Attachment_-_Revised_Addendum_to_Specifications_0001.pdf

ADDM-1, Page 1

ADDENDUM NO. ADDM-01 National Park Service – Interior Regions 3, 4, 5 Facilities, Planning and Infrastructure to the 601 Riverfront Drive Bidding Documents Omaha, NE 68102 for 31 March 2022

OZARK NATIONAL SCENIC RIVERWAY – CONSTRUCT HOUSING UNIT

404 Watercress Drive Van Buren, MO 63965 PMIS No. 310435

NOTICE TO BIDDERS: The Specifications and Drawings for the above referenced project are hereby amended as follows:

SPECIFICATIONS – GENERAL

ITEM NO. G-1 TABLE OF CONTENTS

a. DELETE Section 01 26 01 Contract Modification Procedures in its entirety

ITEM NO. G-2 SECTION 01 11 00 SUMMARY OF WORK

a. Part 1.2 D, Period of Performance, DELETE ‘Period of Performance shall be 30-36 weeks’, and replace the sentence with The Period of Performance shall be conducted in a single phase. The Period of Performance work shall be completed within 280 calendar days after issuance of the Notice to Proceed (NTP).

b. Part 1.6, CONDUCT OF OPERATIONS, Part b., DELETE ’24 hours in advance of work’ and replace with 72 hours in advance of work. Add sentence to end of part stating ‘The COR retains the right to deny requests for work on weekends, Federal holidays, or night subject to availability of required COR or park staff to be present or respond during those times of work outside the standard work day hours established.

ITEM NO. G-3 SECTION 01 26 01 CONTRACT MODIFICAITON PROCEDURES

a. DELETE section 01 26 01 in its entirety. Contract modification procedures are provided in other Contracting documentation provided by the CO.

ITEM NO. G-4 SECTION 01 31 00 PROJECT MANAGEMENT AND COORDINATION

a. Part 1.1 SUMMARY, B.4., DELETE reference to Section 01 91 14, ‘Total Building Commissioning’ in its entirety.

b. Part 1.4 SUBMITTALS, A. and B., DELETE in its entirety and replace with the following language:

A. General Submittal Procedures: Submittals shall be prepared and provided for the individual Specification Sections. Types of submittals are indicated in individual specific sections. CM-16 Transmittal Form: All submittals shall be transmitted via email using National Park Service form CM-16 form. The form will be provided by the Contracting Officer. No action will be taken on a submittal item unless accompanied by the CM-16 transmittal form. Contractor shall submit to Contracting Officer (CO) and Contracting Officer Representative (COR).

1. Documents to be submitted to Contracting Office before Notice to Proceed (NTP) will be issued (all are due 10 calendar days after notice of contract award):

1. Signed Contract

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2. Alternative Payment Protection - Must provide either a Payment Bond or Irrevocable Letter of Credit for construction contracts greater than $35,000, but not greater than $150,000

a. Payment Bonds - Must be provided for construction contracts exceeding $150,000

b. Performance Bond - Must be provided for any construction contracts exceeding $150,000

3. Certificate of Liability Insurance

4. Letter Designating the Project Manager and Site Superintendent and their authority as it pertains to this project

5. Safety/Accident Prevention Plan – must be approved before work can commence/start

If all of the documents listed above have not been received, Notice to Proceed will not be issued, and the Contracting Officer will consider other contractual remedies. Work shall not commence until written Notice to Proceed has been issued.

2. Documents to be submitted to Contracting Office after NTP has been issued and work can be performed on-site/begin (all are due 10 calendar days after issuance of NTP or otherwise specified below):

The following submittals shall be submitted with a CM-16 transmittal cover sheet to the CO/COR and submitted for approval as outlined below:

1. Work/Project Schedule -- delineating the various stages of work by phase

(milestones)

2. Contractor shall provide, when applicable but not limited to, copies of product specifications, manufacturer’s literature and installation instructions of all materials and products to be furnished and installed. COR will verify that product specifications meet contract requirements.

