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will be installed as necessary to adequately monitor variations in water quality and groundwater <br /> flow direction. <br /> Water quality samples from site monitoring wells on a periodic basis in order to evaluate possible <br /> changes in water quality. The sampling frequency will be weekly for the first month, biweekly for <br /> the second month, monthly for the third month and then quarterly until project termination. <br /> 2.2 Sampling Method Requirements <br /> All groundwater samples will be obtained using protocol presented in the Work Plan. All samples <br /> will be analyzed after the 0.45 Nm filtration with the exception of field parameters. The samples <br /> will be collected in appropriate sample containers and will be transported to the laboratory under <br /> strict chain-of-custody procedures and holding times. Samples will be analyzed for alkalinity as <br /> bicarbonate and carbonate, chloride, fluoride, phosphorus, nitrate, nitrite, and sulfate along with <br /> other metals aluminum,antimony, arsenic, barium, beryllium, boron,calcium, cadmium, chromium, <br /> cobalt, copper, iron, lead, lithium, manganese, mercury, molybdenum, nickel, phosphorous, <br /> potassium, selenium, silver, thallium, titanium, uranium, vanadium and zinc. Field parameters such <br /> as pH, conductivity and temperature will be measured with a HyDAC digital conductivity, pH and <br /> temperature meter. <br /> 2.3 Sample Handling and Custody Procedures <br /> 2.3.1 Sample Identification <br /> A sample identification scheme will be used that maintains consistency for the names of water <br /> quality samples, as well labels affixed to each sample container, and entered on to the Chain-of- <br /> Custody (COC)forms. The following scheme will be followed: <br /> I. Samples from the field study will be identified by the monitoring well it was obtained <br /> from. For example water obtained from monitoring well MW-1 would be identified as <br /> PT-M W-1. <br /> 2. Water samples obtained from the gravel quarry will be identified as Pond. <br /> 2.3.2 Sample Method Requirements <br /> Analytical procedures for water and soil samples will conform to the USEPA guidelines described <br /> in SW 846 (Test Methods for Evaluating Solid Waste/Physical/Chemical Methods, 3rd ed.). Table <br /> 1,presents the analyses that are anticipated on the project. <br /> 2.3.3 Sample Custody <br /> Strict chain-of-custody (COC) protocol will be maintained throughout the life of the field program <br /> and will be controlled through the use of a COC Record supplied by the laboratory. The following <br /> procedures will be used to document, establish,and maintain custody of field samples: <br /> • Sample labels will be completed for each sample using waterproof ink; making sure that <br /> the labels are legible and affixed firrttly on the sample container; <br /> • All Sample-related information will be recorded in the project log book; <br /> • The field sampling technician will retain custody of the samples until they are transferred <br /> or properly dispatched to a laboratory; and, <br /> • As fieldwork is conducted the on-site CGRS technical lead will determine whether these <br /> procedures are being followed, if corrections need to be made, and if additional samples <br /> are required. <br /> Vaua Companies <br /> Quahly Assurance Projecl Plan <br /> Page 7 <br />