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ENVIRONMENTAL* <br /> Analytical Chemists <br /> GROUNDWATER SAMPLING & PURGE LOG <br /> Date:2023-04-04 LabID# STK2333929 Client:EKI - CLSP Area <br /> Tech. Name: Justin J. Addison Project Name/No: Quarterly <br /> Well No: CLSP-12 Well Completion Depth: 24.00 ft. <br /> Depth to Water(sounded depth): 4.60 ft. Reference Point: North Side Top Casing <br /> Height of Water Column: 19.40 ft. Casing Diameter: 4 in. <br /> Casing Volume: 12.61 gal= Height of Column x Volume/ft. (2"=0.163, 4"=0.650, 6"=1.43 gal/ft) <br /> Amount to be purged: 37.83 gal = Casing Volume x 3 (volumes required) <br /> Purge Rate: 2•0 gal Purge Method: P10250 <br /> Time Purge Vol pH EC Temp ORP Turb D.O. Comments <br /> gal umhos/cm °C mV mg/L <br /> 1015 Start <br /> 1022 14 9.16 2371 16.4 214.6 Clear 0.52 <br /> 1029 28 9.10 2505 16.6 231.2 Clear 0.39 <br /> 1036 42 9.08 2542 16.7 231.7 Clear 0.33 <br /> 1037 Sample <br /> 1039 Finish <br /> Total Purge Time: 21 min Total Purge Volume: 42 gal <br /> Recharge Depth: 4.75 ft. Time: 1044 Sampling Method: Field Filtered <br /> Decontamination Procedure: <br /> Cleaned and disinfected at laboratory prior to use. <br /> Notes: <br /> Corporate Offices&Laboratory Office&Laboratory Office&Laboratory Office&Laboratory Office&Laboratory <br /> 853 Corporation Street 2500 Stagecoach Road 563 E.Lindo Avenue 3442 Empresa Drive,Suite D 9415 W.Goshen Avenue <br /> Santa Paula,CA 93060 Stockton,CA 95215 Chico,CA 95926 San Luis Obispo,CA 93401 Visalia,CA 93291 <br /> TEL:(805)392-2000 TEL:(209)942-0182 TEL:(530)343-5818 TEL:(805)783-2940 TEL:(559)734-9473 <br /> Env FAX:(805)525-4172/Ag FAX:(805)392-2063 FAX:(209)942-0423 FAX:(530)343-3807 FAX:(805)783-2912 FAX:(559)734-8435 <br /> CA ELAP Certification No.1573 CA ELAP Certification No.1563 CA ELAP Certification No.2670 CA ELAP Certification No.2775 CA ELAP Certification No.2810 <br />