The URL can be used to link to this page

Home My WebLink AboutCOM 0137.001 2020-2022County of Hawai `i Council District 9 - North and South Kohala Chair: Committee on Regenerative Agriculture, Water, Energy, & Environmental Management Phone: (808) 961-8564 (808) 887-2069 Email: tim.richards(a�hawaiicounty. HERBERT M. "TIM" RICHARDS, III HAWAII COUNTY COUNCIL District g `u'�C? 25 Aupuni Street, Ste. 1402, Hilo, Hawai `i 96720 r DATE: March 15, 2021 TO: Maile David, Council Chair and Members of the Hawaii County Council FROM: Herbert M. "Tim" Richards, III, Council Member Council District 9 - North and South Kohala SUBJECT: Presentation from Department of Environmental Management Please accept the presentation material (in the form of a jump drive), received today from the Department of Environmental Management entitled "Wastewater in Hawaii County". This is for their March 16, 2021 presentation before the Council Committee on Regenerative Agriculture, Water, Energy, and Environmental Management at 3:30 p.m. We apologize for the delay in submission and appreciate the efforts by staff to accommodate: Should you have any questions regarding this request, please do not hesitate to contact me. Thank you. Comm. N. 1 9j-7 , I Ref. To: �--emL Ref. Dote MAR 1 C 2021 Hawai'i County is an Equal Opportunity Provider and Employer Wastewater in Hawaii County Difference between wastewater and sewage Wastewater • A general term for water that, after being used for different purposes such as residential, commercial, or industrial, receives impurities. Wastewater is used water with physical, chemical and biological impurities. Sewage • Wastewater coming from water closets that contains human excreta. Where does it all flow? • Centralized facility • Public wastewater treatment plants — Metropolitan and suburban areas • Hilo, Honoka'a, Kaloko, Kapehu, Kealakehe, Kula'imano, Papa'ikou • Ocean outfall, subsurface, or sump disposal • Private wastewater treatments — Resort areas in Kona and Kohala • Recycled into irrigation for landscaping and golf courses — subsurface disposal • Individual Wastewater Systems • Septic systems • Into the ground, after preliminary treatment • 49,000 cesspools on Hawai'i Island, releasing 23 million gallons per day effluent (HDOH, 2018) • Into the ground, without treatment Let's dive Im right in ... Laterals connect homes to public sewer systems Prhooey ern icr.e 1 UPOW LOWW t at4w jW ' L &W O 1 1 Wastewater Division's mission • To protect the health and safety of the public and our environment • To provide a cost effective municipal sewer treatment and disposal service to the public • To ensure full compliance with local, state, and federal rules and regulations • To operate continuously, and respond to emergencies 24/7 for every day of the year Wastewater Division • Responsible for the engineering, regulatory compliance, operation, maintenance, and wastewater discharge of the County's wastewater collection, treatment and discharge facilities. • Engineering:, Design and construction • Regulatory Compliance. • Regulated by the U.S. Environmental Protection Agency and the Hawaii Department of Health, and subject to Chapter 21 of the Hawaii County Code. • Operations.: • A total of seven wastewater treatment facilities, 104 miles of gravity sewers, 16 pump stations, 11.2 miles of force mains. Wastewater Division • Operations: The largest two wastewater treatment plants are: • East Hawaii -Hilo Wastewater Treatment Plant • West Hawai'i — Kealakehe Wastewater Treatment Plant Maintenance: • Asset Management System controls preventative maintenance program • No funding for major items • No comprehensive O&M • Wastewater discharge: • Ocean • Injection wells • Leach field • Percolation Hawaii Island WWTPs of Hawaii Dept. of Environmental Managemen! Wastewater Division March 2021 Hawai'i County Sewer Network North Kohalaj may. t Honoka'a WWTP Kapehu WVj7P w South Kohala 0 5 t0 110 30 Miles Hamakua Ktilalmano 1'VINTP s'� tt' .•'"<,t • aw PApa'ikou 14V.?P r .. North Kona "• Kaloko WWTP South Hilo t r�,�K.,r.. • Hilo W1VTP Kealakehe VJWTP North Hdn / M.Yw3rr uow' Waatea, � forest Rexrve .r Puna . _N"una ... �.,. South Kona � � y Kau 0 5 t0 110 30 Miles Cesspools Influent (waste) cover (sometimes at ground from building(s) r- 1, surface or buried) Excavabon Fluid Level Brick, stone, concrete Block, .,. Ring, or Precast Chamber, or • other sidewall material, with ,, Open Joints CD � ..