Con Edison contact information sheet, Sep 2001

NYC 9/11 Public Portal Document

EQUIPMENT DECONTAMINATION

Sampling Equipment

All sampling equipment will be decontaminated between each sampling station using the following procedures: * Wear clean surgical gloves (and outer gloves if task-required). * Dissemble equipment and place component parts on polyethylene sheeting. * Clean all component parts with detergent solution (Alconox or Simple Green) using a brush to clean inside and outside surfaces. * Rinse surfaces with potable water. * Rinse all surfaces with distilled water. * Allow all components to air dry. Reassemble equipment. * Wrap equipment in aluminum foil or in polyethylene sheeting. Tape sheeting closed with duct tape. ♦ Label equipment, indicating date of decontamination (not needed).

( ) Not needed

Containment and Disposal Method (Sampling Equipment)

Materials will be containerized (solids and water separately) and marked with a permanent marker indicating the site, date, and medium (solid or water). Containerized materials will be stored in a secure on-site location until characterized and disposed by Con Edison.

The decontamination area will be lined with polyethylene sheeting to capture any and all steam-cleaning fluids.

( ) Not needed

Drilling & Angering Equipment

Drilling equipment (augers and drill head) will be will be steam cleaned on-site beUveen boring locations.

During the drilling activities, a polyethylene liner will be placed under the drill rig to contain any potential spills resulting from equipment failure or leaks (e.g., motor oil, hydraulic fluid, diesel fuel, etc.).

( ) Not needed

Containment and Disposal Method (Drilling Equipment)

Drilling tools will be decontaminated in a 55 gallon DOT approved drum that is placed within a sheet plastic lined containment area. The drill head will be steam cleaned by parking the drill rig over the containment area. A 55-gallon drum will be placed under the drill head to collect the cleaning fluids. Any fluids that are not collected by the drum and are retained by the plastic lined containment area will be pumped into a 55-gallon drum. Wastes generated will be stored in the approved on-site waste storage area pending analyses of the contents of the drums. Upon receipt of analyses. Con Edison will dispose of the wastes in an approved manner.

( ) Not needed

7 WTC HASP 12

NYC-WTC_000165926