Amendment_0004_EPA.pdf

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 items 8 and 15, and returning 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 your 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.

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

AMENDMENT OF SOLICITATION/MODIFICATION OF CONTRACT 1. CONTRACT ID CODE

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

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

STANDARD FORM 30 (REV. 10-83)

Prescribed by GSA FAR (48 CFR) 53.243

FACILITY CODE

9A. AMENDMENT OF SOLICITATION

NO.

9B. DATED (SEE ITEM 11)

10A. MODIFICATION OF CONTRACT/ORDER NO.

10B. DATED (SEE ITEM 13)

11. THIS ITEM ONLY APPLIES TO AMENDMENTS OF SOLICITATIONS

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

12. ACCOUNTING AND APPROPRIATION DATA (If required) copies of the amendment; (b) By acknowledging receipt of this amendment on each copy of the offer submitted;

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

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

CHECK ONE 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)

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.

15C. DATE SIGNED

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

16C. DATE SIGNED

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

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

PAGE OF PAGES

6. ISSUED BY CODE

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

CODE

15B. CONTRACTOR/OFFEROR

(Signature of person authorized to sign)

16B. UNITED STATES OF AMERICA

(Signature of Contracting Officer)

NSN 7540-01-152-8070

Previous edition unusable

SOLICITATION GS-08P-16-JB-C-7031 ALL QUESTION & ANSWERS October 13, 2016

1) Currently the GSA is asking for each Offeror reference to complete the Attachment 4 and send directly to the Government. We are requesting that the GSA reconsiders and allows the Offeror to use Past Performance Questionnaires that we already have on file and that the PPQs can be submitted in the books versus being sent directly to the Government.

ANSWER: Questionaires must be submitted in order for an offer to be considered responsive.

You may reference a CPARS evaluation on the forms or provide a copy if you choose to do so.

2) The Phasing Schedule references areas labeled Blocks "B" thru "I", but these areas don't seem to be identified elsewhere in the documents. Can a drawing and/or narrative be provided that identifies the limits of these Blocks?

ANSWER: The “blocks” referred to in the Phasing Schedule generically correspond with the mechanical zones in the building. Referencing mechanical sheet, M101.1, the following schedule applies:

Block B = RHU-2402 Block C = AHU 1201 Block D =RHU-1301 Block E = RHU-1303 Block F = RHU-1302 Block G = RHU-1304 Block H = RHU-1305 Block I = AHU-1101 Block J = Level 2

Specific rooms associated with each phase are identified below:

Phase 1a / 1b Areas Area 1A: ST-02, 1A-010, 1A-020, 1A-030, 1A-040, 1A-060, 1A-070, 1A-075, 1A-135, 1A-145, 1A-225, 1A-226, 1A-325, 1A-410, 1A-420, 1B-035, and C1A5 Area 1B between grids 28 and 30: 1A-355, 1A-420, 1A-340, 1A-360, ST-01 Area 1C: 1B-165, 1B-170, 1B-175, 1B-215, 1B-225, 1B-245, 1B-265, 1B-275, C1B5 Area 2 (level 2): 2B-135, 2B-125, C2B1, 2C-120, 2C-110, C2B0, 2B-505, ST-02, and ST-01

Phase 2 Areas Area 1B Labs along C1C3 corridor: 1C-225, 1C-245 Area 1D Labs between grids L and O: 1C-610, 1C-630, 1D-520, 1D-540, 1D-550, 1C-130, C1D5, 1C- 115, 1C-120, 1C-090, 1C-085, 1C-045, 1C-060, C1C0, 1C-025, 1C-005, 1C-210, 1C-305, , 1C-540A, 1C- 540B, 1F-185, C1C0, C1C2, C1C3, C1D5, C1F1 and associated gas closets as needed

Phase 3 Areas Area 1D Labs from gridline O to the east: 1C-150, 1C-160, 1C-170, 1C-180, 1C-320, 1C-325, 1C- 325A, 1C-340A, 1C-340B, 1C-360, 1C-365, 1C-405, 1C-420, 1C-425, 1C-425B, 1C-520, C1C1, C1C4, C1C5, VE-06, and associated gas closets as needed

Phase 4 Areas Area 1A Labs Final Renovation: 1A-220, 1A-110, 1A-235, 1A-250, 1A-245, 1A-260, 1A-255, 1A-225A, 1A-270, 1A-265, C1A2 and associated gas closets as needed Area 1B: 1A-375

3) These spec sections reference several alternates and unit prices which do not appear on the Pricing Schedule included with the SF1442. Will a revised Pricing Schedule be issued to include these items?

