Per Drawing D-390A, a two-rail handrail with toeboard provided in accordance with Section 05 52 00, METAL RAILINGS shall be provided. The specification will be revised by Amendment.

28. Drawing Sheet D-192A, Plan and Drawing Sheet D-390A, Section C show three wall penetrations. Please provide wall pipe sizes for wall penetrations.

RESPONSE: The subject wall penetrations pipes shall be as indicated in the Details:

3 inches for 95LIT-15500: Refer to Detail A3/DI802A, 2 inches for 95LSHH-16300: Refer to Detail A1/DI807A, 1.5 inches for 95LSLL-16000: Refer to Detail C3/DI807A

29. Drawing D-192A, Top Plan, shows overflow eyelids located on the dome at a 15'-0" radius.

Dome overflows should be located 3" above the high water line and 2'-6" from the inside face of the wall.

RESPONSE: Dome overflow eyelids/overflows may be placed per the tank manufacturer’s recommendation/standard design. A clarifying note will be added to Drawing D-192A by Amendment.

30. Can an offeror show relevancy in scope in one project, and size in a separate project?

RESPONSE: Size and scope need to both meet the criteria in order to be considered a relevant project.

31. If similar in size and scope, will waste water treatment plant projects be considered relevant?

32. Can offers submit projects with a total construction value of $10 million or greater if the submitted project adequately meets all of the requirements for similar scope relevancy?

RESPONSE: Size and scope need to both meet the criteria in order to be considered a relevant project.

33. Document 00 22 13.00 20 (Appendix G) Part 1.2 a. says the basis of award will be made on the total sum of line items 0001AA through 0001AF. Section 00010 (Solicitation Contract Form) CLIN 0001 only calls for the total price of items 0001AA through 0001AE. Please confirm that item 0001AF should be included in CLIN 0001.

RESPONSE: 0001AF should be included in CLIN 0001 Section 00010 however contractors should place their attention on Attachment G - Bid Schedule for proposal submittal as the CLIN structure in section 00010 currently serves as a place holder for the awarded CLINS and is limited by software capabilities.

34. It doesn’t seem that the CU drawings match the DP drawings. Please confirm the routing of the 6” fire line to the operations building.

RESPONSE: Bid in accordance with the construction documents provided.

35. The fire line extension for the Building 4357 option could be done with a lot less pipe.

Could we tie on to the new W1 line south of building 4357 near the new fire hydrant in lieu of running it around the site from the tie in location north of the new operations building?

RESPONSE: The suggested routing is not possible since the fire pumps in the new treatment building serves Building 4357. Bid in accordance with the construction documents provided.

36. Sheet C-512A indicates the sanitary force main to be 3”, but the site plan on sheet CU101A shows it as 4”. Please clarify

RESPONSE: 3” sanitary force main; will clarify by amendment.

37. Both Sections 31 23 00.00 20 and 31 62 13.20 reference unit prices for unsuitable and petroleum contaminated soils and precast/prestressed piles. We do not see any unit prices listed in Section 00010. Please clarify.

RESPONSE: Besides the specifications and drawings in the attached files to download, there is a pdf file named "N4008515D0310Attachment_G_-_Bid_Schedule.pdf". It was uploaded with the specifications and drawings to NECO under the solicitation number.

Please utilize this form for price submittal.

37. Section 00010 – Solicitation Contract Form, Items 0003 and 0004 conflict with the order of pricing detailed in Attachment G. Please revise Section 00010 accordingly.

RESPONSE: Disregard CLIN structure in section 00010. Contractors should place their attention on Attachment G - Bid Schedule for proposal submittal as the CLIN structure in section 00010 currently serves as a place holder for the awarded CLINS and is limited by software capabilities.

38. Section 00010 – Solicitation, page 20 of 54, none of the items at the bottom of the page are checked. Shall we assume therefor that none of those certifications are required?

RESPONSE: All of the certifications listed are required.

39. The FF&E budget mentioned in Specification 01 30 01.00 22 part 1.3 does not equal the sum of CLIN numbers 004 and 005 in Specification 00 22 13.00 20 page 6 under “Gov. FF&E Estimate” columns. Please clarify that the values on in 00 22 13.00 20 take precedence and the value in 01 30 01.00 22 can be disregarded.

