California Department of Transportation

Contract 10-363114

The responses to bidder's inquiries, unless incorporated into a formal addendem to the contract, are not a part of the contract and are provided for the bidder's convenience only. In some instances, the question and answer may represent a summary of the matters discussed rather than a word-for-word recitation. The availability or use of information provided in the responses to bidder's inquiries is not to be construed in any way as a waiver of the provisions of Section 2-1.03 of the Standard Specifications or any other provision of the contract, the plans, Standard Specifications or Special Provisions, nor to excuse the contractor from full compliance with those contract requirements. Bidders are cautioned that subsequent responses or contract addenda may affect or vary a response previously given.

Q) Are cross sections available for this project and where do we obtain them?

A) Copies of cross sections are available by ordering from Stockton Blue Reprographics, located at 1421 N. El Dorado St. in Stockton, CA 95202. Contact Don Rader at (209) 464-8724; Fax: (209) 464-8739.

Q) In relation to the incentive clause it appears that the $20,000 disincentive has no cap, but the incentive part does. Will that target date of September 1, 2007 adjust accordingly with weather days and winter suspensions?? The Central Valley Caltrans work routinely expects winter suspensions due to the rain, fog, and the dirt classifications that are found here.

A) There will be no adjustment of the September 1, 2007 "target" date in implementing the incentive payments or disincentive deductions. Adjustments to contract time made in accordance with Section 8-1.05, "Temporary Suspension", of the Standard Specifications, will not affect the required completion date for Stage I and Stage II work as defined in Section 4, "Beginning of Work, Time of Completion and Liquidated Damages," of the special provisions.

Q) My question has to do with Type C Erosion Control (usually in the Merced, Region 10 area). Why is straw put down and incorporated before the seed is put down? Doing this would prohibit the seed from proper germination. I also wanted to know why incorporation of the straw is needed when the final step in Type C Erosion Control is an application of fiber and stabilizing emulsion.

A) Incorporation of straw in accordance with the requirements of Section 10-1.35, "Erosion Control (Type C)," of the special provisions, allows enough exposed soil to permit proper germination of seed.

Q) Erosion Control (Drill Seeding) Is the quantity of seed used for drill seeding included in the Estimated Quantities provided by the engineer or is the seed in addition to the estimated quantities? Ex: If the estimated quantity of drill seeding is 7 HA's would the seed required in the spec be an additional amount than what the estimated quantity for Type C and D Erosion Control are?

A) Refer to "Measurement and Payment" of Section 10-1.37, "Erosion Control (Drill Seed)," of the special provisions: "The contract price paid per hectare for erosion control (drill seed) shall include full compensation for furnishing all labor, materials, tools, equipment, and incidentals, and for doing all the work involved in erosion control (drill seed), complete in place as shown on the plans, as specified in the Standard Specification and these special provisions, and as directed by the Engineer." Therefore, the drill seed quantities are included in the Engineer’s Estimate for Item No. 76, "Erosion Control (Drill Seed)."

Q) I have looked at plans both on line and at our local builder’s exchange. I have yet to find the erosion control areas on the plans. Am I overlooking them or are they not there?

A) Erosion control areas are identified in the "Erosion Control" table on the Summary of Quantities plan sheet, Q-7 (Sheet 404 of the plans). Erosion control is normally calculated for all disturbed soil areas.

Q) Referring to Section 10-1.46 of the Special Provisions, what is the intent of this specification? It is assumed that the white pigmented curing compound, ASTM Designiation C309, Type 2, Class A, can be used as a bond breaker for the dowels. The application rate as specified is based upon applying the curing compound to the surface of the pavement. Please explain how we would apply curing compound to the dowels at the approximate rate of one liter per 3.7 m2.

A) The intent of "Bond Breaker" in Section 10-1.46, "Concrete Pavement," of the special provisions, is to require application of a bond breaker for dowels, and to specify what type of bond breakers are acceptable. The specified spread rate for white-pigmented curing compound is approximate and applies to the surface area of the dowels.

Q) How many trains per day, and at what times, will pass through the job site?

A) According to Union Pacific, the trains run approximately 20 times within a 24 hour period and there is not a set timetable for the running of their trains.

Q) With reference to Item 119(F) Class 1 Concrete (Box Culvert), due to the short heights of these RCB’s , we are planning to use pre-cast units. What specification should we use?

A) Refer to Section 51-1.02, "Minor Structures," of the Standard Specifications, which states, "Minor structures, at the option of the Contractor, may be furnished and installed as precast units, or the units may be combined precast and cast-in-place structures, provided the structures in place substantially conform to cast-in-place construction as specified in these specifications." For your information, Bridge Standard Detail Sheets for precast underground structures are available at the following website:

Q) Regarding the PG&E 12 KV line, they moved it to the sta 25+10 (refer to sht. 304/656) and raised it 8M. Still will need to de-energize. How much to de-energize the 12 KV line at the Mission OH bridge (sta 25+10)?

A) The line did not move. PG&E will raise the line to clear the Mission Avenue finished grade by 10.1 meters (approximately 33.1 feet). The line crosses at approximately Mission Ave Station 24+83,+/-. If the contractor feels that the distribution line needs to be de-energized to accommodate his equipment and to do the work, the Contractor will need to contact PG&E to negotiate costs and scheduling of the de-energizing.

