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Viewing inquiries for 01-0F7604

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Inquiry #1: Reference specification 99-074113.16; 2.2.B.2.a specifies a nominal metal thickness of 0.028 inch, which is 21 ga.
Q- Is 22 ga acceptable for the standing seam metal roof panels?

Reference specification 99-074113.16; 2.4.B. specifies a nominal metal thickness same as material on metal panels.
Q - 22 ga trim is uncommon, will 24 ga be acceptable for the trim?

Reference specification 99-074213.13; 2.2. A&B seem to contradict each other
Q - Are the wall panels to be through panel fastening or concealed fastener?

Reference specification 99-074213.13; 2.2.B.1.a - you are asking for .0336 nominal thickness for the metal gauge. This is about 19.5 ga.
Q - 20 gauge is uncommon for a wall panel, will 22ga or 24ga work for the siding

Reference specification 99-074213.19.2.2.B.2. This spec is also calling out 19.5 gauge.
Q - Again, 20 gauge is uncommon for a wall panel. Will 22ga or 24ga work for the insulated wall panels?
Q - Typically the interior skin of an insulated wall panel is a lesser gauge then the exterior skin. This is not defined in the specs, please clarify.

Reference specification 99-074293.2.2.C.2. This spec is calling for the same materials "as the metal wall and roof panels". The specs differ for the single skin wall and roof panels.
Q - Will 24 ga metal be acceptable for the soffit panels as perforated in heavier ga is not readily available.
Inquiry submitted 11/23/2022

Response #1:(BI#1)-Your inquiry has been received and is being reviewed.

Response posted 11/29/2022


Response #2:(BI#1)-1. Verify your stated gauge for the metal thickness and materials in the specifications. Please bid per the current contract documents.
2. Verify your stated gauge for the metal thickness and materials in the specifications. Please bid per the current contract documents.
3. Use concealed fasteners per specifications.
4. Verify your stated gauge for the metal thickness and materials in the specifications. Please bid per the current contract documents.
5. Verify your stated gauge for the metal thickness and materials in the specifications. Please bid per the current contract documents.
6. Refer to 2.2B.2 in section 99-074213.19 for metal thickness, for both.
7. Match the metal thickness in 2.2B.3 in section 99-074293, for perforated soffit panels.

Response posted 12/12/2022



Inquiry #2: I was wondering if there was a Single Line Drawing for this project?
• What is the voltage requirement for the generator set? 480V , 240V , 208V?
• What is the Amperage requirement of the Automatic Transfer Switche(s)? How many transfer switches are required? Will the transfer switches be located inside or outside?


Inquiry submitted 12/14/2022

Response #1:(BI#2)-Your inquiry has been received and is being reviewed.
Response posted 12/14/2022


Response #2:(BI#2)-Structure’s response:
•The modified single line diagram can be found on plan sheet EE0-40.
•Plan sheet EE0-40 describes the voltage requirements for the generator.
•Amperage requirements for the automatic transfer switch is shown on plan sheet EE0-40 and the location is shown on plan sheet EE2-10.

Response posted 12/20/2022



Inquiry #3: Specifications mention Tier 3 and Tier 4 compliance for the Genset. Can you clarify.
Section: 99-26816
Part 2. Products
2.1 C. Tier 3 is mentioned.
Part 3. Execution
3.4 D.8 Tier 4 final is mentioned.
Inquiry submitted 12/22/2022

Response #1:(BI#3)-Your inquiry has been received and is being reviewed.
Response posted 12/22/2022


Response #2:(BI#3)-The generator set must be Tier 4 Final per California EPA regulations.
Response posted 12/23/2022


Response #3:(BI#3)-The generator set must be Tier 4 Final per California EPA regulations.
Response posted 12/23/2022



Inquiry #4: Do you have specification section for the new 50,000 gallon Fire Water Tank described on drawings F0-01 thru F5-01?
Inquiry submitted 12/28/2022

Response #1:(BI#4)-Structure’s response: Refer to NFPA 22 as referenced on plan sheet F0-01, NFPA 22 5.1.3.1 as referenced on plan sheet F0-02, and details on plan sheet F4-01.
Response posted 01/03/2023



Inquiry #5: Our search for a Genset to meet Tier 4 is unfruitful. CAT and Cummins do not make a Tier 4 in this size. Kohler is searching.
Our conversation with the AQMD reveals emissions allowed are per the chart linked ( ATCM )and are particulte emissions derived. Not Tier labels.
Cat and Cummins both meet the requirements mentioned with their Tier 3 units in the chart mentioned below.