RESPONSE: Addressed in Amendment 002.

40. Specification 00 22 13.00 20 description for CLIN number 0001AF limits application of unsuitable petroleum saturated soils to the limits of excavation for installation of the proposed concentrate line. If unsuitable petroleum saturated soils are encountered during course of constructing other portions of the project, please clarify how the Contractor will be compensated for said unforeseen condition. Will the same CLIN 0001AF unit pricing be applied or will a new cost proposal be requested.

RESPONSE: Bid the project as presented by the plans and specifications.

41. Please provide a list of Partnering Facilitators referenced in Section 01 30 00 part 1.9.1 so that we may contact them for pricing.

RESPONSE: A list of Partnering Facilitators is not available from the Contracting Officer. Please delete "A list of Partnering Facilitators is available from the Contracting Officer." from Section 01 30 00 part 1.9.1.

42. Is the Administrative Assistant mentioned in Specification 01 45 00.00 20 part 1.5.6 a mandatory requirement or optional?

RESPONSE: The administrative assistance for the QC is mandatory.

43. Is a building permit required for this project? If so, what jurisdiction is in authority over the construction at this location?

RESPONSE: A building permit is not required.

44. Clause 52.225-11 is incorporated by reference, however language contained therein is somewhat ambiguous when trying to determine if the “Buy American” provision is in effect for construction of this project. Please clarify.

RESPONSE: The provision is associated with FAR Clause 52.225-10 which is not in this Request for Proposal.

45. Clause 52.229-2 on page 36 of the Solicitation states that North Carolina sales taxes are to be included in the bid price. Clause 52.229-3 is incorporated by reference and also states that North Carolina sales taxes are to be included in the bid price. This is highly unusual. Please verify that it is the intent of the Federal Government that the successful Contractor, working on a Government installation, pay sales tax to the state in which the installation resides.

RESPONSE: FAR 52.229-2, North Carolina State and Local Sales and Use Tax, is properly included in a solicitation for work in North Carolina. It is important to note that the FAR contains a tax clause specifically for North Carolina which indicates that the contract price should include "North Carolina State and local sales and use taxes to be paid on materials." North Carolina does not provide the sales tax exemption for materials to be used on a Federal installation as do many other states. As noted in FAR 52.229-2, the contractor is to certify at the applicable times the amount of taxes paid. The Government takes those certifications and is eventually refunded that amount by North Carolina.

46. Our company is currently registered in sam.gov and we have a CAGE code. Do we still need to answer the “clauses” questions starting on page 8 of the solicitation? This would also apply to clauses incorporated by reference which require us to answer certain questions.

RESPONSE: Yes.

47. Is a cover letter required with our proposal, and if so, what statements are required thereon?

RESPONSE: No Cover letter is required.

48. Is the price proposal, SF 1442, CLINS, Bond, and Reps and Certs and the technical proposal to be submitted in two separate binders, or are they to be submitted in one binder?

RESPONSE: Correct. Two separate binders (Price to include the items listed above and Technical factors according to the solicitation.)

49. It does not appear that page 11 of 11, in Attachment E, the Small Business Subcontracting plan is necessary. The page refers to periods that are traditionally only for a MACC. Please confirm page 11 of 11 in Attachment E is not needed.

RESPONSE: Correct. Please disregard page 11 as it does not correspond to the structure of a standalone construction project such as this one.

50. Drawing S-147A calls for Open-Web Steel Trusses indicated on Note 17 over the Base Chemical Storage Area (40-217), Sodium Hypochlorite Storage (40-216), and Acid Chemical Area (40-129). Drawing A-142A has references to details E & F on Drawing A-343A, these details call out “Light Gauge Metal Trusses”. Please clarify.

RESPONSE: Trusses shall be Open-Web Steel Trusses. Drawing A-343A will be revised by Amendment.

51. Please confirm whether the steel pan stairs are to be galvanized or primed steel?

RESPONSE: In accordance with the Contract Documents, concrete filled metal stairs shall be shop painted steel per Section 05 51 00 METAL STAIRS, Para. 2.17.8.