Q) Referring to sheet 584/656 of the contract drawings, does the PG&E 12 KV Joint Distribution line at Bent #2 get moved? If not, how much to de-energize it? (The line elev. Is 66.094M and the top deck elev. At that point is 64.0M.

A) The PG&E line will be raised to clear the deck by 10.1 meters. The elevation shown on Sheet 584 of the plans is the existing line elevation prior to relocation.

Q) Also, same question for the joint pole at Bent #3.

A) The line in question near Bent 3 is a telecommunication line for Union Pacific Railroad Company. This line may be placed underground to allow for the construction of the Overhead. The joint pole, as well as the existing Billboard sign, may be removed or relocated. Refer to Section 13-1.02, "Railroad Requirements," of the special provisions, which states that "the Contractor will coordinate with the Railroad and the Telecommunication Company(ies) to arrange for relocation or other protection of the system prior to beginning any work on or near Railroad Property.

A) "The joint pole in question on Sheet 584 of the plans, "Mission Ave Overhead, Foundation Plan," is for a telecommunication line owned by Union Pacific Railroad Company. The Department has negotiated to have this line and joint pole relocated by Union Pacific prior to beginning of contract work. Therefore, the line should have been shown on the Utility Plans as an existing underground line. Refer to Section 13-1.02, "Railroad Requirements," of the special provisions, which states that "the Contractor will coordinate with the Railroad and the Telecommunication Company(ies) to arrange for relocation or other protection of the system prior to beginning any work on or near Railroad Property."

Q) We respectfully request a one-week postponement to the bid date, currently 10/05/05. The bid opening date for this project is one day after the bid opening date for the Highway 1 Devil's Slide Bridges project (04-1123K4) which we are bidding.

A) The bid opening date for Contract 10-363114 will remain the same (10/05/05).

Q) Can the piles installed under this Bid Item be driven with a vibratory hammer?

A) No, vibratory hammers are not allowed. Please refer to paragraph 2 of Section 49-1.05, "Driving Equipment," of the Standard Specifications.

Q) Please re-consider a one week posponment to the bid date. The SR 99 Project at Selma (06-350704) is bidding the day before on October 4, 2005 and there will be several contractors/suppliers bidding on both projects.

A) The bid opening date for Contract 10-363114 will remain the same (10/05/05).

Q) Is there any chance of a one week postponemet? You have three sizeable projects bidding in District 06 & 10 within an eight day period. We would like to bid on all three but are unable to due to the close proximity of the bid dates. Is there any possibility of a one week postponement to spread them over two weeks?

A) This project is on a critical schedule. The bid opening will not be postponed.

Q) There are several large billboards located on the project. Should the contractor assume he will have to remove those or will the owner of the billboards remove these??. Also the City of Merced is using the paved parking lot south of Gerard Avenue to store landscaping mulch. Will that be removed by the City of Merced or will the contractor have to remove that also??

A) All billboards in conflict with the project will be removed by the owner prior to start of construction. The landscaping mulch located on the south side of Gerard Avenue is State owned. The mulch, if in conflict, will be removed by State forces prior to start of construction.

Q) It appears that there are 3 CMS Sign Structures required for this project yet no drawings, weights or anything are provided. In the bid schedule (items 209-211) talk of the CMS portion provided by state and they are shown on the electrical drawings (sheets 430, 436, 444 & 447) but no structure drawings or bid wt./item is given for the structures (typically under 'Furnish Sign Structure (Truss)'?

A) Please bid in accordance with the contract documents.

Q) In our attempt to solicit pricing quotes for fly ash, we have learned that Headwaters Resources, Inc. and Boral Material Technologies fly ash no longer meets the requirements of Caltran's specifications as the calcium oxide content exceeds the 10 percent limit and the Mineral Recources Technologies has informed us that they have no fly ash to bid at this time. Consequently, it appears that the only viable source for the fly ash at bid time will be Salt River Materials (Phoenix Cement Company) but the fly ash that they have available to sell has not yet been listed on Caltran's Approved Admixture List. Apparently, the material (Gallup, NM) has been submitted with test results demonstrating that the material complies with the requirements of ASTM C 618 and the Caltran's specifications but it has not yet been approved. Two questions, will the specifications be modified to allow fly ash with a calcium oxide content greater than 10 percent and or will the Gallup, NM fly ash be approved for use one the project?

A) Please refer to Section 90-4.08, "Required Use of Mineral Admixture," of the amended Standard Specifications in the special provisions, which states, "The calcium oxide content shall not exceed 10 percent." Refer also to Section 90-4.03, "Admixture Approval," of the amended Standard Specifications: "Approval of admixture brands will be dependent upon a determination as to compliance with the requirements, based on the certified test results submitted, together with tests the Department may elect to perform." Standard Specification 90-4.03, paragraph 2 provides for using admixture brands that are not on the Department's current list of approved brands.

Q) Special Provisions Section 10-1.48 states that the piling is to be close-ended. However, plan sheet 561, 572, 610, 624 showing CISS pile details call out for piling to be open-ended. Please confirm. Per order of precedence, Special Provisions shall dictate piling to be close-ended. Please confirm.

A) There appears to be an error in the special provisions. The bid opening date is 10/5/05 and it is unlikely that an addendum will be issued at this late date. Please bid as best you can per the contract documents.