3. Quality Control Plan

4. Schedule of Values (if applicable)

5. Documentation of licensing or certifications as an approved installer by manufacturer of materials for each individual product submittal and shop drawing (if required)

6. List of individuals working on the project

7. SF1413 – Statement of prime contractor/acknowledgement of subcontractor

8. Safety Data Sheets (SDS) for each individual product submittal and shop drawing (if required)

9. Accident Prevention Plan

10. Waste Management Plan

11. Temporary Storm Water Pollution Prevention Plan (SWPP or UPPP)

12. indoor Air Quality (IAQ) Management Plan

13. List of Applicable Permis

3. The following submittals are required to be submitted before final payment is made:

1. Unless otherwise specified in the specifications, Contractor is required to provide at the end of the project a series of before, during and after pictures of what was completed. The pictures will include all areas the contractor is authorized to work on.

2. Manufacturers recommended care and cleaning requirements (if applicable)

3. Receipts from recycling companies showing quantity of material being recycled.

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4. Warranty documentation for workmanship (as outlined in the Specifications/Statement of Work: Start date of warranty will be the date shown on the Final Inspection Checklist/Report)

5. Product warranties (if applicable)

6. Pay applications

7. Certified payrolls – should be sent weekly

8. Contractor quality control daily reports (any outstanding)

9. Release of Claims - must be for the full amount of the contract (to include modifications)

10. SF1413 (any outstanding) - Statement of prime contractor/ acknowledgement of subcontractor

11. Drawings/pictures (if applicable), etc.

12. Testing Reports (if applicable)

13. Final Inspection Checklist/Report (initiated by the COR, all parties sign once complete)

B. Submittal List: A submittal list has been attached to the end of this Specification Section. The intent is to provide an overall summary of submittal requirements and not a comprehensive list. The requirements of the individual Specification Sections, terms and conditions of the Contract still apply regardless of what is shown on the submittal list.

C. If all of these documents have not been received in the timeframe outlined above, the Notice to Proceed will not be issued, and the Contracting Officer will consider other contractual remedies. Work shall not commence until written Notice to Proceed has been issued. Contracting Officer will notify the Contractor of tentative date for the Pre-Construction Conference after contract award.

ITEM NO. G-5 SECTION 01 32 16 CONSTRUCTION SCHEDULE

a. Part 2.2 CONSTRUCITON SCHEUDLE REQUIREMENTS, Part 7.i. DELETE Substantial Completion: Allow time for Government administrative procedures necessary for certification of Substantial Completion (For more information, refer to Division 01 Specification 01 77 00 Closeout Procedures.) in its entirety. Part 9., DELETE Substantial Completion from the sentence and REPLACE with Final Completion in the sentence.

b. Part 3.1 B. 1., DELETE substantial completion and REPLACE with Final Completion in the sentence.

ITEM NO. G-6 SECTION 01 35 23 SAFETY REQUIREMENTS

a. Part 3.4 SAFETY MEETINGS, A.,REVISE the last sentence which states Document and submit meeting minutes to the Contracting Officer within one day after the meeting to read Contractor Quality Control Daily Reports shall record documentation of each meeting taking place and be available to the Contracting Officer Representative upon request.

b. Part 3.4 SAFETY MEETINGS, B., DELETE Part B. in its entirety.

ITEM NO. G-7 SECTION 01 50 00 TEMPORARY FACILITIES AND CONTROLS

a. Part 3.5 OPERATION, TERMINATION, AND REMOVAL, C.

b. Part 3.5 OPERATION, TERMINATION, AND REMOVAL, D. DELETE Substantial

Completion from the sentence and replace with Final Completion. Part D, DELETE or no later than Substantial Completion from the first sentence. Part D.2. DELETE ‘At Substantial Completion’, and replace with Prior to Final Completion.

ITEM NO. G-8 SECTION 01 73 40 EXECUTION

b. Part 3.6 INSTALLATION, C., DELETE Substantial Completion from the sentence and replace with Final Completion.

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c. Part 3.6 PROGRESS CLEANING, H., DELETE Substantial Completion from the sentence and replace with Final Completion.

d. Part 3.9 PROTRECTION OF INSTALLED CONSTRUCTION, A., DELETE Substantial Completion from the sentence and replace with Final Completion.

