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Viewing inquiries for 04-2Q5704

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Inquiry #1: When is the anticipated start date or Notice to proceed date for this project?
Inquiry submitted 12/19/2023

Response #1:The inquiry has been received and submitted for consideration.
Response posted 12/19/2023


Response #2:See special provision 8-1.04C for start date for job site activities.
Response posted 12/20/2023



Inquiry #2: Has CalTrans performed any analysis on the DBE achievement potential for this project? Typically CalTrans does a breakdown of work items that could be subcontracted out to determine the DBE goal. This project is primarily an electro-mechanical job with one significant subcontractor, the electricidal sub (no electrical DBEs will bid this job) AND consequently it will be virtually impossible to achieve the DBE goal of 22%. Please revise the goal to a more realistic level.
Inquiry submitted 12/20/2023

Response #1:The inquiry has been received and submitted for consideration.
Response posted 12/20/2023


Response #2:Caltrans Office of Civil Right did goal setting analyses for this project. The goal set for this project is 19%. In addition, per the analyses there are sufficient subcontractors to achieve the set goal for this project.
Response posted 12/27/2023



Inquiry #3: The special provisions provide ramp closures at 680 & Alum Rock; however, there is no chart for lane closures during the day.

Since the existing loop on-ramp from Alum Rock to SB 680 begins at one lane, widens to two lanes, then narrows to one lane, may the contractor close a single lane of this on-ramp and provide at least one eleven foot lane to traffic during daytime and nighttime hours?

Similarly, the Hwy 680 SB offramp at Alum Rock starts at one lane and widens to multiple lanes. May one lane of the SB 680 off-ramp to Alum Rock be closed and provide at least one eleven foot lane to traffic during daytime and nighttime hours?
Inquiry submitted 12/20/2023

Response #1:The inquiry has been received and submitted for consideration.
Response posted 12/20/2023


Response #2:Partial ramp closures are not allowed. Bidders are reminded that there may be work performed outside the travel way during the daytime provided traffic handling plans are approved by the RE. Please bid per current contract documents.
Response posted 01/05/2024



Inquiry #4: Under what Bid Item is the Storage Box A and B being paid for?
Inquiry submitted 12/20/2023

Response #1:The inquiry has been received and submitted for consideration.
Response posted 12/20/2023


Response #2:The work for Storage Boxes A and B shown on the ST sheets is paid for under the Building Work bid item. Reference Section 99-010000, 1.1 SUMMARY of the Special Provisions. Please bid per the current contract documents.
Response posted 12/21/2023



Inquiry #5: Please indicate the inside cell dimensions of the RCBs (Reinforced Concrete Boxes) at both Storage Box A and B so it is clear and concise for all bidders.
Inquiry submitted 12/20/2023

Response #1:The inquiry has been received and submitted for consideration.
Response posted 12/20/2023


Response #2:Refer to the referenced Standard Plan D81 for inside cell dimensions of Storage Boxes A and B. Please bid per the current contract documents.
Response posted 12/21/2023



Inquiry #6: Please indicate if there is sufficient time within the allowable working days of the contract for the awarded Contractor to submit for permits to agencies having jurisdiction, receive permit approvals, and also perform all construction
Inquiry submitted 12/20/2023

Response #1:The inquiry has been received and submitted for consideration.
Response posted 12/21/2023


Response #2:See the Special Provision 8-1.04C for Delayed Start.
Response posted 12/21/2023



Inquiry #7: Please confirm that the Owner has allocated sufficient time for the awarded Contractor to submit for Permits to Agencies Having Jurisdiction, Receive All Permits, and subsequently begin and complete the designed scopes of work within the allocated contract time.
Inquiry submitted 12/20/2023

Response #1:The inquiry has been received and submitted for consideration.
Response posted 12/21/2023


Response #2:See the Special Provision 8-1.04C for Delayed Start.
Response posted 12/21/2023



Inquiry #8: There is both (N) work shown to be performed within the limits of the THVF and also Contract access to various portions of the THVF. Please confirm that the THVF may be relocated as needed to permit all access and construction activities.

Inquiry submitted 12/20/2023

Response #1:The inquiry has been received and submitted for consideration.
Response posted 12/21/2023


Response #2: The purpose of THVF is to protect existing trees. The THVF can be relocated as needed by the direction of engineer.

