925-92500 Engineering Services, Professional | 925-92523 Dam Engineering | 925-92528 Drainage Engineering | 925-92536 Engineering Services (Not Otherwise Classified) | 925-92546 Geotechnical Engineering | 925-92556 INSPECTING, STRUCTURAL ENGINEERING | 925-92561 LAND DEVELOPMENT AND PLANNING ENGINEERING | 925-92570 Municipal Engineering | 961-96141 GLOBAL POSITIONING SYSTEMS (GPS) SURVEYING SERVICES (INACTIVE, PLEASE SEE COMMODITY CODE 961-64 EFFECTIVE JANUARY 1, 2016) | 962-96252 MAPPING AND GEOGRAPHICAL INFORMATION SYSTEMS (GIS) SERVICES, INCLUDING CARTOGRAPHY AND SURVEYING SERVICES, NOT AERIAL, (SEE 920-33 FOR DIGITIZED MAPPING SERVICES AND 905-10 FOR AERIAL MAPPING AND SURVEY SERVICES) | C-00450 ENGINEERING | C-02030 CIVIL ENGINEERING | C-02060 CONSTRUCTION MANAGEMENT | C-02080 DESIGN/CONSTR. MONITORING | C-02110 ENVIRONMENTAL ENGINEERING | C-02120 ESTIMATING/COST ANALYSIS | C-02220 HYDROGRAPHIC SURVEYING | C-02250 LAND SURVEYING | C-02280 MATERIAL TESTING | C-02370 SOILS ENGINEERING | C-02380 STRUCTURAL ENGINEERING | C-02410 TRANSPORTATION