NYC-WTC_000233286

NYC 9/11 Public Portal Document

(1) Penetration Requirements. Penetrating encapsulants shall be applied and penetrate existing asbestos material to the substrate.

(2) Testing of Penetration. During treatment with a penetrating encapsulant, selected random core samples of asbestos material shall be removed and checked to verify full depth of penetration.

(3) Coior Requirement. Each coat of penetrating encapsulant shall be color coded as per manufacturer's recommendations, if any, except for the prohibition of pigment use.

(h) Methods of Application. Encapsulants shall be applied using airless spray equipment as follows:

(1) Spraying Pressure. Spraying shall be performed at the lowest pressure range possible to minimize asbestos fiber release.

(2) Spray Tip. The optimum spray tip shall be chosen on the basis of the viscosity and percent solids of the encapsulant. The cone projection of the tip shall be as specified by the manufacturer.

(3) Subsequent Coats. Each subsequent coat of encapsulant shall be applied at a 90-degree angle to the preceding coat application or per manufacturer’s specifications.

(4) Encapsulant Solvent or Vehicle. The encapsulant solvent or vehicle shall not be or contain a volatile material. It shall not release hazardous air pollutants, as defined by NYS DEC 6 NYCRR 200.1 (ag), into the air when applied or during curing.

(i) Encapsulant Fire-Resistance Properties. If the asbestos material has been used for fire retardation or protection of structural members or both, the encapsulant material used shall have a flame spread rating, fireproofing and smoke characteristics similar to the material being repaired or encapsulated.

(j) Marking or Labeiing. Encapsulated ACM, PACM, or asbestos material shall be conspicuously marked or labeled in order to warn persons of its presence.

(k) Cleanup. Waste cleanup shall be in accordance with Section 56-8.5.

(I) Final Cleaning and Clearance Air Sampling. Final cleaning and clearance air sampling shall be in accordance with Subpart 56-9.

56-8.8 Asbestos Materiai Encasement/Enciosure Procedures. The encasement/enclosure of existing ACM, PACM or asbestos material shall be conducted in accordance with the following:

12 NYCRR56 Subparts, Page 82

CITY_21MC100_0 03235102

NYC-WTC_000233368