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Well No. 29 with PFOS and PFOA Treatment Systems <br />Orange, CA <br />�r <br />Tetra Tech provided engineering design services for the well drilling <br />and well equipping of a potable water well in the City of Orange. The <br />City's Water Division operates a water distribution system including <br />water mains, wells, pump stations, and reservoirs. The City pumps <br />water from the groundwater basin through an existing well network that <br />includes 12 active wells and imports water from the Colorado River and <br />Northern California as a secondary source. Well No. 29 is proposed to <br />enhance the reliability, efficiency, and redundancy of the City's water <br />system. <br />Project Value: <br />Drilling: $3.1 M <br />Equipping: $8M (Est.) <br />Schedule: <br />December 2022 <br />Key Staff: <br />Tom Epperson, PE, <br />Project Director <br />Lawrence Esguerra, PE <br />Project Manager <br />Mike Tsoi, PE <br />Team Leader <br />Erin Cabanero, PE <br />Project Engineer <br />Amanda Taylor, PE <br />Process Engineer <br />Matt Vera, PE <br />Project Engineer <br />Mazen Kassar, PE <br />Electrical Engineer <br />Eric Yuen, PE, SE <br />Structural Engineer <br />Reference: <br />City of Orange <br />Orange, CA <br />Sonny Tran, PE <br />714/288-2475 <br />stran@cityoforange.org <br />Currently, Well No. 8 and its supporting facilities were located within the existing site. The property was <br />mostly unpaved and small areas of asphalt around the well facilities. The Well No. 8 is to be destroyed <br />and the new Well No. 29 and PFOS/PFOA treatment system constructed. <br />Well No. 29 will pump water to the 370 Zone and is expected to produce approximately 3,000 GPM. <br />The PFOS/PFOA treatment system shall be designed to treat approximately 3,500 to 4,500 GPM, <br />which includes the total production of proposed Well No. 29 and existing Well No. 9, located 300 feet to <br />the north. The well facilities include a wellhead enclosure, chlorination, and electrical building, with an <br />external roll -up generator connection for backup power. The on -site piping includes piping from <br />Well Nos. 9 and 29 to the treatment system and post treatment piping to the distribution system. The <br />Water Division is to bid the well drilling phase and well equipping phase separately. The site includes <br />building and landscaping design, paving and fencing. Well drilling construction began in February 2021 <br />and well equipping began after drilling was complete. <br />TETRA TECH <br />