110 STAT. 1582 PUBLIC LAW 104-180—AUG. 6, 1996 NATURAL RESOURCES CONSERVATION SERVICE CONSERVATION OPERATIONS For necessary expenses for carrying out the provisions of the Act of April 27, 1935 (16 U.S.C. 590a-590f) including preparation of conservation plans and establishment of measures to conserve soil and water (including farm irrigation and land drainage and such special measures for soil and water management as may be necessary to prevent floods and the siltation of reservoirs and to control agricultural related pollutants); operation of conservation plant materials centers; classification and mapping of soil; dissemination of information; acquisition of lands, water, and interests therein for use in the plant materials program by donation, exchange, or purchase at a nominal cost not to exceed $100 pursuant to the Act of August 3, 1956 (7 U.S.C. 428a); purchase and erection or alteration or improvement of permanent and temporary buildings; and operation and maintenance of aircraft, $619,742,000, to remain available until expended (7 U.S.C. 2209b), of which not less than $5,835,000 is for snow survey and water forecasting and not less than $8,825,000 is for operation and establishment of the plant materials centers: Provided, That appropriations hereunder shall be available pursuant to 7 U.S.C. 2250 for construction and improvement of buildings and public improvements at plant materials centers, except that the cost of alterations and improvements to other buildings and other public improvements shall not exceed $250,000: Provided further, That when buildings or other structures are erected on non-Federal land, that the right to use such land is obtained as provided in 7 U.S.C. 2250a: Provided further, That this appropriation shall be available for technical assistance and related expenses to carry out programs authorized by section 202(c) of title II of the Colorado River Basin Salinity Control Act of 1974, as amended (43 U.S.C. 1592(c)): Provided further, That no part of this appropriation may be expended for soil and water conservation operations under the Act of April 27, 1935 (16 U.S.C. 590a-590f) in demonstration projects: Provided further, That this appropriation shall be available for employment pursuant to the second sentence of section 706(a) of the Organic Act of 1944 (7 U.S.C. 2225) and not to exceed $25,000 shall be available for employment under 5 U.S.C. 3109: Provided further, That qualified local engineers may be temporarily employed at per diem rates to perform the technical planning work of the Service (16 U.S.C. 590e-2). WATERSHED SURVEYS AND PLANNING For necessary expenses to conduct research, investigation, and surveys of watersheds of rivers and other waterways, and for small watershed investigations and planning, in accordance with the Watershed Protection and Flood Prevention Act approved August 4, 1954, as amended (16 U.S.C. 1001-1009), $12,381,000: Provided, That this appropriation shall be available for employment pursuant to the second sentence of section 706(a) of the Organic Act of 1944 (7 U.S.C. 2225), and not to exceed $110,000 shall be available for employment under 5 U.S.C. 3109.