52. Note #29 on S-144A is for removable posts and chain with restricted access signs as per detail B5/S-540A, is pointing at 2 circles in the process bay area that appear to be guard posts.

Please confirm it is the intent for these 2 circles to be guard posts as per Note #27.

RESPONSE: On Drawing S-144A the two circles located immediately to the South of the CMU wall are guard posts per Note #27. Drawing S-144A will be revised by Amendment.

53. Note 12, S-143A & S-144A calls out a HSS 6x6x1/2” column with base. Note 8 on S-343A calls out this column as HSS 6x4x1/2”. Please confirm the correct column size.

RESPONSE: Column shall be HSS 6x6x1/2". Drawing S-343A will be revised by Amendment.

54. Specification section 050523.16,1.3.1 and 051200, 1.3 require AISC certification for both the fabricator and erector. Some of the metals erectors have stated that the requirement for an AISC Certified Erector has been waived by the FEAD in the past, and ask that this requirement be waived for this project. Please confirm if an AISC certified fabricator may be an acceptable erector.

RESPONSE: The requirement for a certified erector can be waived but we are retaining the requirement for an AISC-certified fabricator.

55. Drawing S-343A, Note #9, calls out a HSS 12x6x1/4” tube. Drawing A-344A detail K identifies this same member as an I-beam. Please confirm this member is to be a steel tube as shown on S-343A, note #9.

RESPONSE: In accordance with the Contract Documents, subject beam shall be HSS 12x6x1/4". Detail K on Drawing A-344A graphically depicts an I-beam, but correctly references, “BEAM, SEE STRUCT DWG’S”. No change to the Contract Documents is required.

56. Please confirm all structural connection clips/embed plates/columns/tubes/angles are to be hot dipped galvanized unless otherwise noted.

RESPONSE: Structural steel and miscellaneous metal fabrications shall be painted unless noted otherwise in the Contract Documents. To further clarify the design intent, the Exterior Finish Schedule on Drawing A-643A will be revised by Amendment to include the following note: “All exposed exterior steel surfaces SHALL be painted WITH paint system A5.” the Interior Finish Schedule on Drawing IN-640A will be revised by Amendment to include the following note: “All interior exposed structural steel members, plates, angles and connectors SHALL be painted with paint system A5.”

57. Drawing S-146A has one call out for note #2, non-bearing wall. Please confirm this is the only non-bearing wall that receives support angles as per detail A2/S-541A, or if all walls should be assumed to be non-bearing unless otherwise noted by note #1.

RESPONSE: All interior CMU walls on second floor (S-146A) shall be non-bearing and be laterally supported per C5/S-541A and A2/S-541A. Note #1 on Drawing S-146A should read, “12” CMU NON-BEARING WALL. SEE C5/S-541A AND A2/S-541A”. Drawing S- 146A will be revised by Amendment.

58. The window and relight schedule, drawing A-643A, calls for detail C3/A-810A as the head detail for window 40W-2. This detail does not exist. Please confirm the correct detail is C2/A- 810A.

RESPONSE: The correct detail is C2/A-810A. Drawing A-643A will be revised via Amendment.

59. Door/Window/Louver schedules reference the architectural details for the head/jamb/sill installations. Some of these architectural details (e.g. C1/A-809A) have a reference to the structural detail as “A4/S-811 SIM”. This referenced detail shows an additional embed plate that the head lintels are to be welded to. Please confirm whether it is the Engineers intent to have the masonry lintels installed with embedded bolts as per the architectural details or welded to plates as per the structural detail.

RESPONSE: In accordance with the Contract Documents, the masonry lintels shall be provided with welded plates and embedded bolts in accordance with Detail A4/S-811. No change in the Contract Documents is required.

60. Detail C2/S-819A calls out an 8” DIA guard post. Spec section 055013, 2.7 calls out 6” guard posts. Please confirm if all bollards are to be 6” in diameter or provided as referenced in the drawings.

RESPONSE: Guard posts shall be 6 inches diameter per Section 05 50 13, MISCELLANEOUS METAL FABRICATIONS, Paragraph 2.7. Detail C2/S-819A will be revised via Amendment.

