Amendment_Four_140P2019R0022.pdf

(x)

140P2019R0022 x x

1 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 ACKNOWLEDGEMENT 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.

x

PDS

Denver CO 80225-0287 P.O. Box 25287 12795 W. Alameda Pkwy NPS, DSC Contracting Services Div

GLAC 24634904/16/20190004

13. THIS ITEM ONLY APPLIES TO MODIFICATION OF CONTRACTS/ORDERS. IT MODIFIES THE CONTRACT/ORDER NO. AS DESCRIBED IN ITEM 14.

12. ACCOUNTING AND APPROPRIATION DATA (If required) is not extended.is extended, Items 8 and 15, and returning

Offers 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

The above numbered solicitation is amended as set forth in Item 14. The hour and date specified for receipt of Offers

11. THIS ITEM ONLY APPLIES TO AMENDMENTS OF SOLICITATIONS

FACILITY CODE CODE

10B. DATED (SEE ITEM 13)

10A. MODIFICATION OF CONTRACT/ORDER NO.

9B. DATED (SEE ITEM 11)

9A. AMENDMENT OF SOLICITATION NO.

CODE

8. NAME AND ADDRESS OF CONTRACTOR (No., street, county, State and ZIP Code)

7. ADMINISTERED BY (If other than Item 6)CODE 6. ISSUED BY

PAGE OF PAGES

4. REQUISITION/PURCHASE REQ. NO.3. EFFECTIVE DATE2. AMENDMENT/MODIFICATION NO. 5. PROJECT NO. (If applicable)

1. CONTRACT ID CODE

AMENDMENT OF SOLICITATION/MODIFICATION OF CONTRACT

03/20/2019

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

B. THE ABOVE NUMBERED CONTRACT/ORDER IS MODIFIED TO REFLECT THE ADMINISTRATIVE CHANGES (such as changes in paying office, C. THIS SUPPLEMENTAL AGREEMENT IS ENTERED INTO PURSUANT TO AUTHORITY OF:

D. OTHER (Specify type of modification and authority) appropriation date, etc.) SET FORTH IN ITEM 14, PURSUANT TO THE AUTHORITY OF FAR 43.103(b).

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

ORDER NO. IN ITEM 10A.

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

GLAC 246349 - Sperry Chalet Restoration Phase 2

Amendment Four in accordance with the attached. Proposal due date has been extended.

Legacy Doc #: NPS

Period of Performance: 07/01/2019 to 10/01/2019

Contracting Officer: Sharon Miner, 303-969-2562

Contract Specialist: Kevin Ralston, 303-969-2709

Project Manager: Daniel Lawson, 303-969-2577

16A. NAME AND TITLE OF CONTRACTING OFFICER (Type or print)15A. NAME AND TITLE OF SIGNER (Type or print)

15C. DATE SIGNED 16B. UNITED STATES OF AMERICA 15B. CONTRACTOR/OFFEROR 16C. DATE SIGNED

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

Sharon Miner

STANDARD FORM 30 (REV. 10-83)

Prescribed by GSA

FAR (48 CFR) 53.243

NSN 7540-01-152-8070

Previous edition unusable

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

Amendment Four 140P2019R0022

The purpose of this Amendment is extend the proposal due date and answer additional questions received.

1. The proposal due date has been extended to Monday, April 22, 2019 at 12:00 Noon Mountain Time.

2. The following additional questions have been received and answered.

Q9: Please clarify the below statement from Section 28 31 11 – Fire Alarm System Document included with the pre bid package (paragraph C. General Submittal Requirements):

a. Does this mean that the installing company that provides and installs the Fire Alarm Devices must be Nicet 3 minimum?

A9a: The contractor that provides and installs the fire alarm devices is not required to be NICET III certified.

b: Will the AHJ sign off on the design as currently proposed?

A9b: The design has been reviewed and approved by the AHJ.

c: Is Factory training by the manufacture of the SD/CO/H-S detectors required?

A9c: Factory training is not required for the fire alarm devices; the on-site contractor can provide the required training.

d: Can workers stay overnight at the project location?

A9d: Per Spec Section 01110031.4E: Establishment of a camp within the park will be permitted. Refer to Project Constraints information included at the end of this section. As possible within existing constraints of the site, the camp shall meet OSHA 29CFR1910.142.