- •. w Backfill Material Sludge Accumulation water table • Cesspools are substandard systems. They don't treat wastewater, they merely dispose of it. Cesspools concentrate the wastewater in one location, often deep within the ground and in direct contact with groundwater, causing groundwater contamination. This groundwater flows into drinking water wells, streams and the ocean, harming public health and the environment, including beaches and coral reefs. — Hawai`i Department of Health Wastewater D wsFon March 2021 Hawaii County Cesspools North Kohala .A n-dft ♦South Kohala J. 1 Ham, `, North Kona Kau j Legend • Cesspools District Name Hamakua Kau North Hilo North Kohala North Kona Puna South Hilo N South Kohala w e South Kona s Fir NASA NGA JSGS fin HFslt. rafmn SAW. 0 IAO A1"'0' 1A%A VSGS FP: 0 S 10 20 30 MNes Septic systems Cal F�Ww ' MEMEMb., Manhole• Cotf��.d l = t Sewage W erwater goes to enters from house irai ' Sludge A septic tank is a wastewater storage unit that allows for both settling and skimming. Grit and other solids settle to the bottom of the tank and create a layer of sludge. Oil, grease, fat and other floatables rise to the top, creating a layer of scum. Accumulated sludge and scum must be removed on a regular basis. - HDOH The County maintains seven wastewater treatment plants islandwide • Wastewater Division: • Dora Beck P.E., Division Chief • Eric Takamura Ph.D., Deputy Honoka'a (Council District 1) Honoka'a Sewer Network Jest. M Erwiro inion al Manager - t w lasteater Division �6 -- 0 025 05 Mues larch 2021 3.1 miles of gravity sewers Honokaa WWTP (1982) 100,000 gallons/day Serves 204 units (101 residential/103 commercial) Aerated lagoons Subsurface discharge — UIC wells A Honoka'a WWTP video clip Kapehu (District 1) Kapehu Sewer Network eat. ag of Enwonmertal Manement 0 25 50 astevrater Drvis!on 100 f50 FWiiiia F MMI 0.5 miles of gravity sewers 300 feet of outfall. Kapehu WWTP (1985) 13,000 gallons per day Serves 29 residential customers Aerated septic treatment Subsurface discharge — leach field Pepe'ekeo (District 1) Kula'imano Sewer Network %".""•""' Kawainui FW (ommunMty Maps COM<+-tws (sri, N(RE Gar. n SateGraph. M(IUNASA USGS. (K IrSCerssis Pineau USE)A Sr 111 (,-I A+bus LA ;i9. S NGF NASA CCAAR N Robinson: NC(AS. NLS. OS. NMA,C*0dt,,r,4.mR,*,-mtmjmGaMard ftMA tn*n•m•p end the GAS user commu'In1 ounty of Hawaii rpt. of Envronme,tal Management lastewater Division 0 0.25 05 Mlles larch 2021 6.4 miles of gravity sewers, 0.91 miles of outfall Kula'imano WWTP (1982) 100,000 gallons/day Serves 638 units (634 residential, 4 commercial) Extended aeration/activated sludge; secondary clarifiers; aerobic digestion Ocean outfall discharge m_l�i::iT Kula'imano WWTP video cli Pauka'a&Pa-paikou District 1 Pauka'a-Papa'ikou Sewer Network 7.4 miles of gravity sewers Legend Treatment Plants and Pump Stations 1.6 miles of force mains oun Cty P'rro st t- SewetUmes .ra,� e t �.-tsewer —200 feet of outfall I — C—r' Hain &&^ - N.{a� Keir i One pump station --- County bra FWn [Pauli SCS t f of nI )W lept of Envirovvonn,ental Manage'nen[ Vastewater Division larch 2021 Y > / Mie F.,rl rmrmrrtraty Mnfn Cwrfrilr.�Wn.fwi HERf.�N�TMn 4> scr7i Mf IfMASq,;IG'.t.fM llS gfsy>&:.r IfSnq!.ivrn, r•. f+.r l 61r DS. 046s. WA NAVA C(r1AH. NinMrwwr NCEAti N14 fn. NMA C wl..ra.t>,.Iwr d'¢cw.nrr.I..A1,i�„C,I(rl..r.E ti MA. hsv.m;,—I rfr hlti rrw rnmm.rr.ly W� J. 0 0.25 05 Man Papa'ikou WWTP (1975) 100,000 gallons per day Serves 458 units (444 residential, 14 commercial) Extended aeration/activated sludge; secondary clarifiers; aerobic digestion Ocean outfall discharge f Papa`ikou WWTP video clip _egend 'reatment Plants and Pump Stadol C—tv A„r, st*- Coor tv TFaat—t aa�t ;ewer Lines —Col.'r, G�INMIW — Nm<o rN Cs tv Mir - Carty F— •%M - No Kp -v Fon w �. Frcws N Wdrnaku Hilo (Districts 2 & 3) Hilo Sewer Network tow Tunry or Fsawd i 'pt. of Environmental Manaaement astetvater Division arch 2021 k... NASA NCk USGS, E- IlrsE Germ n. S.W t h Mf TIINASA USGS. tAk US Censers Surety USDA 0 025 05 t 15 ZZZZOMMEMEMIRMd" 49 miles of gravity sewers 5.2 miles of force mains 3.75 miles of outfall Seven pump stations Hilo WWTP (1990) 2,300,000 gallons per day Serves 6,409 units (5,454 residential, 955 commercial) Trickling filter & solids contact; primary