Questions and Answers for Kelly Airfield Rubber Removal JBSA-Lackland.pdf

Questions & Answers for Kelly Airfield Rubber Removal JBSA‐Lackland;

Project Number KELL201914 ‐ FA301620B0010

1. Is the use of detergent required for the rubber removal on this project?

Gov’t Response: USE OF DETERGENT IS REQUIRED FOR THIS PROJECT FOR EACH

MOBILIZATION

2. If so, what detergents have been acceptable on the past contracts to remove the rubber?

a. Is Aerogreen an acceptable detergent?

b.

Gov’t Response: USE OF AEROGREEN (4035) DETERGENT MAY BE ACCEPTABLE.

WHAT EVER DETERGENT IS TO BE USED WILL REQUIRE APPROVAL FOR 802 CES

ENVIRONMENTAL OFFICE.

IN THE PAST AVI-88 BY UNICEN INC WAS USED SUCCESSFULLY TO REMOVAL

AIRCRAFT TIRE RUBBER FROM THE KELLY RUNWAY.

ALSO APPROVED ON OTHER GOVERNMENT AIRPORTS IS AVION 50.

3. The solicitation appears to suggests 4 mobilizations (Sep, Nov, Jan and Mar). Is this a 7 month service agreement?

Gov’t Response: There are 4 each mobilizations for this project. Mobilizations are two months apart minimum.

4. In the specifications, the base requires the centerlines within the rubber removal area to be repainted during certain suggested rubber removal mobilizations. Further, it requires in 2.1.2 cleaning preparation of the pavement surface prior to painting, which is understandable. However, in 2.1.3 it refers to the removal of paint as well. Is it the governments intent to remove existing paint versus just cleaning and repainting.

Gov’t Response: The intent is to remove aircraft tire rubber on the runway and repaint where rubber was removed.

5. Specification Section 01 11 00.00, subsection 2.1.5 outlines the schedule of work and approximate dates in which the work will need performed. The LAK North End work and LAK South End work have overlapping timeframes. For example, September 2020 and March 2021 have work scheduled for both the North End and South End. Is the Government’s intention that work scheduled for September 2020 and March 2021, regardless of North of South End, be performed in close sequence of one another? Or should the Contractor anticipate separate mobilizations for work on the South End vs the North End that fall in the same month?

Gov’t Response: Contractor will work both ends on the same month mobilization.

6. Section B, Item 0004 of the solicitation shows a CLIN for “Airfield Rubber Removal Detergent….”. However the specifications, notably section 32 01 11.51, subsection 1.5.1, makes reference to rubber removal by waterblasting. Will waterblasting be acceptable form of removal for rubber on the airfield?

Gov’t Response: Detergent will be required. Waterblasting only to remove runway rubber is not acceptable.

7. Should chemical removal be the only acceptable method, and with the product being bio-degradable, will it be permissible for the Contractor to let the chemical product flow to the edges of the pavement and in the turf?

Gov’t Response: Contractor will minimize chemical product flow to the edges of the pavement and turf. Section 32 01 11.51 section 3.4 Cleanup and waste disposal that the worksite will be clean of by-products, debris and WASTE from removal operations. Contractor is to “submit a Waste Collection Identification and Disposal Plan describing proposed actions regarding waste collection, control, identification, and disposal to the Contracting Officer's Representative for approval prior to the start of work. The plan will address disposal methods and requirements for hazardous and non-hazardous wastes.

8. Will the govt. like the current paint within the rubber removal areas to be cleaned or entirely removed before repainting?

Gov’t Response: current paint within the rubber removal areas are to be cleaned. IAW ETL 04-2 Standard Airfield Pavement Marking Schemes, page 5 of 47 section 5.3.4 states paint marking should not be allowed to build up beyond a total thickness of approximately 1.02 millimeter (40 mils) which occurs after about five marking cycles. Although this is not in the statement of work, the intent is to prevent flaking of paint that could lead to FOD hazard for aircraft. Therefore if there are areas where flaking is evident, the paint should be removed before repainting.

9. Is the government intending to have additional work performed on this contract such as :

joint seal, spall repair, crack repairs, slab demo / replacement, replacing tie downs, and ground points ? Thought this was just a Rubber Removal and Re-Striping Contract?

Please look at page 4 from the SOW …. It reads as though you have these “work elements included in this contract”.

Gov’t Response: The intent is to not perform any additional work unless it is to repair damage due to aircraft tire rubber removal operations per SOW.