W912DR-17-B-0001-00004.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 amedment is to Delete Amendment 0003 in its entirety as originally issued and replace it w ith the information provided in the Amendment 0004 Changes section.

1. CONTRACT ID CODE PAGE OF PAGES

1 18

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

16C. DATE SIGNED

BY 08-Dec-2016

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 W912DR-17-B-0001

X 9B. DATED (SEE ITEM 11)

08-Nov-2016

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 X is extended, 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

08-Dec-2016

CODE

U.S. ARMY CORPS OF ENGINEERS, BALTIMORE

10 S. HOWARD STREET

ROOM 7000

BALTIMORE MD 21201

W912DR 7. ADMINISTERED BY (If other than item 6)

4. REQUISITION/PURCHASE REQ. NO.

CODE

See Item 6

FACILITY CODECODE

EMAIL:TEL:

W912DR-17-B-0001

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 CHANGES

AMENDMENT NO. 4 TO ADVERTISED W912DR-17-B-0001

EFFECTIVE DECEMBER 8, 2016 PAGE 1 OF 6 PAGES

SECTION 00010- THE TIME AND DATE OF THE PROPOSAL FOR THIS PROJECT IS

EXTENDED TO DEC 13, 2016 10:00AM, LOCAL TIME. REVISE STAND FORM 1442, BLOCK

13 a, OF THE SOLICITATION TO REFLECT THIS CHANGE.

1. AMENDMENT 0003: Delete Amendment 0003 in its entirety as originally issued.

SOLICITATION:

2. SECTION 00010 - PRICE SCHEDULE: Delete the previously issued Price Schedule and substitute therefore the attached revised Unit Price Schedule, dated DEC 8, 2016.

SPECIFICATIONS:

3. Section 01 32 01.00 10, Project Schedule: page 8, paragraph 3.3.8.d Milestones – Meigs Vault, delete

“1. Architectural – Substantial completion of lead paint abatement.”

4. Section 01 32 01.00 10, Project Schedule: page 8, paragraph 3.3.8.b Milestones – Influent Gatehouse, delete

“1. Architectural – Substantial completion of lead paint abatement.”

5. Section 01 50 00: page 8, delete paragraph 3.6 GOVERNMENT FIELD OFFICE in its entirety.

6. Section 04 01 00.91, page 14, paragraph 3.1.1 Mortar and Stucco Analysis, line 4, Remove

“Type S”.

7. Section 23 09 23: page 11, paragraph 3.1 EXISTING CONDITION SURVEY – Delete section 3.1 in its entirety.

8. Section 31 00 00, Earthwork: page 5, paragraph 3.2 General Excavation, 10th and 11th line, delete

“in areas approved for surplus material storage or designated waste areas.” and insert to the end of this sentence “as specified in Paragraph 3.11 DISPOSITION OF SURPLUS MATERIAL.”

9. Section 31 00 00, Earthwork: page 5, paragraph 3.2 General Excavation, 12th line, delete

“in designated waste or spoil areas.” and insert to the end of this sentence “as specified in Paragraph

3.11 DISPOSITION OF SURPLUS MATERIAL.”

10. Section 31 00 00, Earthwork: page 7, paragraph 3.5 Utilization of Excavated Material, 1st and 2nd line, delete

“into designated waste disposal or spoil areas” and insert to the end of this sentence “as specified in Paragraph 3.11 DISPOSITION OF SURPLUS MATERIAL.”

11. Section 31 00 00, Earthwork: page 7, paragraph 3.5 Utilization of Excavated Material, 9th and 10th line: delete

“in designated areas approved for surplus material storage or designated waste areas as directed” and insert to the end of this sentence “as specified in Paragraph 3.11 DISPOSITION OF SURPLUS

MATERIAL.”

12. Section 33 01 30.96: page 5 and 6, paragraph 2.6: delete

“The Contractor shall be required to provide their own water for flushing and cleaning of the Bypass Conduit.” and replace with “The Contractor is permitted to use water from Basin No. 2 for flushing and cleaning of the Bypass Conduit. Water must be removed from the north end of Basin No. 2.”

DRAWINGS:

13. Drawing C-20, Note 7: Add to the end of the note.

“THE CONTRACTOR CAN ASSUME THIS SLUICE GATE IS IN GOOD OPERATING

CONDITION.”

14. Drawing C-21, Add the following notes:

“6. NO OUTAGE WILL BE ALLOWED FOR FIELD VERIFYING STOP LOG SLOT

DIMENSIONS.