61. Drawing S-310A, section view of the strainer slab & raw water top slab, appear to show a symbol for crushed stone. However, the structural notes on drawing G-005A, Foundation Note 2B states that these structures, may bear on compacted native subgrade or compacted structural fill. Please clarify if crushed stone is required under pile supported foundations.

RESPONSE: In accordance with the Contract Documents, foundation bearing surfaces shall be as noted on Drawing G-005A, Foundations. No change in the Contract Documents is required.

62. Drawing S-149A, Operations & Treatment Building Lower Trench Plan - Sheet Keynotes #7 & #8 list TOC Elevations for the trench slab at 28.98 and 28.58. These elevations cannot be correct, because the higher main building slab is approximately EL 27.00. Please clarify the required trench slab elevations.

RESPONSE: Drawing S-149A, Sheet Keynote #7 and Sheet Keynote #8 are incorrect.

Keynote #7 should read “TOC HP EL 21.98” and Keynote #8 should read “TOC LP EL 21.58”. Drawing S-149A will be revised via Amendment.

63. Part 13.B of Standard Form 1442 requires an offer guarantee. Is there a specific form that should be used to meet this requirement?

RESPONSE: Work with your surety to submit a Standard Form 24 Bid Bond along with your price proposal.

64. Clause 52.228-1 “Bid Guarantee” is incorporated by reference. Please clarify the percentage and/or dollar value that our bid guarantee should be for. Bid Guarantee (bid bond) cannot be ordered without knowing this information.

RESPONSE: Amount shall be at least 20% of the bid price but shall not exceed $3 million.

65. Section 40 05 13, 1.8.2 requires us to supply a galvanized operating wrench for each type and size of valve. Please confirm that this is required.

RESPONSE: No, an operating wrench for each type and size of valve is not required.

Provide a total of four, 4.1 foot long, galvanized T-handled operating wrenches. The specification will be revised via Amendment to reflect the change.

66. Sheet C-307C scale issue: the plan view measures 451 LF and the profile measures 500 LF.

Please confirm that the profile is the correct length.

RESPONSE: Plan view will be updated by amendment.

67. Due to the installation of the Raw Water Transmission main along Crooked Road and Skeet Range Road the gavel will need to be restored. Please provide the limits of restoration and a detail for the gravel road restoration required in these areas.

RESPONSE: Gravel road restoration will be clarified by amendment.

68. Please provide specifications for the vent chamber referenced in Callout #7 on Detail A1 on drawing DI801A.

RESPONSE: The vent chamber referenced on Detail A1/ DI801A, Detail A3/DI801A, and Detail A1/DI802A is not required. Drawing DI801A and Drawing DI802A will be revised by Amendment to reflect this change.

69. Please provide specifications for the two-valve block and bleed manifold referenced in Callout #8 on Detail A1 on drawing DI801A.

RESPONSE: Two-valve block and bleed manifold shall be a single, pre-engineered unit of stainless steel construction designed for the isolation and calibration/venting of static pressure gauges/transducers. Manifold shall consist of a ½” FNPT process port, a ½” FNPT instrument port, a ½” FNPT vent/test port, one block/isolate valve, and one vent/test valve. Provide manufacturer’s standard bonnet packing and seat material that are suitable for contact with potable water. Two-valve block and bleed manifold shall be as manufactured by Anderson, Greenwood & Co., Type PTM; Hoke, or approved equal. The Contract Documents will be revised by Amendment to include this specification.

70. Please provide specifications for the three-valve equalizing manifold referenced in Callout #6 on Detail A1 on drawing DI802A

RESPONSE: Three valve equalizing manifold shall be a single, pre-engineered unit of stainless steel construction designed for the isolation and equalization of differential pressure transducers. Manifold shall consist of two ¼ ” FNPT static/test ports, two ½” FNPT instrument ports, two ½” FNPT process connection ports, two block/isolate valves, and one equalizer valve. Provide manufacturer’s standard bonnet packing and seat material that are suitable for contact with potable water. Three-valve manifold shall be as manufactured by Anderson, Greenwood & Co., Type M1; Hoke, or approved equal. The Contract Documents will be revised by Amendment to include this specification.

