Page 6 - Alabama 811 Magazine 2019 Issue 2

HDD and Crossbores
ne of .1.e mos. ee..no.n.e.1 .1.. 1.o.e1.....e been located and venaes
.n..1....1s ... .ns.a11.ng .1.. s... ..n.1 dep.1. of .1.e ....1..y The
undugmund ....1...es .1... operator .n..s. a1s.. ens.... .1.... .1.e
1.as 1.e.n developnd .n dep.1. at 1... bore, ovcz ... ..nde. .1.e
mccnlhI~Ior_v1a .1.e use ... llunzontal ensung .n...s.n......., .s s..:r.e.en. ....
d|mct1o1ml .1n11.ng, ... HDD. By .1.e "backxcamcr" .1... 1.. .n..s. ....
uuhzmg e.....p.nen. .1~'socmlcd w..1. .1... w1.en p..11.ng .1.e 1.... 1.ead back ...
.ype ... technology, .n 1.»pemlor1~ not .1.. s.....ng pom! T1... "1....1..e.n..."
.eq....ed ... d.s....1. .1.e e...1. ... op2n- .s1a.ge. .1..n .1.e .n...a1 1.... head,
...ne1. .... .1.e ....1..y, Lhcreby, savmg en1...g.ng .1.e bum 1...1e eno..g1. ...
4 .1.e ed.-.s ... backfilllng and p...—s.1.1y ae....nn...d..e .1.e1.ne .1... .s 1.e.ng
fig . .e.g.a.s.ng ... re-s'odd|ng .1... work s..e pulled 1..e1.. n..s w1llpolcnt1ally
1 The ....e...... only 1..s ... d.g .n one ...... e1.....na.e .1.e nsk of . emss 1....
, .... the ...~.n pumts and ..ny branch
W — ..n... .1... -..... .... .,.....1.. n... 5°rW‘;"*§0”L'3lhiPP$ji"‘;*'° Lh
_, _ p|pL‘l1n£. This pmtcsa .... pulenually "gm; °' ff; "° Vin‘) 3 Aw
1 a Ihcopuramrnmcandmonny ° 3 “W ' "f '=§;l°"- fdbc
I .., V W1... cumpleung Lhc .....,e... "50, ...... E‘; °*5'_°“" P"l‘f C; (“I = =f" _
1 ’ ‘I 1. .~ wmng w1lh 1}.a.7" one rmgh. ...-k. 44:2‘::;‘:§'fi‘;:‘;‘l{‘fL]‘3‘E):*:‘u‘:|:mmI
' ' ‘ N...1..ng .. wmng .....1. .., as long as ... mjury ... de...1. ... .1.e ope...... .nd
;{,:’;:f‘§::;f;W Smy .1.e personnel opzratmg .1.e HDD anyone s.and...g elose ... .1.e HDD
Wm WM Sam WWW eq...p.ne... ..ke every p...s.1.1e e...np.nen.. A telecommunications

pmcauunn ... e1..n.na.e .1.e poss.1..1..y e..1.1e .1... smes .1.e ..ea's 1:911 sys.e...
... em.-s 1....es. cn.ss 1.o.es ..e denn.d e....1d be da.n.ged, s1......ng dawn .1.e
as ".1nInler~cct1on ... .n exlshng 911 sys.en. ... ...1... local ... nauunal
undugmund ....1..y ... underground ea.n.n..n.e.....ns ~y~lcms. Hosp..a1s,
s.n.e....e by . seeund ul|I|ty 5... rcspondL‘r~ ..n.1 ...1.e.. .n.g1..1.e
.es..1..ng .n .1..e.. contact 1.e.ween nzgauvcly affected by . .1.....age.1

.1.e u'ansact1o11~ ... .1.e ....1...es .1... .e1.e.....n...n.e......ns ..1.1e. A natural
e..n.pn.n..s.s .1.e .n.eg...y of e..1.e. g.s ... 1..za..1..... 1.q...d 1.ne .n.g1..1.e
....1..y ... undnrground s.n......e." punctumd, ~L‘ll|ng .1.e s...ge .... . Hm ...
T1..s does not .e1..e only ... on. we cxpk:~'11.m. En......n...en..1 .ss..e. .n.g1..
... ....1..y. A11....1...es a.e .. nsk when a1s.. came mlo play. A ~.1n|t.1r_v se...e.
HDD eq...pn..n. .. not used s.1e1y .. 1.n. e....1d be xuplumd by . na...n.1
cormtlly. g.s ... e1ee.ne 1.n. T1..s could 1e.d ...
HDD mum the M of R ‘mung cloggmg of .1.e sewer 1.ne. w1.en .1.e

_ ,, local p1..n.1.e. ...e.np.. ... unclog .1.e

sonde .n .1.e dn111..ad and .. mcmvcl, mm 1“ mg.“ “mm the w ‘W,
ope.a..d by a ".p.....e.," above gmund ' P 5
Icadmg ... n....n.1 gas m1gml|ngmlo

.1.a. 1e.. .1.e upcmlox kn...» .1.e dep.1., . ..n.e....e 0. .1.e tlucmc 1.ne ea..1d
duecuon .nd unenlallon ... .1.. dn11 mm m my ‘D W lumbm Whm hm
d..111.ead....ne.e..~e ... de...-.... .1.e Tim Emnbfl of mm”! mblflm ‘
dep.1. ... e1...nge .1.e duncuon of .1.e I. mggmng bu‘: can be lip‘ to R’

bum 11.. opnratux and .1.e "~pDllcx"

m|n1mum. Take .1.e ne.essa.y .....e .nd
w....1d normally chuck .1.e .1.p.1. and
em... ... p......ve1y |dcnt1iy .nd tunflzm

““‘°°“°“ W1“ 5°” ““°’ W“ b°"“$ .1.e lomlmn ... .11 ulhcr ....1...es in .1.e
md 1..s been pushed mlo .1.e ground. am r‘m to bc mm“ 1“ ‘Wk
Somuumcs, .1... r_he:k1~' .n.de mum ‘ P 5‘ 5‘ —" ’
often depend.ng on W1... .1.e ope...... Le.'s n.n..n..e ... work s.:e1y .nd knup
needs ... ..e..n.p1.s1. on .1.e bum. A A1.1...n.. .1.e g.ea. p1ae. .. .. ... work,
prudnm operator ens...es .1.a. ..11 other hve ..n.1 play. .

..n.1e.g.....nd f.1ul|t1£~ .n .1.e area of

4 . ......m..... 2.... ....2