Questions_and_Answers_0001.pdf

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Attached to
POLYURETHANE FOAM FOR MINE CLOSURES Federal contract opportunity
Solicitation number
140P6423Q0027
Issued by
Department of the Interior National Park Service Midwest Region

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Solicitation #: 140P6423Q0027

Amendment #: P0001

Expandable Foam – ISRO

Questions and Answers listed below:

QUESTIONS:

Question # Question Answer/Response

1.3.31/23 We noticed there is no spec on the required PUF density, compression, tensile etc.…

Most solicitations have these types of specs and/or range to assure the correct strength foam is used for the expected performance.

- The technical specifications are based off the

Equipment-less Foam

Sealant (EFS) brand (or equal). The typical physical properties of the brand include: Core Density

(ASTM D-1622) of 2.6 pcf.; Compressive Strength

(ASTM D-1621) of 35 psi.;

Tensile Strength (ASTM D-

1623) of 45 psi.; and Shear

Strength (ASTM C-273) of

43 psi.

Specs provided to the Contract

Specialist. I believe these should address what is required for foam mixture.

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