71. Drawing S-803A, detail C1 – Precast Concrete Pile to Slab Connection – This detail does not show any rebar doweling of the precast pile into the slab. Likewise, the precast pile spec (31 62 13.20) is silent with regard of rebar doweling of the precast piles. Please confirm no rebar connection is required from the pile top to the slab.

RESPONSE: In accordance with the Contract Documents, no rebar connection is required from the pile head to the slab, per Detail C1/S-803A. No change in the Contract Documents is required.

72. Specification Section 01 50 00, 2.2.5 states that a temporary 6' fence be installed at the limits of disturbance. Please confirm this note only applies to the WTP site, and not the concentrate/ raw water pipeline and well sites.

RESPONSE: Paragraph 2.2.5 only applies to the WTP site. At each new well house access road, provide a metal swing gate in accordance with the detail provided in an upcoming amendment.

73. Per drawing CS101A Improvement Note #23 requires chain link fence without cable reinforcing, the same line of fence is shown again on drawing CS103A via note #23 with cable reinforcing. A similar instance can be seen on drawing CS104A where note #23 excludes cable reinforcing, the same fence line is called out on drawing CS103A note #23 where it includes cable reinforcing. Please clarify as to which fence locations are cable reinforced.

RESPONSE: Will clarify by amendment.

74. After discussion with aggregate suppliers, the select materials specified in section 31 23 00 – 2.1.6, are not locally available. Please confirm that the following materials are acceptable substitutions to the aggregates listed in Specification section 31 23 00 – 2.1.6 “Select Material”?

RESPONSE: Question incomplete.

75. I would like to know if this project will require any Air Barrier testing or commissioning services.

RESPONSE: Yes, building Air Barrier Testing will be required. The testing will be performed by the Contractor and witnessed by the Government Commissioning Authority.

76. In Section 46 61 01 ByPass Filters, there are several spec comments referencing other sections but do not give the actual section numbers. Instead each have “xx xx xx”.

Can the missing section numbers be supplied? These are comments are as follows:

Section 2. 5. 10 – “Refer to Electric Motor Actuator schedule in Section XX XX XX

Section 2. 5. 11 – “All filter and interconnecting piping and fittings must be cement line ductile iron conforming to Section XX XX” .

Same section – “All air piping for air scour must be stainless steel, conforming to Section XX

XX XX.

3.7 Manufacturer’s Services. “See the General Requirements Section XX XX XX.”

3.8 Startup & Functional Testing and Inspection. “Refer to Section XX XX XX – Facility Start- Up/Commissioning requirements.”

RESPONSE: Referenced paragraphs in Section 46 61 01 FILTRATION EQUIPMENT (BYPASS FILTERS) of the Contract Documents are complete. Recommend Prospective Bidder confirm they are referencing “As-Bid” set of documents.

77. Per EM 385-1-1 referenced in Specification Section 01 35 26 - Governmental Safety Requirements, a dedicated full-time Site Safety and Health Officer is required to be onsite at ALL times. Please confirm that for the scope of this project it is necessary that the SSHO be a full time individual having no other duties or responsibilities beyond the work described therein.

RESPONSE: The project requires a full time SSHO be onsite at all times.

78. May the QC Manager take on additional roles unrelated to the scope of work presented in Section 01 45 00.00 20 or are the restrictions on this person’s duties listed therein going to be enforced?

RESPONSE: No. A full time QC Manager is required. The duties of the QC Manager are to manage and implement the QC program on this contract.

79. Specification 01 45 35 states that the Contractor is to pay for the special inspector costs.

Does this include the special inspections listed in Section 01 45 00.00 20 part 1.5.5?

RESPONSE: See Specification Section 01 45 35 part 1.1

80. Is it the intent of Section 01 45 00.00 20 part 1.5.4 to require an equally qualified Alternate QC Manager if the Primary QC Manager is gone for more than two weeks? What if said QC Manager is going to be gone for only one week? How does this coordinate with the requirement of part 1.4 which says that no work or testing shall be done without the QC Manager being on site?

RESPONSE: Specification Section 01 45 00.00 20 Part 1.5.4 The qualification requirements for the Alternate QC Manager must be the same as for the QC Manager. The period of absence may not exceed two weeks at one time, and not more than 30 workdays during a calendar year. Specification Section 01 45 00.00 20 Part 1.4 No construction work or testing may be performed unless the QC Manager is on the work site.

