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<br />Section 1 <br /> <br />Task Summary <br /> <br />Task 6 - Perform Water Quality Sampling and Compile Performance <br />Monitoring Information <br /> <br />Throughout the pilot test it will be necessary to collect water quality samples <br />from the various process streams to determine membrane performance and the <br />potential for mineral scaling Most of the samples will be analyzed for the <br />common dissolved ions in groundwater along with silica, nitrates, iron, <br />manganese, and some trace elements. The field engineer will also measure <br />conductivity, pH, and turbidity or SDI as part of the daily field checks, and this <br />will provide the pilot plant team real time information a bout the performance of <br />the system The water quality data will be compiled to a spreadsheet for trend <br />analysis. <br /> <br />'IIIl Assumptions: Since the brine streams will be recombined, the quality will be <br />similar to the retuned original concentrate from the Lochbuie RO treatment <br />plant, which is being discharged to the wastewater treatment plant. As a <br />result, it will not be necessary to provide additional and routine samples for <br />discharge permit compliance monitoring. No toxicity testing of the residual <br />streams is necessary since the intent is not to discharge the residual liquid in <br />any surface water. The water is also not being used for potable water, so <br />sampling for compliance with CDPHE regulations is not required. <br /> <br />'IIIl Deliverable: Monthly electronic copy of the water quality database. <br /> <br />'IIIl Level of Effort: The sampling will be done as part of the daily site visits, and <br />is expected to average 1 hour per day The results of the samples will be <br />distributed monthly to the pilot testing team and ECC\!. <br /> <br />Task 7 - Prepare Pilot Testing Report <br /> <br />The equipment configuration, performance data, and water quality sampling for <br />each of the test scenarios will be summarized in a Pilot Testing Report. The <br />report will present conclusions regarding the ability of each brine concentration <br />process to achieve ZLD. The report will describe whether optimal performance <br />was achieved, and what are the critical factors affecting the operation of the <br />treatment process A section describing each treatment, and an assessment of the <br />process and equipment relia bility. The draft report and the results of the pilot <br />testing program will be presented to the project stakeholders for the propose of <br />soliciting review comments. <br /> <br />'IIIl Assumptions: The report will be prepared after the trea tment system has <br />been pushed to the operating limits and the water quality information has <br />been compiled. <br /> <br />'IIIl Deliverable: 10 copies of the preliminary report will be prepared and <br />distributed for review and comments. 30 copies of the final report <br />incorporating the review COlmnents will be distributed to the project <br />participants <br /> <br />1-4 <br />