7. THE DIMENSIONS OF THE CURRENT STOP LOG SLOT ARE 8.5 LF WIDE BY 12” IN

DEPTH.

8. THE MAXIMUM HEIGHT OF THE STOP LOG SLOT IS 18 LF MEASURED FROM THE

BOTTOM OF THE CHAMBER TO THE FLOOR OF THE INFLUENT GATEHOUSE.”

15. Drawing C-24, Leader in center of page which states “NEW PERMEABLE PAVER SYSTEM, SEE

DETAIL ON C-3”: Change

“C-3” TO “C-26”.

16. Drawing C-27, Proposed Sluice Gate Detail, Note 2: Change

“35 20 16.53” TO “40 05 52”.

17. Drawing C-27, Proposed Sluice Gate Detail, Add the following notes:

“4. THE CONTRACTOR CAN ASSUME THE MEIG’S VAULT SIDE OF THE 30” SLUICE GATE

IS DRY.

5. NO OUTAGE WILL BE ALLOWED FOR FIELD VERIFYING STOP LOG SLOT OR SLUICE

GATE DIMENSIONS.

6. THE DIMENSIONS OF THE CURRENT STOP LOG SLOT ARE 5.5 LF WIDE BY 6” IN

DEPTH.

7. THE MAXIMUM HEIGHT OF THE STOP LOG SLOT IS 24 LF MEASURED FROM THE

BOTTOM OF THE CHAMBER TO THE FLOOR OF THE CASTLE GATEHOUSE.”

18. Drawing S-7, Add the following note:

“NOTE 1 – THE EXISTING STEEL CRANE SHALL BE RESTORED. THE EXISTING PAINT

AND RUST SHALL BE REMOVED AND THE SURFACES SHALL BE PREPARED AND

PAINTED. THE EXISTING ROLLERS SHALL ALSO BE RESTORED TO OPERATE

PROPERLY.”

19. Drawing A-2, Remove the following Sheet Keynote:

“6 – REMOVE EXISTING INTERIOR PAINT, CLEAN BRICK AND REPAIR BRICK, AND

REPAINT INTERIOR.” AND REPLACE WITH THE FOLLOWING SHEET KEYNOTE: “6 –

REMOVE EXISTING INTERIOR PAINT, CLEAN BRICK, REPAIR AND/OR REPLACE

APPROXIMATELY 20% OF THE DAMAGED EXISTING BRICK, REPOINT

APPROXIMATELY 40% OF THE EXISTING MORTAR JOINTS AND REPAINT THE

INTERIOR.”

20. Drawing A-2, Remove the following Sheet Keynote, “10 – REMOVE AND REPLACE CAST IRON CORNICES. ALL CAST IRON CORNICES

SHALL BE PAINTED.” AND REPLACE WITH THE FOLLOWING SHEET KEYNOTE, “10 –

REMOVE ALL CAST IRON CORNICES AND TRIM WORK. CLEAN AND RESTORE.

RECONSTRUCT APPROXIMATELY 20 LF (PLUS OR MINUS) OF DETERIORATED CAST

IRON CORNICE TRIM WORK. SURFACE PREP AND PAINT ALL SURFACES OF THE

RESTORED CAST IRON CORNICE AND TRIM WORK. REINSTALL TO PROVIDE A

WATERTIGHT ASSEMBLY.”

21. Drawing A-2, Remove the following Sheet Keynote:

“11 – REMOVE EXTERIOR STUCCO FINISH FROM ENTIRE BUILDING, REPLACE

DAMAGED BRICKS, RE-POINT BRICKS, AND PROVIDE NEW REPLACEMENT STUCCO

TO MATCH STUCCO ON THE CASTLE GATEHOUSE IN COLOR AND TEXTURE.” AND

REPLACE WITH THE FOLLOWING SHEET KEYNOTE: “11 – REMOVE EXTERIOR STUCCO

FINISH FROM THE ENTIRE BUILDING, CLEAN BRICK, REPAIR AND/OR REPLACE

APPROXIMATELY 20% OF THE DAMAGED EXISTING BRICK, REPOINT

APPROXIMATELY 40% OF THE EXISTING MORTAR JOINTS, AND PROVIDE NEW

REPLACEMENT STUCCO TO MATCH STUCCO ON THE CASTLE GATEHOUSE IN COLOR

AND TEXTURE.”

