Safety 1st Advancer Betreibershandbuch PDF herunterladen (Seite 19)

Environmental Remediation Drilling

Safety Guidelines

Page 19 of 132

2.4 - Positioning the Borehole

Some of the tasks involved in positioning the borehole can take place in the office. It is important to gather

all the relevant information about each site to assist in identifying hazards, locations, and the necessary

permits.

It is difficult to predict all problems that may occur during drilling fieldwork activities. Completing pre-

fieldwork preparations will help to ensure that the project proceeds on schedule and in a safe manner. The

project work plan should include (if applicable and available):

• Maps and figures showing underground and aboveground equipment, piping, utilities and/or any surface

or subsurface hazards,

• Historic site information (maps, photos, files),

• Site as-built drawings,

• Easement maps,

o Historic plot plans,

• Previous site investigations,

• Fire insurance plans,

• Tank dip charts, and

• Elevations and coordinates maps.

It is helpful to interview individuals who may have historical information. These individuals may be retired

at the time the work is conducted, but may still have information needed to help avoid damaging

underground facilities.

During pre-planning and site investigations, keep good notes, document preparation activities, question

personnel who have historic site knowledge, identify below and above ground providers and services, and

identify critical areas. Critical areas are those within ten feet of any structures or general high pressure

pipeline corridor. If critical areas are encountered, there could be dramatic health, environmental, or

operational impacts. Some examples of critical areas include: general high pressure pipeline corridors,

underground storage tanks (USTs), utility lines, areas between an UST and a dispenser, areas between a

dispenser rack and the building, areas within ten feet of the dispenser island canopy drip line, and overhead

power or utility lines. Critical areas should be twice reviewed and hole clearance procedures completed

prior to the drill team drilling.

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Safety 1st Advancer Betreibershandbuch Seite 19