Solicitation SOL-10-0002 Amendment 01.pdf

AMENDMENT OF SOLICITATION/MODIFICATION OF CONTRACT 1. CONTRACT ID CODE PAGE OF PAGES l l 6

2. AMENDMENT/MODIFICATION NO

3. EFFECTIVE DATE

02t25t20t0

4. REQUISITION/PURCHASE REQ. NO. 5. PROJECT NO. (tf applicable)

6. ISSUED BY CODE

USDA, ARS, Mid South Area Procurement Assistance Offi ce 141 Experiment Station road P. O. Box 225 Stoneville. MS 38776 -0225

7. ADMINISTERED BY (l / other rhan l tem 6) CODE

Same as Block No. 6

8. NAME AND ADDRESS OF CONTRACTOR Q,lo., street, county, State and ZIP Code) o

( / ) 9A. AMENDMENT OF SOLICITATION NO

AG-4431-S- l0-0002 9,BDAIED (SEE rTEt,t 1'

02t0v2010

X X

1OA. MODIFICATION OF CONTRACT/ORDER NO

IOBDATEWSEE trEM ry

CODE FACILITY CODE

11. THIS ITEM ONLY APPLIES TO AMENDMENTS OF SOLICITATIONS

I Tlre aOove numlered solicitation is amended as set forth in ltem 14. The hour and date sp€cilisd for r€ceipt of Offer

X is enended, tr is not enended.

Ofiers musl ecknowledge receipt of this amsndmont pdor to the hour and date spccified in lhe solicilation or as amonded, by one of lhe following methods:

(a) By completing ltems 8 and 15, and returning I copies of the amendment; (b) By acknowledging receipt of this amendment on each copy of the offer submitted; or

{c) By separsta letter or telagtam which indudes eEEEnce-ldlhc solicjlation and amendmenl numberc. FAILURE OF YOUR ACKNO\ /LEDGMENT TO BE RECEIVED AT THE PLACE DESIGMTED FOR THE RECEIPT OF OFFERS PRIOR TO THE HOUR AND DATE SPECIFIEO MAY RESULT IN REJECTION OF YOUR OFFER. If by viNu6 Of this amendment you desir€ to change an offer alleady submilled, such changs may be made by telegram or letler, provided €ach telegram or leller makes rcfeence to lhe solicilation sndlhis amendmenl, and is received prior to lhe opening hour and del€ specified.

12. ACCOUNTING AND APPROPRIATION DATA (tf 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 lS ISSUED PURSUANT TO (Specify authority) THE CHANGES SET FORTH lN ITEM 14 ARE MADE lN THE CONTRACT ORDER NO.

IN ITEM 1OA.

B. THEABOVE NUMBERED CONTRACT/ORDER lS MODIFIED TO REFLECTTHE ADMINISTRATIVE CHANGES fpcn ar crars€s i, wins ofice, awrcpriation date,etc) SET FORTH IN ITEM 14. PURSUANTTO THEAUTHORIry OF FAR 43.103(b).

C. THIS SUPPLEMENTAL AGREEMENT IS ENTERED INTO PURSUANT TO AUTHORITY OF:

D. OTHER (Specrfl type of nodiJication and authority)

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

14. OESCRIPTION OF AMENDMENT/MODIFICATION (Oryahized by UCF secnn heo.lirys, ircludirg solicitatiotr'contrct subject natet where feastble.)

This amendment contains clarifications, questions and answers received after the site visit meeting held on 2/1712010 on the attached pages. All other terms and conditions remain the same.

AS A REMINDER: This solicitation is a 100% set-aside for Service Disabled Veteran Owned Businesses (SDVOB).

The BID DATE IS EXTENDED TO: 03/09/2010 at 2:00 D.m.

SUBMIT BIDS TO:

USDA, ARS, MSA, Procurement O{Iice P. O. Box 225, 141 Expedment Station Road Stoneville, MS 38776 Excepl as plovided herein, all t€rms and conditions ot the doormenl rcferenced in ll€m 9A o. 1 0A, as heretofoae changed. remaans unchanged and in full force and effed, 15A. NAME AND TITLE OF SIGNER (rype or print) TITLE OF CONTRACTING OFFICER (rype or print) on outhorized to si

PREVIOUS EDITION UNUSABLE

This form was electronically produced by USDA/ARS/OCIO/ADB.

