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Dunn <br /> ENV1RONh(ENTAL,IT:C. <br /> FIELD DATA SHEET <br /> &WELL DEVELOPMENT SHEET <br /> DE PROJECT NUMBER: 109-06 <br /> SITE: City of Riverbank Wastewater Treatment Plant PAGE 3 of 4 <br /> SAMPLING EVENT: OTHER: Development <br /> MONITORING GROUP: QUARTERLY SEMIANNUAL ANNUAL <br /> FIVE YEAR OTHER: <br /> r <br /> Sample Location: MW-11 Date: 5/3/06 <br /> Sample Media: GW X SW Leachate Other <br /> Sampler(s): <br /> Jaco Fourie <br /> Depth to Water: 23.12 ft. Well Depth: 38.38 ft. Well Diam.: 4 in. <br /> Well Casing Volume: 7.63 gal. Purge Volume: 76.3 gal. (3x WCV) <br /> Purge Start Time: —11:30 Purge Rate: gpm <br /> Equipment used to purge: Bailer,Submersible Pump Equipment used to sample: <br /> Temperature Specific Conductance Equipment used to Approximate <br /> Time pH Turbidity (NM (pmbos/cm) purge Gallons Purged <br /> 11:37 19.5 7.02 Muddy 1135 Bailer 18 <br /> 11:46 18.3 7.05 Muddy 1117 Bailer 35 <br /> 12:01 23.4 7.28 >999 1079 Truck pump 52 <br /> 12:06 19.2 6.77 >999 1039 Truck pump 70 <br /> 12:11 19.0 6.74 349 1020 Truck pump 85 <br /> 12:14 19.0 6.74 349 1005 Truck pump 100 <br /> 10:19 18.5 6.71 91.6 1005 Truck pump 120 <br /> 12:26 19.0 6.80 190 1006 Truck pump 130 <br /> Sample Collection Time: VOC collection Rate: MY min. <br /> Duplicate QC Sample Collected? NO YES Duplicate ID: <br /> Additional Analyses: <br /> Weather Conditions: <br /> Notes: Bailed approximately 15 gallons-a lot of sediment at start up Moved to surge after bailing. Surge arm has 2 foot <br /> Stroke Moved back to bailed after surging <br />