81. Notes 23, 25, 26, & 36 on drawing S-147A reference details which illustrate roof connection embeds in CMU walls. The detail for notes 23, 25, and 36 explicitly states that this connection detail may be used for “masonry or concrete walls, see plans.” The detail referenced by note 26 (detail A4/S-813A) does not have the same clarifying note within the detail. Please confirm that the embeds illustrated in the details referenced in these notes are to be embedded in the cast in place concrete wall around the operations building. Specifically, the deck/wall attachment (note

26) is to be embedded in the concrete wall and the masonry veneer installed around it.

RESPONSE: Detail A4/S-813 may be used for masonry or concrete walls. For note 26 on S-147A, secure ledger angle directly to concrete wall and install masonry veneer around it.

82. Page D-170A, Detail A – shows a concrete collar and calls out detail A3 on page “C809A”.

Please provide detail in question.

RESPONSE: The concrete collar indicated on Drawing D-170A should reference Detail A3 on Sheet S-809A. Drawing D-170A will be revised via Amendment.

83. Page S-191 A – Pipe Under Finished Water Tank – pipes do not appear to be concrete encased per drawings. Please confirm that there is not requirement to encase these pipes.

RESPONSE: All pipes below buildings/structures foundations shall be concrete encased.

All underslab piping located beneath the Finished Water Tank (95FW-TNK-1500) shall be concrete encased per Detail A1/S-803, A1/S-804A, and C1/S-804A. The Contract Drawings will be revised via Amendment.

84. Page A-340A – in middle part of slab it calls out Fluid Applied Waterproofing under the slab, in addition to the Continuous Underslab Vapor Barrier. Please confirm that waterproofing is not required, and that we should install the vapor barrier.

RESPONSE: In reference to Drawing A-340A only, Fluid Applied Waterproofing (Air & Vapor Barrier) as indicated under the slab is not required. The bentonite waterproofing for the elevator pit below grade shall remain as indicated. The continuous underslab vapor barrier shall be provided in the referenced location as indicated. The Contract Documents will be revised by Amendment.

85. Page S-145A – Second Floor Slab where Stairs (Note 5) connect to Second Floor. There appears to be a beam or thickened slab parallel to BM 08 and intersecting BM 10 that spans the area of the Lobby below. It is not located where there is a supporting masonry wall below. Please provide information about what this is supposed to be.

RESPONSE: Dashed lines parallel to beam BM 08 indicate 12” CMU wall with full depth lintel below the slab.

86. Page S-147A – Concrete Wall Elevations – top of wall elevations for horizontal concrete walls are well marked (Notes 11 & 13). However, the top of concrete at the raked walls is unclear (Notes 3, 25, 36, etc.). Some of the details called also show the embeds in masonry walls. Please provide elevations at the apex of all raked walls, and which walls should have masonry on top for the embeds.

RESPONSE: Contractor shall coordinate elevation of peak at raked walls. Notes 23, 25, 26, and 36 refer to details that can be used for concrete or masonry walls. Operations and Treatment Building walls shall be concrete.

87. Are the trusses and other relevant structural components in the Operations and Treatment Building designed to support the various HVAC components shown in the bid documents?

RESPONSE: Refer to ROOF TRUSS NOTES on Drawing S-148A.

88. Section 11 24 27.1.3.1, What is the wind speed that should be used in the tower design?

RESPONSE: Refer to Drawing G-005, Design Criteria #10.

89. Section 11 24 27.1.3.3.1 Change the wording to “Maximum at maximum water flowrate”.

This will prevent the oversizing of the Blower and confirm wording of 2.2.1.3.a.1.

RESPONSE: At the maximum hydraulic flow rate, air stripper (decarbonator) system shall provide a minimum air to water ratio of 30:1, or as required to reliably meet carbon dioxide removal performance requirements, whichever is higher. The specification will be clarified by Amendment.

90. Section 11 24 27.2.2.1.4.a, Add the following to the first sentence “The blower housing shall be manufactured of the same material as the Air Stripper.

RESPONSE: At the Contractor’s option, the blower housing may be manufactured of the same material as the Air Stripper shell or as heavy gauge welded steel as specified. The specification will be clarified by Amendment.

