California Department of Transportation

Contract 05-0L70U4

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.

Q1) The Retaining Walls General Notes No.1 regarding the "Limits of Payment For Painting Piles" shows that the limits of the undercoat do not include the coating of the Notched Pile Anchor Detail. Are the Pile Anchor Details to be masked and kept free from coating or is the undercoat to be extended to the Top of Pile Elevation?

A1) As shown on Plan Sheet #194, The Retaining Walls General Notes No. 1, regarding the "Limits of Payment For Painting Piles"...undercoat is not to be extended to the top of pile elevation. The pile anchor detail above the limit of payment for undercoat is to be masked and kept free from coating.

Q2) There is not a log of test borings provided for the piles to be installed at RW No. 15 (Location 23). Are new borings available for this area? Or, are the borings available from the installation of the existing 16" CIDH Pile?

A2) We do not have any subsurface information, LOTB's or Foundation Report, for this wall. However, Asbuilts for another project No. 04-346094, dated 10-26-72 within the vicinity has Logs of Test Borings for existing timber lagging wall at that location that was constructed with 16" diameter CIDH piles. The as built plans are available to order at Coastal Reprographic Services 805-543-5247.

Q3) Is the existing asphalt to be removed as Roadway Excavation to be considered Type Z-2 as shown on plan sheets 52 and 53 or may this material be hauled to a local recycle facility?

A3) The existing asphalt to be removed as Roadway Excavation as shown on plan sheets 52 and 53 should all be considered Type Z-2 Excavation. This material is hazardous waste regulated by the State of California and shall be transported to and disposed of at a Class I Disposal Site and cannot be hauled to recycle facilities.

Q4) Is there a possibility that this job may be pushed?

A4) As of today, no addenda to the contract are required. A "push" or postponement of the scheduled 11/03/2009 bid opening date would be considered a modification and would require an addendum be issued.

Q5) Please provide the depth, casing diameter, and a detail of the monitoring well to be removed at station 403+20.28.

A5) No additional information is available for the existing monitoring well.

Q6) Where is the access point for the private driveway(CES1 Line)at Location 22? Please provide directions from Highway 17 to the CES1 line.

A6) Please refer to Addendum No. 1 dated Oct 29, 2009.

Q7) Under which bid item is the work for construction of the CES1 Line to be paid? It does not seem to be accounted for in the quantity summary sheets.

A7)Please refer to Addendum No. 1 dated Oct 29, 2009.

Q8) Bird Protection - Did you intend to have a table? None is shown.

A8) No, please refer to Addendum No. 1 dated Oct 29, 2009 for date changes.

Q9) With all the tree removal, we may exceed an acre of diturbed ground. Please consider increasing the 1.0 acre limit.

A9) Under Special Provision, Section 10-1.02, Rainy Season, Contractor may seek approval from the Engineer in writing for disturbing more than 1.0 acre of soil area during construction.

Q10) Is any additional information available for the existing "H" pile to be removed for contruction of the 30" CIDH for the sidehill viaduct? What is the tip elevation? Is the "H" pile encased in concrete or was it driven? Any additional information would be helpful.

A10) Information regarding the existing structures can be found from as-built plans. No additional information will be provided. Please bid per current contract documents.

Q11) Will Caltrans make copies of the Preliminary Site Investigation Report available on-line?

A11) The Preliminary Site Investigation Report is not available on-line, but it is available to order at Coastal Reprographic Services at 805-543-5247.

Q12) Based on the stress grading, a select structural grade will be required rather than a #1. Is that your intent?

A12) The intent is not to require select structural grade, but to require timber lagging to have the minimum 1500 psi design strength for extreme fiber in bending per the National Design Specification for Wood Construction.† Rather than specifying the wood species and grade, the minimum allowable bending stress for design was specified. Design values for bending stresses shall be for single member uses since the lagging members are not connected by load distributing elements.

Please refer to addendum No. 1 dated October 29, 2009.

Q13) Where is the legend to describe what the hatched areas are? There is a wide hatch and narrow hatch. What do they represent?

A13) Please refer to Addendum No. 1 dated Oct 29, 2009.

Q14) In order to build the pile retaining walls, we must excavate the required amount of Z-2 contaminated material and haul off prior to drilling. Those excavations fall within 8' of the ETWsaw cut line. The "Limits of Structure Exc" on Sheet 195 shows the removal out horizontally to OG. We would prefer to excavate to the ETWsaw cut line and protect and maintain the edge per paragraph B, then preoceed with the pile work. A second option would be to excavate to the ES line, protect and maintain the edge and then cut to the ETWsaw cut line after the piles are lagged and backfilled. In any case please provide direction prior to bid.

