I'd use the one with the "not only/but/also" construct: Thanks to his remarkable performance on the SAT, not only was he accepted into Harvard, but he was also given a full scholarship. "not only [fact A] but [fact B]". When you start with "not only" you're indicating that two facts A and B will be presented. Fact A is something that is already good enough (or bad enough) by itself and fact B ...
The Oxford English Dictionary defines but only (which can also occur as only but) as meaning ‘ (a) only, merely; (b) except only’, and comments that its use is now poetical.
Cal/OSHA enforces its PELs in workplaces under its jurisdiction. Cal/OSHA has established occupational exposure limits for compounds not included in the OSHA Z Tables. Please see Cal/OSHA Table AC-1 for additional limits, the most current limits, and other designations such as skin absorption.
mployee to a chemical substance or physical agent. PELs are established by the Oc. upational Safety and Health Administration (OSHA). In OSHA regulations, PELs are exposure limits to hazardous substances referenced in CFR 29 1910.1000 TABLE.
PEL stands for Permissible Exposure Limit. It is a legally enforceable maximum concentration of a hazardous substance, such as a chemical, dust, or noise level, that a worker can be exposed to over an 8-hour workday. These limits are set and enforced by the Occupational Safety and Health Administration (OSHA) in the United States, and employers who exceed them can face fines and penalties.
The OSHA permissible exposure limits (PELs), as found in Tables Z-1, Z-2, and Z-3 of the OSHA General Industry Air Contaminants Standard (29 CFR 1910.1000), that were effective on * and which are currently enforced by OSHA are listed on the page for each chemical in the Pocket Guide.