ANSWER: In reference to spec seciton 012200 and 012300, Please provide alternate unit prices for the control system on a supplemental pricing sheet.

4) Section 1.6, Quality Assurance - Please confirm if costs for the Certified Asbestos Building Inspector are to be paid for by the Contractor or are covered by the Owner.

ANSWER: The costs for the CABI are to be paid for by the Contractor.

5) Will Earthwork or SWPPP specifications be issued for this project?

ANSWER: See posted: Storm Water

6) Section V.2, Proposal Requirements - Item 2 references submission of a Detailed Price Proposal in Uniformat, Level 4. Please confirm if this is required in addition to the SF 1442 Pricing Schedule. If required, we respectfully request that Offerer's be allowed to submit the detailed breakdown within 24 hours following the proposal submission date.

ANSWER: Both the SF1442 and a detailed price breakout using the Uniformat is required. No additional days will be added for the detailed breakdown. All must be submitted for consideration.

7) General Note #3 states "Contractor will deconstruct and salvage valuable building components (e.g. windows and sills, facades, doors)". Please provide a specific list of items required to be salvaged and turned over to the Owner.

ANSWER: EPA has requested that the contractor salvage all items, which should all go to EPA (Karon Johncox and Tim Essman). EPA will then determine the disposition of each item and work with GSA wherever possible for the items to be repurposed or excessed.

The O&M has requested that the controls for the hoods that are being replaced and any VAV boxes for air supply that are not being used in the renovation be salvaged and returned to the O&M.

8) Section 23.33.19 for Sounds Attenuators, by Vibro-Accoustics. Can we use Pottorff instead of manufacturers specified in the Project Specifications?

ANSWER: No.

9) Setion 23.34.16 for HVAC Fans - Inline, by Greenheck. Can we use Twin City DSI instead of manufactureres specified in the Project Specifications?

ANSWER: Yes.

10) Setion 23.81.01-2.01 Ceiling Heater, by Qmark. Can we use Markel instead of manufactureres specified in the Project Specifications?

11) Setion 23.81.01-2.02 Cabinet Unit Heater by Zehnder Rittling. Can we use Modine instead of

12) Setion 23.81.01-203 Duct Heater by Greenheck. Can we use Neptronic instead of

13) Setion 23.82.16 for Air Coils by Trane. Can we use Titus instead of manufactureres specified in the Project Specifications?

14) Air Curtain by Mars. Can we use Berner instead of manufactureres specified in the Project Specifications?

15) Please provide designation of lighting fixtures on sheet E331, Lab 1C630. Currently the indirect fixtures are identified as LED. Should they be Type FP?

ANSWER: Yes. Light Fixtures should be Type FP.

16) Will Xrays/scans be required for second floor penetrations?

ANSWER: X-ray is not required. Structural will provide penetration support detail post-bid.

17) In reviewing the contract documents we were unable to find the Davis Bacon Wage Decision. The

Agreement references Wage Determinations CO160012 Dated 06/03/2016 and CO160033 Dated 08/05/2016. Can the GSA please provide these wage decision?

ANSWER: Yes. Published on FBO.gov.

18) Sheets PLF-301 thru PLF-307 has tables that identify the equipment that needs to be relocated.

On these tables it states who Furnishes/Installs this equipment. A majority of the Furn/Install is NEIC, OFOI, or R8. Please clarify if the contractor is to relocate all of the equipment or if the NEIC, OFOI, or R8 will install this equipment.

ANSWER: All equipment shown in phasing plans PLF301-PLF307 is existing equipment to be relocated or stored by contractor during construction.

19) If the Contractor is to relocate this equipment, please confirm that room 1A-220 is to be used as a swing space for the equipment during the phasing.

ANSWER: Room 1A-220 is used as a storage swing space only, as noted on drawing PLF-301.

20) If Room 1A-220 does not provide enough room for the relocated equipment, is there another room that the contractor can use as swing space?

ANSWER: If Room 1A-220 does not provide enough room for the storage of equipment, Room 1A- 110 may be used. EPA to confirm.

