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12,000 Gallon Tanks (8 Ft. Diameter) (Actual Capacity 11,627 gal) Fiberglas Tanks Dipstick Gallons Dipstick Gallons Dipstick Gallons Dipstick Gallons Dipstick Gallons for Fuel Storage /a ' " 1 S1/ 473 161/8" 1302 241/8" 2347 . 321/8" 3538 /a" 3 81/4" 484 161/4" 1317 24I/a" 2364 321/4" 3558 3/a" 5 83/8" 495 163/8" 1332 243/8 2382 323/8" 3577 Calibration Chart* '/2" 7 81/2" 506 161/2" 1347 24�/z" 2400 321/2" 3597 5/s" 10 85/e" 517 165/e" 1362 245/8" 2417 325/8" 3617 How to properly gauge your tank:... 3/a" 14 83/4 528 163/4" 1377 243/4" 2435 323/4" 3636 Underground storage tanks require /e" 17 B-7/81 539 16/8" 1392 247/8" 2453 327/8" 3656 periodic measurement to determine cur- _" 21 9" 550 17" 1407 25" 2471 33" 3676 rent inventory level.Using the proper methods w ihen gauging your tank's con- Ye" 25 91/8" 561 171/8" 1423 251/8" 2489 331/e1 3695 tents will insure the most accurate reading 1/4" 29 9+/4" 573 171/a" 1438 25�/a" 2506 331/4" 3715 and insure that you do not damage your 13/8" 34 93/811 584 173/8" 1453 253/8" 2524 333/8" 3735 tank.The following procedure should be 1 1/z" 38 91/2" 596 17V2" 1469 25Vz" 2542 33/z 3754 followed whenever you use a gauge stick ' to determine the amount of product that is 15/a" 43 95/a" 608 175/8" 1484 255/8" 2560 335/x" 3774 in yourtank: 13/4" 48 93/4" 619 173/4" 1500 253/4" 2578 333/4" 3794 1.Use a wood dipstick with a rubber or 1/e" 53 97/8" 631 17�/e" 1515 25/8" 2596 33/8" 3814 nylon tip.Metallic dipsticks are not 2" 59 10" 643 18" 1531 26" 2615 34" 3834 recommended.This will insure that fre- 21/e" 64 101/,1 655 181/8" 1546 261/4" 2633 341/8" 3854 quenttankftheg u or an accidental 21/4" 70 101/a" 667 18�/a" 1562 261/4" 2651 341/4" 3873 tank dropping illnot damagestick thetankbottom. 23/ 81 76 103/8" 679 183/8" 1578 263/e" 2669 343/;" 3893 2.Always gauge your tank at the fill 21/2" 82 101/2" 691 181/2" 1594 261/2" 2687 341h" 3913 port.A tank bottom protector plate has 25/a" 88 105/e" 703 185/8" 1609 265/8" 2706 345/8" 3933 been installed under this port to help 23/41 94 103/4" 715 183/a" 1625 263/4 2724 343/4" 3953 Protect the tank. 2�/a" 101107/8" 727 18/8 1641 26/8" 2742 34/8" 3973 3.Slowly lower your gauge stick into the fill port until it touches the tank bottom. 3" 108 11" 740 19" 1657 27" 2761 35" 3993 Never free drop the gauge stick.This 31/8" 114 113/8" 752 191/8" 1673 271/8" 2779 351/8" 4013 can result in inaccurate measurements 31/4 121 111/4 765 191/4" 1689 271/4" 2797 35�/a" 4033 due toproduct splashing.Free drop- 33/a" 128 113/e" 777 193/8" 1705 273/8" 2816 353/8" 4053 ping can also result in gauge stick 31/2" 135 111/2 790 191/2" 1721 271/212834 351/2" 4073 damage and tank damage. 