Salaried means an employee is paid a fixed amount per
calendar time (per week, month, or year). The word "salaried" doesn't specify the
amount, just the
structure of pay.
The alternative is "hourly" where the employee is paid per hour worked or "piecework" where the person (typically not an employee) is paid per unit of work (bushel picked, unit assembled, etc)
From the original quote: "These 30-hour employees will be salaried and receive the same benefits" means:
"These employees will be salaried [not hourly]." and
"These employees will receive the same [non-cash] benefits."
Nowhere does it say nor imply "These employees will receive the same salary."