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WA9601-LR000515HENLEY JOHNSTON & ASSOCIATES, INC. engineering geoscfence consultants Transmittal Date: 15 May 2000 To: S~~~;~k, Jacobs & Fir~clea Attn: [ it, Cery C. Hendri cks, PE Proj act: Coppall 1.5 M. G- ~ 1 evat~l Tank Gentlemen: Henley-Johnston & Assoc., Inc. transmits herewith the following: pRinfing Tn.qpPcfion, Report NoS: 17344-0(4/3/00), 17350-0(4/5/00), 17351-0 (4/6/00), 17386-0 (4/12/00), ] 7403-0 (4/17/00), 17412-0 (4/19/00-4/20/00) and ] 74] 3-0 (4/27/00) Comments: cc; Larry Davis, City o:~= Co':ppell Sincerely yours, telephone (214) 94 Z .3808 fax (214) 943-7645 Henley-Johnston & Assoc., Inc. Project No. 71 5] 235 Morgan Ave.. Dallas. Tcxas 75203 4305 Glenwood Ct. Granbury, TX 76049 Client Henley, Johnston & Associates Attn: Herb Crowder Contractor Advantage Coating ABRASIVE MATERIAL Abrasive Type: Bulk blasting sand Recycled: No Air Quality Good Equipment Three (3) blast nozzles Dehumidi~er operation onsite ENVIRONMENTAL CONDITIONS Date 4/3/00 Time 1:15 p.m. Dry Bulb 63 Wet Bulb 47% Humidity 25% Dew Point 27 Surface Temp 58 Wind Interior Area Project Inspector COATING ~_.~SPECTION REPORT Date 04-3-00 Report 17344-0 Page' 1 of 1 Coppell 1.5 MG Hydropillar Storage Tank Coppell, Texas Cindy Holmes, Certified Coating Inspector SURFACE PREPARATION Standard Specified SSPC-SPlo Standard Achieved SSPC-SP 10 Profile Reading 4.2 mils, 4.3 mils COATING MATERIAL Material used Carboline Carboguard 561 Batch No. Part A 9L1370M Part B 9H0656M Part C N/A Thinner #10 0At 1455 Application method Airless spray Color- 1898 DRY FILM THICKNESS Number of ~ Low Readings High Mean Comments DFT gage used Additional Information: The abrasive blast to the walls was completed today. Wall area includes 4 feet up onto roof, all of vertical walls and cone walls down to the stiffener beam. The cone wall vertical and horizontal welds still have weld splatter around them and some spots have been corroded away on these welds. Also the butt welds on the stiffeners at vertical wall/sloped wall intersection were only welded on one side and underside is very rough. The welds on the stiffener beam also have pits corroded in them. The wall sheets themselves have very little pitting with most areas having general corrosion and no pitting. Contractor will try to remove all the spent abrasive and dust from the walls today and paint tomorrow. The dehumidi~er unit is on and working properly so blasted surfaces are not rusting. This report is for the cxclusivc use of our client and shall not be modified or reproduced without written approval of said client 4305 Glenwood Ct. Granbury, TX 76049 Client Henley, Johnston & Associates Attn: Herb Crowder Contractor Advantage Coating ABRASIVE MATERIAL Abrasive Type: Recycled: Air Quality Equipment Project Inspector COATING~SPECTION REPORT Date 04-05-00 Report 17350-0 Page 1 of 2 Coppell 1.5 MG Elevated Tank Coppell, Texas Cindy Holmes, Certified Coating Inspector SUREACE PREPARATION Standard Specified SSPC-SP10 Standard Achieved SSPC-SP10 Profile Reading N/A ENVIRONMENTAL CONDITIONS Date 4/5/00 Time 8:30 a.m. Dry Bulb 53 Wet Bulb 40% Humidity 23% Dew Point 17 Surface Temp 50 Wind Interior Area Primer areas on riser pipe and overflow pipe COATING MATERIAL Material used Batch No. Part A Part B Part C Thinner Application method Carboline Carboguard 561 9L 1370M/9H0716M 9H0656M/9K1266M N/A #10 0A11515 Airless spray Color- 1898 DRY FILM THICKNESS Number of Low High Mean Readings 10 4.8 10.4 6.43 Comments DFT gage used Positector 6000 Additional Information: Contractor spent all day 4-4-00 blowing down walls and upper cone to remove blasting abrasive and dust. The dehumidifier has been on all along and wall surfaces are still acceptable for coating. The engineer will be on site tomorrow moming to look at the pits in the welds seams of the stiffeners ring and other areas. The airless spray application &primer started at 9:15 a.m. with two (2) men spraying coating and two (2) men stripe coating weld seams. This report is for the exclusive use of our client and shall not be modified or reproduced without written approval of said client ,-R,r~oa,r fl= ~./'N P, eadings E;.gtches ~ ;:EAD I NG I 4.80 mil 2 5.70 mil 3 7.