A14) No additional information will be provided. Please bid per current contract documents.

Q15) "Quickchange Moveable Barrier System will be measured by the linear foot along the top of the barrier, excluding the length of the ABSORB 350, Test Level 3, at the initial placement location in each direction of travel, as shown on the plans." The bid quantity is 8,140 LF, but we are going to be paid only for the quantity of the "initial placement" in each direction. That certainly won't be 8,140 LF. So, if the initail set is for example, 1,000 feet, we will be paid for !,000 x 2 (each direction of travel) = 2,000 feet?

A15) Please refer to Addendum No. 1 dated Oct 29, 2009.

Q16) The matchline on p113 (TH-8) is to match to TH-9, Line "B19/21". TH-9 is Location 22. Also, with the matchlines lines up, the roadway is not.

A16) The match line on TH-8 was cut on a perpendicular to the barrier alignment for "B19/21" and on TH-9 was cut perpendicular to the roadway. This would account for the roadway not lining up. On TH-9, Location 19/21 can be seen protruding just past the match line, but was not labeled as such. This is the end of Location 19/21 and then Location 22 begins as shown.

Q17) Location 22, private drive. How do we get to this location? What is the access?

A17) Please refer to Addendum No. 1 dated Oct. 29, 2009.

Q18) What contractor constructed the existing Soil Nail Wall?

A18) The information available indicates that the The Contractor that built the existing soil nail wall was Condon-Johnson and Associates, Incorporated.

Q19) On Page 131, Under measurement and payment for Structure Excavation (Type Z-2), all the excavation is in the bid items mentioned, to excavate and load, Yet the quantity for offhaul and disposal (page 132) bid item 57 is a Final Pay. Please recheck the quantity of item 57, as it seems 10 times+ short, if using the tables and details in the plans.

A19) Please refer to MEASUREMENT AND PAYMENT on page 131 of Special Provisions.

Q20) The three alternate types listed in the spec pg. 173 don't match the drawings on plans sheets 173 & 174. What is the "Crash Cushion (Type React 9CBB & 9SCBS)" on plan sheets 173 & 174 suppose to refer to? If we are to choose between the three listed in the spec, please provide Std. Plans for those.

A20) The three alternate types listed in the spec pg. 173 are special Crash Cushions and are made specifically for limited spaces in the field. We donít have Standard Plan Detail Sheets for them. Please follow the manufacture's recommendation for installation.

Q21) The cost for a transfer machine for the quick barrier ranges from $103000 to $171000 for the lenght of job estimated. Is the State really going to require a "backup machine" for the Quick Change barrier as mentioned on page 108?

A21) Yes, We are requiring a backup machine.

Q22) It would be costly to provide another machine on site if that is your intention. However, the damages that can occur as a result of failure to re-open the lanes is also very costly and it is enevitable that some machine problems would occur with the constant use over a year period. May I suggest that since the supplier is a sole source, that Cal Trans require that the supplier be responsible for all costs incurred as a result of failure to re-open traffic as a result of their machine's breakdown. They would then have to make an allowance in their quote for another machine being available a some location or otherwise make make repairs that might be required in addition to allowing for some Damages in re-opening traffic late.

A22) Please bid it according to specification section 10-1.29.

Q23) Would Cal Trans consider postponing the bid date one week?

A23) No changes have been made to the current bid opening date.

Q24) What and where are the specs for the tree removal and clearing and grubbing areas.

A24) Please refer to Section 10-1.35 Clearing and Grubbing. Trees to be removed shall be flagged by the Contractor no less than 5 working days prior to removal. No removal shall take place until flagged trees are reviewed and approved by the Engineer.

Q25) What sheets/cut outs show the areas for clearing and grubbing and tree removal?

A25) Please refer to Plan Sheet 148 to 153 (PR Sheets) for reference of tree removal. Clearing and grubbing shall conform to the provisions in Section 16, "Clearing and Grubbing," of the Standard Specifications and these special provisions. Vegetation shall be cleared and grubbed only within the excavation and embankment slope lines.

Q26) Is there any requirement precluding working in more than one stage at a time. To make the 1 year schedule, we will need to.

A26) No, work can be performed in more than one stage at a time with Construction Engineer approval.