22. Drawing A-3, Detail 2/A3/A3, Remove the following note, “CAST IRON TRIM WORK, PTD. TO BE REMOVED AND REPLACED (+/- ¼” THICK)” AND

REPLACE WITH THE FOLLOWING NOTE, “CAST IRON TRIM WORK, SHALL BE

REMOVED, CLEANED, RESTORED, REPAINTED AND REINSTALLED TO PROVIDE A

WATERTIGHT ASSEMBLY”.

23. Drawing A-3, Detail 2/A3/A3, Remove the following note, “CAST IRON CORNICE, PTD. TO BE REMOVED AND REPLACED (+/- ¼” THICK)” AND

REPLACE WITH THE FOLLOWING “CAST IRON CORNICE, SHALL BE REMOVED,

CLEANED, RESTORED, REPAINTED AND REINSTALLED TO PROVIDE A WATERTIGHT

ASSEMBLY”.

24. Drawing A-4, Floor Plan: Remove Keynote “2” at the two window openings east of door 101-02 and in the northwest turret (north window and southwest window) and replace with Keynote “2A”.

25. Drawing A-4, Add the following Sheet Keynote:

“2A – THE EXISTING BRICK INFILL IN THE WINDOW OPENING SHALL REMAIN. THE

BRICK SILL AT THE BASE OF THE BRICK INFILL SHALL BE CUT-BACK TO ALIGN WITH

THE BRICK INFILL. THE EXISTING BRICK INFILL SHALL BE CLEANED, REPOINTED

AND PAINTED BLACK. A NEW WINDOW AND FRAME SHALL BE INSTALLED IN FRONT

OF THE BRICK INFILL.”

26. Drawing A-4, Add the following to Sheet Keynote

“16 – INTERIOR OF THE CASTLE GATEHOUSE – CLEAN THE INTERIOR BRICK, REPLACE

DETERIORATED BRICK AND REPOINT THE DETERIORATED MORTAR JOINTS”.

27. Drawing A-4, Add the following Sheet Note:

“5 – PROVIDE HORIZONTAL UNISTRUT TO SUPPORT THE VERTICAL CONDUIT AND

PANELS THAT ARE IN FRONT OF THE WINDOW OPENINGS. THERE ARE FOUR

WINDOWS OPENINGS THAT REQUIRE PANEL SUPPORT AND EIGHT WINDOWS THAT

REQUIRE CONDUIT SUPPORT.”

28. Drawing A-10, Remove the following Sheet Keynote:

“2 – REMOVE EXISTING PAINT THROUGHOUT INTERIOR OF VAULT, CLEAN AND

REPAIR BRICK; RE-PAINT INTERIOR.” AND REPLACE WITH THE FOLLOWING SHEET

KEYNOTE: “2 – REMOVE EXISTING PAINT THROUGHOUT INTERIOR OF VAULT, CLEAN

BRICK, REPAIR AND/OR REPLACE APPROXIMATELY 20% OF THE DAMAGED EXISTING

BRICK, REPOINT APPROXIMATELY 40% OF THE EXISTING MORTAR JOINTS AND PAINT

THE INTERIOR.”

29. Drawing A-10, Remove the following Sheet Keynote

“6 – REMOVE AND REPLACE CAST IRON CORNICES. ALL CAST IRON CORNICES SHALL

BE PAINTED.” AND REPLACE WITH THE FOLLOWING SHEET KEYNOTE “6 – REMOVE

ALL CAST IRON CORNICES AND TRIM WORK. CLEAN AND RESTORE. RECONSTRUCT

APPROXIMATELY 8 LF (PLUS OR MINUS) OF DETERIORATED CAST IRON CORNICE

TRIM WORK. SURFACE PREP AND PAINT ALL SURFACES OF THE RESTORED CAST

IRON CORNICE AND TRIM WORK. REINSTALL TO PROVIDE A WATERTIGHT

ASSEMBLY.”

30. Drawing A-11, Detail 1/A11/A11, Remove the following note, “CAST IRON TRIM WORK (+/- ¼” THICK), SHALL BE REMOVED, REPLACED AND PTD.”

AND REPLACE WITH THE FOLLOWING NOTE, “CAST IRON TRIM WORK, SHALL BE

31. Drawing A-11, Detail 1/A11/A11, Remove the following note, “CAST IRON CORNICE (+/- ¼” THICK), SHALL BE REMOVED, REPLACED AND PTD.”