21) If the contractor is to relocate the equipment, what measures will be taken by the GSA prior to moving the equipment to identify equipment that may be damaged, broken or not working prior to the contractor relocating the equipment?

ANSWER: It is the recommendation of Iron Horse that the contractor perform photo documentation of all equipment to be relocated/stored prior to relocation/storing of equipment.

Photos should be handed over to GSA/EPA Project manager on flash drive or disc. Items deemed to be damaged due to contractor activities (relocation, storage, etc) are to be repaired or replaced at contractors expense. Items stored shall be protected from construction activities (including adequate dust cover). Insurance coverage is to be provided upon owner request if stored off-site.

Owner is responsible for insuring all equipment to be relocated/stored is properly prepared (shut down, cleaned, all accessories are account for, etc) prior to contractor relocation. (IHA)

22) If the Contractor is to relocate the equipment, is the contractor responsible for uninstalling, re-installing, turning on and commissioning the equipment once it is relocated?

ANSWER: Yes, (IHA)

23) If the Contractor is to relocate the equipment, is the contractor responsible for delivering the

Region 8 equipment from Golden to the NEIC facility or will it be moved to the NEIC facility and the contractor takes it from there?

ANSWER: Contractor is responsible for relocating Region 8 equipment from Golden to the NEIC Facility. (IHA)

24) Sheet A-000 of the Phasing documents identifies Block B, C, D, E, F, G, H etc. I was unable to locate a description for these Blocks. Can the GSA please identify where these Blocks are located?

ANSWER: Refer to answer number 2 from Round 1 of questions.

25) The graphical/drawing representation of the phasing plan is a little bit confusing. Can the GSA provide a detailed written narrative identifying their intent/understanding of the phasing plan?

ANSWER: Refer to previous comment response in Round 1 of questions. The intent of the phasing plan is to first build out the new lab block in Area A, which will subsequently be used as lab swing space as the balance of the existing lab are renovated. The grouping of rooms/labs in each phase of the renovation and more or less tied to the mechanical zones of the building to best provide containment and allow for shutdowns, while maintaining required means of egress from all occupied spaces. A post-award phasing meeting will be held with the successful bidder to further discuss the current phasing strategy and validate or amend as deemed necessary by all parties.

26) During the site visit, the GSA states that the building was free of abatement and abatement inside the building was not expected. Can the GSA please provide a clean letter stating that the building is free of Asbestos Containing Building Materials?

ANSWER: No letter will be provided. Please propose based on GSA’s belief that there is no asbestos.

27) Please confirm that there are no LEED requirements for this project and that LEED certification is not required for this project.

ANSWER: LEED is not a requirement of the project.

28) Please confirm that the contractor is not responsible to correct any unseen, noncompliant code or

P-100 requirements that are discovered during construction.

ANSWER: As the General Contractor is expert in the field of construction, the Government would rely on the Contractor for their expertise, but also on the teaming effort to resolve any undiscovered issues that arise during construction.

29) Please confirm that the contractor is not responsible to provide 3rd party commissioning of the system.

ANSWER: The CxA will either be under separate contract with the owner, or under management by the design team.

30) Spec Section 01 22 00 of the project Manuel identifies Unit Prices, however the SF 1442 only provides a space for the base bid. Please confirm that the unit prices are not required to be submitted with the SF 1442.

ANSWER: In reference to spec section 012200 and 012300, Please provide alternate unit prices for the control system on a supplemental pricing sheet.

31) Spec Section 01 23 00 of the project Manuel identifies Alternates; however the SF 1442 only provides a space for the base bid. Please confirm that the Alternates are not required to be submitted with the SF 1442.

ANSWER: In reference to spec section 012200 and 012300, Please provide alternate unit prices for the control system on a supplemental pricing sheet.

32) Please clarify badge processing time for both Short-Term and Long Term Contractor Clearance.

ANSWER: Badge processing time varies. There are multiple scenarios for issuing badges and since the issuance is not done by GSA, but by OPM, it is an unknown variable. GSA intends to work with the Awardee to badge necessary employees as quickly as possible.

33) Specification 01 10 00 - 1.10-H states "No parking will be available to the Contractor on site….

Make their own arrangements for vehicle parking off site." Spec 01 50 00 - E, indicates temporary parking areas for construction related vehicles. Please confirm whether or not onsite parking areas will be available for construction related vehicles?

