2020-09-23 EMC Meeting Agenda and Director's Informational Report

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◦ Final R-1 treatment construction documents were being prepared but have been placed “on-hold.” ◦ The constructed wetlands design was stopped at 90%. ◦ The SAT design was stopped at 50%. Consultant will need to perform a 6- month pilot-scale SAT for longer-term phosphorus removal performance once project is given the okay to proceed. • The long-range plans for R-1 quality effluent began in 2007 as a phased approach. Phase I work installed a reuse line along Queen Kaʻahumanu Highway between the Kohanaiki area and Kealakehe Parkway (completed in 2018). • DOH has earmarked SRF monies in the amount of $54 million to fund both design and construction of the R-1 upgrade at the Kealakehe WWTP. • Received SRF commitment letter for Outside Fence Line (OSFL) consultant contract (Brown and Caldwell). DOH is trying to fund projects on a fiscal year basis, and this has slowed down their execution of the SRF commitment letter. Design work has been suspended and all work to date has been frozen on the SAT and Subsurface Wetlands. Contract terminated as Phase 1 of the OSFL contract. • Design of the North and South R-1 distribution pipelines has been reinitiated under Phase 2 of the OSFL design work. Design contract awaiting execution. • Hina Lani DWS 1 MG Reservoir (tank) transfer to DEM is awaiting NTP on the R-1 OSFL consultant design contract. • Aliʻi Drive Salinity Study: Work on sampling salinity to identify if seawater intrusion is infiltrating faulty sewer pipelines along Aliʻi Drive has begun. Both the Keopu SPS and Lanihau SPS service areas show I/I occurring during high tides. Hale Halawai SPS shows little or no salinity resulting from sea water I/I. CCTV of the affected gravity sewers servicing the Lanihau SPS and Keopu SPS revealed that numerous joints have separated. Approximately $200,000 has been directed to purchase CIPP kits to seal the joints. Also, a new CCTV camera has been purchased to video the laterals in this section. Crews have started to install the CIPP kits from the week of 07/27/20. Approximately 700 LF of sewers were lined with the CIPP kits to date. On 08/17/20, work was suspended for the Lanihau Force Main replacement project. Line crew was moved to help assist contractor for wastewater diversion to Keopu SPS during this construction work. E. NORTH KONA SEWER PUMP STATION • This new sewer pump station will be located on the mauka side of Queen Kaʻahumanu Highway. It is to receive wastewater from a portion of the area below Ane Keohokalole Highway between Hina Lani Street and Kealakehe Parkway. The wastewater will be pumped to the Kealakehe WWTP via new force mains. The new sewer pump station is scheduled to be complete in July 2022. • The preliminary engineering report for the new pump station has been finalized. • The Environmental Assessment (EA) process has begun. Consultant was issued a NTP in late December 2019. Draft EA is expected to be complete by November 2020. 13