Section 1. Any existing law to the contrary notwithstanding, salaries for the following positions in the Bureau of Public Works are hereby fixed as follows:
(a) Director, at eighteen thousand pesos per annum;
(b) Assistant Director, at sixteen thousand eight hundred pesos per annum;
(c) Chiefs of specialized technical or engineering divisions and regional supervisors, at fifteen thousand six hundred pesos each per annum; and assistant chiefs of the above specialized divisions in the central office, and district engineers III, at fourteen thousand four hundred pesos each per annum;
(d) Chief of other divisions in the central office, at twelve thousand pesos each per annum;
(e) Chiefs of branches under the specialized technical or engineering divisions in the central office including district engineers II and flood control district engineers, at twelve thousand pesos each per annum;
(f) Assistant chiefs of branches under the specialized technical divisions in the central office, assistant division chiefs of other divisions and district engineers I and public works in charge in city engineering offices, at ten thousand two hundred pesos each per annum.
The allocation of the above-mentioned positions shall be adjusted to the WAPCO ranges corresponding to the amounts herein provided.