ANSWER: Spec 01 50 00 - E, indicates temporary parking areas for construction related vehicles.

There is not unlimited parking for construction employees to park next to building 25.

34) Section 1.02.B.1 - references Section 05 73 00 "Decorative Metal Railings". This spec section is not currently included in the Project Manual. Please clarify.

ANSWER: There are no Decorative Metal Railings in project

35) Please confirm Sign Type A; located in the Shared Garage Bay (1A-375) is the only sign required to be furnished and installed by the contractor.

ANSWER: Correct.

36) In the suggested phasing schedule renovation of Hallway 1C-145 is shown taking place during

Phase 1b, please confirm we can schedule this work for Phase 2 when the adjacent lab rooms are being renovated.

ANSWER: No - 1C-145 is being constructed as a chemical control area that will store chemicals from chemicals currently housed in 1C-540A which needs to be completed before work in 1C-540 begins.

37) In the suggested phasing schedule renovation of Acid Neutralization 1C-535 is shown taking place during Phase 1b, please confirm we can schedule rooms Shared Organic Storage 1C-540- A and Shared Gas Cylinder Storage 1C-540B renovations during this phase as well.

ANSWER: No - Work in 1C-145 needs to be completed before work in 1C-540 begins (see question 37 for clarification)

38) Please confirm if the following rooms will remain occupied during Phase 1 construction: 1A-080, 1A-085, 1A-090, 1A-095, 1A-110, 1A-115.

ANSWER: Yes, all rooms listed will be occupied.

39) Please confirm if room 1D-525 will remain occupied during Phase 2 construction.

ANSWER: Yes, 1D-525 to remain occupied.

40) To ensure that we understand the intent of the Phasing Documents as indicated in the Enlarged

Lab Plans, please confirm/comment on the following:

- Detail "1" on the Enlarged Lab Plans represents the work necessary to prepare the Lab to be temporarily occupied by Blocks D, E and H (this work occurs during Phase 1 to allow Blocks D, E and H to occupy the Labs during Phase 2 construction)

- Detail "2" represents the work necessary to prepare the Lab to be temporarily occupied by Blocks F and G (this work occurs at the end of Phase 2 construction to allow Blocks F and G to occupy the Labs during Phase 3 construction)

- Detail "3" shows a third configuration which appears to be different than the final build-out configuration contained elsewhere in the plans. What is the intent of Detail "3" on the Enlarged Lab Plans (i.e. which Blocks will occupy the Lab spaces in this configuration and how does this configuration relate to the Phasing Schedule provided)?

ANSWER: - Detail "1" on the Enlarged Lab Plans represents the extent of work necessary to prepare the lab to be temporarily occupied during Phases 2 & 3. Reference corresponding enlarged lab plan LF sheets for drawing details.

- Detail "2" (and corresponding "Phase 2" equipment schedule below) on the Enlarged Lab Plans represents the proposed layout of equipment to be operational during Phase 2.

- Detail "3" (and corresponding "Phase 3" equipment schedule below) on the Enlarged Lab Plans represents the proposed layout of equipment to be operational during Phase 3. Note: some instances of equipment may be running for the duration of Phases 2 & 3.

NOTE: If utilities for phase 3 wish to be installed subsequent to Phase 2, they may be done so at the contractors discretion for time and construction restraints.

(IHA)

41) Please provide existing heights from finished floor for ceiling grid and floor/roof deck.

ANSWER: Heights of new ceilings match existing conditions.

42) Please confirm if any or all of this project will be tax exempt?

ANSWER: The Government is tax exempt. Although the work is for the Government, it is the contractor’s and subcontractor’s responsibility to check with their suppliers if the Government Tax Exempt certificate will be honored.

43) 1.03, Scope - Specification is calling for the above-ceiling plenum for return air to be cleaned. Is this necessary for this project? The sensitive areas (labs) are makeup air and exhaust and wouldn’t have any plenum return. Please confirm.

ANSWER: Construction debris should be removed from all plenums, but thorough cleaning may be limited to those plenums that are being utilized as a return plenum, e.g. area A office spaces and level 2 offices.

