Laserfiche WebLink
PROPOSALPOR <br />On -Call Engineering Design Services <br />PFAS Treatment Systems <br />cost during construction, as full-size anchor layout templates must be created for each vessel, the templates <br />must be field located by surveyors and secured to the formwork to keep the anchors from shifting as the <br />concrete is placed. <br />The convenience of post -installed anchors can be reclaimed by the use of late pour pockets at each of the <br />tank legs. Please refer to the sketches below for a typical plan and section of the late pour pockets. A small <br />portion of the tank foundation will be blocked out with formwork so that the space within the block -out will not <br />be filled with concrete at the time the rest of the foundation concrete is placed. The reinforcing for the <br />foundation will run through the late pour block -out, and it will be located to miss the tank anchors. This will <br />create relatively clear areas at each tank base plate where the cast -in -place anchor bolts can be located with <br />some freedom for field adjustments. Additional reinforcing stirrups (if required) may be placed in the late pour <br />pocket for increased concrete strength. After the tanks are properly located and temporarily supported, the late <br />pour pockets will be filled with high strength cementitious grout. After the grout in the late pour pocket sets, <br />final adjustments to the tank height may be made, to plumb and level the tanks. These adjustments are made <br />using the leveling nuts under the base plates. <br />Ay<MLR AOGTS TJN/f bV[ym♦ <br />'— r. K 4w r FL M (ClLW6!) <br />Cafe 6l;W PacfrT F"d <br />IX Preliminary Treatment Sizing <br />I <br />/7JWf pW614FlTr <br />/.VCHq� �plC N/N <br />Nv/J <br />!lp�-JNa/NK-.� � <br />�LIr'ILING <br />ARpiT <br />Az�fe,,��NC.f M<r TeN/fST � IN LATG J�oNCf� <br />A M1eNOF prLT! �111N �rrNN A/GwJ <br />/N Lr'R /OUS f'Xfo-T <br />/A \ CAY�NWC %JOCffT S6LT/O.✓ <br />IX system sizing is based on the minimum Empty Bed Contact Time (EBCT) required to successfully adsorb a <br />particular pollutant and the allowable superficial velocity, or hydraulic loading rate of the vessel. IX treatment <br />for PFAS removal is configured in 2-vessel trains, with one train acting as the lead and the second train acting <br />as the lag (i.e. the vessels operate in series). <br />Santa Ana Well 26 was evaluated to consider what a WAS treatment system for this site could look like. <br />Santa Ana Well 26 supplies the East Reservoir and Pumping Station. The well production from 2010 to 2022 <br />varied from 1,565 gpm to 2,454 gpm. Design criteria of the existing well are summarized in Table 1. <br />TET 0unci1 19 — 38 4/4/2023Page 19 <br />