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07/25/2003 10: 21 916373 "'2 WALTON ENGINES- `JG PAGE 03 <br /> 16.2.2. if conditions may cause groundwater to rise above the <br /> ACR top, use an ACF -WT (watertight) riser top and cover. (See <br /> FIGURE 16-Z) <br /> V'Watertlght Attached Coliior Miser (ACR-WI) <br /> Locking RJng <br /> Acress Cover <br /> r�� <br /> .�; ACR waWrbght Top <br /> Riser <br /> W Attached Collar <br /> FIGURE 16-2 <br /> /16.2-3. The joint between the collar and the riser body (also the <br /> top joint when a watertight system is used) shelf be sealed by <br /> the contractor. Use ons+ that material supplied by Xerxes. <br /> 161.4. Do not attempt any repairs to damaged ACR compo- <br /> nents, If damage is detected, contact the UST coordinator at the <br /> Xerxes plant nearest yon. <br />