Response posted 12/22/2023


Response #3:The purpose of THVF is to protect existing trees and vegetation. The THVF may be relocated for some activities at the discretion of the Engineer.
Response posted 12/29/2023



Inquiry #9: Alum Rock site calls for the destruction of 2 existing wells ... but Contractor would need information on the size and depth of the well to determine the cost of this and I can't locate that anywhere in plans, specs or IH. CalTrans obviously needs to provide this information to Contractors.
Inquiry submitted 12/21/2023

Response #1:The inquiry has been received and submitted for consideration.
Response posted 12/21/2023


Response #2:Refer to the Foundation Report in the IH and Log of Test Boring # RC-21-001 and RC-21-002 on Sheets 44 & 45 in the contract plans.
Response posted 12/27/2023



Inquiry #10: Info Handout indicates an extremely high water table at the Alum Rock site, at or near ground surface. Furthermore, the groundwater report indicates contamination of the groundwater (above both ESLs and MCL Priority for exposure to human health). Contractor will need to filter/process the groundwater and then pump into City sewer system. This reflects an extensive amount of pumping. Please confirm that CalTrans (as project Owner) has coordinated this with City and Contractor can expect to dispose of treated water in the local sewer.
Inquiry submitted 12/21/2023

Response #1:The inquiry has been received and submitted for consideration.
Response posted 12/21/2023


Response #2:Permits to discharge to a POTW are always obtained by the contractor during construction. Please refer to the Special Provisions section 13-14.01A.
Response posted 12/29/2023



Inquiry #11: ST1-4 and ST1-5 indicate an over excavation of 2' at base of storage box. Considering the marshy/boggy existing conditions of the center of on-ramp clover, please indicate what type of aggregate contractor is expected to install in this over-excavation zone.
Inquiry submitted 12/21/2023

Response #1:The inquiry has been received and submitted for consideration.
Response posted 12/21/2023


Response #2:Over-excavation area must be replaced with structure backfill as shown on plans. Refer to specifications section 99-02220 EARTHWORK FOR BUILDING WORK for structure backfill material.
Response posted 12/22/2023



Inquiry #12: L-1 indicates the THVF delineating the environmental ESA zone. The THVF abuts the new storage Box A. This means the Contractor is expected to shore the Storage Box excavation? Obviously this extensive shoring adds considerable cost to the project. Please confirm CalTrans Engineer's Estimate anticipates this considerable cost.
Inquiry submitted 12/21/2023

Response #1:The inquiry has been received and submitted for consideration.
Response posted 12/21/2023


Response #2:Due to conditions and restrictions of the site and nature of work, shoring is anticipated. Please bid per the current contract documents.
Response posted 12/29/2023



Inquiry #13: I'd like to strongly second Bidder Inquiry #3's suggestion that the inside lane of the SB On-Ramp at Alum Rock (two lanes) be closed during daytime hours. Under the current conditions, Contractor would be limited to 6 hour work windows ... at night ... to perform all the Storage Box A earth and shoring work, this is entirely unrealistic. Please revise TH-2 accordingly.


Inquiry submitted 12/21/2023

Response #1:The inquiry has been received and submitted for consideration.
Response posted 12/21/2023


Response #2:Partial ramp closures are not allowed. Bidders are reminded that there may be work performed outside the travel way during the daytime provided traffic handling plans are approved by the RE. Please bid per current contract documents.
Response posted 01/05/2024



Inquiry #14: Can yo please confirm which dimensions in the chart on Standard Plan D-81 you'd like us to use for Box A and Box B? For example, the height of Box A shown on Sheet ST1-2 is 8'-1/2", would us like us to round up and use the 9' height column? Also, please confirm 10' max cover should be used and 12' span width.

It is common, for example on Caltrans retaining walls, for the designer to specify the Design H he or she is expecting us to use.

thanks.