~ mil 4 5.40 mi! 5 lE~.4E~ rqil E. 5.CO rail 7 5 ;~; ~. 0 9 n'~ i 1 ~ 7.i0 ff, il '9 ~.~.9 rnil ~.~ g X 10. ~ 0 rq i 1 MI~4 4.~;9 rail MEAN (-.43 ~.TQ QEV !.74 '~=~il 4305 Glenwood Ct. Granbury, TX 76049 Client Henley, Johnston & Associates Attn: Herb Crowder Contractor Advantage Coating ABRASIVE MATERIAL Abrasive Type: Recycled: Air Quality Equipment Date Page ProjeCt Inspector COATING -NSPECTION REPORT 04-6-00 Report 17351-0 1 of 1 Coppell 1.5 M.G. Elevated Tank Coppell, Texas Cindy Holmes, Certified Coating Inspector SURFACE PREPARATION Standard Specified Standard Achieved Profile Reading ENVIRONMENTAL CONDITIONS Date 4/6/00 Time 10:30 a,m. Dry Bulb 68 Wet Bulb 48 Humidity 16% Dew Point 22 Surface Temp 63 Wind Interior Area COATING MATERIAL Material used Batch No. Part A Part B Part C Thinner Application method Carboguard 561 9H0716M 9K1266M N/A #10 OA11515 Airless spray Color - 1898 DRY FILM THICKNESS Number of Low Readings High Mean Comments DFT gage used Additional Information: An inspection walk through was performed by the project engineer, Gary Hendricks, City of Coppell representative, Glenn Holloway and myself of pitting corrosion areas in stiffeners ring welds and other weld seams. It was decided that the deeper pits would be weld repaired and areas of lack of fusion would be filled in. I will mark this areas needing repair today and contractor will repair those areas. Also the top section of the interior ladder needs to be replaced due to ladders rings corroding away (photos I, 2 and 3). Photos 5, 6, 7, 8 and 11, show areas that will be weld repaired. Contractor now has additional primer on site and will complete the prime coat application to wall today. Prior to the start of finish coat application to previously primed areas. This report is for the exclusive use of our client and shall not bc modified or reproduced without written approval of said client 4305 Glenwood Ct. Granbury, TX 76049 Client Henley, Johnston & Associates Attn: Herb Crowder Contractor Advantage Coating ABRASIVE MATERIAL Abrasive Type: Recycled: Air Quality Equipment Date Page Project Inspector COATING INSPECTION REPORT 04-12-00 Report 17386-0 · 1 of 2 Coppell 1.5 M. G. Elevated Storage Tank Coppell, Texas Cindy Holmes, Certified Coating Inspector SURFACE PREPARATION Standard Specified Standard Achieved Profile Reading ENVIRONMENTAL CONDITIONS Date 4/12/00 4/12/00 Time l:30p.m. 2:10p.m. Dry Bulb 71 60 Wet Bulb 53 57 Humidity 27% 83% Dew Point 35 55 Surface Temp 61 60 Wind Interior Light Mist Finish coat on walls AYea COATING MATERIAL Material used Batch No. Part A Part B Part C Thinner Application method DRY FILM THICKNESS Number of Low High Mean Readings 10 4.4 19.2 12.4 Comments DFT gage used Positector 6000 Additional Information: The welder is on site patching the pits in the weld seams. The new ladder section is on site and will be replaced tomorrow. The sand was removed from around the fill pipe to locate the area to be repaired. (See photo) The dry film thickness readings taken today were on the wall surfaces. The low dry film thickness readings were near the bottom and will be recoated when floor and lower wall are painted. The weld pit repair started today and should be completed by tomorrow. Areas already weld repaired are being power tool cleaned and then wiped off with thinner. Note: Dehumidi~er is still operation and keeping dew point and humidity down on the interior surfaces. This repo~ is for the exclusive use of our client and shall not be modified or reproduced without written approval of said client \% %/N t~5~2 ~ ~eadin~ s latcoe~ ~ Batch>~ I ) FE ~ ~> READING ~ i 4.40 mil z 7.