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03/02/2006 11:59 6613257Pc3 DIMAG <br />• E NG I N E E R I N G <br />ARCH tTCCTURr <br />1137 Nnrrh McDcwcll Boulevard, per.aluma, CA 94954-1.11.0 <br />January 31, 2005 <br />DIMAGGIO M.A1N'TENANCE <br />P.O. Box 22407 <br />Bakersfield, CA 93390 <br />PAGE 03 <br />ENVI RON M ENTAL S E R V I C L• S <br />"Telephone: (107) 765-1.660 r'acRimilc, (707) 765-9908 <br />RE: STATE REGIS'7`ERD PROFESSIONAL ENG;INEFR APPROVAL <br />CCR Title 23 Division 3, Chapter 16, Section 263(1x) Secondary Containment <br />CCR Title 23 Division 3, Chapter 16, Section 2637 <br />DIMA,GGIO MAIROUND IN V_4RRIOUS SIZESENANCE FIBERGLASS WALL TANK SUMPMULTI. SIDED O•R <br />the following items on <br />1 have examined and reviewed tthe DIMAGC10 MAIi�i T ENANCI: 'Double <br />.. , <br />'POO.Wall Tank Sum <br />; . .. <br />!Q '` 1. Assembled Inner Wall, and Outer Wall tank collar with alternate top closing ring. (Some tank <br />k 11 othere Will allow this to be installed by DIMAGGIO. <br />manufacturers must install the tan co —1 <br />Drawings DM48CAI and DMA48CAO <br />Assembled multi -sided sump riser. Drawings D1\4450 and DM451. <br />Assernbled inner and outer multi -walled. top hot with cover seal and installation nng. Drawing <br />DM48THO- (DM•48THR required for round sump riser.) <br />Observed the placement of the top hat into the riser and the top hat cover ring on <br />the tip bat. <br />Dwg. DM480R inner round riser <br />Dwg. DM48RO outer round riser. <br />Dwg. Double wall sump installation - Detail of assembly connectiozl. <br />Dwg. Double wall sump & top hat testing installation instructions and detail. <br />M48R top hat adapter rings <br />Dwgs. DM33R and D <br />All fiberglass used must be U1, approved for petroleum products. <br />Containment Sump Installation Instructions (8 pages) <br />Approved double Wall penetration fittings that are monitored with the interstitial space of 'the <br />sump must be used with this installation., <br />(Jpon review of the materials itis m•y opinion and conclusion tYaat sound cngiaicering design and <br />engineering of this ary <br />product provide an in system that will <br />interstProvide itial pasconte 7n 1 dingainment d <br />allow continuous vacuum or hydrostatic monitoring of the con <br />the penetration fittings <br />997 V" <br />Tames H- Ray <br />My.' Sr. Civil Engineer <br />1 £ >_g&, <br />1?'E.CLLI'1> . <br />Ros!?vti i, CA <br />S,c,oststa,,- F.; A7 <br />/a <br />c .dc.' I V f.1,\3rdFAIKTY,DLm nggio\TankS a+fmo 13105.doc <br />3. <br />.f <br />4 <br />5. <br />6. <br />7. <br />9. <br />10. <br />12, <br />manufacturers must install the tan co —1 <br />Drawings DM48CAI and DMA48CAO <br />Assembled multi -sided sump riser. Drawings D1\4450 and DM451. <br />Assernbled inner and outer multi -walled. top hot with cover seal and installation nng. Drawing <br />DM48THO- (DM•48THR required for round sump riser.) <br />Observed the placement of the top hat into the riser and the top hat cover ring on <br />the tip bat. <br />Dwg. DM480R inner round riser <br />Dwg. DM48RO outer round riser. <br />Dwg. Double wall sump installation - Detail of assembly connectiozl. <br />Dwg. Double wall sump & top hat testing installation instructions and detail. <br />M48R top hat adapter rings <br />Dwgs. DM33R and D <br />All fiberglass used must be U1, approved for petroleum products. <br />Containment Sump Installation Instructions (8 pages) <br />Approved double Wall penetration fittings that are monitored with the interstitial space of 'the <br />sump must be used with this installation., <br />(Jpon review of the materials itis m•y opinion and conclusion tYaat sound cngiaicering design and <br />engineering of this ary <br />product provide an in system that will <br />interstProvide itial pasconte 7n 1 dingainment d <br />allow continuous vacuum or hydrostatic monitoring of the con <br />the penetration fittings <br />997 V" <br />Tames H- Ray <br />My.' Sr. Civil Engineer <br />1 £ >_g&, <br />1?'E.CLLI'1> . <br />Ros!?vti i, CA <br />S,c,oststa,,- F.; A7 <br />/a <br />c .dc.' I V f.1,\3rdFAIKTY,DLm nggio\TankS a+fmo 13105.doc <br />