AND REPLACE WITH THE FOLLOWING NOTE, “CAST IRON CORNICE, SHALL BE

32. Drawing A-11, Detail 1/A11/A11, Remove the following note, “CAST IRON PLATE ON ANGLE IRON FRAMING, SHALL BE REMOVED, REPLACED AND

PTD.” AND REPLACE WITH THE FOLLOWING NOTE, “CAST IRON PLATE ON ANGLE

IRON FRAMING, SHALL BE REMOVED, CLEANED, RESTORED, REPAINTED AND

REINSTALLED TO PROVIDE A WATERTIGHT ASSEMBLY”.

33. Drawing A-12, Remove the following Sheet Keynote:

“9 – REMOVE EXTERIOR STUCCO FINISH FROM ENTIRE BUILDING, REPLACE

DAMAGED BRICKS, RE-POINT BRICKS, AND PROVIDE NEW REPLACEMENT STUCCO

TO MATCH STUCCO ON THE CASTLE GATEHOUSE IN COLOR AND TEXTURE.” AND

REPLACE WITH THE FOLLOWING SHEET KEYNOTE: “9 – REMOVE EXTERIOR STUCCO

FINISH FROM THE ENTIRE BUILDING, CLEAN BRICK, REPAIR AND/OR REPLACE

APPROXIMATELY 20% OF THE DAMAGED EXISTING BRICK, REPOINT

APPROXIMATELY 40% OF THE EXISTING MORTAR JOINTS, AND PROVIDE NEW

REPLACEMENT STUCCO TO MATCH STUCCO ON THE CASTLE GATEHOUSE IN COLOR

AND TEXTURE.”

34. Drawing A-17, Add the following general note:

“NOTE 1 – THE WINDOWS FOR THE CASTLE GATEHOUSE AND THE WEST SHAFT

GATEHOUSE WILL BE PERIOD REPRODUCTIONS WITH TRUE-DIVIDED LITES.”

35. Drawing A-17, Change the following note on all elevations and details from: “1/4” tempered glass” to “1/4” clear tempered glass”.

36. Drawing M-1, Add the following general note:

“NOTE 15 – THE HVAC CONTROLS FOR BOTH THE INFLUENT GATEHOUSE AND THE

CASTLE GATEHOUSE ARE STAND-ALONE SYSTEMS.”

37. Drawing P-2, Add the following note to the General Sheet Notes:

“7 – THE FOLLOWING OUTLINES THE EXTENT OF PIPING THAT REQUIRES

RESTORATION;

25 LF OF EXISTING 4” SANITARY PIPING,

20 LF OF EXISTING ¾” COLD WATER PIPING AND

10 LF OF EXISTING 2” VENT PIPING.

THE FOLLOWING OUTLINES THE EXTENT OF EXISTING PIPING THAT IS BEING

REMOVED AND REPLACED;

30 LF OF 2” SANITARY TO BE NEW,

15 LF OF 4” SANITARY TO BE NEW,

60 LF OF 2” VENT PIPING TO BE NEW,

20 LF OF ¾” COLD WATER PIPING TO BE NEW,

10 LF OF ½” COLD WATER PIPING TO BE NEW.”

38. Drawing E-4, Replace Note 5 with the following:

“CONTRACTOR SHALL DEMOLISH ALL EXISTING LIGHTING SYSTEMS, INCLUDING

FIXTURES, SWITCHES, CONDUIT, AND WIRING. INSTALL NEW LIGHTING FIXTURES

AND SWITCHES AS SHOWN ON POWER PLAN AND ROUTE NEW CONDUIT AND CABLE

FROM EXISTING LIGHTING PANEL. PROVIDE ALL SUPPORTS, ACCESSORIES, AND

INCIDENTALS AS REQUIRED. UPDATE PANEL SCHEDULE UPON COMPLETION.”

GENERAL:

39. Questions and Answers: Attached to the end of this amendment are Questions and Answers dated Dec 8, 2016, are provided for information only

40. Attached Pre-Proposal Meeting: Attached for information only is the sign in sheet for the Pre-

Proposal Site Visit dated NOV. 22, 2016.

ATTACHMENTS:

Revised Price Schedule dated Dec. 8, 2016 Questions and Answers dated Dec 8, 2016 Pre-Proposal Site Visit sign in sheet dated NOV. 22, 2016.

The following have been deleted:

UPDATED SPECS & DRAWINGS

SECTION 00010 - SOLICITATION CONTRACT FORM

The following have been modified:

PRICE SCHEDULE

PRICE SCHEDULE – REVISED: DEC. 8, 2016

Item No.