~e mil ~ 1~.~o mil 4 1~.8o mil 8 lz.8o mil 7 12.50 mil 1~.~0 mil 1~.~0 mil 10 15.Z0 mil MAX 1.9.Z0 mil MIN 4.40 mil N MEAN 12.40 mil ~z.'FD DEV 4.81 mil ! i 4305 Glenwood Ct. Granbury, TX 76049 Client Henley, Johnston & Associates Attn: Herb Crowder Contractor Advantage Coatings ABRASIVE MATERIAL Abrasive Type: Recycled: Air Quality Equipment Date Page Project Inspector COATING t~SPECTION REPORT 04-17-00 Report 17403-0 · 1 of 2 Coppell 1.5 M.G. Elevated Tank Coppell, Texas Cindy Holmes, Certified Coating Inspector SURFACE PREPARATION Standard Specified Standard Achieved Profile Reading ENVIRONMENTAL CONDITIONS Date 4/17/00 Time 9:00 a.m. Dry Bulb 59 Wet Bulb 52 Humidity 62% Dew Point 46 Surface Temp 59 Wind Interior Area Interior ceiling and walls COATING MATERIAL Material used Batch No. Part A Part B Part C Thinner Application method Carboguard 561 9K1265M 9KI266M N/A None used Brush Color - 5800 White DRY FILM THICKNESS Number of Low Readings 7O 6.8 High Mean Comments 23.5 13.57 See page 2 of 2 DFT gage used Positector 6000 Additional Information: A dry film thickness and visual inspection was performed to ceiling and rafter areas. Some visual holidays were found around roof hatch and the weld at ceiling/riser pipe intersection. Areas below the water line were checked for proper millage (DFT's) and holidays by Positector 6000 gage and a Tinker Rasor wet sponge holiday detector. Kodak Photoflow was added to sponge water to aid in pinhole detection. Area checked was from stiffener ring on cone wall on up to the vertical walls. Most areas had no holidays but a few were found on the welds at cone wall/vertical wall stiffener and also a few on the top weld of the conb wall stiffener. All areas found were circled with chalk and will be touched up today. After touch up painting was complete contractor will start removing sand from the tank. Note: Dehumidi~er was turned off over the weekend but has been turned back on now. This report is for the exclusive use of our client and shall not be modified or reproduced Without written approval of said client 35 37 38 35 40 43 44 45 4~ 47 48 4~ 50 51 5Z 53 54 55 5~ 57 58 59 6g G3 64 13.50 .m~ 1 lg.4g "mil ~.g.4g!mil ~3.4g rail 15.Gg Ig.2g ~mil ' 12.6o ~mil ??5g ~il .. : 7g mii .~b. !~ ~mi 1 I7. ;sg ~mil 15.(g rail :". 23.3g ~mil lg.2g ~i'l; 12.30 il.3g ~5,58 14.70 19,~.8 ~il; '. ~3.48 ' '" G 80 . m'i.1 16 8, Ig m: '. 12.~g ~ '~ .% ~'1-~.' 15.$e . 17.70 13.70 12.3g rail 13.5g 13.gg l~.~g '~il. 4305 Glenwood Ct. Granbury, TX 76049 Client Henley, Johnston & Associates Attn: Herb Crowder Contractor Advantage Coatings ABRASIVE MATERIAL Abrasive Type: Bulk blasting sand Recycled: No Air Quality Good Equipment 185 compressor; one (1) blast nozzle ENVIRONMENTAL CONDITIONS Date 4/19/00 4/20/00 4/20/00 Time 1:00 p.m. 8:45 a.m. 9:30 a.m. Dry Bulb 82 64 63 Wet Bulb 69 47 51 Humidity 51% 22% 42 Dew Point 62 25 39 Surface Temp 77 55-56 60 Wind Interior Interior N 15-20 Area Date Page Project Inspector COATING iNSPECTION REPORT 04-19-00' Report 17412-0 ' 1 of 2 *04-20-00 Coppell 1.5 M.G. Elevated Tank Coppell, Texas Cindy Holmes, Certified Coating Inspector SURFACE PREPARATION Standard Specified SSPC-SPl0 Standard Achieved SSPC-SP 10 Profile Reading Range from 4.0 to 4.9 mils Average 4.38 mils COATING MATERIAL Material used Batch No. Part A Part B Part C Thinner Application