A o'o mai i la'au vili ma'a'a ma fa'atuatuaina, e gaosia e le TDS tulaga maualuga HDD (Horizontal Directional Drilling) paipa vili ma meafaigaluega.O a tatou oloa fa'alava fa'ata'atia maualuga e fa'ato'ilaloina galuega sili ona faigata.Mai le viliina i lalo o auala i le viliina i lalo o nofoaga tumutumu ma nofoaga maaleale o le siosiomaga, matou te tautuaina uma mea laiti laiti i le vaeluagalemu le lapopoa faalava itu vili vili.Aemaise lava matou te gaosia ma sapalai o la'au vili ma paipa mo HDD nei.