California Department of Transportation
 

Contract 06-442614

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) Between stations 385.8 and 385.9, the Fiber Optic ductbank crosses the freeway. The ductbank is not labeled as to the number of 1-1/2" HDPE ducts are included. Should the number of ducts be two as previous instances such as this have been designated?

A1) Between stations 385.8 and 385.9, it is not a fiber optic ductbank but an inducted loop conduit and should be one - 3" conduit as noted. If you are referring to station 388.7, it is a fiber optic ductbank and should be 2 - 1 1/2" HDPE. The number of ducts should be 2 if not noted on the plans.


Q2) The Fiber Optic ductbank jogs away from the shoulder to cross the Biola Spur Parcel. No notes are given to describe any special treatment of this section of the ductbank. Is there a special depth or encasement required where the ductbank crosses the parcel?

A2) Please refer to sheet E-19 (plan sheet number 162 of 242) for details of fiber optic ductbank depth/encasement requirements at this location.


Q3) Where two 1-1/2" HDPE ducts are to cross the six lanes of freeway, may the two ducts be installed with no spacers or encasement with slurry, using directional drilling?

A3) Yes, the two ducts can be installed using directional drilling.


Q4) Where two 1-1/2" HDPE ducts are to cross the freeway off ramps and on ramps, may the two ducts be installed with no spacers or encasement with slurry, using directional drilling?

A4) Yes, the two ducts can be installed using directional drilling.


Q5) Where two 1-1/2" HDPE ducts are to cross both the six lanes of traffic and a ramp, may the two ducts be installed with no spacers or encasement with slurry, using directional drilling?

A5) Yes, the two ducts can be installed using directional drilling.


Q6) Specifications are written as if we are to supply a new MVDS. We see that two are going to be altered to remove the PV system and connect to 120VAC power, and that one is to be relocated. Is there a need to supply any new parts, testing and training per the specifications other than the itmes related to converting the two to 120VAC power?

A6) Yes, there is a need to supply new parts for the conversion of PV to 120 VAC as noted on the plans. Testing shall be conducted for all MVDS locations after conversion or relocation. Training for items related to converted MVDS shall be conducted. There is no need to conduct training for the relocated MVDS location. 10Jun10


Q7) Are cross sections available?

A7) Yes, they are available electronically. Please contact the D6 Duty Engineer, Central Region Construction at (559)445-6416 and he will provide the cross sections in pdf format thru email for this project. 3Jun10. Cross sections are available at MJ's Copycats; 5096 N. Blythe Suite 115, Fresno, CA 93722. Phone# (559) 271-7848.


Q8) Although the average lead level may be considered low, the upper end of the range is fairly high. How can bidders accurately determine the quantity of earth materials that require special handling and disposal methods versus the amount of earth materials which do not?

A8) Although lead has been detected in earth material in unpaved areas at a depth of 2.0 feet within the project limits, they are at an average concentrations below 1,000 mg/kg total lead and below 5 mg/l soluble lead. Therefore, the earth material within the project limits is not considered a hazardous waste and does not require disposal at a permitted landfill or solid waste disposal facility. 3Jun10


Q9) Did Caltrans find any property owners willing to take the dirt, and if not, will Caltrans consider making testing for lead and disposal of earth materials containing lead an extra work at force account item?

A9) No, the earth materials from excavation are within the state's right of way and Caltrans will not consider making testing for lead and disposal of earth materials as extra work. They should be included in the contract price paid per cubic yard of roadway excavation. 3Jun10


Q10) On page 14 of the special provisions, time for completion is given as 280 working days. On page 1 in Notice To Bidders, time is shown as 380 working days. Please clarify.

A10) The 280 working days shown on page 14 of the special provisions is correct. Please also refer to item 3, Time-Related Overhead. 10Jun10


Q11) It appears the information contained in special provision section 5-1.16 on page 25 is out of date. Late fees assessed by FID are mentioned for work not complete by Feb 2010. Are there new deadlines which need to be considered?

A11) Refer to addendum #1, dated 06/16/2010.


Q12) Are you able to rule out the presence of lead in the dirt underneath the existing pavement where Stage 1 construction will take place?

A12) There should not be hazardous waste levels of lead under the existing pavement - lead is present naturally and the lead compliance plan will protect workers during construction activities. Soil generated as a whole is expected to be non-hazardous for lead based on soil investigation performed in project area. Historically, the soil under the pavement has not been a problem. 3Jun10


Q13) Are you able to rule out the presence of lead in the dirt where ditches and basins will be constructed?

A13) The soil where the basin and ditches will be constructed most likely contain naturally occurring lead - and are far enough away from the highway to not be concerned with hazardous levels of lead. Typically lead from car exhaust will not travel a great distance. The lead compliance plan will protect workers health and safety when working these areas. Generating the soil as a whole is expected to be non-hazardous for lead based on the statistical analysis performed on soil sample results adjacent to the right of way. 3Jun10


Q14) Since Stage 1 construction takes place in an area which was improved and paved in a previous contract, and since this area will be called the "temporary" travel way until it reverts to shoulder at the end of stage 3, are the requirements of Standard Spec. Section 19-5.03, 95% compaction for 2.5-ft beneath finish grade for the width of the traveled way plus 3-ft on each side thereof, applicable in Stage 1?