ITEM NO. G-9 SECTION 01 77 00 CLOSEOUT PROCEDURES

a. Part 1.1 SUMMARY, A.3., DELETE Substantial Completion

b. Part 1.3 CLOSEOUT SUBMITALS, A.3.4., DELETE items 3. (temporary facilities removal) and 4. (Complete final cleaning requirements) in their entirety.

b. Part 1.4 FINAL INSPECTION, SUBSTANTIAL COMPLETION AND ACCEPTANCE

PROCEDURES, DELETE SUBSTANTIAL COMPLETION. Part 1.4.B., DELETE Letter of Substantial Completion from the sentence.

c. Part 1.5 PERMIT CLOSURE AND TRANSFER, B., DELETE substantial completion and from the sentence.

d. Part 1.6 WARRANTIES, A., DELETE other than date of Substantial Completion from the sentence.

e. Part 3.1 FINAL CLEANING, B., DELETE for certification of Substantial Completion. Part e., DELETE and ready for occupancy.

ITEM NO. G-10 SECTION 01 77 00 CLOSEOUT PROCEDURES

a. Part 1.1 SUMMARY, 3, DELETE ‘Substantial Completion’.

b. Part 1.4 FINAL INSPECTION, SUBSTANDIAL COMPLETION AND ACCEPTANCE

PROCEDURES, DELETE ‘SUBSTANTIAL COMPLETION’ from part title. Part A. , DELETE ‘Substantial Completion’ and replace with Final Completion. Part B., DELETE ‘and issue a Letter of Substantial Completion’. Part C., DELETE ‘substantially’ from the first sentence.

c. Part 1.6, WARRANTIES, Part A., DELETE ‘date of Substantial Completion’ and replace with date of Final Completion. ADD Part D. Construction Warranty for workmanship shall be based on date of final acceptance of the work and remain in effect for one year.

ITEM NO. G-11 SECTION 07 31 13 ASPHALT SHINGLES

a. DELETE ‘Substantial Completion’ and replace with Final Completion to the following parts of the section: 1.4 B and 1.4 C.

ITEM NO. G-12 SECTION 07 60 00 FLASHING AND SHEET METAL

parts of the section: 1.10 A. and 3.7 G.

ITEM NO. G-13 SECTION 07 92 00 JOINT SEALERS

parts of the section: 3.4 C.

ITEM NO. G-14 SECTION 08 14 00 WOOD DOORS

parts of the section: 1.6 B 1.

ITEM NO. G-15 SECTION 08 52 00 WOOD WINDOWS (& STEEL OR CLAD WOOD DOORS) AND

GLAZING

a. DELETE ‘Substantial Completion’ and replace with Final Completion to the following parts of the section: 1.10 B and 1.10 C

ITEM NO. G-16 SECTION 08 71 00 HARDWARE AND SPECIALTIES

parts of the section: 1.4 B.

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ITEM NO. G-17 SECTION 21 04 00 COMMON RESULTS FOR FIRE SUPPRESSION

parts of the section: 1.3 A., 1.13 B.3., and 3.14 A.2.

ITEM NO. G-18 SECTION 22 04 00 COMMON RESULTS FOR PLUMBING

parts of the section: 1.2 A. and 1.13 B.3.

ITEM NO. G-19 SECTION 22 33 00 COMMERCIAL ELECTRIC DOMESTIC WATER HEATERS

parts of the section: 1.7 A. 2.

ITEM NO. G-20 SECTION 22 40 00 PLUMBING FIXTURES

parts of the section: 3.11 C.

ITEM NO. G-21 SECTION 23 04 00 COMMON REQUIREMENTS FOR HVAC

parts of the section: 1.2 A., 1.13 B.3., and 3.19 A.7.

ITEM NO. G-22 SECTION 23 05 93 TESTING, ADJUSTING, AND BALANCING FOR HVAC

parts of the section: 3.1B

ITEM NO. G-23 SECTION 26 04 00 COMMON REQUIREMENTS FOR ELECTRICAL

parts of the section: 1.2 A., 1.12 B.1., and 3.16 B.

ITEM NO. G-24 SECTION 26 51 00 INTERIOR LIGHTING

parts of the section: 3.7 A.

ITEM NO. G-25 SECTION 27 05 01 COMMON WORK RESULTS FOR COMMUNICATIONS

parts of the section: 1.10 C.1. and 1.13. A.

