G9138F o se maualuga-saosaoa, maualuga le lelei, maualuga saʻo ma tele oloa atiaʻe e le SDLG ina ua maeʻa suʻesuʻega atoa o manaʻoga maketi, lea e mafai ona faʻamaeʻaina ai le faʻaleleia o le eleele ma le gaogao, slope scraping, bulldozing, kiona lafoaia, gau, compaction, tufatufaina o mea, fefiloi. , ma isi, ma e faʻaaogaina lautele i auala tetele, malae vaʻalele, inisinia puipuiga, fau o laʻu, fausiaina o auala, faʻaleleia o le vai, faʻaleleia fanua faʻatoʻaga ma isi tulaga faufale.