A14) The requirements of Section 19-5.03, Relative Compaction (95 percent) of the Standard Specifications for outside shoulder reconstruction in Stage 1 construction still apply to make sure these shoulders will not fail during its use as a temporary traveled way. 3Jun10


Q15) Sheet X-2 shows section C on the SB line from STA 240+99.99 to 276+80.80 and STA 281+00.00 to 293+60.00. On the same sheet, Sta 260+49.60 to 270+81.95 and STA 281+00.00 to 291+63.19 show just section E and no secion C. Is the intention to apply the cross slope correction on the mainline and not the shoulders for those two areas? Please clarify.

A15) The slope correction generally applies to the mainline traveled way. The outside shoulders that will be reconstructed will only be overlayed while other isolated shoulder locations need to be cold planed.7Jun10


Q16)Sheet 94 - Stage Construction, is showing the thickness of the new roadway to to be .70 HMA over 1.30 cl 2 a.b. Typical cross section are showing this to be .70 HMA over .90 cl 2 a.b. Which is correct?

A16) The structural section thickness of the new lanes shown on typical cross section sheet X-1 is correct. Stage construction sheets are only accurate for stage construction work/sequencing only. 8Jun10


Q17) What is the purpose of leaving the +/- 2' width of existing a.c. along the outside shoulders as shown on the typicals? By leaving this in, it will make these areas hard to grade/pave, these areas will also be breaking because there is nothing holding it in place and it will also leave a cold joint in the areas that do not take an overlay.

A17) Please bid as you see it.8Jun10


Q18)Is the contractor going to be required to remove all the existing trees and shrubs that are in the alignment of the ditch excavation?

A18) Please refer to the layout sheets and sheet Q-4 for trees that are to be removed. Tree removal and all other vegetation shall be removed as part of the Clearing and Grubbing item. Refer to section 10-1.28 of the SSP and to Section 16 of the Standard Specs. 10Jun10


Q19)Beginning at station 256+00 it shows the beginning of an earth gutter with earth berms spread throughout. Is there a grading detail showing the excavation of the gutter or are the earth berms the only work being done in these areas? If grading has to be done in these areas, is the contracor required to remove all the trees and brush that are in the alignment of the gutter?

A19) In addition to the earth berm work as shown on Drainage Details Sheet DD-4, gutter excavations are also required. Please refer to the gutter excavation locations shown on typical cross section sheets. Again for the question of tree/vegetative removal, see the answer to question above. 10Jun10


Q20)Sheet X-1 shows structural section H being 1.05' JPCP and 0.35' LCB. Sheet Q-1 shows the CY for JPCP, LCB, and CL 2 ASB to be 424.3, 202, and 141.4 respectively. This makes the section for the LCB to be 0.5' and the CL 2 ASB to be 0.35'. Please clarify the section for structural section H. Also, where is the CL 2 ASB if it is not a part of structural section H?

A20) The structural section H shown on typical cross section sheet X-1 is correct. 9Jun10


Q21)On sheet D-12, the cross-hatched area refers to details on sheet C-4. Sheet C-4 does not have any details on the drainage excavated areas. Please clarify where the details for this area is.

A21) The cross-hatched area on sheet D-12 refers to the drainage excavated areas that will be deepened by 6 inches as shown on the Temp Fence (Type ESA) section detail on sheet C-4. 10Jun10


Q22)The staging plans do not clearly indicate when the placement of the new polyester concrete overlay for the existing bridges shall be installed. Please verify proper stage for placement of polyester concrete overlay for the existing bridges which parallel the new bridges Biola and Herndon Canal. Please provide proper instructions for traffic handling and any other instructions associated with the placement of the polyester concrete overlay.

A22) The placement of the new polyester concrete overlay for the widening portion of the median deck for Biola Junction OH and Herndon Canal Bridge should occur during stage 3 construction. No additional traffic handling is required since the Contractor will be working with temporary k-rail.


Q23)The staging plans do not clearly indicate when the construction of the approach slabs shall take place. Please verify proper stage for construction of the new approach slabs to both the new and existing bridges. Please provide proper instruction for traffic handling and any other instructions associated with the construction of the new approach slabs.

A23) For traffic handling during construction of approach slabs, please refer to the answer in bidder inquiry #22.


Q24) Structural thickness for Class 2 Aggregate Subbase is not clearly indicated in the plans. Please verify structural thickness for Class 2 Aggregate Subbase on the following locations: SR99SB 296+14.68 to 298+06.31, 402+92.87 to 405+00 and 237+30 to 237+60.

A24) Refer to addendum #1, dated 06/16/2010.