-2(*lo STANDARD FORM 30 (Rev. 10-83) Prescribed by GSA

FAR (48 CFR) 53 243

TERRY A. KRUTZ

Solicitation No. AG-4431-S-10-0002. Amendment No. 1

CLARIFICATIONS FROM SITE VISIT:

- The piping and conduit shown on the pipe support horizontal member (CI5x33.9) cannot be fitted as shown on Drawing M3 in the "Insulated Pipe Support Detail". It was suggested that a cross member could be added to the Cl5 x 33.9 to effectively widen the mounting length beyond 15" so that all piping could be cormected to the >15" long cross member and then be arranged in the section view as shorn on the drawing.

-The contractors were told to delete 2 sentences under the Chilled Water Ooeration at the end of the 6s paragraph.

The sentences read as follows:

EXTEND THE EXISTING TRANE DDC SYSTEM ON AHU-2 TO AHU-I. PROVIDE COMPUTER

WITH GRAPHIC INTERFACE IN OFFICE OF ROINC. THIS SYSTEM DOES NOT HAVE TO

INTERFACE WITH GREAT LAKESCENTRAL SYSTEM.

-The contractors were infomed that the existing MDP would be replaced under another contract prior to the installation ofthe 140 ton chiller.

-The contractors were told that we are aiming to minimize the service intemrption for the Hamed Building

HVAC.

- They were instructed to reuse the existing slab for the cunent cooling tower as the foundation for the new 140 ton chiller.

- They were instructed to add to the existing slab ifneeded by doweling the new slab extension into the existing slab, that is, if their chiller selection footprint required a larger slab than is currently there.

The contractors were told that a weekend installation of the chiller could be accomolished if:

- The old slab was reused as suggested

- All chilled water supply and retum (overhead and underground) including electrical conduit were pre-piped and in place with the exception of the final tie-ins

- The existing cooling tower could then be removed

- The chiller could be immediately set in place

- The final tie-ins could then be made (chilled water, electrical, instrumentation and controls, etc)

- The current chiller and final piping demo could be done at a later date.

SITE VISIT OUESTIONS AND ANSWERS

Q.l Keyed Note 1 on sheet M-l states to remove existing cooling tower and concrete slab. Is the 15' x 15' x 30" slab a flat slab that is 30 inches deep or is it a sump with walls? Is the cooling tower a packaged or field erected tower? Does the tower sit on the slab or in a sump?

A. The cooling tower is on a slab. The cooling tower is a packed unit.

Solicitation No. AG-4431-S-10-0002, Amendment No. I e.2 please confirm that the piping, valving, etc on the discharge side of P I and P 2 is existing and is not to be demoed or replaced?

A. The pumps and discharge piping are to be replaced in the boiler project' e.3 please verifl that a check valve is required on the CHWR at the new chiller? Also please confirm that no flex connectors are required at the CHWS & R of the new chiller or pumps?

A. A check valve is shown on sheet M-3. Please refer to piping details for chilled water system on the chilled water detail.

e.4 please advise how and where the conduit and wiring serving the existing condenser water pump is to be terminated once the pump is removed?

A. The conduit and conductors shall be removed to the source (panel)'

Q.5 I wanted to find out ifa rental package will be needed during the replacement of the 100-T air conditioning unit.

A. At this time we are not including any temporary cooling for this project'

Q.6 The chiller specs refer to a Rotary Screw compressor in section 23 64 10,p?[]a.2.5.5.1 (pg' 12)' but the

,ih"d.rl" states "Scroll" for the chiller iype. Can you confirm the compressor tlpe specified for this chiller?

A. The chiller is called for 140 tons. This is right on the edge ofscroll and rotary screw' Will accept either one with the best efficiency.

Q.7 Specifications refer to a Factory Test requirement ol page 17. It appears in this paragraph that the riquire.ment is for factory testing, however in pgagraph 3.4.2 it appears that the testing should be done in the freid. Is field testing acceptable for this project?

A. Can be done in field'

Q.8 Painting of the boiler room - will all mechanical piping in the boiler room need to be painted? Existing & new? or will the new piping only be painted?