Q10: Specification Section 04 01 40.91.3.6.E - Repoint Joints – “Repoint Ground-out joint…” Will the Government allow an alternative method of mortar removal? If so, would low impact, hand held air chisels be allowed? (this process allows for less destruction to surrounding historical stones and also creates less dust that would have to be contained per the OSHA Silica Standard). If air chisels are not allowed, then one is to assume that grinding and hand chiseling are the only acceptable methods allowed, correct?

A10: Mortar may be removed using air chisels pending successful demonstration that the method will not damage adjacent stone or concrete. Mortar removal methods shall be demonstrated at a mockup on the wall at least 4'-0" by 4'-0" in size. Chipping, overcuts greater than 1/8", or other damage to adjacent materials is not acceptable. Follow mock up requirements outlined in 040140.91 Section 1.2B.

Q11: Specification Section 04 05 13 2.1.F – Water – Clean, Potable and free from salts and alkalis. Has the water available on site been tested to pass the above criteria?

A11: Refer to Specification 011100 - Project Constraints re: use of water on site. Pond water, which may be used for construction, has not been tested.

Q12: Structural Sheet S0.4, Note 9, under “Structural Erection And Bracing Requirements”: When will the interior temporary stud walls be removed? Will they be removed prior to all interior masonry work? Should the Masonry Contractor assume working around the in-place stud walls for Pinning, Descaling, Dutchmen, Stone Face repair and patching? Please list “Other Supporting Elements” that are in place right now?

A12: Coordinate with the prime contractor based on most efficient approach. Stud walls are currently supporting the rafters since the tops of the masonry walls are partially removed/damaged. In general terms, the rafters can be shored further inboard of the perimeter walls to allow removal of stud wall sections and to allow interior access to the tops of the masonry walls. Or the tops of the masonry walls can be repaired from the exterior allowing the stud walls to remain in place until the masonry walls are re-supporting the rafters. Also, since the stud walls are not sheathed, some of the masonry work can be accomplished from the interior with the stud walls in place.

Pinning can likely be accomplished while working around the stud walls.

The interior descaling, dutchmen, face repair is likely most efficient accomplished with the stud walls removed. These steps can either wait until the top of the masonry wall is repaired and stud walls removed or be done concurrently with the top of wall repair after the rafters have been individually shored, (see item 11b above). “Other supporting elements” that may interfere with masonry walls repairs are the continuous horizontal double 2x8 whalers at the top and bottom of wall and some miscellaneous 8x8 diagonal timber shoring remaining from the post-fire emergency bracing.

Q13: Can the Helicopter be used for installing a full length, pre-tied, rebar cage in each chimney prior to grouting?

A13: This approach is structurally acceptable.

Q14: Please specify exactly how much clearance there will be between interior face of the finished stone and the remaining tongue and groove roofing that remains while Mason is removing and replacing the top portions of the stone walls?

A14: Currently there is an approximately 2-foot wide gap between the inside face of perimeter masonry walls and the edge of the T&G decking

Q15: Plan Sheet C2.0 Notes #3 Flagstone install if Necessary at edge of Deck.

Please provide estimated quantity of stone to be installed?

A15: 25 sq ft of flagstone

Q16: Plan Sheet A4.0m - A4.3m/Stone repair general Notes/#3 “Remove all Miscellaneous Hardware from Existing Stone and Patch and Repair, where existing stone has been damaged:” Are these included in the masonry repair treatment legend on elevation pages? If not included, please provide a quantity for this work?

A16: These are not shown on the masonry repair sheets. Anticipate 21 bolt-size penetrations of stone. Generally, these penetrations occur at former balcony post attachments; the removal of the charred remains of the posts is in the general scope of work. See arrow at left in image below for typical reference.

Q17: Plan sheet A4.0m-A4.3m - Stone repair general Notes/#5 stipulates “Remove all stone Detritus/Debris from perimeter of Building (on grade):” What does this entail?

Please provide Quantities? What is to be done with this material?

A17: At the close of Phase 1, stone debris had collected at the perimeter of most of the structure. Anticipate 1080 cu ft of debris (6ft x perimeter x 8 inches), see arrow at right below. Stone material that is free of mortar and/or concrete may be returned to the nearby quarry in a location directed by the Contracting Officer.

