In addition to meeting the basic requirement listed below in Education, qualified applicants must possess: For the GS-11 level: Applicants must possess one (1) year of specialized experience equivalent to at least the GS-09 level; or its non-Federal equivalent that demonstrates: Experience assisting in the review of construction project preliminary plans, drawings, designs, specifications and cost estimates; advising/consulting with private groups, public bodies and other agencies on civil or environmental engineering and architectural aspects of projects; assisting in providing advisory and technical services in the engineering, planning and design process for projects that may include single or multifamily housing, wastewater facilities, businesses, community facilities OR 3 years of progressively higher level graduate education leading to a Ph. Specified academic courses -- Successful completion of at least 60 semester hours of courses in the physical, mathematical, and engineering sciences and that included the courses specified in the basic requirements under paragraph A. The courses must be fully acceptable toward meeting the requirements of an engineering program as described in paragraph A. Related curriculum -- Successful completion of a curriculum leading to a bachelor's degree in an appropriate scientific field, e.g., engineering technology, physics, chemistry, architecture, computer science, mathematics, hydrology, or geology, maybe accepted in lieu of a degree in engineering, provided the applicant has had at least 1 year of professional engineering experience acquired under professional engineering supervision and guidance.