and secondary clarifiers; anaerobic digestion; centrifuge dewatering. Ocean outfall discharge Y "4whL .,T� 1 r-. mwmIIIIIIIImw Jim" ad it a whom— r lu�- _l R ,. •,,� �r r��ssr �► � l� }t 'i . t 111111 .; Hilo WWTP video clip ow-14` -V , oalaro Junction Kailua-Kona (Districts 7 & 8) Kailua-Kona Sewer Network e �J� Ilib Rr na , HaleHalawai SPS Va aha SPS Keo u Emma' SPS Keala S La(Wiau (Kinq Kam SPS i / ' Protect 19 SPS Kona Bay Estates SPS Kealakohe WWTP 38 miles of gravity sewers Aerated lagoons Subsurface discharge R!l'ln/�•ni N Holualoa SPS pahoehoe SPS ounty of Hay.ari ept. of Environmental Management 'astevtiater Division � `L r.tnss arch 2021 Legend 4.4 miles o f force mains Treatment Plants and Pump Stations Ca ry staeor w.ro =Nor{,Trry ,tet Eight pump stations —County T'eetrnv't Vle^ Sewer lines — CouMy creme roan "r'"''ra — N--C—rry a eNry K+ �`r-rv�'" - - Nor{prnry Rorty Mein Kealakehe WWTP (1993) vends 1,900,000 gallons per day ♦y Serves 6,702 units (6,441 residential, 261 commercial) Aerated lagoons Subsurface discharge R!l'ln/�•ni N Holualoa SPS pahoehoe SPS ounty of Hay.ari ept. of Environmental Management 'astevtiater Division � `L r.tnss arch 2021 Woko WWTP �dMtty of H�waf i dept. of & wwnw"al Manawn,-nt ARtstewat" D&"aon 4WO 2021 (C Kaloko (District 8) Kaloko Sewer Network ® 0 0.25 0.6 AAINr: Kaloko WWTP (2010) Average 30,000 gallons per day Serves Ulu Wini residents Aerated lagoons Subsurface discharge Rwr Li Kaloko WWTP video clip Puna and Ka'u- (Districts 3, 4, 5, and 6) Pa-hala Large Capacity Cesspool Pahala Sewer Network rpt. of Envnonmental Managemert aste.-Vate, Division � 250 500 FOM iII.LT��I 99 gang cesspool customers -egend S Na'alehu Large Capacity NSaIehu Sewer Network Naalehu Cesspool ., commu,ury 125 250 500 7% 147 gang cesspool customers Private WWTPs in Council Districts 7, 8, and 9 Hawaii County Sewer Network Legend Opwo" A,*a O -W wow ri►ri •JewrWr wpr CO « t"0" W M••vv Ca/ caw" co rtwit nw tom►. Ca ••t. ++•sb� A060- Ow" Mew e 4 ww. • Y+•D♦ ■ON Mi►r L.w Cit ' f 1 A" Ian UWW Ca. � �rnlMy Colley i 'r t"'� • war.•. .+ �wwlw Ca�raM � "•~ - M � r _ .. ....sw,,... v► �.. .w •s�iirw �rw •.w .ti M41M�M.r OMMb' •� WWMe :0:1 Current major wastewater treatment concerns • Kealakehe WWTP, R-2 users — identify operational modifications • Hilo WWTP upgrades — Invest in major repairs in excess of $50,000,000 or a total replacement in the near future • Puna WWTP - Funding available for feasibility study now, pending approval and RFP process. • Puako WWTP — Facilities plan is awaiting release of State CIP funding. Consultant selected. Awaiting contract execution. • Na`alehu and Pahala LCC Administrative Order on Consent • (Anticipated) Pretreatment Administrative Orders on Consent Current major wastewater collection system concerns • Pua Force Main Replacement and Rehabilitation — Design notice to proceed: 3/11/21; construction $27,000,000 • Pua Pump Station Renovation — Construction $25,000,000; preliminary engineering report needs to be completed for state revolving fund eligibility. • Wailoa Pump Station Renovation — construction $10,000,000 • North Kona Pump Station — design/construction $18,000,000 • Other pump stations that require renovation (including force main, KebpO, Hale Ha-15wai, Project 19,, Kolea, Onekahakaha, Wailuku Recommendations: • Develop acounty-wide integrated wastewater management plan • Establish an enterprise funding system or other financially sustainable structure to be able to perform capital improvement and major maintenance projects. • Secure the right staffing level and area of expertise • Establish a training and certification program • Proactive compliance with state and federal rules and regulations • Beef up funding for preventative maintenance program Recommendations: • Build up training for all staff members and rely on experienced in- house staff to save costs and find solutions. • Continue dialogue with EPA and HDOH and negotiate awin-win on AC)Cs • Continue to seek outside funding from federal and state partners. • Setup pilot programs for alternative effluent treatment/cesspools. • Public -Private Partnerships • Allows sharing of certified personnel between public and non-public entities • Allows increase of tie-ins to sewer lines, resulting in cleaner environment * Imp ' I 1 Aim ..f •� • � � -- ` `: .,� ' -*ice .w_� - I � a ; 4wVigo% ues ion ..