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Margin of Margin of 11/4-,44" ®® Building <br /> excavation pipes <br /> 7-water{pr ) / ®• 801 <br /> expo <br /> 4", _ ® o•®®®® �..,®®. Tank Vent,40"deep <br /> ®.� ® Berm <br /> 1"to ® ®'r r ®r Notes <br /> s • Sam <br /> jQwn*k <br /> level alar ® .�'- % . Casini® 1.Dimensionsshown <br /> w 8", "ctaro approximations <br /> an <br /> 2.Piping within the <br /> Standpipe � Margin s exposed <br /> or <br /> • �i <br /> ® ,'® ®®® ®® I Sample® i/ pipes"has n <br /> .» ._._....._�....._..._.-Y_.._._...*......_._...• <br /> hole ®y1.® located visually <br /> 1 1 ® ®c ®♦ Iron { gal, " l-to t21.11 projected ank surface) <br /> ) ; 3.Sour of Information: <br /> valve ..... 1. -Evidenceof <br /> ® / ® ®� ®..® : : i Piping in <br /> r 1% r•®®int ®® % i excavation <br /> ®® ®® ®""'. : : : : : . : : : : : : : : : : : ------®'r---�✓--- . ata regarding <br /> /g 1 ®®• ' ' ' : : ' ' s ; ; ; depths and uses <br /> ®®® . . . . . : : : <br /> of piping provided <br />} ®®®® i ® ; ' : : . : : : : : X21/2",40"deep' by utility locating <br /> ®P® `• : : : : : : : : : : : : : ' : : :00 services <br /> 4.Pipes known,not <br /> do 00 <br /> ,f TO / end located: <br /> sg ••~'•.. ..........:.......:.:.:... ....._......................... > -East-west pipe <br /> 41 , .............. <br /> pro <br /> k { gal) ®tea�y.. Concrete slab run draining <br /> ® (tank ) e Shoring building Into <br /> Steel cover side or end of <br /> i <br /> le:Feet 4000 gal.tank <br /> /Electrical, <br /> East-west pipes <br /> connecting top of <br /> (not ) i 0 1 3 5 : 8000 gal.tank <br /> Figure 1. Building 801 washdown retention sySteM showing excavation(9/89). <br />