91. Section 11 24 27.2.2.1.5.i.1, Change the “½ inch grid” to (#24 mesh). This conforms to the 10 States Standards for filtering air used in application.

RESPONSE: The blower inlet filter shall be #24 mesh stainless steel screen. The specification will be revised by Amendment.

92. Section 11 24 27.2.3.1.1, After the word “inhibitors” add “and include a thermoplastic liner”.

RESPONSE: No change is made. Bid according to the Contract Documents.

93. Section 11 24 27.2.3.1.2, Change the words fiberglass reinforced plastic to “NSF certified thermoplastic”. This matches our POLYSTRONG™ NSF certified material.

RESPONSE: No change is made. Bid according to the Contract Documents.

94. Section 11 24 27.2.3.2.3, Change the sentence “Structural supports shall be 316 stainless steel” to “Structural supports shall be NFS certified thermoplastic.”

RESPONSE: No change is made. Bid according to the Contract Documents.

95. I would like to know if this project will require any Air Barrier testing or Commissioning services.

RESPONSE: Building Air Barrier Testing will be required. The testing will be performed by the Contractor and witnessed by the Government Commissioning Authority.

96. Is the applicability of Section 40 05 13.96 to the off-site shop fabricated stainless steel process piping spools limited to that described at 40 05 13 Part 1.4.2 (i.e. qualifications of procedures and welders); or are all parts of 40 05 13.96 applicable to the piping spools?

RESPONSE: All parts of Section 40 05 13.96 are applicable to the piping spools.

97. If all parts are applicable, the minimum NDE shown in Table I of 40 05 13.96 Part 3.2, for the 'All others' Piping Service Conditions (to which the ambient, low pressure water applications of the stainless steel piping apply) includes 'Random RT' for all 'Type Welds' listed in that table.

This table is apparently from Piping Code ANSI B31.1; but that pressure piping standard only requires visual examination (VT) of welds, not RT of any kind for these service conditions.

B31.1 is for Power Piping (and boilers); yet under this Code, RT is deemed unwarranted. In our opinion, the quality examinations for the stainless steel process piping on this projects applications should come under ANSI B31.3 for 'Process Piping'; and the applications should be considered 'Category D Fluid Service' per Section 341.4.2-which also only requires visual examination of welds for this projects service conditions. The inclusion of 'Random RT' is a more stringent and unnecessary examination requirement for these relatively benign applications and service conditions. We request that you amend this subsection to delete the 'Random RT' requirement in the three 'Type Welds' listed in that Table I; acknowledging that the qualified procedures and welders specified, and the Visual examination of welds still specified under Table I is sufficient to assure high quality results for this project's water treatment applications.

RESPONSE: Random RT is not required for SST piping with a test pressure of 150 psig or less. The Random RT requirement remains for SST piping with a test pressure higher than 150 psig (e.g. Membrane Feed Pipe downstream of membrane feed pumps). The specification will be modified by Amendment.

98. Now, if all parts of 40 05 13.96 are applicable to the stainless steel piping, and you do not remove the 'Random RT' requirement requested above; we observe that the details of the RT examination specified at Part 3.2.1 is similar to that from ANSI B31.3 at Paragraph 341.3.4.

However, your specification omits the Code prescribed progressive examinations upon the revelation of defects; and requires an additional 5% of the welds be examined; and that any defects revealed at that point will unreasonably rush to a rejection of the entire group of welds.

This is an even more onerous requirement relative to the applications' service conditions; which unnecessarily risks rejection of 'that entire group of welds' (i.e. all welds performed). This risk adds significant cost to your project. We request that you amend Part 3.2.1 to require 5% of the piping welds, randomly selected, be spot x-rayed in accordance with B31.3 Paragraph 341.3.4 "Progressive Sampling for Examination".

RESPONSE: See response in the previous question.

99. Regarding removal and disposal of the contaminated soils on this project, will EM 385-1-1 Section 33 HAZWOPER requirements be applicable? Of particular concern due to time and cost are the 40-hour off site training requirements for those individuals potentially coming in contact with this material?

