Definitions_and_Acronyms.pdf

2015 CDD AML Remediation Project

DEFINITIONS AND ACRONYMS

Definitions.

Mine terms:

Adit – A horizontal mine passage driven in from the surface.

Back – (“roof” in coal mining) – The ceiling of an underground mine working.

Collar – The surface opening to a shaft.

Collar set – The timber, rock, steel or cement stabilizer of a shaft collar.

Country rock – The ground material around an ore body; the ground material into which an ore body was deposited.

Crosscut – A horizontal underground mine passage driven perpendicular to the strike of an ore body, often to intersect an ore body from a drift.

Decline – A mine passage driven from the surface at an upward or downward angle from horizontal; often called an incline when driven at an upward angle; in hardrock usage a decline or incline can be driven from an underground level.

Deadly Gases and Lack of Oxygen can be present in abandoned mines that are not ventilated. Pockets of methane, carbon dioxide, and other deadly gases can form or simply displace oxygen with no visible sign. When these gases enter the body, muscles stop responding normally, thinking becomes clouded, and unconsciousness and death can occur.

Demonstration Test Anchor - An anchor which is performance tested to verify design assumptions and installation practices.

Drift – Usually a horizontal underground mine.

Dump – Waste rock removed by mining and deposited on the surface.

Explosives and Toxic Chemicals were often left behind when an active mining operation was abandoned. Explosives such as dynamite and blasting caps become very unstable over time, and can explode if disturbed. Storage containers, boxes, barrels, and drums deteriorate allowing toxic chemicals to leak or combine into highly dangerous mixtures.

Face – The terminus of an adit, drift, or crosscut; usually the horizontal surface that is being advanced by mining (the working face).

Foot wall – The country rock below an ore body.

Hanging wall – The country rock above an ore body.

Hazardous Materials are a substances or materials that the Secretary of Transportation has determined are capable of posing an unreasonable risk to health, safety, and property when transported in commerce, and has designated as hazardous under section 5103 of Federal hazardous materials transportation law (49 U.S.C. 5103). The term includes hazardous substances, hazardous wastes, marine pollutants, elevated temperature materials, and materials designated as hazardous (see 49 CFR 172.101).

Highwalls and Open Pits are located where large areas of the surface have been disturbed to get at minerals near the surface. Open pits can be filled with water that can be highly acidic or laden with harmful chemicals. Highwalls can be unstable at the top and the bottom and are prone to collapse. When approached from the top, the vertical edge of a highwall may not be seen in time or may crumble, leading to a fatal fall.

Level – Horizontal workings at different elevations (typically numbered 1, 2, 3, etc.).

Manway – A vertical underground passage with ladder for upward or downward movement of miners; can be in a winze, raise, or shaft.

Muck – Waste rock broken in mining and hauled to the surface dump.

Ore body – A mineral deposit removed for its mineral content.

Pillar – Usually a column of ore or coal left to support the back or roof or to support the hanging wall.

Portal – The surface opening of an adit or tunnel.

Polyurethane Foam. Polyurethane foam or “PUF” is a commercially available product consisting of a two part chemical system that is used to block mine openings.

Raise – An underground mine opening driven upward from below to access an overlying ore body or provide access to an upper level.

Rib – The side of an underground opening.

Shafts – Vertical mine openings that can extend hundreds of feet to the lower level of a mine. Open shafts can be concealed by mine debris, dirt, rock, and even water.

Stope – Spaces created in the rock where the ore vein is removed.

Subtle Hazards – More subtle hazards associated with AML’s include encounters with wild animals (e.g., rattlesnakes, Africanized bees, or mountain lions); exposure to bat droppings, hantavirus, radon and radiation; and toxic soil, water, and air contaminated with cyanide, lead, arsenic, mercury, and other toxins which may be inhaled through dust and particles or through contact with impounded acidic water. Africanized bees are common to the California Desert District. These hazards deserve special mention; sites containing bees should be dealt with cautiously or in cold weather.

Unstable Rock and Decayed Support include once solid beams and frameworks that may have been decaying for more than a hundred years. In many cases, there may be no support beams at all and the fractured roof or walls of the mine tunnel eventually collapse in response to vibrations and/or the force of gravity.

Winze – A winze is an opening in an underground mine that is sunk downward (as opposed to a raise, which is mined upward) from inside to connect lower levels. The top of a winze is located underground, in contrast to a shaft where the top of the excavation is located on surface.

Contract Terms: See SF 1442 Continuation.

Contract Time. See Period of Performance.

Contracting Officer. A contracting officer is an individual entrusted by an organization with the authority to enter into, administer, renew or terminate contract s, along with related determinations and findings.

Contracting Officer’s Representative (COR). The COR’s authorities and responsibilities are defined in the COR’s Designation Letter. The COR is authorized to clarify technical requirements, and to review and approve work which is clearly within the scope of work. This person is NOT authorized to issue changes pursuant to the changes clause or to in any other way modify the scope of work.

Period of Performance (also Performance Period or Contract Time). All calendar days allowed for completion of contract work. Includes all days of the week including weekends and holidays.

Project Inspector. A person assigned to perform detailed inspections of the project; interprets plans, specifications and submittal information; performs contract management to include: preparing change orders, monitoring progress, submitting payment request, verifying estimates, and inspecting work quality;

coordinates work with other inspectors, design professionals, contractors, officials and testing labs; and maintains detailed records and files for the project.

Quality Assurance. The actions taken by the Government to assess the Contractor’s results to determine that they meet contract requirements. The methods for quality assurance are described in the Quality Assurance Surveillance Plan (QASP).

Quality Control. Those actions taken by a Contractor to control the production of outputs to ensure that they conform to the contract requirements. The methods for inspecting for quality control are described in the Contractor’s Quality Control Plan (QCP).

Acronyms.

ACRONYM Definition

ACI American Concrete Institute

ASTM American Society for Testing and Materials

ATV All-Terrain Vehicle

AWS American Welding Society

BAE Biological Assessment and Evaluation

BMP Best Management Practice

CDD California Desert District

CMP Corrugated Metal Pipe

CO Contracting Officer

COR Contracting Officers Representative

FAR Federal Acquisition Regulations

HASP Health and Safety Plan

HAZMAT Hazardous Materials

HDPE High Density Polyethylene

MSDS Material Safety Data Sheet

MSHA Mine Safety and Health Administration Occupational Safety and Health

OSHA Administration

PI Project Inspector

PUF Polyurethane Foam

QA Quality Assurance

QCI Quality Control Inspector

QCP Quality Control Program

SOW Statement of Work