32 Ill. Adm. Code 351.710
Security
Section 351.710 Security
a) A logging supervisor shall be physically present at a
temporary jobsite whenever licensed materials are being handled or are not
stored and locked in a vehicle or storage place. The logging supervisor may
leave the jobsite to obtain assistance if a source becomes lodged in a well and
another logging supervisor or logging assistant trained under this Part has
been designated to provide oversight.
b) During well logging, except when radiation sources are below
ground or in shipping or storage containers, the logging supervisor or other
individual designated by the logging supervisor shall maintain direct
surveillance of the operation to prevent unauthorized entry into a restricted
area, as defined in 32 Ill. Adm. Code 310.