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Ryegrass Limited Purpose Landfill and Balefill Closed Landfill <br />Groundwater and Leachate Sampling and Analysis Plan <br />Kittitas County Solid Waste <br />Table 3. Field Stabilization Criteria <br />Parameter Criteria <br />Specific Conductance <br />Within 3% <br />Dissolved Oxygen <br />Within 10%for greater than 0.5 mg/L, if three DO values are less than 0.5 mg/L, <br />consider the values as stabilized <br />pH <br />t0.1 <br />Temperature <br />Within 3% <br />ORP <br />+/- 10 millivolts <br />Turbidity <br />Sample if turbidity is less than 5 NTU after all other parameters have stabilized, if <br />greater than 5 NTU sample within 15 minutes of stabilization and record values <br />Table 4. Sample Containers, Preparation, Preservatives, and Holding Times for Water Samples <br />Sample <br />Preservation and <br />Holding <br />Analyses <br />Container <br />Container Size <br />Handling <br />Times12 3 <br />Alkalinity/Bicarbonate <br />HDPE Plastic <br />250 ml <br />Keep on ice (4'C) <br />14 days <br />Filter through 0.45- <br />Metals, filtered <br />HDPE Plastic <br />500 ml <br />pM acrylic copolymer, <br />6 months <br />HNO3t0 pH < 2 <br />Total Metals, unfiltered <br />HDPE Plastic <br />500 ml <br />HNO3 to pH < 2 <br />6 months <br />Chloride/Sulfate/Nitrate <br />HDPE Plastic <br />500 ml <br />Keep on ice (4'C) <br />28 days <br />7 days <br />Ammonia <br />HDPE Plastic <br />250 ml <br />Keep on ice (4"C) <br />H2SO4tO pH <2 <br />28 days <br />Total Organic Carbon <br />HDPE Plastic <br />250 ml <br />Keep on ice (4°C) <br />H2SO4tO pH <2 <br />28 days <br />Total Suspended Solids <br />HDPE Plastic <br />250 ml <br />Keep on ice (4'C) <br />7 days <br />Total Dissolved Solids <br />HDPE Plastic <br />250 ml <br />Keep on ice (4'C) <br />7 days <br />Glass vials; Teflon -lined <br />HCI4 Fill leaving NO <br />7 days, <br />Volatile Organics <br />silicon septum caps <br />(3) 40 ml <br />AIR SPACE, keep in <br />14 days if <br />dark on ice (4'C) <br />preserved <br />Vinyl Chloride, 1,2- <br />Glass vials; Teflon -lined <br />(3) 40 ml <br />HC14, Fill leaving NO <br />AIR SPACE, keep in <br />7 days: <br />14 days if <br />Dibromoethane <br />silicon septum caps <br />dark on ice (4"C) <br />preserved <br />pH, temperature specific <br />HDPE or glass beaker <br />In field <br />conductivity <br />1 APHA-AWWA-WPCF 2011. Standard Methods for the Examination of Waste and Wastewater, 17th edition <br />2 U.S. Environmental Protection Agency 1983. Methods for Chemical Analysis of Water and Wastes. <br />3 U.S. Environmental Protection Agency 2018. Test Methods for Evaluating Solid Waste (SW-846). <br />HNOs - Nitric Acid, H;:SO4 - Sulfuric Acid, HCL - Hydrochloric Acid <br />April 2024 1 553-1763-010 T-2 <br />Revised May 2024 <br />