B7 Generator UST Sensor Replacement - Solicitation RFIs Responses.docx

03/27/2023 Response to Questions B7 Generator UST Sensor Replacement :

1).Bidders need to make sure use the subcontracting services from below Company:

Mass Tank 29 Abbey Lane Middleboro, MA 02346

(508) 947-8826 sales@masstank.com https://www.masstank.com We’ve been told Mass Tank usually uses their subcontractor below for work at our station. Bidder shall verify this with Mass Tank please.

Kingston Industrial Services in Thornton, CO POC: Darren Lee Curtis Other questions:

2). What is the depth of the tank?

Please see the provided drawings of the Xerxes tank for its size. Drawings state 6-foot diameter double-wall tank, capacity 5,000 gallons. See Manhole submittals and Page 21 of the provided Xerxes Installation Manual and Operating Guidelines from when the underground storage tank (UST) was installed for more detailed dimensions. Riser height is not specified in the literature and will need to be field verified. Contractor shall field verify all dimensions and existing site conditions prior to beginning work or ordering materials.

3). Is the current concrete pad on compacted dirt with gravel underneath?

Yes, VA believes this to be the case. Please see the provided literature for what should have been used for the primary and secondary backfill requirements when the UST was installed.

4). What is the depth of the repair work?

Please see answer to Question #2 and the provided drawings and literature.

5). It States that the Contractor is responsible for all applicable fees, permitting and inspection costs associated with this project. What permits are required?

VA anticipates no permits will be required for this project, according to WY DEQ, but Contractor shall verify that no other permits are required for the work under this project.

WY DEQ needs to be informed of when project work will begin in case they wish to inspect while the work is done. Point of contact info below:

Mr. Oma Gilbreth Storage Tank Program (STP) Compliance Supervisor Solid and Hazardous Waste Division Department of Environmental Quality 200 West 17th Street Cheyenne, WY 82002

(307) 777-7097 Fax (307) 635-1784 Testing and Data Submissions Should be Sent to: DEQ.STP@WYO.GOV Storage Tank Program (STP) Website: http://deq.wyoming.gov/shwd/storage-tank/

Also, Scott Forrester- 307-675-5678. He is local and the likely inspector that would be attending.

Please note our biannual State inspection is happening May 3rd. VA desires to have this project completed by then if at all possible.

6). Can we reuse the gravel we are removing to do the repair?

Yes, the gravel can be reused if doing so meets the Xerxes installation guidelines and does not void the UST warranty.