A. Only piping installed on this project shall be painted'

Q.9 Will the existing valves, strainers, check valves, etc be used in the changeover for the pumps, since the

"iirtirrg pu.pt -e being utilized, or will new accessories be required?

A. The existing pumps will be changed in the boiler project under construction now. So will be new.

e.l0 please specify the Controls (brand &/or company) being used in order to assure proper tie- ins in the boiler room.

A. The controls are Raypac DDC system. It is essential the controls for the boiler and chiller are linked for the change over in the two PiPe sYstem.

Solicitation No. AG-4431-S-10-0002. Amendment No. I

Q.11 Please elaborate on the requirement for HVAC controls for tlis project, what brand ofcontrols are being installed for the boiler project, and approximately how far the boiler control panel is located from the chiller mechanical room.

A. The boiler room is the next room over. Shown on drawing M-l.

Q.12 Please fumish submittal of new electrical switchgear that will be installed under a separate contract.

A. This project has not been started.

Q.13 Could you please provide info on what type DDC controls system will be in place for this job. Also, where the control panel will be located.

A. The DDC system is Raypac, the panel will be located in the boiler room next room over.

Q.14 We need to know who the control company is that will be installing the new DDC system they are installing now with the new boiler. Name, who to contact and phone number.

A. Jamco Inc. 205-833-3390

Q.l5 How far will the new ddc control panel be from the chiller?

A. 40 feet

Q. 16 Since they are changing the switch gear panel before we install the new chiller we need to know that provisions have been made for the new chiller breaker ifnot we need to know what brand of switch gear is going in before we can price that part

A. Will have to estimate without knowing for sure, since the project has not started yet.

Q.17 We also need to core drill holes in the wall above the switch gear if they are changing it out, can we drill holes while the old is being replaced?

A. Yes

Q. I 8 Can we run the entire pipe above ground since half of it will be above ground anyway?

A. No

Q. 19 Change out and tie in of old equipment is to be done over a weekend please confirm that is what they want?

A. Yes

Q.20 Can we extended existing pad to accommodate the new chiller?

A. Yes

Q.21 Can we use existing pipe bracket over sidewalk for the new pipe?

A. Yes

Solicitation No. AG-4431-S-10-0002, Amendment No, 1

Q. 22 PLEASE CLARIFY IF PIPING, AND FITTINGS AT PUMPS ARE BEING REPLACED OR IF NEW

CHILLER PIPING WILL BE TIEING INTO PUMP HEADER AND EXISTING PUMP PIPING AND

FITTINGS WILL REMAIN. DEMO SHEET, Ml ONLY SHOWS PIPING BEING DEMOED FROM AIR

SEPERATOR TO PUMP HEADER. AND DETAIL SHEET M3 DOES NOT CLARIFY WHERE

CONNECTION POINTS WILL BE. ALSO, IS EQUIPMENT SHOWN ON SHEET M3 (Air separator, expansion tank, chemical feeder, and make-up water train) being replaced or shown as existing?

A. The boiler project will replace the existing pumps and accessories.

Q.23 Please provide the manufacturer, model number and the equipment's location for AHU-2 and AHU-I.

(M-3 statement: Extend the existing Trane DDC system on AHU -2 to AHU-I).

A. This note on the drawings is an error. The DDC system is only for the chiller and pumps

Q. 24 Please provide existing control diagram and/or sequence of operation for the existing DDC controls. (M- 3 statement: follow the DDC programming already in the heating system controls.

A. Will have to coordinate with the boiler contractor for the DDC

Q. 25 Please provide the manufacturer and model number of the new boiler (fumished and installed by others).

A. Raypac, Raytherm H3-1631

Q.26 Are there drawings and specifications for the boiler replacement contract that may be shared with bidders on the 100 ton AC solicitation? (M-3 statement: NOTE: Provide DDC system that is compatible with existing hot water system).

A. Not at this time. The as builts will be available when they are processed.

Q.27 Please verify that the chill water pipes may penetrate the exterior wall to the side of the existing louver opening, stacked in a vertical plane to fit the 1"-8 wide area.

A. Yes, this will be acceptable.

NOTE: THE BID DATE AND TIME ARE EXTENDED TO: March 9,2010 at 2:00 p.m.

Bids must be received at the address shown in block number 8 of the SF-1442.