Q18: Per A4.0m-A4.3m - Stone repair general Notes/#8/C “Interior 2nd Floor: All Stone requires descaling. If depth of Descaling exceeds 2” provide full stone face Dutchman and if less than 2” depth remains after descaling, remove stone in its entirety and replace.” How does Masonry Contractor determine and figure how much and what kind of work will need to be completed in order to bid this?. How does Masonry contractor know which or how much to bid of either stone face Dutchmen or complete replacement of stone in order to bid?

A18: Any additional stone Dutchman repair and stone replacement work after descaling will be incorporated by modification and are based on unit price per the Contract Price Schedule.

Q19: Plan Sheet A4.0m - A4.3m - Stone repair general Notes #9 “After stone descaling is complete, underlying conditions of remaining stone shall be reassessed by the Contracting Officer.” How does Contractor figure a quantity to bid for this work? Please clarify, what this entails and would happen next? What should the Masonry Contractor figure doing with stone debris generated from descaling?

A19: This note relates to the work referenced in the question above. After descaling, the remaining stone depth is to be assessed and further Dutchman or stone replacement repairs may be assigned and performed at that time through contract modification.

Q20: Plan Sheet Detail 5 on S5.11 shows “repoint and repair (E) stone pier FTG.”

Repair meaning what, Dutchman, descaling, replacement? If so, please provide quantities or percentages of each?

A20: Stone piers do not require dutchman or descaling since fire damage is primarily limited to the interior. Some stone units are loose and need to be reset, assume 2 stones per pier.

Q21: Plan Sheet Detail 4 on S5.31 shows “Descale (E) Chimney, Replace stones as Req. for min. dim. shown.” Please provide a quantity for figuring full replacement?

A21: Assume 50% of the chimney stone units require replacement.

Q22. Section 01 81 13.13-1.3-B2 mentions submittal of chain of custody certificates for each certified wood product. The only related section that we noticed calling for certified wood products is 06 10 00, rough carpentry. Will the wood products specified in sections 06 20 00, 07 31 29, 08 14 33, 08 52 00 and/or 09 64 00 be required to be certified as sustainably harvested?

A22: FSC certification for these items is not required but accepted where possible to source.

Q23. Section 06 20 00-2.3A calls for all wood to be Class B treated. Is it the designer’s intent that all interior wood be fire treated? The wood flooring is not specified as fire treated, is that the intent?

A23: Wood finishes are not required to be treated. Class B refers to the flame spread index class as tested per ASTM E84; Class B requires a maximum flame spread index of 75. Some Douglas Fir products can exceed this amount, so product selection is important. This requirement only applies to the wall planking and not to wood flooring or trim (reference IBC 2018 Chapter 8).

Q24. What wood species is to be used for the 2x6” decking for the main level deck and upper level balconies? Is this material to have a S4S finish or be rough sawn?

A24: Please provide Douglas Fir-Larch, S4S.

Q25. It’s our understanding that the self-adhered underlayment on the roof deck now was attached with heavy staples and torched to get it to adhere last fall. If this is the case, one would expect removal of the underlayment will delaminate a lot of the roof sheathing. Is there any way to leave the (E) underlayment in place and put a new underlayment over it?

A25: Yes, this is acceptable.

Q26. Section 08 52 00-1.2A references to UL standards for fire testing of Wood Windows. Is it the designer’s intent that these windows be fire rated? We don’t know of any manufacturer that produces a UL labeled solid wood window.

A26: The windows are not required to be fire rated.

Q27: Does the chalet have lightning protection previously and if so is any of the ground ring system remaining around the base of the lodge?

A27. Yes, the structure did have a lightning protection system previously, however, it is not the intent to attempt to tie into any existing components. All components for the lightning protection system will be new. Refer to answer to the next question regarding revised ground ring requirements.

Q28: Have any geo studies been done around the base of the chalet to determine which type of lightning protection ground ring will be needed?

A28: Upon further coordination with existing soil/bedrock conditions, it has been determined that the ground ring requirement will be changed after contract award. For the purposes of this solicitation, price the requirement per existing specifications and drawings.

3. All other terms and conditions remain unchanged.