method DRY FILM THICKNESS Number of Low Readings Carboguard 561 9H0716M/gL 1370M 9LI371M/gK1266M N/A #10 OAllSIS Airless spray Color - Tank White (1898) High Mean Comments DFT gage used Additional Information: 04-19-00 The bulk of the sand has been removed from the interior of the tank. Contractor now wants to know which areas have to have additional blast cleaning performed. These areas were pointed out to them and some of the areas were marked with chalk. The area by the interior ladder will be reblasted because rain fell in the tank. All blasting will be completed today. 4-20-00 Interior blasted surfaces are now cleaned to SSPC-SP i0 and are acceptable for coating. The bulk of the sand has been removed and now contractor is sweeping down the walls and floor and removing the dust. Airless spray application of prime coat will be started after all dust is removed. Weld seams will be stripe coated today and again during finish coat application. This report is for the exclusive use of our client and shall not be modified or reproduced without written approval of said client CONTRACT INSPECTION SERCVICE, INC. 4305 GLENWOOD CT. GRANBURY, TX 76049 (817) 246-8096 SURFACE PROFILES Project: ~np~'l l I. Report No: I '! t/l?_. 0 Date: 3-/S'o0 --~ q -Zo--, o Page Z- _ of Z- I~. ~ TESTEX '~'~- Reading .~'oC) ": ~NEWARK, DE1971S e~ ~. 2.0 o~ 50 microns i' X COARSE (1.5 t0.4.5 mils) o~ (40 to 115 microns) X COARS_E (1.5 to+44.5~mils) or (413 to. 1,15 micron. s.).. ,! i : 4305 Glenwood Ct. Granbury, TX 76049 Client Henley, Johnston & Associates Attn: Herb Crowder Contractor Advantage Coatings ABRASIVE MATERIAL Abrasive Type: Recycled: Air ity Equipment Date Page Project Inspector COATING INSPECTION REPORT 04-27-00 Report 17413 -0 1 of 2~ Coppell 1.5 M.G. Elevated Tank Coppell, Texas Cindy Holmes, Certified Coating Inspector SURFACE PREPARATION Standard Specified Standard Achieved Profile Reading ENVIRONMENTAL CONDITIONS Date 4/27/00 Time 11:30 a.m. Dry Bulb 65 Wet Bulb 60 Humidity 75% Dew Point 57 Surface Temp 64 Wind Interior Lower wall/floor Area COATING MATERIAL Material used Batch No. Part A Part B Part C Thinner Application method Carboguard 561 9K1265M 9K1266M N/A None used Brush Color - White S800 DRY FILM THICKNESS Number of Low High Mean Readings 39 9.3 21.3 13.31 Comments See page 2 of 2 DFT gage used Positector 6000 Additional Information: A dry film thickness, visual and holiday detector test was performed to wall surfaces from the stiffener ring down to the floor today. DFT readings are acceptable and are listed on page 2 of 2. The holiday detector test was performed with a Tinker-Rasor wet sponge holiday detector. Water wetter was added to the sponge water to aid in pinhole detection. The holidays found were all small and were either on a weld or on the interior ladder. Areas found with holiday detector were circled with chalk and then touched up with Carboguard 561 after inspection was over. The areas noted in previous report as needing touch up coating (17403-0) have been repaired. The only items remaining to be completed are: 1 .) Installing safety climb device on interior ladder. 2.) Replace screen wire in center vent (tom). 3 .) Mount roof hatch cover. 4.) Disinfect and seal tank. This report is for the exclusive use of our client and shall not be modified or reproduced without written approval of said client T 39 Readings 1 Batches Batch, ~ 1 FE = ~EAC. ING !2.20 5 15.3~ 1t.30 ~il ~G. le mil 13.G0 m~l 11 1~.50 m~l 9.7~ m~l ,S.4~ mil 1A.O0 ~i~ 17 - 18 15.70 mi 19 19.30 mi 12.90 mil 21 12.00 mil ~l.ge 10.80 17.GO mll 1~.10 mil 12.40 mil 10.8o mil ~l.$o mil ~O mil 3~ 17.70 35 15.oO mil 18.08 mil 37 !~.10 38 10.40 mil MAX Z~,30 .,30 mil M I N ..::q N MEAN 13,31 5TD DEV 3.0G mil