Description Amount

Base Bid Items

0001 All costs in connection with work on the Influent Gatehouse, complete as shown on the drawings and specified. $ _________

0002 All costs in connection with the work on the Castle Gatehouse, including but not limited to the site work at the paved entrance, parking area and sluice gate replacement complete as shown on the drawings and specified. $ _________

0003 All costs in connection with work on Meigs Vault, complete as shown on the drawings and specified. $ _________

0004 All costs in connection with work on the West Shaft Gatehouse, including but not limited to the sidewalk replacement and site grading complete as shown on the drawings and specified. $ _________

0005 All costs in connection with work on the Circular Platform next to Meigs Vault, complete as shown on the drawings and specified. $ _________

Total Base Bid Amount $ _________

Item No.

Description Amount

Optional Bid Items

0006 All costs in connection with the removal and replacement of the

Georgetown Reservoir and West Shaft Gatehouse perimeter fences, 0007 All costs in connection with By-Conduit Debris Removal, 0008 All costs in connection with the construction of the Georgetown

Reservoir Road, complete as shown on the drawings and specified. $ _________

0009 All costs in connection with the construction of the Dalecarlia

Reservoir Road, complete as shown on the drawings and specified. $ _________

Total Base and Optional Bid Amount $ _________

NOTES TO OFFERORS

Offerors must quote on all items including Optional Items. Failure to quote on all items may be cause for rejection of the proposal.

Optional Items may be exercised at any time within 90 calendar days after contract award. The Contracting Officer may exercise the Optional Items by written notice to the Contractor, postmarked within the period specified above. The Government may exercise any, all or none of the listed Optional Items in any order.

Exception for Optional Item 0007 Should this option be exercised, the performance period will be extended to 15 February 2018 to allow work to proceed within the seasonal window.

EVALUATION OF OPTIONS:

Except when it is determined not to be in the Government’s best interests, the Government will evaluate offers for award purposes by adding the total price for all options to the total price for the basic requirement. Evaluation of options will not obligate the Government to exercise the option(s).

SECTION 00100 - BIDDING SCHEDULE/INSTRUCTIONS TO BIDDERS

The following have been modified:

RFI QUESTIONS & RESPONSES

Offerors’ Requests for Information and Government Responses

FOR INFORMATION ONLY

Q1) Spec 31 00 00 paragraph 3.5: When excavating the existing gravel roads around the reservoirs, will the Contractor be responsible for disposal of these materials off site? The cited paragraph appears to state that materials will be disposed in designated areas which could mean somewhere on Corps property.

A1) The contractor will be responsible for disposal of surplus material off Government property to an approved location per Section 31 00 00, paragraph 3.11. Conflicting language will be removed by addendum.

Q2) On Optional Item 0007: Addendum 1 revised the Contract duration to 220 days. Therefore, given the time to bid, award, 90 days to award the option, this work will be outside the seasonal window and therefore beyond Contract completion dates. Please provide clarification so we can bid this option.

A2) Option 0007 will be modified by this AM_0004 to account for the seasonal window.

Q3) Specification Section 01 32 01.00 10 references lead paint abatement however I could not find a lead paint testing report or the locations/quantities of the lead paint. Could this be clarified?

A3) The two references to lead paint will be deleted by addendum.

Q4) Is testing and Inspection part of the scope of work?

A4) Yes, as required in Section 01 45 00.00 10, paragraph 3.7, and as required by other technical specifications.

Q5) Is this project tax-exempt?

A5) The project is not tax-exempt project.

Q6) Section 01 35 26 and 01 45 00.00 require that the SSHO (Site Safety and Health Officer) and QC (Quality Control) persons to be at the work site at all times. Can the SSHO and/or QC have a dual-role, such as part of the Site Superintendent?

A6) Section 01 35 26, paragraph 1.5.5.5.1 only states that the Quality Control Person cannot be the SSHO. The documents are silent on the SSHO and/or the QC person having other roles on the project.

Due to the size of this project a single person can have dual roles as long as they are qualified and the QC and SSHO person are not the same.

Q7) Does the government require a field office?

A7) A Government Field Office is not required. Section 01 50 00, paragraph 3.6 will be deleted by addendum.

Q8) The price schedule on section 00010 – Solicitation Contract Form requests the price item #1 to #9.

