657A5-21-401 - ADDENDUM 1 - SUMMARY - 4 PAGES.pdf

08/20/2026

Construct New Campus Chiller Plant

Marion, IL

PROJECT NUMBER: 657A5-21-401

RFI RESPONSES, UPDATED DRAWINGS, AND SPECIFICATIONS

FOR ADDENDUM #1

REQUEST FOR INFORMATION

See RFI log attached.

DRAWING MODIFICATIONS

GI000:

1. MODIFY Sheet Index to include Revisions.

C210:

1. MODIFY site demolition keynote #7 to change existing chilled water supply and return line removal limits to new valve install location rather than back to the main line tie-in location.

C500:

1. ADD Site utility keynotes 19 and 20 to show installation of new valves on the proposed 12” ductile iron chilled water supply and return lines and on the existing chilled water supply and return lines to the current plant location. Valves are required on the existing lines to meet phasing requirements. Valves were added to the plan view with keynotes identifying their locations.

2. ADD Stationing for the proposed 12” chilled water lines.

C501:

1. ADD stationing for the proposed 12” chilled water lines, 8” storm line from Catch Basin 4 to the new plant, 12” storm line from Catch Basin 4 to Catch Basin 7, 6” sanitary line from the main line to the plant, and 4”/6” water line from the main line to the plant.

2. ADD a profile showing the vertical alignment of the 12” storm line from Catch Basins 0 to 5.

C502:

1. ADD New sheet added to the drawing set, including profiles for the proposed 12” chilled water lines, 8” storm line from Catch Basin 4 to the new plant, 12” storm line from Catch Basin 4 to Catch Basin 7, 6” sanitary line from the main line to the plant, and 4”/6” water line from the main line to the plant

AE102:

1 MODIFY Drawing Notes to reflect TPO roofing.

2 MODIFY General Notes to accurately point to AE401 and AE431 for roof details.

AE202:

1. MODIFY 2/AE202 Exterior Wall Panel Section (Typical) with updated dimensions to meet minimum wythe thickness requirement.

AE301:

1. MODIFY Drawing Notes to reflect TPO roof system.

2. MODIFY General Notes to reflect spray applied fireproofing on structural members only within the 2-hour rated Electrical Room.

AE310:

1. MODIFY precast insulated concrete wall panel profile in section.

S001:

1. MODIFY The drilled pier length to account for the socket in the Deep Foundations, Installation section of the general notes.

2. MODIFY The note in the Masonry Anchors, Testing section to include a qualified testing agency provided by the contractor.

SB101:

1. MODIFY The drilled pier length to 18’ plus the socket depth.

SF701:

1. MODIFY The lintel schedule to provide maximum lengths for L1 and update the sizes of L1 and L2.

M601:

1. MODIFY The electric unit heater schedule to show updated voltage.

MP201:

1. DELETE General Note B.

MP203:

1. MODIFY General Note B to only include heat trace on CDWS, CDWR, and EQ piping.

MP302:

1. MODIFY General Note C to only include heat trace on CDWS, CDWR, and EQ piping.

MP701:

1. MODIFY the Water-Cooled Chiller Schedule to include updated efficiency data for the chillers.

E001:

1. ADD a phasing plan for the required 12KV feeder work.

ES100:

1. MODIFY site plan to clarify the connection from Manhole No. 10 to the Building 7 transformer.

E500:

1. MODIFY motor starter schedule to update two motors that were originally showing a 0 load.

E600:

1. MODIFY luminaire schedule to add the pole catalog numbers for pole lights PL1–

PL4.

SPECIFICATION MODIFICATIONS

01 45 35 - SPECIAL INSPECTIONS:

1. ADD The Schedule of Special Inspections document to the specification.

2. ADD The Statement of Special Inspections document to the specification.

03 45 00 - PRECAST ARCHITECTURAL CONCRETE:

1. MODIFY Finish of precast architectural concrete panels to be 'As-Cast Surface Finish' (03 45 00 Section 3.7.A.1).

2. DELETE unused finish clauses.

07 42 13.02 – METAL WALL PANELS

1. DELETE Section 2.3.C referring to stainless steel panels.

2. MODIFY Section 2.1, removing irrelevant system descriptions.

3. MODIFY Section 2.4.D.2, correcting color to 179 Regal White.

07 81 00 – APPLIED FIREPROOFING

1. ADD Section 3.5.B and Section 1.1.B: Provide 2-hour spray-applied fire-resistive material (SFRM) only on structural steel members located within 2-hour rated rooms identified on the drawings, which is designed as a 2-hour fire-resistance–rated enclosure. Columns shall comply with UL N501.

Beams shall comply with UL N602. Where the rated enclosure includes the floor/ceiling assembly, apply SFRM per UL D902. Fireproofing is not required on structural steel outside this room.

23 64 00 - PACKAGED WATER CHILLERS:

1. DELETE Section 2.1.E related to required acoustic levels for centrifugal water-cooled chillers.

23 05 93 - TESTING, ADJUSTING, AND BALANCING FOR HVAC:

1. DELETE sound testing requirements.

23 65 00 - COOLING TOWERS:

1. MODIFY seismic and wind load requirements.

23 05 41 - NOISE AND VIBRATION CONTROL FOR HVAC:

1. DELETE sound testing requirements.

23 73 00 - INDOOR CENTRAL-STATION AIR-HANDLING UNITS:

1. MODIFY Section 2.1.F.3, fan motors to be ECMs with N-1 redundancy.

31 20 00 - EARTHWORK:

1. DELETE References to foundation systems not used on the project.

31 63 26 – DRILLED CAISSONS

1. MODIFY all sections regarding safety to reference Division 1 Specifications.

2. DELETE section requiring load testing of caissons.

- - - END OF ADDENDUM - - -