CoC_-RBAdd1 Combined.pdf
PDF 620 KB Posted
- Solicitation number
- 250701-1
- Issued by
- Montezuma County, Colorado
About this file
This document is Addendum #1 for the WTP Generator Addition and WTP Generator Addition & MCC Replacement project for the City of Craig, Colorado, prepared by SGM, Inc. The addendum, dated June 13, 2025, provides clarifications and revisions to the original bid documents, with a bid date of July 1, 2025. Key clarifications include confirmation that MCC 1 is fed underground, both facilities require selective coordination and arc flash analysis, and details about temporary generator requirements for the Wastewater Treatment Plant. The addendum specifies generator weights (DS1000 at 18,995 lbs and DS550 at 10,524-12,850 lbs) and provides lifting instructions for the generators.
The document includes technical revisions to WTP Sheet S401 to adjust door dimensions for the new MCC. Lifting instructions are provided with detailed safety warnings, emphasizing the use of all four lifting brackets/provisions and appropriately sized spreader bars. The addendum highlights critical safety considerations, such as not lifting the generator with fuel in the tank and ensuring all personnel stay clear during lifting operations. Attachments include lifting instructions for DS1000 and DS550 generators, as well as the revised WTP Sheet 401, providing additional technical guidance for bidders and installation teams.
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CoC_-RBAdd1
ADDENDUM ORDER
ORDER NO. 1
DATE: 06/13/25
BID DATE: 07/01/25
NAME OF PROJECT:
WTP Generator Addition and WTP Generator Addition & MCC
Replacement
OWNER: City of Craig
ENGINEER: SGM, Inc.
The following changes are hereby made to the CONTRACT DOCUMENTS:
Clarifications
1. Is MCC 1 fed underground?
a. Yes. The 4” overhead conduits are subpanel feeders.
b. When determining the layout of MCC-A and MCC-B, ground conduit positions were prioritized over overhead conduit positions to limit reconfiguration of ground fed conduit after replacement.
2. Do both facilities need selective coordination and arc flash analysis?
a. Yes.
3. What size temporary generator would be required at the Wastewater Treatment Plant?
a. The new permanent generator is sized to accommodate future upgrades, so a temporary generator could be smaller. Temporary generator selection should be submitted for approval prior to procurement.
b. A minimum temporary generator would need to support the following existing loads in the following steps:
i. Step One: a single 75 HP pump starting across the line, and ancillary loads supplied by a 15 kVA step down transformer.
ii. Step Two: a single 125 HP blower, started by an RVSS.
4. What are the lifting points for the generators?
a. See attached Lifting Instructions.
5. What is the weight of each generator?
a. DS1000– 18,995 lbs (Dry)
b. DS550 – 10,524 – 12,850 lbs (Dry)
Bid Document Revisions WTP Sheet S401- Reissued to revise door dimensions to fit new MCC.
ADDENDUM #1 ACKNOWLEDGED BY:
Name Date
PREPARED BY:
CoC_-RBAdd1
Elle Coe, E.I.
SGM
List of Attachments:
DS1000 Lifting Instructions DS550 Lifting Instructions WTP Sheet 401
LIFTING BRACKETS
LIFTING BRACKETS
SPREADER BARSPREADER BAR
SIDE VIEW
END VIEW
· TO LIFT THE GENERATOR SET, ALL (4) LIFTING BRACKETS MUST BE USED.
· THE LIFTING BRACKETS ARE THE ONLY APPROVED LIFTING METHOD. RIGGING EQUIPMENT SHOULD NEVER CONTACT THE GENERATOR
SET WHEN LIFTING.
· GENERATOR SET IS DESIGNED FOR LIFTING WITH THE USE OF APPROPRIATELY SIZED SPREADER BARS. LIFTING DEVICE ANGLE SHOULD
NEVER EXCEED VALUES INDICATED ABOVE.
· TO STABILIZE THE LOAD, ATTACH STABILIZERS AT THE LIFTING BRACKETS ONLY.
· ALL PERSONNEL SHOULD ALWAYS STAY CLEAR OF GENERATOR SET BEING LIFTED.
· DO NOT LIFT GENERATOR SET WITH FUEL TANK.
AS SHIPPED GENERATOR SET WEIGHT:_______________________________________________________________________________________LBS
P N
X
OPTIONAL ENCLOSUREOPTIONAL ENCLOSURE
FAILURE TO COMPLY WITH THESE LIFTING INSTRUCTIONS
MAY RESULT IN SERIOUS INJURY OR DEATH!