These price items are not clearly identified on the drawings. It’s difficult to know where are the starting and stopping points to the above mentioned price options.

a. Are all the erosion and sediment controls, site demolition, and site work shown on drawing C22 to C25 part of the Castle House (price item #0002), Influent Gatehouse (price item #0001), or Georgetown Road (price item #0008)?

b. Are all the site work shown on drawing C24 within the dotted line are part of the Influent

Gatehouse (price item #0001)? There are some works shown outside the dotted line. Where do we put those costs?

c. Are all the removal and replacement of fences part of the price item #0006? Some fences are shown on drawing C24 which are part of the Castle House (price item #0002) and Influent Gatehouse (price item #0001).

d. Are all the works shown on drawing C20 meant for the price item #0007 for the By-Conduit

Debris Removal?

e. All electrical drawings do not identify these price items?

f. C27 shows replacement of sluice gate. Is this part of price item #2?

g. The above examples are just a few items. Please provide appropriate drawings to identify these price items.

A8) Below are the responses to Question 8

a. The erosion and sediment controls, demolition, and site work for the paved entrance from MacArthur Boulevard and the parking area outside the Castle Gatehouse are included in Price Item #0002. The erosion and sediment controls and site work for the gravel roadway are included in Price Item #0008. The erosion and sediment controls, demolition, and site work for the fencing and access gate are included in Price Item #0006. The price schedule will be revised by addendum.

b. See response to Question 8a for clarification of work shown on C-24. The building shown on C-

24 is the Castle Gatehouse, not the Influent Gatehouse.

c. The removal and replacement of all fences are included in Price Item #0006. The price schedule will be revised by addendum.

d. Yes, the works shown on C-20 are included in Price Item #0007. The price schedule will be revised by addendum.

e. As noted in the Price Schedule, provide all costs in connection to a specific area as noted in Items 1 through 5. For example; all electrical work associated with the Influent Gatehouse should be included in Price Item #0001.

f. Yes, the replacement of the 30" sluice gate in included in Price Item #0002. The price schedule will be revised by addendum to clarify.

g. The price schedule will be revised by addendum to clarify.

Q9) Please provide the following missing specification sections:

a. Note #2 on drawing C27 refers to section 35 20 16.53, but this section is not part of the given specification.

b. Unit pavers as shown on drawing C24

A9) Below are the responses to Question 9

a. The drawing references an incorrect specification. It should reference Section 40 05 52. This will be modified by Addendum.

b. See Section 32 16 15 CONCRETE BLOCK PAVEMENTS. The reference on C-24 to the permeable paver system detail on C-3 will be corrected by addendum.

Q10) Drawing S7 call for the existing steel crane to be removed and restored. Please provide clarify the extent of the restoration scope (i.e., remove rust, repaint, and etc.).

A10) The existing paint and rust shall be removed and the surfaces shall be prepared for painting. The existing rollers shall also be restored to operate properly. Drawing S-7 will be modified by addendum.

Q11) Drawing P2, note #4 requests that all exposed storm, sanitary waste and vent pipes shall be stripped of existing paint and rust, and repaint, and repair/replace necessary deficient components as need. Due to the bid time parameter, it will be difficult to investigate and survey the amount of pipes to be restored, repaired, and/or replaced. Please provide the appropriate drawings that show these pipes and/or allowable quantities for the above pipes be restored, repaired, and/or replaced.

A11) Drawing P-2 will be modified by addendum.

Q12) Please clarify the following:

a. Can we use the existing pumps to pump water from Basin #1 to Basin #2?

b. Can we use existing water from the Basins for bypass conduit cleaning?

A12) Below are the responses to Question 12

a. No. As stated in Section 33 01 30.96, the Contractor shall design and supply the necessary pumps, conduits, and other equipment to dewater Basin No. 1 and remove the solids.

b. Yes, specification 33 01 30.96 will be modified by addendum to address this item.

Q13) Are the new windows to be period reproductions or Marvin windows be acceptable?

A13) The windows should be period reproductions. Reference the window details on drawing A-17.

Drawing A-17 is being modified by addendum.

Q14) Drawing A2, note #6 requests to remove existing interior paint, clean brick and repair brick. Please provide quantity of damaged brick to be replaced.

A14) The extent of the brick to be repaired can't be determined until the existing paint is removed.

Drawing A-2 will be modified by addendum to define quantities of repair/replacement of brick and quantity of estimated repointing.

Q15) Drawing A2, note #10 calls that all cornice be replaced, please confirm.

