Mansions Phase 1-LR 980629 UTILITY fi. ND ENVIRONMENTAL SERVICES, INC.
P. O. Box 542015 · 1965 California Crossing
Dallas, Texas 75354
(972) 556-2913
6/29/98
......... 't, ',, ;' Metroplex Excavating
':5 !.'.; .',:'""~F,~ ."~.,i.L
.~ .,. ~: ..I I~ The Mansions by the I~3ke Ph. II
i v CoL~pe].1 .....
· f'-~ '.:. ? I"C !'!2 !?. Larry Davis
Utility & Envircnmental Services, Inc.
;', '{ '-, I': ? >.'. Enricrue Calvillo
Utmty & Environmental Services, Inc, '-
LOW PRESSURE AIR TEST FOR GRAVITY SA~NITARY SEWER
T.~,q ?rocedur~:
Ea~ section cf se'~,¢r shall be tested between successive manholes.
Ab' ~ha'l be Latroduced into the pipelbe umil 4.0 psi gauge pressure has been reacbe, d. At that tLme the
rex:luced a:d the internal aiz pressure shall be mai.at',tined between 3.5 and 4.5 psi gauge for at least t~o
d.~ ~.[r temperat,..,e to come to equ. iLibriu.m with the temperature of thc pipe waJJs. Pressure in thc pipe sh~ b: :cas:az.'..'.
moeJ. tored by a gauge and bose arrangement sepazate from the hose used to introduce ~ into the ~e. Pressure in the
p.l, pe shall not be atlowed to exceed 5 psi.
M:er '~-e temperatuse has stabi!i~ed a~d no air leaks at the plugs have been found, the a~r press,re sba]] be used ',c
d..e.£crm!n: tke tL.mc ':. '~
..p.-~ required for the aJ.r pressure to drop to 2.5 psi gaug'~:.
~d ~e r:?e !apse req:,:.'e:l for the a.Lr pressure to decrease form 3.5 to 2.5 psi exceeds th. at sI'.o',a= in the faEew:--g
pipe sha'_i b= pres'.'.med to be within acceptable limits ['or leakage.
ff .'.he ':"-e lapsed is '.ess than that shov, m in the table, the contractor sh~ make correctious to reduce the le~:a,~=
ac,w. pt able ~i[S.
Ii IJne Information Test Results .~r Test Mandrel
I Lme ; Station ~o Station Pi~e Size L.F. Tested Time Passed? Passc,45--
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