Please see the following email from AQMD:
Ron,
From the sound of it, the Airborne Toxic Control Measure (ATCM) for Stationary Diesel Engines applies to the proposed CalTrans project. For new installations of devices rated at greater than 50 horsepower AND used exclusively in the role of emergency standby (back-up), the emission standards are listed in Table 1 found on page 20.

In our call, I mentioned Table 3 based on the discussions I'd had previously with Micheal Heath of Peterson. Table 3 lists the standards for devices that are "in-use" engines. The CalTrans project involves new construction and so Table 1 is appropriate.

Please reply so that I may confirm receipt.
Jason L. Davis
Deputy Air Pollution Control Officer
Permitting & Planning Division Manager
North Coast Unified AQMD
707 L Street, Eureka CA 95501
Office (707) 443-3093 x 114
www.ncuaqmd.org

Comment from Cat:
Seems that way. We’ve had a few customers asking for more stringent emissions since things are heading that way, but currently it is not a requirement for these emergency standby generators and it adds cost to their project both up front, and long term because of increased maintenance and complexity.
Tier 4F is required for on-road trucks, portable generators, and generators that provide primary power (i.e. not emergency/standby), and in the Bay Area, for any generator 1000 bhp or greater (for us, 700kW and up).

Our genset meets these table 1 requirements straight from the factory (it’s a 161 bhp engine).

Michael Heath
Sales Engineer
Peterson Power Systems, Inc.
C: 510.375.0750
www.petersonpower.com
“We Partner with our Customers to Build a Better Future”

From Cummins:
It doesn’t appear that the AQMD regulations have changed recently. Our generator 100 KW diesel does comply with the emission limits mention on table 1 of page 20.
Hi Ron,
With regards to the engineer’s statement below, please note that we are not aware of any such regulation from the EPA. Throughout 2022, we have sold many tier 2 and tier 3 generators in California without any issues with the exception of the San Joaquin Valley Air Pollution Control District (SJVAPCD). The SJVAPCD is the only air district in CA that requires tier 4 for all diesel Generators over 50 HP. There are a couple other air districts that requires it for generator over 1,000 horse Power (600 KW and higher). Please ask the engineer where find this California EPA regulation since we are not aware of it and have sold many tier 2 and tier 3 unit in California throughout 2022

Cordell Samai
Inside Sales Representative- Western US
Power Generation Sales
916-376-1532
Cordell.Samai@cummins.com

In summation: Their certainly appears to be a differing level of what is acceptable to the AQMD and with what Cal Trans is wanting.




Inquiry submitted 01/02/2023

Response #1:(BI#5)-Your inquiry has been received and is being reviewed.
Response posted 01/03/2023


Response #2:(BI#5)-Structure’s response: Please see the response to bidder inquiry No. 3 and section 99-263213 Diesel Engine Driven Generator Set for the requirements of the generator. Please submit as detailed in part 1.4 the product data for approval. Please see section 6-1.05 regarding substitution requests. Please bid per the current contract documents
Response posted 01/03/2023



Inquiry #6: The specs call for the overhead door to be "capable of operating for not less than 500,000 [cycles]." This is not possible. 20,000 cycles is standard, 50,000 is a lot, and 100,000 is the maximum possible.
Inquiry submitted 01/03/2023

Response #1:(BI#6)-Your inquiry has been received and is being reviewed.
Response posted 01/03/2023


Response #2:(BI#06)-Structure's response: Please see the section 99-083323 for the requirements for the overhead coiling doors. Please bid per the current contract documents.
Response posted 01/04/2023



Inquiry #7: 1) WHO IS TO SUPPLY NEW 5000 gl> FIRE HOLDING TANK?
2) STATED THE FIRE SUPPRESSION SUPPLY LINE 6" IS DEDICATED, FROM WHAT SOURCE, NEW HOLDING TANK LOCATION?
3) DEMO: WHAT DEPTH DO ASBILTS SHOW EXISTING UTILITIES?
STATED REMOVE ALL ABANDONED UTILITIES?
4) THERE IS NO CLEAR INDICATION ON WHAT CAL-TRANS IS SUPPLING.
EXAMPLE FURNISHINGS, COMPUTERS, PHONE SYSTEM. PLEASE CLARIFY.
I UNDERSTAND WE INSTALL.
THANK YOU FOR YOUR TIME>
WCC..