A15) The cornice work at both the Influent Gatehouse and Meigs Vault is going to be removed and restored in lieu of replacement. Drawing A-2, A-3, A-10 and A-11 will be modified by addendum.

Q16) Drawing A2, note #11 requests to repoint damaged brick, please provide quantity or percentage for repointing.

A16) Note 11 will be modified. An addendum will be provided.

Q17) Are the new HVAC controls to be stand-alone systems or do they need to integrate to existing building control system? If so, who is the manufacturer of the existing control system?

A17) The controls for this system are stand-alone. The manufacturer of the existing control system is not known. Drawing M-1 will be modified by addendum.

Q18) Section 23 09 23, para 3.1 requests for an existing condition survey of the mechanical equipment/control. Please confirm that is correct.

A18) The new HVAC equipment is not tying into any existing HVAC equipment. Therefore, the existing condition survey is not required and will be removed from the specification by addendum.

Q19) Note #5 on drawing E4, “For clarity not all existing light fixtures, switches and incidental are show.

Contractor shall field verify demolish all existing light system including fixtures, switches, conduits, cable and wiring…” Due to the bid time parameter, it will be difficult to investigate and survey all of missing electrical components are not shown. Please provide the appropriate drawings that show these existing electrical components.

A19) Note 5 on drawing E-4 will be modified by addendum to remove the field verification requirement.

Q20) Drawing C20, Bypass Conduit Cleaning Plan shows in lower left corner on existing 84” Sluice Gate and on a diagonal entrance to the 84” Bypass Conduit. Can the contractor assume this sluice gate is in good operating condition, and will seal the water from entering the 84” Bypass Conduit in order to clean the Bypass Conduit?

A20) The Contractor can assume the 84” sluice gate is in good operating condition. As stated in Note 7 on C-20, debris and sediment will be removed through this sluice gate. As is stated in specification Section 33 01 30.96, paragraph 3.1, the Contractor shall assume that there will be leakage from the existing sluice gates.

Q21) Note #3 on drawing C20 states, “All work shall take place between November 15 and March 15.”

Since the Bid Date is early December 2016, and award Dec/Jan, will this conduit cleaning work be performed January to March 2017, or next season, November 2017 to March 2018?

A21) See response to question #2.

Q22) Drawing C20 – Is silent concerning contractor furnishing and installing temporary stop log in the Influent Gatehouse to seal the 84” Bypass Conduit, as was mentioned at the Pre-Bid Site visit of November 22, 2016? Please clarify.

A22) Contractor should refer to sheet C-21 which is being revised by addendum in response to question 23.

Q23) Note #1 on drawing C21 – States “Contractor to field verify dimensions of existing stop log slots and provide stop logs to isolate influent gatehouse from existing 84” bypass conduit”. Does this refer to the existing timber stop logs, which the contractor is not allowed to use, inside the castle gatehouse, that are piled up at the concrete walkway level, to the one side of the existing 84” sluice gate and stop log slots? Will contractor be given a short outage and when to conduct this underwater field verification of dimensions, and can this outage be conducted to do the same for new 30” sluice gate of drawing C-27?

A23) Note 1 on C-21 refers to the stop log slot in the Influent Gatehouse, not the Castle Gatehouse. Based upon Note 1 on C-21, the Contractor is not permitted to use existing timber stop logs. No outage will be allowed. The dimensions of the current stop log slot are 8.5-ft wide by 12-inches in depth. The maximum height of the stop log slot is 18-ft measured from the bottom of the chamber to the floor of the Influent Gatehouse. Sheet C-21 will be revised by addendum.

Q24) Note #2 on drawing C21 states, “Contractor shall use existing sluice gate to isolate 84” Bypass Conduit at Castle Gatehouse”. Can contractor assume this sluice gate is in good operating condition, and will seal the water for the bypass cleaning, and minimum leakage to the new wooden contractor provided stop logs?

A24) The Contractor cannot assume the sluice gate in the Castle Gatehouse or the Contractor-provided stop logs in the Influent Gatehouse will completely prevent water from entering the Bypass Conduit during cleaning, or prevent cleaning water from entering the Influent Gatehouse or Castle Gatehouse. As stated in Section 33 01 30.96, the Contractor is responsible for preventing any leakage from the stop logs and sluice gate into the bypass conduit. The Contractor should assume they will have to fortify the existing sluice gate in the Castle Gatehouse to prevent leakage.

