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ST8201-CS 881228 (2) GINN, INC. December 28, 1988 CONSULT EN{ INEERS L. H. Lacy Company 10888 Shady Trail P.O. Box 541297 Dallas, Texas 75354-1297 /~t ]ofLO~ioBnelt Line Road ~~o~=~-i6" Water Line Relocation Dearer. We have reviewed your letter of December 13, 1988 regarding your proposed sequence of construction for this item. Our main concern is that you coordinate the main line shut downs with the Department of Public Works and the affected businesses and property owners, and that the level of water stored in the elevated storage tank be continuously monitored during shutdowns. We also suggest that the new line be flushed, chlorinated and tested prior to Step 4. This may serve to prevent a situation in which the main line would be removed from service and something unexpected happen to the untested, unchlorinated new line which would prevent its immediate use. Please call me if you have any questions. Sincerely, John C. Karlsruher, P.E. Project Engineer enclosures cc: H. Wayne Ginn, P.E. Russell Doyle, P.E. Randy Fleming, w/2 enclosures Steve Goram, w/2 enclosures 1711)3 Preston R{,ad · Suite I00 · I.B 118 · Dallas, Texas 75248 · I"honc 214/248 4900 i._ETTER !IF -,-o,- =,., L. H. LACY C;QMP'ANY DATE TO: OI.--_OEMBER l:];,, - ,~oo GINN, INC., CONSLILTING ENGINEERS !7~-©:3 PRESTON ROAD SLti-FE i()(>, LB-). i~5 OALLP, S ~ TEXAS 7524.3 ;:'~ F Fi'l: F'F:<O J ECl','; DENTON TAP ROAD Ir.IF'F~C)VEME-'NT FROM BELT LINE I'D SANDY LAKE ,, , .Ud_L I RE: ...... ~' !c" WAFER LINE' F,:EL[]CATION iT'FM ,~:o,~ c - ' DEAR JOHN, iN REG~RDS TO 1-HE CONSFRUC'rZON .0F ][HE.,~" WATBR LINE NE. : .:.:.:.. · ,~01 G,.,E ,,L FOLLOWING: 1) TIE-IN ~1; ISOLATE LINE, INSTALL 16" TEE WITH SOLI-D SLEEVE ON END WHERE EXISTING PIPE IS TO BE REMOVED. INSTALL 2-16" BUTTERFLY VALVES, 16" 45 DEGREE BEND~ RE ]f N E~IorI~ G 16" 'TO SERVICE. IN TAI_.K~NG TO 'TI4E CITY THIS WORK IS BEST DONE AT THIS TIME OF YEAR BETWEEN THE HOURS OF :LO: .)() AM TO 5: 2) TIE-IN ~ 2: SAME AS TIE-IN :~1. 3) STET' THREE; INSTALL 16" LINE BETWEEN VALVES, INSTALL ALL BLOCKING EXCEPT TYPE 1 THRUST ~LOC~S, INSTALL 2 BLOW-OFF VALSE~ ON NEW LINE IN~,~DE GF BUT-rERFLY VmLVES. THIS WORK WILL BE DONE DURING THE REGULARLY S~]H~DULED WORKDAY. 4) "'-~''=F~:F FOUR - TI RN' NEW ~" LINE OVER TO '*~ ' ' '~. I,~OLA,E . .,h~ .... ]~'..~ ON BETWEEN BLIND FLANGE SF '~*~' r' ~- ~ ~'c~= LINE. POUR ~v~ T .... AND OLD 16" , I.. 1,4 '" ~ I THRUST BLOCKS t[::MCf~WLNG ,,.~..,= ;, ,,~.4 ¢ CHLORINATE *' TEST THE NEW LINE. 1UF~ 4 NEW I~, FO ~:~I-~- R;' [F(I~ TIME: OF YEAR '['HIS WORT:: [E~ E~E]ST ).)C)i'[E BE-TWE[:i'q THE H] iRS i]F L':~)i) APl %3 5) REMOVE OLD L. H. Lacy Company General Contractors 214/357-0146 ....... I b8'88 Shady Trail P.O. Box 541297 Dallas, Texas 75354-1297 ~TE ~ TO: RE: DEAF,: ,JOI4N~ i.[E-FTER (IF -rF<AN.'3M I TI"Ai_ ~ Y L. H. , .' '.v COMF'ANY iSINN, iNC., CONSULT[h.!(3 ENI.',"INEERS 17!0}~ PRESTON ROAD DALI_AS, TEXAS DEi,J]'ON ~AF' R.),~,.,. IIIF ,L,,cE~I~::i'4F FROM EIELT LINE ]u SAi',JDY LAKE i?'EM, ~-c:,'~ 9 16" [,,',]Lt L,]:NE RELC]CATJ:ON iN REGARDS 't'O THE CONSFRUC'I-iON OF THE i~" WA"ER LINE WE F'ROF-'OSE THE Fn. n~'~..-- 1) TIE-IN ~1; ISOLATE LINE, INSTALL 16" TEE WITH SOLId) SLEEVE ON EHD WHERE EXISTING PIPE IS TO BE REMOVED. I,q,~IALu 2-16" BUTTERFLY VALVES, 16" 45 DEGREE BEND~ RE'FUF'N ~v..-- ~ ~ .., I~rli4G i~ 'T'O SERVICE IN T" -- ~I_,-.ING TO THE CITY THIS WORK iS i)EST DONE AT THIS TIME OF YEAR BETWEEN THE HUJK.= OF l(~= AM TO 2) TIE-IN ~ 2; SA~E AS TIE-IN :3) ...... ,-' T ' - ' ;ur[., HREE: [N,:TALL ~S,, LINE BETNEEN VALVES. ZNS'T~LL ~LL BLOCKING EXCEPT TYPE ] THRUST BLOCKS~ INSTALL · '~ Eq OW-OFF V ~-" ' ..... AL~EU ON NE~ LINE ~NSi[DE OF BUT'rERFLY VRL. VES. TH[S NORK I~ILL BF: DONE l)l RJ'NG FHE REGULaRLy 4~ STEP FOUR ..- TURN NEW 16" LINE OVER TO ':~"-' ' '- , ,~ - ~ - ~cr~[C,E, [SOLATF FIE-IN 'rc',:,:: ,,~ ...... ..,4].. OLD 16" LINE. POUR ~o~ 1 THRUST ......... LL. Ri IA,= * I-ESr IHE ~IEN L.,I.~tE. =~ ) :: L.. ~lJVE: ()[.-D L_ L FIE:., - .:];) PM. L H. Lacy Company General Contractors 214/357-0146 ']b888'Sh dyT il a ra P.O. Box 541297 Dallas, Texas 75354-1297