Inquiry submitted 12/22/2023

Response #1:The inquiry has been received and submitted for consideration.
Response posted 12/22/2023


Response #2:The height of Storage Boxes A and B must be as shown on the ST sheets. Reference sheet G-1 Contour Grading for earth cover. For reinforcement and section thicknesses, refer to Standard Plan D81 using the indicated span, height and cover in Note 3 under Pumping Plant Design Notes on sheet ST1-0.
Response posted 12/22/2023



Inquiry #15: Is the reinforced 8" "normal concrete fill" slab in Storage Box A, shown for example on Sheet ST1-3, to be:
a. 3,600 psi concrete?
b. To be placed as a separate pour from the box invert pour?

Can the 6" optional starter wall shown on Standard Plan D-81 be increased to 8" in order to match the 8" "normal concrete fill" slab?
Inquiry submitted 12/22/2023

Response #1:The inquiry has been received and submitted for consideration.
Response posted 12/22/2023


Response #2:First part of your question:

a. Yes
b. Yes

Second part of your question:

No. Please bid per the current contract documents.
Response posted 12/27/2023



Inquiry #16: Per section 74-1.01C Maintenance Plan of the standard specifications requires bypass pumping equipment to be setup when taking pump plants offline. Please confirm that CalTrans requires temporary standby pumps for this project.


Inquiry submitted 12/26/2023

Response #1:The inquiry has been received and submitted for consideration.
Response posted 12/27/2023


Response #2:Section 74-1.01C Maintenance Plan references section 74-1.03E of the Standard Specifications. Section 74-1.03E lists auxiliary pumping system as an option for maintaining total pumping capacity.
Response posted 12/28/2023



Inquiry #17: Special Provisions addition, Section 74-1.01D(2)(c) states that "Performance test must show that each installed drainage pump complies with at least (1) 95 percent of the factory certified performance curve and (2) the design pump rates shown."

The following appurtenances seems to be lacking from the designed discharge system to properly test the pumps per the above:
a) a throttling valve on the discharge side of each pump to simulate head pressure ,
b) a pressure gauge between the throttling valve and the pump discharge to read pressure
c) a flow meter on each pump to measure flow

Please explain how contractors are to test in accordance with specification without the items lacking in design to facilitate testing?
Inquiry submitted 12/26/2023

Response #1:The inquiry has been received and submitted for consideration.
Response posted 12/27/2023


Response #2:a) Section 74-1.01D of the Standard Specifications details requirements for testing. Head pressure is obtained and accounted for within these provisions.
b) See a) response.
c) Section 74-1.01D of the Standard Specifications details requirements for testing. If the contractor wishes to use a flow meter to meet testing requirements, the flow meter and corresponding details must be submitted for approval as part of the testing work plan.

Response posted 12/28/2023



Inquiry #18: M2-6 and M3-5 indicate that concrete pedestals are to be installed per manufacturer's design. No pump manufacturer designs concrete pump pedestals, this is always the responsibility of the Engineer of Record. Per our previous CalTrans pump station work, CalTrans always designs these pedestals and provides details within Contract docs. Please maintain consistency and provide concrete pedestal design.
Inquiry submitted 12/26/2023

Response #1:The inquiry has been received and submitted for consideration.
Response posted 12/27/2023


Response #2:Contractor is required to provide the engineered design of the pump pedestals as per section 74-2.02B(2)(a) of the specifications. Submit shop drawings for approval.
Response posted 12/28/2023



Inquiry #19: Q-1 is indicating 445 CY of Embankment (not a paid bid item) AND 414 CY of Import Borrow (unit price bid item). Please indicate the distinction between the Embankment and the Import Borrow at the Storage Boxes as it is not apparent to bidders.
Inquiry submitted 12/27/2023

Response #1:The inquiry has been received and submitted for consideration.
Response posted 12/28/2023


Response #2:Refer to section 99-02220 EARTHWORK FOR BUILDING WORK of the Special Provisions for earthwork at storage boxes. Embankment and imported borrow quantities are related to roadway work. Earthwork at storage boxes is included in the building work.
Response posted 12/28/2023



Inquiry #20: I'll rephrase my question to Inquiry #19 as it was responded with a non-answer:

Q-1 is indicating 445 CY of Embankment (not a paid bid item) AND 414 CY of Import Borrow (unit price bid item). Please indicate the distinction between the Embankment and the Import Borrow as part of the ROADWAY WORK as currently it is not apparent to bidders.
Inquiry submitted 12/28/2023