Q25) Note 1 and 2 on drawing C21 seem to provide the same isolating water method, using both stop logs and sluice gate. Is this for redundant method, or for some other reasons? Please clarify.

A25) The Influent Gatehouse is to be isolated using Contractor-provided stop logs inserted into the existing stop log slot. The Castle Gatehouse is to be isolated using the existing closed sluice gate. The contract is silent on the use of stop logs at the Castle Gatehouse for isolating the Bypass Conduit.

Q26) Drawing C27 - Castle Gatehouse –Blow off Gate Demolition, Plan and Detail. Please specify Contract Specification Section applicable for “repairing 1sq ft. of existing concrete floor where existing support beam is removed.

A26) Refer to Section 03 30 53 MISCELLANEOUS CAST-IN-PLACE CONCRETE.

Q27) Drawing C27 - Please specify Contract Specification Section applicable for Electric Actuator with Manual Override for new 30” sluice gate.

A27) Refer to Section 40 05 52 SLUICE GATES AND APPURTENANCES.

Q28) Drawing C27 states, “Contractor is to provide temporary stop logs on gatehouse side of 30” sluice gate, but it’s silent on condition of other side.” Thus, can contractor assume condition is dry on 30” blow off to MEIG’s vault side of replacement 30” sluice gate? Is there any as-built drawing for the 30” sluice gate or what’s the make/model?

A28) The Contractor can assume the Meigs Vault side of the 30" sluice gate is dry. Sheet C-27 will be modified by addendum to address this item. All available information for the existing 30" sluice gate is included in the contract documents.

Q29) Drawing C27 - Will contractor be given a short outage, and when, in order to conduct underwater inspection of stop log frame and existing 30” wall mounted sluice gate? Also, can outage be coordinated to inspect, at the same time, the stop log frame of 84” bypass conduit stop log of drawing C-21?

A29) An outage will not be allowed. The Contractor may use stop logs to isolate and field verify the dimensions of the wall mounted sluice gate. The dimensions of the stop log slot are 5.5 LF wide by 6” in depth. The maximum height of the stop log slot is 24 LF measured from the bottom of the chamber to the floor of the Castle Gatehouse. Sheet C-27 will be modified by addendum to address this item.

Q30) Were any historic preservation specialists consulted during the drafting of the scope of work?

A30) Yes, Historic Preservation specialists including the DC HPO were consulted during the design.

Q31) Do you realize the current concrete parging reveals multiple layers of various materials applied to the exterior on multiple occasions?

A31) Assuming this comment is referring to the Castle Gatehouse, yes, the design team is aware that the Castle Gatehouse is finished with multiple layers and that they occurred at different points in time.

Q32) Do you realize using a type S cement on the cracks will irreparably damage the brick masonry structure?

A32) The reference to Type S mortar will be removed from specification section 04 01 00.91, 3.1.1.

Q33) Do you realize that grinding off the surface layer of the Portland cement will cause all of the parging layer to come off including the brick faces?

A33) The means and methods of removal of the finish coat is not noted in the contract documents and is the responsibility of the contractor.

Q34) Will the masonry contractor be able to conduct test areas using historically appropriate layers to match what is existing using a petrographic analysis?

A34) The use of petrographic analysis is acceptable. Reference specification section 04 01 00.91, 3.1.3.1.

Q35) Is the Army Corp of Engineers prepared to change the scope of work according to tests conducted by masonry contractor?

A35) Reference Note 5 on drawings A-5, A-6, A-7, A-8 and A-9.

Q36) Can the masonry contractor layer multiple types of mortar to historically match the composition of the existing?

A36) If this question is about repointing the brick, the repointing mortar is required to match the existing mortar.

Q37) Will the masonry contractor be able to tuck-point areas in the interior of all structures on site in order to ensure the structural stability and longevity of the buildings?

A37) The contract drawings include repairing the brick or repointing the brick on the interior of the Influent Gatehouse, Meigs Vault and the Westshaft Gatehouse. The Castle Gatehouse drawing (A-4) will be modified to include repointing the brick on the interior.

Q38) This fixture schedule (drawing E2) does not have manufacturers listed. Do you have one that does?

Or any more info?

A38) The Fixture Schedule on drawing E-6 provides a description of each light fixture. The contractor should provide light fixtures that are equal the description provided in the Fixture Schedule on drawing E- 6.

Q39) Castle Gatehouse Windows

A39) Drawings A-4 will be modified by addendum to provide additional information regarding window replacement

(End of Summary of Changes)