NOTES:
1) MATERIAL SPECIFICATION: .010” VELVET/ MATTE; UV ENHANCED POLYCARBONATE
LAMINATION (REF. BRANDS: BAYFOL UV-1 7-2; ROWTEC UV PC1-001-AM00 OR
EQUIVALENT)
2) ADHESIVE SPECIFICATION: 3M 9472, SPLIT BACK
3) DIMENSIONS: MM [IN]
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LIFTING PROVISIONS
LIFTING PROVISIONS
SPREADER BARSPREADER BAR
DIESEL FUEL
TANK
· TO LIFT THE GENERATOR SET, ALL (4) LIFTING PROVISIONS MUST BE USED.
· THE LIFTING PROVISIONS ARE THE ONLY APPROVED LIFTING METHOD. RIGGING EQUIPMENT SHOULD NEVER CONTACT THE
GENERATOR SET WHEN LIFTING.
· GENERATOR SET IS DESIGNED FOR LIFTING WITH THE USE OF APPROPRIATELY SIZED SPREADER BARS. LIFTING DEVICE ANGLE SHOULD
NEVER EXCEED VALUES INDICATED ABOVE.
· TO STABILIZE THE LOAD, ATTACH STABILIZERS AT THE LIFTING PROVISIONS ONLY.
· ALL PERSONNEL SHOULD ALWAYS STAY CLEAR OF GENERATOR SET BEING LIFTED.
· GENERATOR SET WITH SUB-BASE DIESEL FUEL TANKS INSTALLED AT MTU ONSITE ENERGY AND NOT EXCEEDING BASE FRAME
PERIMETER CAN BE LIFTED AS ONE FROM GENERATOR SET LIFTING POINTS.
· DO NOT LIFT GENERATOR SET WITH FUEL IN TANK.
AS SHIPPED GENERATOR SET WEIGHT:_______________________________________________________________________________________LBS
P N
X
OPTIONAL ENCLOSUREOPTIONAL ENCLOSURE
FAILURE TO COMPLY WITH THESE LIFTING INSTRUCTIONS
MAY RESULT IN SERIOUS INJURY OR DEATH!
NOTES:
1) MATERIAL SPECIFICATION: .010” VELVET/ MATTE; UV ENHANCED POLYCARBONATE
LAMINATION (REF. BRANDS: BAYFOL UV-1 7-2; ROWTEC UV PC1-001-AM00 OR
EQUIVALENT)
2) ADHESIVE SPECIFICATION: 3M 9472, SPLIT BACK
3) DIMENSIONS: MM [IN]
END VIEWSIDE VIEW
DIESEL FUEL
TANK
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MASONRY REPAIRS:
1.
2.
3.
1.
2.
REPAIR 1 - EXTERIOR FACE OF MASONRY
REPAIR REQUIRED FOR CMU EFFLORESCENCE LEADING TO MORTAR JOINT AND COATING DAMAGE.
REMOVE EXISTING EXTERIOR COATING AND ANY DEPOSIT STAINS WITH A WIRE BRUSH OR WHEEL FROM CMU WALLS. HIGH-PRESSURE WATER MUST BE TESTED IN A SMALL AREA APPROVED BY ENGINEER PRIOR TO USE ON
CMU.
REMOVE ALL LOOSE MATERIAL AND DEBRIS.
REPLACE MORTAR JOINTS AND CMU FACE SHELLS FOUND TO BE DAMAGED (MISSING MORE THAN 1/4" DEPTH)
AFTER CLEANING
MASONRY SHALL BE HOLLOW LIGHTWEIGHT CONCRETE MASONRY UNITS CONFORMING TO ASTM C90.
UNIT STRENGTH SHALL BE 1900 PSI. MASONRY BLOCK SIZE AND PATTERN SHALL MATCH EXISTING
MASONRY.
MORTAR SHALL CONFORM TO ASTM C270 AND SHALL BE TYPE S WITH A MINIMUM CUBE STRENGTH OF 1800 PSI. DO NOT USE MASONRY CEMENT OR ADMIXTURES UNLESS APPROVED BY THE STRUCTURAL
ENGINEER.
MORTAR JOINTS SHALL BE TOOLED TO MATCH EXISTING.
AFTER REPLACEMENT MORTAR HAS CURED, PROVIDE TWO (2) COATS PAINT TO ALL EXTERIOR EXPOSED
SURFACES OF CMU.
REMOVE OR PROTECT ANY ITEMS NOT TO BE PAINTED
COLOR TO MATCH EXISTING FROM MANUFACTURER'S STANDARD COLOR SELECTION.
1.
2.
REPAIR 2 - INTERIOR FACE OF MASONRY
REPAIR REQUIRED FOR CMU EFFLORESCENCE LEADING TO DEPOSITS.
REMOVE ANY DEPOSIT STAINS WITH A WIRE BRUSH OR WHEEL FROM CMU WALLS. HIGH-PRESSURE WATER
MUST BE TESTED IN A SMALL AREA APPROVED BY ENGINEER PRIOR TO USE ON CMU.
