Nyob twj ywm rau thaum koj digging peb tes num tom ntej no raws li cov kauj ruam nram no:
Kauj Ruam 1: Hu rau 811
Hu rau 811 yam tsawg kawg yog ob hnub ua ntej koj khawb—qhov kev pab dawb yog dawb xwb.
Kauj Ruam 2: Xyuas thiab suam koj qhov chaw digging
Xyuas thiab khij koj cheeb tsam uas muaj ib yam khoom dawb xws li chalk, tsuag tsuag, hmoov nplej los yog npav whiskers, tags, tswg los yog thaum lawv tseem ua ke.
Kauj Ruam 3: Tawm hauv lub marks nyob rau hauv qhov chaw
PG& lwm tuam txhab uas muag yuav siv cov hlauv taws xob flags, tswg los yog pleev xim rau kos underground kab raws li cov american Public Works Association Uniform Color Code (PDF). Thov cia lub marks nyob rau hauv qhov chaw kom txog thaum koj tas digging. Lub marks yog valid rau 28 hnub.
Kauj Ruam 4: Siv handheld digging cuab yeej thaum digging tsis pub dhau 24 nti ntawm ntug
Tsuas siv tes digging cuab yeej, xws li shovels, tsis pub dhau lub 24-nti tsam. Tom qab xov koj qhov project, ua tib zoo backfill thiab compact av.
Xa ib daim ntawv thov hauv internet, thov mus xyuas Underground Service Alert North.