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HomeMy WebLinkAboutItem 10 PPP 07-01-2020 Ops Comm_P1-105 Grit Washing Sole Source Sole Source for Grit Washing & Dewatering System Headworks Rehabilitation Project- P1 -105 AM Kathy Millea, Director of Engineering MM MEN Operations Committee July 1 , 2020 o�N�y S A N I rq T�O� .� / iUCTIUYN SAYlR Q /' CN c T . -O h ACK � �^ O\ MAcN , Headworks Rehabilitation isZA M.-Plant No . 1 -.1 VA MIL Steve Anderson Construction Cost: $293 million Lift Station Wastehau 3 Sunflower r�o� 3 C Nu1 W Oy 0 ¢\b DJa x H eadworks Advertise for Bids: Sept 2020 T^ A� NC CP0 Roomical G G Construction Duration: 6.5 years AQa m S �R oo ia\� \Ne rl GF¢G Yle a�' a0 0 \ Tunnel Fa 1 Power Building 3A Power a Building 3 o r¢ta � 3 C � N Dj v New Headworks Rehab of Standby Power Building Existing Headworks Rehabilitation isZA M.-Plant No . 1 -.1 VA OIL Steve Anderson Construction Cost: $293 million Lift Station Grit Wastehau Sunflower r�o� 3 Pump <� po Station Handling o \b ��a x Building ����¢ Advertise for Bids: Sept 2020 �^ Headworks A e�s�Po Roomical J\0��9 Construction Duration: 6.5 years ac � ootiv,G^r 4� 5G0i\gR\ao ° FGr¢o ci°ll"¢, ir o°a�ot F ao o \ Tunnel Fa 1 Power Building 3A Power a Building 3 o r¢ta � 3 C � N Dj v New Headworks Rehab of Standby Power Building Existing Zs Grit Removal Facilities Influent Wastewater Aerated Grit Chambers Containing Grit Grit Classifying 5-s $ El t t. S Grit Bin 4 Existing Grit Handling acilities in Poor ConditionA" 1 • Obsolete mechanical equipment • Grit has high organic and water content • Poor grit capture ` l _ 1 X Grit Washing Evaluation -_ 4 Extensive studies performed : • Existing grit system performance • Grit characterization • Grit washing technologies J • Odor control requirements • Life cycle cost analysis Recommendation : • Sole Source Huber COAN DA grit classifier ..... ole Source Justification ' ' ►�` ' • Cleaner grit = lower foul air flow T - ' , • Cleaner grit = lower disposal costs • Cleaner grit = more reusable solids capture • $3 million lower life cycle cost than J conventional grit classifier facility • No other high-performance grit handling system found � r Y rr i • $2.3 million pricing commitment from supplier. Verified as reasonable for similar installations d Pro osed Grit Handlin Buildin �.y �� p J g Built Around S ecific E ui ment �.� p q p DRAIN PIPE(TYPI Building - and mezzanine Ground floor GRIT WA HER(TYP) i Building ventilated to Associated grit odor c• • Recommended ActionWit Adopt Resolution No. OCSD 20-XX entitled , "A Resolution of the Board of Directors of the Orange County Sanitation District, making findings pursuant to Public Contracts Code Section 3400 in support of the sole source specification of Huber Technology for grit washing and dewatering systems for Headworks Rehabilitation at Plant No. 1 , Project No. P1 -105". 4JN1 v S A N I rq Troy ` 9 Q t c o -a 90 2 fcl/N THE