Response #1:The inquiry has been received and submitted for consideration.
Response posted 12/28/2023


Response #2:Please refer to Standard specifications sections 19-2.04 and 19-7.04 for earthwork payment clauses.
Response posted 12/29/2023



Inquiry #21: Does Caltrans have a location for excess spoils from Box A & B excavation to be dumped?
Inquiry submitted 12/29/2023

Response #1:The inquiry has been received and submitted for consideration.
Response posted 12/29/2023


Response #2:No, there is no location to dump.
Response posted 12/29/2023



Inquiry #22: Please confirm if structure backfill is required to backfill over the tops of Box A and B up to original grade.
Inquiry submitted 12/29/2023

Response #1:The inquiry has been received and submitted for consideration.
Response posted 12/29/2023


Response #2:Structure backfill is required up to finish grade. Sheets ST1-2 through ST1-5 show the limits of structure excavation and backfill. Refer to sheet G-1 Contour Grading for finish grade. Please bid per the current contract documents.
Response posted 12/29/2023



Inquiry #23: It's customary for CalTrans to provide a quantified schedule of trees (categorized by approx diameter) to be removed from the site. It is evident that there is a significant amount of tree removal on this project and yet Engineer has not quantified it via a tree removal schedule... even though I highly doubt that Engineer will provide a tree removal schedule (judging by responses to prior inquiries), I feel obligated to request it all the same.


Inquiry submitted 12/29/2023

Response #1:The inquiry has been received and submitted for consideration.
Response posted 12/29/2023


Response #2:Existing tree and vegetation removal per Standard Specifications, Section 17, Clearing and Grubbing.
Response posted 01/02/2024



Inquiry #24: It's customary for CalTrans to provide a quantified schedule of trees (categorized by approx diameter) to be removed from the site. It is evident that there is a significant amount of tree removal on this project and yet Engineer has not quantified it via a tree removal schedule... even though I highly doubt that Engineer will provide a tree removal schedule (judging by responses to prior inquiries), I feel obligated to request it all the same.


Inquiry submitted 12/29/2023

Response #1:The inquiry has been received and submitted for consideration.
Response posted 12/29/2023


Response #2:Please see response for BI #23.
Response posted 01/02/2024



Inquiry #25: Please indicate where the work for Bid Item 46 (Sand Backfill) is taking place. In simplest terms ... where is the sand backfill being placed?
Inquiry submitted 12/29/2023

Response #1:The inquiry has been received and submitted for consideration.
Response posted 12/29/2023


Response #2:Please refer to the Special Provisions 71-6.03 and contract plan DQ-1 sheet.
Response posted 12/29/2023



Inquiry #26: Please provide a manufacturer for the Type 15TS Area Light Luminaire and Pole shown on EE3-3/EE4-2
Inquiry submitted 01/02/2024

Response #1:The inquiry has been received and submitted for consideration.
Response posted 01/02/2024


Response #2:No manufacturer is specified. Reference section 74-3.02G of the Special Provisions for exterior light poles and fixtures. Please bid per the current contract documents.
Response posted 01/03/2024



Inquiry #27: Drawing EE3-5, Note 22 call for a New Storage Box Light Fixture to be installed within 1'-0" max from ladder, but does not show a new light on the drawing or provide details. Please indicate luminaire type and mounting type for the new storage box light fixture.
Inquiry submitted 01/02/2024

Response #1:The inquiry has been received and submitted for consideration.
Response posted 01/02/2024


Response #2:Please refer to “Sump light” in section 74-3.02G of the Special Provisions for the new storage box light fixture depicted in detail B on plan sheet EE3-6 (notes 3 and 4), which is also associated with note 22 on sheet EE3-5.
Response posted 01/04/2024



Inquiry #28: Please indicate where the work for Bid Item 26 (Import Borrow ) is taking place. In simplest terms ... where exactly is the Import Borrow being placed?
Inquiry submitted 01/02/2024

Response #1:The inquiry has been received and submitted for consideration.
Response posted 01/02/2024


Response #2:Please refer to contract plans X-1 and Q-1 sheets.
Response posted 01/03/2024



Inquiry #29: Drawing EE2-4, Note 6
Drawing EE3-4, Note 12

Are the ROOM LIGHTS shown as being removed to be replaced with new? If so, please provide manufacture/luminaire type.
Inquiry submitted 01/02/2024