44) 3.04, Cleaning H. 3 - Specification is calling to replace unremediable fibrous glass material at no additional cost to the owner. As we don’t know the current site conditions and have no way to assess what is encompassed in this scope of work this would have to be priced on a contingency basis. Pricing for this could be as high or higher than the cost to clean all the ducts. In the interest of the competitive bidding process and to offer the government “apples to apples” pricing, can the design team establish a contingency amount that all bidding subcontractors can carry in their bid for this scope of work? Or can the verbiage be such that, if fibrous materials need to be replaced, that a cost could be evaluated at that time?

ANSWER: A contingency amount of $5,000 will be allocated for this purpose.

45) General Note #4 - states “existing services and insulation that is not plenum rated that have plenum return to existing AHU-1201 shall be removed and replaced with plenum rated materials or shall be encapsulated with fire wrap, similar to 3M Fire Barrier Plenum Wrap 5A+, to exclude them from the plenum.” As we don’t know the current site conditions and have no way to assess what is encompassed in this scope of work, this would have to be priced on a contingency basis.

In the interest of the competitive bidding process and to offer the government “apples to apples” pricing, can the design team establish a contingency amount that all bidding subcontractors can carry in their bid for this scope of work?

ANSWER: A contingency amount of $10,000 will be allocated for this purpose.

46) It appears that the air valve quantity differs from the schedules to the mechanical floor plans. Will the exact quantity of new air valves be identified?

ANSWER: PHX-1305-03 is missing its tag on plan. It is serving room 1C-225A and is located in the hallway just outside the room, plan west. For clarification, the blacked out spaces in the Phoenix Valve Schedule indicate valves that do not have/require a hot water coil.

47) Given the complexity of the project, and in order to ensure competitive pricing from our extremely busy local subcontractor community, we respectfully request a bid date extension of (1) week.

ANSWER: Yes, the due date for proposals is extended to 12pm, Noon, Friday, October 21, 2016.

48) Question left blank.

49) Drawing P-000, plumbing general note 18, indicates domestic hot and cold water piping above ground to be Type L copper. Spec section 22 10 05-3, 2.04 A indicates Type K copper?

ANSWER: Type L copper may be used for above grade domestic water services.

50) Please provide designation of lighting fixtures on sheet E331, Lab 1C-630. Currently the indirect fixtures are identified as LED. Should they be Type FP?

ANSWER: Fixture should be Type FP.

51) Will x-rays/scans be required for second floor penetrations?

ANSWER: X-ray is not required. Structural will provide penetration support detail post-bid.

52) Refer to drawing M-111D, keynote 18. What size is the existing pipe in this location?

ANSWER: The record drawings from the previous renovation show these lines to be 1-1/2". Piping shall be field verified for sizing prior to ordering meters.

53) Refer to drawing M-201. New pumps indicated by keynote 2 are not scheduled?

ANSWER: Boiler room portion of project, including referenced pumps, has been removed from this project scope in Addendum #1 and released as an independent project.

54) Refer to drawing M-103A, keynote 1 & 2. Don’t know what this is. Duct / pipe?

ANSWER: The venting to offset is piping. Refer to picture of existing condition.

55) They are showing two new HWP's but there is no schedule for them can we get some information on them so I can get a quote for them?

ANSWER: Boiler room portion of project, including referenced pumps, has been removed from this project scope in Addendum #1 and released as an independent project.

56) MD-111A Note one says to demolish existing terminal unit thermostat, wiring and controls. Is there a terminal box with piping that has to be demolished or is it just the controls?

ANSWER: Terminal unit and all associated service are to be demolished. New terminal unit ATU-1 is installed to replace it.

57) MD-111D Note one says to demolish existing Phoenix Valves and associated hot water coil at supply air valves. Demolish HWS/R piping back to isolation valve cap and valve off. It does not show any piping to these units.

ANSWER: Some units with tags are exhaust air valves. The note indicates that piping associated with coils at supply air valves are to be demolished. Refer to duct sheet MD-101D for clarification on if valves serve supply or exhaust system to lab. All supply air valves shall be assumed to have a heating coil with piping whether shown on plans or not.

58) Is this a 100% domestic material job?

ANSWER: This project must abide by the Buy American Act per division 1 spec 016000 section

2.02 , products must be “domestic” The Buy American Act imposes a two-part test:

(1) The end-product must be manufactured in the United States, and

(2) more than 50 percent of the cost of all the component parts must also be manufactured in the United States.