PROVIDE TWO (2) COATS PAINT TO INTERIOR SURFACE OF CMU WHERE DEPOSIT STAINS WERE REMOVED.
REMOVE OR PROTECT ANY ITEMS NOT TO BE PAINTED
COLOR TO MATCH EXISTING FROM MANUFACTURER'S STANDARD COLOR SELECTION.
1.
2.
3.
1.
2.
REPAIR 3 - MASONRY INFILL AT DEMOLISHED EQUIPMENT
REPAIR REQUIRED WHERE DEMOLISHED EQUIPMENT OPENINGS ARE REQUIRED TO BE SEALED. SEE ELECTRICAL
DEMOLITION PLANS.
PROVIDE CMU BLOCK AND MORTAR JOINT FOR LARGER OPENING INFILL. FOR OPENINGS LESS THAN 8", PROVIDE
NEW CMU FACE SHELL.
MASONRY SHALL BE HOLLOW LIGHTWEIGHT CONCRETE MASONRY UNITS CONFORMING TO ASTM C90.
UNIT STRENGTH SHALL BE 1900 PSI. MASONRY BLOCK SIZE AND PATTERN SHALL MATCH EXISTING
MASONRY.
MORTAR SHALL CONFORM TO ASTM C270 AND SHALL BE TYPE S WITH A MINIMUM CUBE STRENGTH OF 1800 PSI. DO NOT USE MASONRY CEMENT OR ADMIXTURES UNLESS APPROVED BY THE STRUCTURAL
ENGINEER.
MORTAR JOINTS SHALL BE TOOLED TO MATCH EXISTING.
AFTER REPLACEMENT UNITS AND MORTAR HAS CURED, PROVIDE TWO (2) COATS PAINT EXTERIOR AND INTERIOR
SURFACES OF CMU INFILL.
REMOVE OR PROTECT ANY ITEMS NOT TO BE PAINTED
COLOR TO MATCH EXISTING FROM MANUFACTURER'S STANDARD COLOR SELECTION.
M
AS
O N
R Y
W
AL
L
" x
'-4
MASONRY WALL
19' - 8" x 9'-4" +/-
2' - 0"
OPENING
5' - 0" x 5'-0" +/- 2' - 0"
3 ABOVE
OPENING
MASONRY WALL
93' - 4" x 10'-0" +/-
MASONRY WALL
21' - 4" x 12'-8" +/-
M
AS
O N
R Y
W
AL
L
" x
0' -0
114' - 8" +/-
EXISTING WINDOWS (TYP) EXISTING GARAGE DOOR
S401
REMOVE EXISTING STEEL DOOR
INCREASE OPENING HEIGHT BY 8"
[VERIFY W/ EQUIPMENT]
PROVIDE NEW STEEL DOOR &
HARDWARE FOR ENLARGED OPENING
PAINT FINISH
COLOR TO MATCH EXISTING FROM
MANUFACTURER'S STANDARD COLOR
SELECTION
ABOVE
OPENING
1.
2.
NOTES:
WORK SHALL BE PERFORMED BY A COMPETENT CONTRACTOR
FAMILIAR WITH STRUCTURAL DEMOLITION AND SHORING WORK.
CONTRACTOR TO VERIFY ROUGH OPENING SIZE REQUIREMENTS
PRIOR TO MASONRY REMOVAL.
1.
2.
3.
4.
INSTALLATION SEQUENCE:
SAWCUT MASONRY JOINT AT TOP OF OPENING AND INSTALL ANGLES
WITH LONG LEG VERTICAL EACH SIDE OF WALL. ENSURE ANGLES ARE
TIGHT AND HAVE 6" MIN BEARING BEYOND OPENING.
BOLT THRU WALL AND ANGLES WITH 1/2"∅ BOLTS AT 18" ON-CENTER
(OR MINIMUM 3 BOLTS).
SAWCUT AND REMOVE MASONRY FOR PROPOSED OPENING.
WELD ⅊ - 1/4" TO BOTTOM OF ANGLES.
6"
OPENING WIDTH
6' - 0" (MAX) 6"
1/2" 1/2"
ELEVATION
EXISTING 8" CMU WALL
CONTINUOUS SEALANT
EACH FACE
2"
PAINT FINISH EACH FACE
3/16 2@12
TO ANGLE
⅊ - 1/4"
WIDTH = NOMINAL CMU WIDTH - 1"
LENGTH = OPENING WIDTH - 1"
SECTION
1/2"∅ THRU BOLT
@ 18" o.c.
(3 BOLTS MINIMUM)
ANGLE
6 x 3 1/2 x 5/16 LLV
EACH FACE
NOT FOR
CONSTRUCTION
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File details come from the government source that posted it. Updated .