b'LT ENGINEERINGCATALOGMAINTENANCEThe Neutralization Tank should be inspected periodically. Upon inspection, foreign debris should be removed and Chemical Rock added if needed. To summarize, the main steps to follow at maintenance time are cited below.For more detailed information refer to the Operationsand Maintenance Manual. Verify pH in the effluent, if below standards, labrox needs to be replaced as first mitigation measure. Stop flow passing through the unit. Remove all debris and trash present inside. Remove old/inert labrox from inside the tank. Apply new rock media into the tank. Open the flow for operation. Verify pH at the effluent again, waiting 30 minutesbefore taking the first measure to allow for systemWastewater Systemschemical equilibrium.The Sampling Tank should be inspected on an annual basis. Upon inspection, foreign debris should be removed and the pH probe should be cleaned and inspected(refer to O&M manual). The Secondary Vault should be inspected on an annual basis. The sump may contain water (due to condensation or ground water). If the water level reaches a certaindepth, the sump pump pumps the water into the sewer.The sump pump shall be inspected annually forproper operation.The Control Panel should be inspected on a monthly basis. Upon inspection, verify the proper operation of the pH analyzer and the chart recorder. The chart recorder contains a memory card, which digitally records at one minute intervals. This card can be removed for downloading data to a personal computer. The memory card should be replaced at one-year intervals. Identify and store the removed card in a safe location for future reference.INFO@PARKUSA.COM|888-611-7275|WWW.PARKUSA.COM 379'