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Eg, P W,g rNGl,\ EErs, INC. <br />Ra)nontl L Phw. P L:.. Pnnupal <br />lttaurrce t ee. I'l:.. Senot,lsso.Mles <br />ltn L\gu)tn. P Il . Senbr.lssrciatcs <br />hcensed: .17-CA.(O.FL.C.1. l.\. ll..KS. llL. 'll\..t/0\'l:.\.tl,R.P/|.l-\:.lt',l.lll.BnnshColunbtu'('-'t\'-1D-1 <br />I)ecernber 19. 201 7 <br />Citv of Santx Ana <br />ATTN. : Plumbing Inspector <br />PROJECT: <br />Brasstech Inc- <br />l30l Wilshire Ave <br />Santa Ana. Calilbmia 92705 <br />SUBJT--CT: PLL]MBIN(; PIPt, MAI.ERIAI- <br />The following are changes made in the field are acceptable by RPM Engineers <br />l. The use ofschedule 40 ABS plastic pipe for all waste sewer and vent piping above <br />below floor <br />2. The use ofschedule 40 galvanized or schedule 80 PVC for pumped drain piping in <br />Laboratory areas. <br />S incerell. <br />Maurice E. Yee <br />Protbssional Engineer <br />102 l)l.SCOl liRl. lrv inc. ('.1.9)61u . Icl 919-150- l)2t) I dr: 9.19-15.1-l1il <br />\\\t'tpDtPr.ct)nt <br />.t?-31-17 <br />,165 trI <br />rrt7