DOT262216-2217-SUB_INVEST_ad3.pdf

Delaware Department of Transportation

QUESTIONS AND ANSWERS

SUBSURFACE INVESTIGATION SERVICES

Agreement 2216-2217F

Thursday, September 17, 2026 Q # Question Answer

Good afternoon. I cannot find Appendix B and C, which are referenced in the RFP, as part of the posted information. Only Appendix A is included in the RFP. Can Appendix B and C be provided as soon as possible?

Attachements A and B have been provided with Addendum 1.

I would like clarification as to whether the bid items for soil borings / sampling/ coring (Bid items #1 to #8) are to include all labor associated with standard drilling and sampling, or if this labor is to be accounted for separately in Bid Item #9 Man-hours of Miscellaneous Work. For example, if the project consists of 50 linear ft of soil borings using a truck mounted drill rig, would this be paid for as 50 lf of Soil Borings, Land ( Item #7), or would this also include an additional line item to account for the man-hours of labor required under bid item #9 (i.e,. 3 man crew x 4 hrs = 12 hrs of man-hours in addition to the linear footage of drilling)?

The unit prices for Items 1 through 8 include all labor, equipment, materials, and incidentals needed to advance the boring and obtain and handle the samples. Crew labor for drilling and sampling is not paid separately under Item 9. In the example given, 50 linear feet of land soil boring would be paid as 50 LF under Item 7 only. Item 9, Man-hours of Miscellaneous Work, covers labor for work that is not part of drilling and sampling and is not covered by another bid item.

- Permit Fees: DNREC now has a fee associated with soil boring permits that are required for drilling on all sites (new starting in December 2025). Should this permit fee be accounted for in mobilization costs, or as a separate line item? The number of permits required may vary from project to project, and several borings could typically be included under one permit, so including the fee in the mobilization cost might result in overcharging on some projects and undercharging on others. Also, it is hard to say if the permit fees will remain unchanged over the 3 to 5 year period of this contract. So, consideration of making this a separate line item is requested to make sure the appropriate permit fees can be tracked to a project, and it could be more easily modified in the future if the fee changes significantly over the contract period.

DNREC soil boring permit fees will be treated as a reimbursable expense, billed at actual cost. A separate line item may be established in Appendix C to track this cost per project.

Q # Question Answer

- Private Utility Scan: The use of a private utility scan as a confirmation of / supplement to the Miss Utility markout is used frequently on drilling projects near utility corridors, which is where many DelDOT projects would be located. Most consulting firms/ private companies now require this step in addition to Miss Utility for the safety of the work crew and the public. Should this service be included in the mobilization cost, or could a separate line item be created for this service , with a per day unit cost established as part of the contract?

Private Utility Scan will be added as a separate line item in Appendix C, priced on a per-day basis.

- GPS Location: Previous contract awards have included a line item for layout of borings and obtaining GPS coordinates. This is not included in the cost sheet in Appendix C. Can this be added as a line item , or should this be considered a part of mobilization? Or should time associated with layout be tracked as man-hours of misc work or project management?

GPS Location/layout of borings will be added as a separate line item in Appendix C, priced on a per-day basis.

Sheet1