Q25)Please provide as-builts for the existing bridges which parallel Biola, Hendon Canal and Grantland U.C. Existing bridges are as follows: 42-0127 L, R / 42-0129 L, R / 42-0131 L, R.

A25) Please refer to Section 2.103B, "Supplemental Project Information" under Amendments to the Standard Specifications of contract Special Provisions. No additional information will be provided; please bid per current contract documents.


Q26) Please refer to section 10-1.27 Existing Hwy Facilities, page 110 Earth Material Containing Lead. Can the state provide the lead testing and sampling data for the lead detected on this project?

A26) The lead testing and sampling data are available at MJ's Copycats; 5096 N. Blythe Suite 115, Fresno, CA 93722. Phone# (559) 271-7848.


Q27) With the new shoulder section E designed as 0.60' HMA & 0.70' CL 2 AB equals 1.30', can section 19-5.03 of the standard specifications requirement of 95% compaction at 2.5' below finished grade be eliminated?

A27) Please refer to the answer in Bidder Inquiry #14.


Q28) Please clarify the measurement of payment for bid item 72, tack coat. The amendements to the specifications on page 151, paragraph 8, says that the Engineer does not adjust payment for increases or decreases in the quantities per section 4-1.03b. Does this mean that this item will be considered as a final pay item? So if the contractor uses 20 ton of tack coat, will he still be paid 44 ton?

A28) No, the clause does not mean the item is a final pay quantity, and it does not mean you will be paid for 44 tons if you only apply 20 tons. It means the bid price for the item will not be adjusted according to Section 4-1.03B of the Standard Specifications. You get the bid price for the tonnage, whether the Contractor uses 20 tons or 44 tons.


Q29) On sheet 233 the joint seal is called out as Type A, MR=1" for the Biloa Junction OH (Widen). On sheet 230 the summary of quantities lists the joint seal as (MR 1/2"). There is no bid item for joint seal (MR 1"). Bid Item 90 for Joint Seal (MR 1/2") appears to include the quantity for the MR 1" at the Biola Junction OH. There is no item for Joint Seal, MR 1".

A29) Please bid per the current contract documents.


Q30) We are unable to determine if this is a Federal-aid project. Is this project subject to the "Buy America" clause? Please advise.

A30) This is not a Federal-aid project and not subject to "Buy America" clause.


Q31) Pay items #22 Remove Fence(BW),Item #23 Remove Fence(WM),Item #113 Chainlink Fence(CL-6)appear on the bid schedule. There is no spec for the three items in the table of contents or in the specifications. Will Caltrans be issuing another addendum to include the specifications?

A31) If an item of work is covered in the Standard Specifications, a Standard Special Provisions (SSPs) is not needed to refer back to the Standard Specifications. For pay items #22 and #23, please refer to Section 15 of the Standard Specifications. For pay item #113, please refer to Section 80 of the Standard Specifications.


Q32) Is there currently any planned delay to the schedule bid opening for 6/23/10? There are still some issues that appear not to be clarified at this time. 1. The Special Provisions indicate the presence of lead content “at a depth of 2’ outside of paved areas) that would have to be handled as a hazardous material. It is difficult to quantify the volume of excavation that would require this special handling. Is the high lead content present only at a depth of two feet? How far below 2’? How far outside the existing edge of pavement; or does the contaminated material extend from the surface to a depth of 2’? On a recently bid project on Fwy 99 and North Ave. (6/15/10), contract No. 06-0J1604, Caltrans issued an addendum adding the excavation of the lead contaminated material as a separate item. This was appropriate at the methodology and cost involved is like day-to-night in comparison to the Roadway Excavation item. 2. The Specifications also indicate the presence of an item for preparing bridge decks and another item for removing concrete. Neither of these items appear on the Bid Schedule.

A32) Yes, lead is present along this section of SR 99, however it is expected to be present at non-hazardous levels. The SSP is for a lead compliance plan, to protect worker safety. According to testing performed and statistical analysis run, the lead is expected to be non-hazardous and would not require special disposal requirements if generated and handled as a whole. The project on SR99 and North Ave., needed a separate item for soil handling because the WETs were high for soluble lead. At first it was thought that no soil would be generated, but that changed and so the need for the separate handling item. This scenario is not expected for this North Fresno Six-Lane project. These are bid pay items. Pay item #39 is for Remove Concrete and pay item #40 is for Prepare Concrete Bridge Deck Surface.


Q33) In section 10-1.70, "Prepare and Stain Concrete" of the special provisions, it states that 33711 of FED-STD-595 be used. This is a "sand" color which is opaque. The specifications call for the use of an acid stain to acheive this color. Acid stains produce a varigated, mottled and translucent look that is not opaque in any way. This being said, will the owner be open to the idea (post bid openning) of other types of penetrating stains that will achieve the look and color that is intended, with the added benefit of being more environmentally friendly and not adding to the overall cost?

A33) The concrete stain will be required to visually match the color of the existing concrete median barrier on Route 99 through the City of Fresno.