Response #1:The inquiry has been received and submitted for consideration.
Response posted 01/02/2024


Response #2:The room (top landing ceiling) lights shown in detail B on plan sheets EE2-4 and EE3-4 are to be removed, and new lights are to be installed as shown on sheets EE2-5 and EE3-5. Please refer to “Room light” in section 74-3.02G of the Special Provisions for room (top landing ceiling) lights in detail B on sheets EE2-5 and EE3-5.
Response posted 01/04/2024



Inquiry #30: Are the Doorway Overhead Lights shown on EE2-5 and EE3-5 existing? If they are to be replaced, please provide manufacturer/luminaire type.
Inquiry submitted 01/02/2024

Response #1:The inquiry has been received and submitted for consideration.
Response posted 01/02/2024


Response #2:Please refer to “Entry lights” in section 74-3.02G of the Standard Specifications for the doorway overhead lights shown on plan sheets EE2-5 and EE3-5 which are new.
Response posted 01/04/2024



Inquiry #31: Please clarify if Sheet Waterproofing, as described in Section 99-07115, will be required at the Storage Box structures. Details of the storage box structures only indicate Water Stop, Detail 3/ST1-9, at perimeter construction joints.
Inquiry submitted 01/03/2024

Response #1:The inquiry has been received and submitted for consideration.
Response posted 01/03/2024


Response #2:Sheet waterproofing, as shown in detail 3/ST1-9 and described in section 99-07115, is required at construction joints where waterstop is referenced.
Response posted 01/03/2024



Inquiry #32: Please clarify if the footing for Box A, as drawn on Sheet ST1-2 extends beyond the 80'x84' limits of the box? If so, please provide a detail with dimensions, this does not appear to be covered by Standard Plan D-81.
Inquiry submitted 01/03/2024

Response #1:The inquiry has been received and submitted for consideration.
Response posted 01/03/2024


Response #2:The base of Storage Box A extends 1 foot beyond the sidewalls. Please refer to “Buoyancy” section of the Foundation Report in the Information Handout (page 245 of 267).
Response posted 01/03/2024



Inquiry #33: Sheet ST-2 appears to have many details that are not in this contract, such as thickened footings at edges, driveway aprons, Vapor barriers with gravel and sand backfill under the slabs, etc, etc. Can you please take the time and X out the details that are not in this contract?
Inquiry submitted 01/03/2024

Response #1:The inquiry has been received and submitted for consideration.
Response posted 01/03/2024


Response #2:Please bid per the current contract documents.
Response posted 01/03/2024



Inquiry #34: Below are the questions we have. If any questions/concerns please reach out and I can explain in greater detail.

Ignition:
From Doc.- 04-2Q5704 Condensed To EC Only (sheet 31)
Point 3 & 6 mentioned to use Ignition edge + database with reporting. Database should be remotely accessible.
From Doc.- 04-285704sp Condensed(003)
74-5.01D (page 99) – Modification of the SCAD system must include providing all required hardware & software, including licenses to integrate the pump plant system with the SCADA system, include a compatible gateway server at the site with its own SQL database.

These 2 points mention wanting new gateway (ignition) on plant site with SQL and Reports capability, also from first point it says they need ignition edge on site.
But Ignition edge is light version which can’t support external SQL and report.

So, are you aware of ignition edge capabilities, if so this may be a misprint ignition edge on first document.

What we can do, for ignition:
Option 1: ignition Perspective + Server + Database

Option 2: Ignition edge + IPC panel

Number of locations:
In notes I show 3 locations.
But, in the drawing provided, there is only 2 locations.
a. Chocrane OC Pump Plant (37-0341W)
b. Burnett Avenue OC Pump Plant (37-0342W)

Please advise.

Anthony E.
SCC
Inquiry submitted 01/03/2024

Response #1:The inquiry has been received and submitted for consideration.
Response posted 01/03/2024


Response #2:Please provide Ignition Edge and OIT as shown on plan sheets EE5-1 and EE5-7, in conjunction with the Department’s existing Enterprise SCADA system.
New SCADA system is required at Cochrane Road OC and Burnett Avenue OC Pump Plants. Alum Rock Avenue OC Pump Plant has reconfiguration of existing Pump Vision HMI as shown on sheet EE1-4.