ITEM NO. G-26 SECTION 28 46 00 FIRE DETECTION AND ALARM

parts of the section: 1.6 A., 1.6 B., and 3.7A.

ITEM NO. G-27 SECTION 32 92 00 LAWNS

parts of the section: 3.4 A. and 3.5 A.

ITEM NO. G-28 Prints Page 5 of 48

a. Notes #9 says that the water lines must be 42” deep, the existing water line run to the site is 36” deep and all exterior water lines need to maintain at least a 36”depth

ITEM NO. G-29 Prints Page 6 of 45

a. Demolition Notes #5 says implement an under an acre prevention plan and should say under an acre Storm Water Prevention Plan (SWPP)

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ITEM NO. G-30 Prints Page 7 of 45

a. Sheet Notes says implement an under an acre prevention plan and should say under an acre Storm Water Prevention Plan (SWPP)

ITEM NO. G-31 Prints Page 9 of 48

a. Water Notes #9 says that the water lines must be 42” deep, the existing water line run to the site is 36” deep and all lines need to be 36” deep.

ITEM NO. G-32 Prints Page 13 of 48

a. Roof Plan General Notes should say “All flues and vents to be within 2’ of the roof” This should say within 2’ of the roof ridge.

ITEM NO. G-33 Prints Throughout

a. There are several conflicts throughout the documents about the wall sheathing, some say ½” and others say 7/16”. We request 7/16” OSB sheathing for all walls where it is required.

ITEM NO. G-34 Prints Page 33 of 48

a. Key Notes # 2 says to exhaust dryer duct up in wall and route to exterior dryer outlet. We request the dryers in both units be exhausted straight through the exterior wall.

END OF ADDENDUM

ADDENDUM NO. 1 KENNETH HAHN ARCHITECTS

Architecture/Planning/ to the Interior Design/Engineering Specifications and Drawings 1343 South 75th Street

Omaha, Nebraska 68124

27 MAY 2022

OZAR – Alley Spring Duplex National Park Service Alley Spring, MO

KHA Project No. 145-064

NOTICE TO BIDDERS: The Specifications and Drawings for the above-referenced project are hereby amended as follows:

SPECIFICATIONS

ITEM NO. G-1, SPECIFICATIONS

A. DIVISION 6

a. 06 10 00 Rough Carpentry; Revise Section 2.3 Wall Sheathing to include the following additional sheathing option that can be substituted for the specified 7/16” OSB Wall Sheathing at paragraph 2.3 A., “Zip System Wall Sheathing and Tape or equal. Install per MFR’s requirements”. This option in lieu of the specified OSB and vapor barrier wrap shall be at the discretion of the General Contractor”.

B. DIVISION 7

a. 07 20 00 Building Insulation; Revise paragraph 2.2A to add the following note: “R-49 at attic”.

b. 07 20 00 Building Insulation; Add paragaraph 2.5 Damp-Proofing as follows: “Damp

Proofing shall be Hydrocide 700B by BASF or equal. Install per MFR’s requirements”.

c. 07 20 00 Building Insulation; Add paragraph 2.6 Vent Baffle as follows: “Vent Baffle shall be Durovent UDV2248 or an equal similar rafter ventilator product. Install per MFR’s requirements.”

d. 07 20 00 Building Insulation; Add paragrpaph 2.7 Air & Vapor Barrier as follows: “Air and Vapor barrier shall be 10 mil thick polyethylene sheeting conforming to ASTM D4397 and having a water vapor permeance of one perm (grains/(h*ft2*in.Hg) or less when tested in accordance with ASTM E96/E96M (Option to use Zip System’s vapor barrier coated sheathing solution, which is described at Section 06 10 00, shall be at the discretion of the General Contractor)”.

C. DIVISION 8

a. 08 30 00 Access Doors; Add paragraph 2.1.B Ceiling Access Doors as follows: “Ceiling

Access doors shall be prime-coated steel (sizes as shown on Drawings), with screw driver-operated cam locks and shall be one of the following types and manufacturers or approved equal): 1. Model M by Milcor, 2. Model TM by JL Industries 3. ModelDSC- 214M by Karp Associates, Inc.”

DRAWINGS

ITEM NO. G-2, SHEET G2, GENERAL NOTES

D. Add the following General Note No. 17 to Sheet G2’s General Notes: “Air barrier / Wall

Sheathing solution is at the discretion of the General Contractor (See specification Sections 06 10 00 and 07 20 00)”.

