Air Quality Data Statement - January 5, 2023Hyperion's third-party contractor, Montrose, sent this statement on January 5, 2023 at 8:00AM to Hyperion Water Reclamation Plant for the H2S exceedance that triggered at H2S(PPB) (Hyperion Central Cabinet | T101 @ #3 Central Monitoring Site):Time of Alert: 1/5/2023 7:00 AM - the data is invalid. Montrose determined that the instrument had an issue with the sample flow and has invalidated the data. Montrose has determined that the instrument is now working properly and subsequent data is valid.Please visit lacitysan.org/hyperionair to view fence line monitoring data. 24-Hour Odor Hotline - November 7, 2022 Hyperion Water Reclamation Plant has established a 24-hour hotline for our neighbors to report odor concerns. The number is 310-318-8232. Hyperion Digester Gas Flare Test; August 27 - September 2, 2022 Hyperion Water Reclamation Plant plans to test-run Digester Gas Flares from August 27 to September 2, 2022 between the hours of 8:00 am and 4:00 pm. The test is required by the Air Quality Management District. During the period of one week, the flares will be tested one at a time combusting digester gas intermittently. Emergency Generator Test: Tuesday, July 19
Hyperion Water Reclamation Plant plans to test the emergency generator for the Intermediate Pump Station (IPS) on Tuesday, July 19, 2022, for one hour from 7:00am to 8:00am. During the test, a power outage will be simulated in order to check the functionality of auto start of the generator and other electrical equipment. During the test, the IPS biotrickling towers, odor control devices, will be shut down momentarily and will run on the generator power. The total downtime of the biotrickling towers is estimated to be about 15 minutes. Consequently, some odorous air can be released to the atmosphere. This is a planned event is essential in order to ensure resilient operation of the IPS in case there is a real power outage.
During the exercising of the gates, fully-treated effluent will be discharged into the 1-Mile Outfall and then pumped back into the plant before reaching the ocean. The 1-Mile Outfall is typically used only for excess stormwater, downstream maintenance and/or repairs, or emergency use.