35/8" 143 115/x" 803 195/8" 1738 275/8" 2853 355 " 4094 4.Remove your dipstick slowly and 33/4" 150 113/4" 815 193/4" 1754 273/4" 2871 353/4" 4114 gaugread e stick.product level directly from the 37/,11157 11/e" 828 197/a" 1770 277/8" 2890 357/8" 4134 4" 165 12" 841 20" 1786 28" 2909 36" 4154 To Water Paste Detection 41/8" 173 121/8" 854 201/8" 1803 281/8" 2927 361/8" 4174 detection paste is available frowater in the tank t�m,water 41/4" 181 121/4" 867 201/4 1819 281/1" 2946 361/4" 4194 petroleum equipment distributors. 43/81 189 123/8" 880 203/8" 1835 283/8" 2965 363/8" 4215 However,some water detection paste cannot detect antifreeze mixtures.If 41/2" 197 a13 201/2" 1852 281/2" 2983 361/2" 4235 antifreeze mixtures are used for the cavity 45/e" 205 205/8" 1868 285/8" 3002 365/8" 4255 monitoring fluid,the following product is 43/411 213 203/4" 1885 283/4" 3021 363/4 4275 capable of detecting water or antifreeze 4�/e" 222 20/8" 1902 28� " 3040 36/8" 4296 brine or up to 50 percent glycol)solution /a in the tank water bottoms: 5" 230 21" 1918 29" 3059 37" 4316 5Ya" 239 131/8" 959 211/.11 1935 291/8" 3077 371/4" 4336 #7686--11870DER 511a"-Y4_7 131/x" 973 211/4" 1952 291/4" 3096 371/4" 4357 DAYCO/NATIONAL 53/8" 256 133/8" 986 213/8" 1968 293/8" 3115 373/8" 4377 Dayton, - 51/2" 265 131/2" 1000 211/2" 1985 291/2" 3134 371/2" 4397 (513)22655 879 55/a" 274135/8" 1014 215/8" 2002 295/8" 3153 375/8" 4418 Caution 53/4" 283 133/4" 1028 213/4" 2019 293/4" 37 3172 3/4" 4438 Pressurized deliveries are not recom- 5' 292 13/8" 1042 21/8" 2036 29/8" 3191 37/8" 4459 mended.If the delivery vehicle uses /s" pumps to fill the tank,install overfill shut- 6" 302 14" 1056 22" 2053 30" 3210 38" 4479 off equipment in the tank and truck to pre- 61/s" 311 141/8" 1070 221/8" 2070 301/8" 3229 381/8" 4500 vent the tank from being overfilled.Over- -- '1 321141/4" 1084 221/x" 2087 301/4" 3249 381/4" 4520 filling the tank under pressure will 63/8" 330 143/8" 1098 223/8" 2104 30%11 3268 38 damage the tank even if the tank vent 3/a 3/e° 4541 is unrestricted. 61/211 340 141/2" 1112 221/2" 2121 301/2" 3287 381/2" 4561 65/8" 350 145/8" 1127 225/8" 2138 305/a" 3306 385/8" 4582 63/4" 359 143/4" 1141 223/4" 2155 303/4" 3325 383/4" 4602 6%7' 369 147/8" 1155 22/8" 2172 30/8" 3345 38/8" 4623 For Model DWT-2P double-wall 7" 379 15" 1170 23" 2190 3111 3364 39" 4643 tanks only,the annular space 71/8" 389 151/8" 1184 231/8" 1 2207 31/a" 3383 391/8" 4664 capacity for this tank is 630 gallons. 71/4" 400 151/4" 1199 231/4" 2224 311/4" 3402 391/4" 4684 73/8" 410 153/8" 1213 233/8" 1 2242 313/8" 3422 393/8" 4705 71/211 420 151/2" 1228 231/2" 2259 311/2" 3441 391/2" 4726 75/8" 430 155/8" 1243 235/8" 2276 315/8" 3461 395/8" 4746 73/4" 441 153/4" 1257 233/4" 2294 313/4" 3480 393/4" 4767 • 77/8" 452 157/8" 1272 237/8" 2311 1 317/," 3499 39�/a" 4788 8" 462 16" 1287 24" 2329 1 32" 1 4808 ®Registered T.M.—Owens-Corning Fiberglas Corp. - 'Calibration for level tanks only.