Pennsylvania Code
Title 34 - LABOR AND INDUSTRY
Part I - Department of Labor and Industry
Chapter 13 - PROPANE AND LIQUEFIED PETROLEUM GAS
Subchapter C - MANUFACTURE OF NITRO AND AMIDO COMPOUNDS
TRINITROTOLUOL
Section 13.199 - Inflammable solvents

(a) The storage tanks of inflammable solvents or toluol shall be constructed in such manner that the contents of the tanks, in case of leakage cannot run over the surroundings. It is recommended that storage vessels be below ground. If such solvents are stored above ground, they shall be stored in an approved manner. Storage in open air in iron drums in a suitable place is permissible.

(b) Earth embankments of sufficient height to hold the contents of tanks in case of leakage shall be placed around all tanks of inflammable materials when such tanks are located above ground.