RESPONSE: EM 385-1-1 Requirements apply

100. Please advise what type of lining to use for the storm drain pipe that is called out to be ductile iron on drawing CU001A.

RESPONSE: Ductile iron pipe shall have cement-mortar lining as specified in Section 33 40 00, paragraph 2.1.1.2, Ductile-Iron Piping.

101. Drawing C-508A, detail A5 depicts a catch basin for 18” pipe and smaller. Please provide a catch basin detail for pipe larger than 18”.

RESPONSE: Catch basins called out as NCDOT Standard Catch Basin: C.B. (NCDOT) are detailed on Sheet C-513A “NCDOT Traffic Bearing Grated Drop Inlet”.

102. In the top left corner of drawing CU001A, in the sanitary structure data table, there is a callout to see note 1. Please clarify which note this is referencing.

RESPONSE: Note added to sheet CU001A by amendment.

103. Sanitary structures 1 & 7 on drawing CU001A callout drop manholes. Please provide a detail for sanitary drop manholes.

RESPONSE: Drop connection detail added on sheet C-513A by amendment.

104. Please advise what type of pipe to use for the sanitary line that is on drawing C-305A.

RESPONSE: Sanitary pipe material shall be ASTM D3034, SDR 35 as specified in Section 33 30 00, paragraph 2.1.3.1 PVC Plastic Gravity Pipe and Fittings.

105. Please advise what type of pipe to use for the water main line that is on drawing C-306A.

RESPONSE: Will clarify by amendment.

106. Please provide the DR rating and the type of material for the backup flanges on the HDPE lines.

RESPONSE: Per Section 40 05 13 PIPELINES, LIQUID PROCESS PIPING, Para.

2.8.3.2, HDPE flanges and flanged fittings shall be Class 125, ASTM A240/A240M, TP316 stainless steel backing flanges. As specified, the flanges shall have the same pressure rating as the piping it is attached to.

107. Drawing CU001A calls out 24’ of 15” RCP between pipe connections 75 & 74. Drawing CU103A shows this pipe as new. Please clarify if the 15” RCP between pipe connections 75 & 74 shall be new.

RESPONSE: Existing pipe between pipe connections 74 and 75 is to remain. Schedule on CU001A will be revised by amendment to remove pipe shown as new.

108. If new 15” RCP is required between pipe connections 75 & 74. Is the existing pipe required to be removed?

RESPONSE: Existing pipe is to remain.

109. Drawing DP103A calls out a 20” gate valve on the RW line adjacent to the hot tap. Please advise if the 20” gate valve is in addition to the tapping valve or if the 20” gate valve is part of the tapping valve assembly. This arrangement occurs on the 20” FW on drawing DP102A and the 14” MC/BWW on drawing DP104A. Please review these arrangements as well and advise if the gate valve that is depicted is in addition to the tapping valve or if the gate valve is part of the tapping valve assembly.

RESPONSE: Where a “hot tap” or “tapping sleeve” are indicated on the Drawings, the valve shown is part of the tapping sleeve/valve assembly. An additional valve located immediately downstream of the tapping sleeve/valve assembly is not required.

110. Drawing DP104A calls out a 14” MC/BWW line. Per the pipe schedule in section 40 05 13 the MC lines shall be HDPE and the BWW lines shall be PVC. Please advise if this line will require a combination of PVC and HDPE. If so, please provide a transition point between the different materials.

RESPONSE: The subject MC/BWW line is buried and shall be HDPE for its entire length.

The MC/BWW line is tied to the 8” MC line, which is specified as HDPE. The buried section of the 6” BWW will be revised from PVC to HDPE to simplify the transition between materials. The exposed BWW will remain PVC. Section 40 05 13 PIPELINES, LIQUID PROCESS PIPING will be revised via Amendment.

111. Drawings CU101A, CU103A and CU104A depict a 6” fire main. Please advise if there are any special requirements (i.e. permits, licenses, etc.) that are required to install this line.

RESPONSE: NCDENR has reviewed this project; will provide additional permit letters by amendment.

112. The pipe schedule in section 40 05 13 does not call out chemfluor tubing for the liquid lime lines. Please advise if tubing is required for the liquid lime lines.

RESPONSE: No tubing is required for the…