roof gutter covered with a square plastic green grid. green roofs covered with substrate. the area around the drain is mulched wit

accident area backfill black boiling bridge brown connection construction covered dirt distant ditch dividing drain drainage electricity excavation falling garden geotextile grate gray green grid grille ground gutter guttering house installation lane line maintenance mulch mulched narrow new pebble pebbles pipeline plastic plumber plumbing repair roof roofing roofs sewage sewer square steel stone substrate water wit yard