Response posted 01/05/2024



Inquiry #35: Followup to inquiry #31, Sheet Membrane Waterproofing is called out in section 99-07115 as follows "Vapor transmission rating must be NOT more than .005 grains per sq foot per hour per ASTM E96". The highest rated sheet waterpoofing products on the market (at best) offer approx .05 grains per hr per sq foot. Is this a highly specialized form of waterproofing OR is this a mistake?
Inquiry submitted 01/03/2024

Response #1:The inquiry has been received and submitted for consideration.
Response posted 01/03/2024


Response #2:Please provide sheet waterproofing with a vapor transmission rating not more than .005 grains per sq foot per hour per ASTM E96.
Response posted 01/05/2024



Inquiry #36: It's entirely baffling to me that Designer chose purposefully to NOT provide elevations to bidders on sht St1-2 and ST1-4 ... instead opting to provide "reference datums". If Contractor were to mistakenly scale the longit section #2 shown on St1-2, he would assume the excavation at south end of box was approx 13'-8" since OG = FG here. However if one is to extrapolate the the Elevations shown on ST1-3, the elevation of top of footing at the south end is about Elev 60.4, with the excavation being 3' below this (1' slab and 2' of structural import), with OG and FG = 74 elev ... then the excavation becomes 16.6' ...this is almost a 25% increase in excavation depth. Please confirm that longit sections on St1-4 and S1-4 are not accurate depictions of excavation depths and that Engineer was just doodling.
Inquiry submitted 01/03/2024

Response #1:The inquiry has been received and submitted for consideration.
Response posted 01/04/2024


Response #2:Please bid per the current contract documents.
Response posted 01/05/2024



Inquiry #37: Does Detail 11 Moisture Barrier with corresponding Note 7 on Sheet ST-2 apply to Box A and Box B on this project?
Inquiry submitted 01/04/2024

Response #1:The inquiry has been received and submitted for consideration.
Response posted 01/04/2024


Response #2:Moisture barrier per detail 11 with corresponding note 7 on sheet ST-2 does not apply for Storage Boxes A and B shown on the ST1 sheets.
Response posted 01/05/2024



Inquiry #38: Do Details 7 and 8 concerning Control and Contraction joints on Sheet ST-2 with corresponding Note 3 apply to Box A and Box B on this project?
Inquiry submitted 01/04/2024

Response #1:The inquiry has been received and submitted for consideration.
Response posted 01/04/2024


Response #2:Control and contraction joints per details 7 and 8 with corresponding note 3 on sheet ST-2 do not apply for Storage Boxes A and B shown on the ST1 sheets.
Response posted 01/05/2024



Inquiry #39: Standard Plan D-81 for Box Culverts refers you to D-82 for details not shown. D-82, under Construction Notes, paragraphs 2, 3 and 4 indicate no expansion joints permitted in invert, calls for 1/2" premolded expansion joints at 30' on center in the roof and walls, and says temporary construction joints may be allowed if normal to box.
Can you confirm that these notes apply and if so will these joints need waterproofing?
Inquiry submitted 01/04/2024

Response #1:The inquiry has been received and submitted for consideration.
Response posted 01/04/2024


Response #2:Construction notes regarding expansion and construction joints in Standard Plan D82 do not apply. Submit a proposal for construction joints for approval. All construction joints will require waterproofing.
Response posted 01/05/2024



Inquiry #40: Contract currently calls for 250 working days. The Motor Control Panels require significant engineering time and have long lead components that will not allow for completion withing 250 working days. Quotes we are receiving are showing engineering and submittal duration of 120 working days, and fabrication time (after having received approved submittals) of 220 working days. This doesn't include time for Caltrans submittal review, Contractor installation, wiring, testing, commissioning of the equipment. We request that Caltrans modify the contract duration to 400 working days and/or allow for delaying NTP until submittals for Motor Control Panels are approved.
Inquiry submitted 01/09/2024

Response #1:The inquiry has been received and submitted for consideration.
Response posted 01/09/2024


Response #2:Please refer to section 8-1.04C of the Special Provisions for delayed start.
Response posted 01/09/2024

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.