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06/12/2006 <br />09:46 6613257063 DIMAG PAGE 03 <br />Assembled Ismer Wall and Outer Wall tank collar with aiternate top closing ring. (Some tank <br />January 31, 2005 <br />John W Johnson <br />John W Strobel <br />Co -President; <br />DTIMAGGIO M/1.1NTENANCE <br />Amh.itcct <br />P.O. Box 22407 <br />Assembled inner and outer rnulti-walled top hat with cover seal and installation ring. Drawing <br />Bakersfield, CA 93,390 <br />Brian .F, Zita <br />4. <br />Co-Pricsidcnt <br />RE: STA'K'E REGISTERD PROFESSIONAL ENGINEER APPROVAL <br />Archir= <br />CCR Title 23 Division 3, Chapter 16, Section 263(h) Secondary Containment <br />Dwg. DM48RO outer round riser <br />CCR Title 23 Division 3, Chapter 16, Section 2637 <br />John.13. Hicks <br />DWAGGIO MAINTENANCE FIBERGLASS DOUBLE WALL TANK SL11V[P <br />Vice President <br />MUFTI -SIDED OR ROUND IN VARRIOUS SIZES <br />Regional Managers I have =.mined and reviewed the following items on the DIMACjQTO M/\W1`ENANCE Double <br />Jesse F. Macias Wall Tank Sumps: <br />}toy W. Pcdro 1. <br />Assembled Ismer Wall and Outer Wall tank collar with aiternate top closing ring. (Some tank <br />Alan K. Shimabukuro <br />manufacturers must install the tank collar,, othei:s will allow this to be installed by DTMAGGiO. <br />John W Strobel <br />Drawings DM48CAT and DMA48CAO <br />2. <br />Assembled multi -sided sump riser. Drawings DM450 and DM451, <br />3. <br />Assembled inner and outer rnulti-walled top hat with cover seal and installation ring. Drawing <br />DM48TIiO. (DM48THR required for round sump riser.) <br />4. <br />Observed the placement of the top hat into the riser and the top hat cover rind; onto the tip hat, <br />5_ <br />Dwg. DM48OR inner round riser <br />6_ <br />Dwg. DM48RO outer round riser <br />7. <br />Dwg. Double wall sump installation - Detail of ass-ombl.y connection. <br />8. <br />Dwg, Double wall sump 3c top hat testing installation instructions and detail - <br />9. <br />Dwgs_ DM33R and DM48R top hat adapter rings <br />10, <br />All Fiberglass used must be UL approved for petroleum products. <br />1.1. <br />Containment Sump Installation Instructions (8 pages) <br />12. <br />/Approved double wall penetration fittings that are monitored with the interstitial space of the <br />sump must be used with this installation. <br />Upon review of the materials it ismy opinion and conclusion that sound engineering design and <br />engineering o:f this product provide an in-place system that will provide secondary containment and <br />allow continuous vacuum or hydrostatic monitoring orthe containment interstitial space including <br />the penetration fittings <br />prficas <br />ANAHEIM, CA James I -I. Ray <br />BELLEVUE, WA <br />Sr. Civil Engineer <br />CAMAS, WA <br />.MARTINEZ_. CA <br />PETAI.IJMA, [A tR eD I I�'� <br />SCOTTSDALL•, A7 OF <br />r.'at;1 V tL�3rd PA RTY'.nsM:� 1!g;n\T�hRSnttIp013105,QUC <br />www.rhid�qign.com <br />