If a product meets this two-part test, then a product can be considered a "domestic end product" under the Buy American Act.

The solicitation document also incorporates a Buy American Act Clause.

59) They are calling for 1-1/2" Pipe but the original lines look to be 3/4". Are we to demo these lines and run new from the main?

ANSWER: In reviewing the existing mains, these are 3/4" mains. The existing mains from (E) PHX- 1303-01 to the 3" mains in corridor shall be removed and replaced with new 1-1/2" mains. Provide new 3/4" tap from 1-1/2" mains and connect to existing to remain coil at (E) PHX-1303-01.

60) M-111D Are we piping to the chillers that are in the ceilings in area D and Area A?.

ANSWER: The chillers are lab equipment and are air cooled. Piping is indicated on M-111D to be routed concealed for from house connection and isolation valves in chiller room 1C-620 to wall outlets in 1C-630 for service to lab equipment and are installed by mechanical contractor.

Connection from chiller to piping and from valves to equipment is by lab equipment installer. On M-111A, piping is to be installed concealed from the 2 chiller rooms associated with 1A-250 to spigots at the counter. Refer to lab drawings for exact quantity and locations of spigots. The concealed piping, connection fittings and isolation valves in chiller closets and spigots on counters to be provided and installed by mechanical contractor. Connection from chiller to piping and from spigots to equipment shall be by lab installer. Chilled water piping shown in 1C-1150, 1C-160 and 1C-520 routed to chiller cabinets is for service to fan coil units (FCU-7) mounted in chiller cabinet. Piping to route above ceiling and drop down into cabinet for service to FCU..

61) Are the Btu Meters new locations or are they replacement meters?

ANSWER: All BTU meters shown are new installations. There are no existing meters being replaced.

62) Are all Phoenix Valves getting replaced?

ANSWER: No, some are intended to remain with new replacement controls to convert from the existing pneumatics to electric actuators. The schedules on M-402 and M-403 indicate in the notes if valve is existing and planned for a new controller. All other valves not such noted are new. As clarified in Addendum 05, all air valves serving a single lab shall be by one manufacturer and that any modified Phoenix valve shall have new controller by Phoenix. The contractor has the option to replace all Phoenix air valves as desired if alternate manufacturer is preferred to using Phoenix valves.

63) Are all terminal boxes getting replaced?

ANSWER: No, existing terminal units shown to remain (noted by "(E)" before the unit tag number) will be rebalanced for indicated airflows. Only one new terminal unit is planned and this is scheduled on M-401.

64) The spec is calling out 2” and under to be threaded steel pipe or type K copper, is this correct?

ANSWER: Correct, it is contractor option to use sch 40 black steel piping or Type K copper for piping 2" and under. Proper di-electric connections will be required between dis-similar piping materials. Above 2" to be sch 40 black steel welded fittings with flange connections at valves and equipment.

65) M-111B It says to extend new branch to new FCU but there is no location for the FCU shown on the prints.

ANSWER: Note incorrectly located. There is not a FCU in this location. No piping needed. Nearest FCU is to south in corridor for service to 1A-270 as shown on M-111A.

66) 234000 What is the specific application for the Bag-In Bag-Out housing? (industrial, pharmaceutical, biological) ANSWER: The housing is for the HEPA filters installed in the exhaust air stream to EF-1201-C,D indicated by tag F-1 and key note 4 as shown on M-103A. The exhaust is from fume hood in asbestos lab and is for filtering any residual particles in airstream prior to discharge to atmosphere.

67) 234000 What material should the housing be made from? (304 S/S or 316 S/S)

ANSWER: Spec section 23 40 00 2.08 A, indicates the material to be 304 SS for the filter housing.

68) 234000 What is the expected CFM on this system?

ANSWER: The housing is for service to EF-1201-C,D. One fan is to run at a time. Refer to schedule on M-401 for fan capacity.

69) 234000 Will the pre-filter and final filter be accessed through a single door or will they require separate access? (two doors) ANSWER: Two doors as noted in 23 40 00 2.08 E that notes each tier of filtration will have a door.

70) 234000 Which side of the unit should the access door(s) be located?

ANSWER: Doors would be expected to be installed on the west side (left looking at inlet of housing) to allow maximum service access. Final determination will need to be coordinated with installer prior to order.

