acle ▁( road , ▁side walk , ▁drive way ). ▁ ▁Util ity ▁loc ates ▁must ▁be ▁present ▁for ▁any ▁under ground ▁work , ▁the ▁path ▁most ▁clear ▁of ▁util ities ▁is ▁chosen ▁to ▁send ▁the ▁tool ▁through . ▁ ▁The ▁first ▁hole ▁is ▁now ▁d ug ▁on ▁one ▁side ▁of ▁the ▁obst acle . ▁ ▁This ▁hole ▁must ▁be ▁large ▁enough ▁to ▁fit ▁the ▁tool ▁and ▁the ▁operator ▁in ▁it ▁so ▁they ▁can ▁aim ▁the ▁tool . ▁ ▁The ▁hole ▁also ▁must ▁be ▁deep ▁enough ▁that ▁as ▁the ▁tool ▁compact s ▁the ▁ground ▁the ▁surface ▁remains ▁und ist urbed . ▁ ▁The ▁depth ▁of ▁the ▁starting ▁bore ▁pit ▁depends ▁on ▁the ▁type ▁on ▁soil ▁that ▁is ▁being ▁worked ▁in ▁and ▁how ▁well ▁it ▁compact s . ▁ ▁The ▁operator ▁a ims ▁the ▁tool ▁to ▁the ▁desired ▁exit ▁point ▁and ▁allows ▁it ▁to ▁perform ▁its ▁function ▁creating ▁a ▁bore ▁hole ▁under ▁the ▁ground ▁without ▁disturb ing ▁the ▁surface . ▁ ▁The ▁tool ▁is ▁track ed ▁by ▁the ▁operator ▁who ▁feels ▁the ▁tool ▁p ounding ▁and ▁can ▁approximate ▁the ▁tools ▁location ▁under ▁the ▁ground . ▁ ▁The ▁operator ▁also ▁mon itors ▁the ▁surface ▁to ▁make ▁sure ▁that ▁it ▁is ▁und ist urbed . ▁ ▁As ▁the ▁tool ▁ne ars ▁the ▁exit ▁point ▁it ▁is ▁slow ed ▁down ▁and ▁an ▁exit ▁pit ▁is ▁d ug ▁to ▁locate ▁both ▁the ▁tool ▁and ▁the ▁bore . ▁ ▁As ▁the ▁tool ▁enters ▁the ▁exit ▁pit ▁the ▁operator ▁cho oses ▁to ▁either ▁dig ▁up ▁the ▁tool ▁to ▁retrieve ▁it