Letter L

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LAER Lowest Achievable Emission Rate
LANL Los Alamos National Laboratory
LAO Location Administrative Officer
LC-50 The concentration in air which is lethal to 50% of the test animals in a study.
LCD Liquid Crystal Display
LD-50 The experimental dose which is lethal to 50% of the test animals in a study. A convenient point of comparison between toxic materials with similar effects or target organs.
LDPE Low-Density Polyethylene
LDR Land Disposal Restrictions (RCRA)
LEA Local Enforcement Agency
LEC Local Emergency Coordinator
LED Light-Emitting Diode
LEL Lower Explosive Limit - The minimum percent by volume of a gas or vapor, which when mixed with air, will form a flammable mixture.
LEPC Local Emergency Planning Committee
LIH Licensed Industrial Hygienist, a title conferred under the Illinois (USA) licensing program for Industrial Hygiene.
LIMS Laboratory Information Management System
LLDPE Linear Low Density Polyethylene
LLRWPA Low Level Radioactive Waste Policy Act, 42 USC Section 2021(b)
LOAEL lowest -observed-adverse-effect level
LOIS Loss of Interim Status (for TSDF)
LPG Liquefied Petroleum Gas, aka Propane
lpm Liters per minute
LRAPA Lane Regional Air Pollution Authority (Lane County, Oregon)
LRPO Location Radiation Protection Officer
LSO Laser Safety Officer - The person designated by a site where lasers are used, who has responsibility and authority to ensure the safe use of lasers.
LSI The Laboratory Safety Workshop
LUFT Leaking Underground Fuel Tank
LUST Leaking Underground Storage Tank
LWDII Lost Workday Injury and Illness

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