Question

question: 24 of 30 remaining time: 02:52:38 << previous next >> clear flag finished which is not a structural stormwater runoff filtration system for marinas? catch basins and collection systems a system of closed ponds or ditches designed to settle and retain suspended solids and associated pollutants carried by runoff. sand filters - closed, self - contained beds of sand where stormwater runoff percolates downward to be collected in underground pipes and reused for irrigation or returned back to a drainage channel or buffer strips - areas of vegetated land separating the marina grassed swales - shallow, vegetated ditches to which all runoff is directed for slow filtration that prevents erosion, filters sediment, and provides some nutrient uptake.

Explanation:

Catch basins, sand filters, grassed swales are all structural systems for storm - water runoff filtration in marinas. Buffer strips are areas of vegetated land for separation, not a structural filtration system in the same sense as the others.

Answer:

Buffer strips - areas of vegetated land separating the marina