QUESTIONS_7_3_2019.docx

1. On page 1 of Form 1442, within item 10. THE GOVERNMENT REQUIRES PERFORMANCE OF THE WORK DESCRIBED IN THE DOCUMENTS. Response Date is July 8, 2019 at 9:00 am. On page 46 of the solicitation package, under item 5, DIRECTIONS FOR THE SUBMITTING PROPOSALS. The Offer closing Date: 7/28/19. Please confirm the Bid Date is 7/28/19.

RESPONSE: Closing is July 8, 2019 @ 9:00am

1. Contract Duration, on page 1 of Form 1442, Section 11, The contractor shall begin performance within 30 calendar days and complete within 365 calendar days after receiving NTP.

On page 19 of solicitation, 52.211-10 COMMENCEMENT, PROSECUTION, AND COMPLETION OF WORK in sub section (c) Complete the entire work ready to use not later than 180 DAYS.

Please verify 365 calendar days is the proper duration for project completion.

RESPONSE: Project duration is 180 days.

1. Is this project "Tax Exempt"?

1. In SPECIFICATION SECTION 33 27 15, PART 2 PRODUCTS, 2.1.2.3 Well Screen

Please provide technical construction data for the well screen construction. Such as open area/intake area, transmitting capacity, yield strength.

Response: The Contractor will submit their materials to the Government for approval. The technical data should be provided by the manufacturer and approved by the Government.

1. On drawing page B-501, the WELL SCREEN DETAIL FOR "D" TYPE WELLS, the 235-wire wrap as shown in diagram B5 is no longer available from Johnson Well Screens. Please advise.

Response: Contractor will submit their materials to the Government for approval. If 20-inch 250-slot well screen is not commercially available, the Government will review the Contractors alternative submittal.

1. Drawing page B-502, Bois Brule Relief Well Package 7 provides the Relief Well installation schedule. Can this sheet be provided in an EXCEL format?

Response: No, the table will not be provided in excel because this format can be easily changed.

1. Drawing page B-502, Bois Brule Relief Well Package 7, NOTE 1. *VARIANCE REQUEST REQUIRED FOR LESS THAN 20' SEAL. Will the Government provide these variances prior to NTP?

Response: No, the variance is the responsibility of the Contractor.

1. In SPECIFICATION SECTION 33 27 15, 3.3.3 Filter Pack Procedure.

Question being, this is an indication that the borehole is cased for the total design depth to be drilled, is it the Corps of Engineers intent to require the borehole be cased from ground surface to the total depths for each well as shown on drawing page B-502?

Response: The temporary casing should be used at the surface only to provide stability while drilling and installing the relief well, however may be used the entire length as needed.

1. In SPECIFICATION SECTION 33 27 15, 3.6 WELL SEALING states, After each new well has been developed the annular space above the filter pack shall be backfilled by extending the filter pack a minimum of 5 feet above the top of the screen, sealing with a 5 foot seal of bentonite pellets or chips, hydrated and sealing the remainder of the space up to the base of the concrete pad with concrete.

Question, the text in this paragraph does not meet the diagram shown on Drawing page B-501 in the TYPICAL"D" TYPE RELIEF WELL regarding the footage of the bentonite seal. Should bentonite seal be 2 feet or 5 feet?

Response: 5 feet

1. In SPECIFICATION SECTION 33 27 15, 3.3 PLACING FILTER PACK, 3.3.1 General. The last sentence of paragraph states, the filter pack shall be disinfected during placement by the addition of 70% hypochlorite to the pack in proportion of 2lbs. per ton. Please verify this is the correct ratio.

Response: That ratio is incorrect. The specification will be changed to “applicable state regulations”.

1. On drawing page B-502, the column titled BLANK DEPTHS (BGS) indicates the depth of the top and the bottom of each pipe section should be measured from GROUND SURFACE ELEVATION. The Column titled BLANK ELEVATIONS indicates the blanks should be measured from the DISCHARGE ELEVATION. Please clarify which is the correct elevation to calculate from.

Response: The blank depths should be measured from below ground surface (BGS).

image1.jpeg image2.jpeg