ITEM NO. G-3, SHEET A1, CRAWL SPACE PLAN 1/A1

E. Add the following note at the west foundation wall between the access door and the foundation’s

NW corner: “Provide and install a 1” PVC sleeve in foundation stem wall as required to accommodate the condensate discharge line from a dehumidifier (NIC- provided by government). Provide splash block for condensate discharge below the exit location of the sleeve. Caulk around hose after dehumidifier is installed.”

F. At overall dimension string on west side, change “55’-7 ½”” to read “55’-8”.

G. At overall dimension string on east side, change “10’-11 ¼”” to read “10’- 11 3/4””.

ITEM NO. G-4, SHEET A2, FLOOR PLAN 1/A2 AND WALL TYPES

H. Add the following note at Utility Rooms 109 and 209 6” beyond door swing on wall opposite laundry equipment: “Provide and install a bracket mounted 5 pound fire extinguisher I. Add the following note at Utility Rooms 109 and 209: “Provide and install a 20” x 30” attic access door/panel (locate in walking area beyond door swing.)” J. Revise dimension string at west side as follows: Change “55’-7 ½”” to read “55’-8””. Change

“11’-10 ½”” to read “11’-11””.

K. Revise dimension string at east side as follows: Change “25’-1 1/2”” to read “25’-2”. Change

“8’-0”” to read 8’-0 1/2””.

L. Add “7/16” SHEATHING” to Wall Type 6D’s listed components.

ITEM NO. G-5, SHEET A3, ROOF PLAN GENERAL NOTES

M. Revise Note 2 to read as follows: “All flues and vents to be within 2’-0” of the ridgeline”.

ITEM NO. G-6, SHEET A6, BUILDING SECTIONS 1/A6, 2/A6 AND 3/A6

N. Sections 1/A6, 2A6 & 3/A6 - Delete “Plywood” from the “Plywood Sheathing” note that is referenced. Wall sheathing is specified as OSB at specification Section 06 10 00.

ITEM NO. G-7, SHEET A7, WALL SECTION DETAILS 1B/A7

O. Detail 1B - Replace title, “AT GABLE ROOF EDGE”, with the following correct title name, “AT EAVE EDGE”.

P. Detail 1B - Add the following reference note for a Vent Baffle (not shown): “Provide and install

Vent Baffle continuous along eaves.”

ITEM NO. G-8, SHEET A7, WALL SECTION DETAIL 2B/A7

Q. Detail 2B - Add the following note: “Provide and install Damp-proofing to the exterior side of the foundation wall from the top of the footing up to finish grade (Typical)”.

ITEM NO. G-9, SHEET A8, INTERIOR ELEVATIONS SHEET NOTES

R. Note inside of box at lower right area of sheet – Revise note to read: “NOTE: ALL

APPLIANCES ARE GOVERNMENT-FURNISHED, AND SHALL BE INSTALLED BY

GENERAL CONTRACTOR”.

ITEM NO. G-10, SHEET A-10, DETAILS

S. Details 1, 2, 6, 7, 13, and 17 – Delete ½” and substitute 7/16” at wall sheathing note. Also see

Structural General Notes on Sheet S0 regarding wall sheathing: contractor may use either the specified 7/16” plywood or OSB. Where wall sheathing is referred to as “plywood,” it may also be OSB at the contractors’ prerogative.

ITEM NO. G-11, SHEET M1, CRAWL SPACE PLAN - PLUMBING

T. Add the following note to the Crawl Space Plumbing Plan 1/M1 regarding accommodating a dehumidifier at the crawl space: “General Contractor is to provide a clear area at the NW corner of the crawl space for a portable dehumidifier (NIC/will be provided by Govt) See Foundation Plan 1/A1’s reference note regarding recommended location for a condensate drain sleeve through the foundation’s wall”.

ITEM NO. G-12, SHEET E3, FLOOR PLAN - LIGHTING

U. Add the following note to the circle with F symbols that are located at center of Rms 205, 206, 207, and 208: “Horn Strobe Device” V. Delete circle with F symbol at center of Rooms 105, 106, 107, and 108

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