71) 234000 Is a test section required?

ANSWER: A dedicated test section is not intended. Please refer to 23 40 00 2.08 K that indicates the desired test ports and their locations. Also note item J that calls for static pressure ports to be installed across each filter bank (pre and HEPA) for indication of filter loading. Magnehelic gauges are also required in item L.

72) 234000 Will the housing require inlet and outlet transitions and dampers? If yes, please specify inlet an outlet ducting sizes.

ANSWER: The housing will require inlet and outlet transitions as shown on M-103A. It is at the discretion of the installing contractor if the transitions are to be provided with the housing or shop fabricated with the welded stainless steel exhaust ductwork. Refer to plans for duct inlet sizing. No dampers are planned since there is a single housing serving only one hood.

73) 234000 Is there a requirement for decontamination ports?

ANSWER: It is intended that the test/challenge ports will be used for decontamination if required.

74) 234000 Key Notes #4 specifies mounting the housing on rood curb rails. Will the unit sit directly on these rails or are stilts required on the housing?

ANSWER: Housing can sit on curb or may need to be raised up depending on construction of inlet and out transitions and the connection to the fan plenum box. This will need to be reviewed and detailed by the installing contractor.

75) 234000 The final filter is called out as a MERV 17 rating. Is this expected to be a HEPA level efficiency? If yes, what efficiency is expected?

ANSWER: Yes, the filters for housing F-1 are to be HEPA grade filters with 99.97% efficiency.

Refer to 23 40 00 2.05 (note - item 2.05 C incorrectly notes MERV 15, should be MERV 17 per schedule. Section 2.05 shows similar to AAF AstroCel1 at 99.97% eff)

76) Ceilings There seems to be discrepancies between the finish schedule and the RCP legend in terms of where the new ceiling tile is to be applied. For example: 1D-525 on the Finish Schedule states ACP-1. When you look at it on the RCP it is hatched as if it were to be Existing to Remain.

Please confirm if the RCP plans take precedence in these cases.

ANSWER: The RCP drawings are correct and should be followed for ceiling material.

77) 115300 & 132114 Both of these specification sections appear to cover the cold room. Please confirm which specification takes precedence in cases of conflict.

ANSWER: 132114 shall take precedence.

78) 071326 Locations for waterproofing could not be found in the plans. Please confirm where this system will be required. Is this located at the new concrete pits?

ANSWER: Provide exterior waterproofing at acid vault, please refer to spec section 07 13 26- 1.02.A.1.

79) M-111C, Level 1, Area C. I do not have a print for area C new piping?

ANSWER: No renovation piping installed in area C. This is indicated on the legend on M-000 that does not have a sheet listed for this area.

80) M-111B, Note 4. Only one location is shown, is that correct?

ANSWER: Correct, there is one drop for the two condenser connections. Exact location and piping will need to be coordinated with the vendor supplying the coolers.

81) The lab drawings list a spec number for a Haws emergency shower but the plumbing only indicate a rough-in and final connection. Who is supplying the fixture?

ANSWER: These are under lab equipment as specified in 11 53 00.

82) Note 2 on drawing P-111D indicates that the lab gas is supplied and installed by the lab equipment installer. Does that reference all lab piping or just at the cylinder manifolds?

ANSWER: NOTE 2 is intended to clarify lab equipment installer is to run tubing from equipment to nearest local dewar or valve provided at overhead carrier. It is the understanding of the design team that all laboratory gas piping, whether it be from a cylinder manifold or from house systems to overhead service carriers, will be installed by a plumbing contractor. Lab Equipment installers are contracted for the installation and commissioning of the laboratory instrumentation itself, not the routing of plumbing lines. Division of scope is to be verified general contractor.

BLDG 41 DFC PO BOX 25546

W 6TH AVE & KIPLING STREET

DENVER, CO 80225-0546

The purpose of this amendment is to incorporate all of the questions and answers received for the solicitation.

All questions and answers have been published as document attachments on the Government website, www.FBO.gov. This amendment incorporates all of the questions and answers into the solicitation and the contract award. Contractors are advised to acknowledge all amendments via the instructions listed in block 11 of this SF30 or via block 19 on the SF1442.

BLDG 41 DFC PO BOX 25546

W 6TH AVE & KIPLING STREET

DENVER, CO 80225-0546

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