Inquiry submitted 01/04/2023

Response #1:(BI#7)-Your inquiry has been received and is being reviewed.
Response posted 01/04/2023


Response #2:(BI#7)-
Structure’s response:
1.Please see plan sheet F0-02 for the tank size. Please see section 99-011000, part 1.3 for work covered by the contract documents. Please bid per the current contract documents.
2.Please see F5-01 for the fire water piping. Please bid per the current contract documents.
3.The District will need to respond to this questions. The utility and potholing information is shown on their utility sheets.
4.There are no department furnished items for this project that the contractor will need to install. Department furnished items would be listed in section 6-1.02. The furniture shown on A1-00 has been labeled not in contract. Please bid per the current contract documents.

Response posted 01/05/2023


Response #3:(BI#7)-See Plan Sheet U-1 Utility Plans for depths of utilities at potholing locations. Refer to the Standard Specifications 5-1.36C Nonhighway Facilities. The Contractor is require to positively locate underground infrastructure in the field before starting work. As-built plans of the existing building constructed in 1972 are available to the Contractor upon request. The “Plot Plan” sheet in the as-built plans does not reference depths or elevations of utilities.

Pacific Power and Light will remove existing electrical service lines and install the new service near the beginning of construction with coordination through Caltrans.

Response posted 01/11/2023



Inquiry #8: Can you confirm that this provision will not be required on this project. This project has a Bid Book date of 11-14-2022.

Caltrans will apply the new Buy America requirements to projects effective November 10, 2022. Most projects advertised on the Contractor's Corner as of November 10, 2022, will include Section 6-1.04, "Buy America," in the Special Provisions. We expect for projects being advertised at end November 2022 to contain SSP 6-1.04.
Inquiry submitted 01/05/2023

Response #1:(BI#8)-Your inquiry has been received and is being reviewed.
Response posted 01/06/2023


Response #2:(BI#8)-The new Buy America requirements do not apply to this project. Bid per contract documents.
Response posted 01/09/2023



Inquiry #9: We are getting conflicting details about the IMP:
"We can get all metal in 22 ga, but none of the design manufacturers have indicated that they can roll 20 ga into the contours required for this type of tongue and groove panel."
How can we meet spec?



Inquiry submitted 01/05/2023

Response #1:(BI#9)-Your inquiry has been received and is being reviewed.
Response posted 01/06/2023


Response #2:(BI#9)-Structure’s response: Please verify your stated gauge for the metal thickness and materials in the specifications. Please see the responses to bidder inquiry #1.
Response posted 01/10/2023



Inquiry #10: Regarding the Genset.
Cal Trans response posted as follows .
1. Please submit as detailed in part 1.4 the product data for approval.
2. Please see section 6-1.05 regarding substitution requests.
3. Please bid per the current contract documents.

Contractors response"
1- OK. We can show the worthiness of the proposed supplied Genset.
2. Why would Cal Trans already ask for a substitute for an item called out in the specifications? It is not a Brand issue.
3. The specifications are not biddable.
Inquiry submitted 01/05/2023

Response #1:(BI#10)-Your inquiry has been received and is being reviewed.
Response posted 01/06/2023


Response #2:(BI#10)-Structure’s Response: Generator set must comply with EPA tier regulations and requirements by the local Air Quality Management District or other regulatory agencies having jurisdictions.
Response posted 01/11/2023



Inquiry #11: Sheet 175 of 194 has a note regarding Fire Tank.
" 2. Due to low temperatures either a re-circulation pump or a tank heater will be required. Temperature shall remain at or above 42 degrees."
We see nothing in the Electrical plans to support this. Or anywhere.
Please review this and clarify what system is needed. This is a lot of water to keep above 42 degrees.

Inquiry submitted 01/10/2023

Response #1:(BI#11)-Your inquiry has been received and is being reviewed.
Response posted 01/10/2023


Response #2:(BI#11)-Structure’s response: Follow plan sheet 175 and refer to NPFA 22 for requirements. Please bid per the current contract documents.
Response posted 01/10/2023



Inquiry #12: For Access control and auto gate:
Is there a specific operator or brand to be used?
How will the facility be accessed? Card reader? Keypad?
Is the access control monitored by the security system?
Do we need a 7 day timer?

Inquiry submitted 01/10/2023

Response #1:(BI#12)-Your inquiry has been received and is being reviewed.
Response posted 01/10/2023


Response #2:(BI#12)-Bid per plans and specifications. See Plan sheets C-13, EE1-00, and FP
• There is no brand or specific operator identified
• Key pad is identified on EE1-00
• There is no security system identified to monitor the WWS-8 access control gates.


Response posted 01/10/2023

The information provided in the responses to bidder inquiries is not a waiver of Section 2-1.07, "JOB SITE AND DOCUMENT EXAMINATION" of the Standard Specifications or any other provision of the contract, nor to excuse the contractor from full compliance with the contract. Bidders are cautioned that subsequent responses or contract addenda may change a previous response.