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Response <br />• The typographical error on revised page 2.05-120 has been corrected to read "1902-1925". <br />~~ Rule 2.03 <br />12. Please state whether all tests, analyses and surveys, carried out pursuant to the Boazd's <br />Regulations, were performed or certified by qualified persons (Section 2.03.3(2)). If certain <br />tests, analyses or surveys were not performed or certified by qualified persons, please <br />describe those tests, etc., and discuss why these where not performed or certified by qualified <br />persons. <br />s n <br />Page 2.03-1 has been revised to indicate that all tests, analyses and surveys, carried out <br />pursuant to the Boazd"s Regulations, were performed or certified by qualified persons. <br />13. Please state whether all water quality sampling and laboratory analyses were conducted in <br />accordance with either the current edition of "Standazd Methods for the Examination of <br />Water and Wastewater" or the methodology in 40 CFR 136 and 434 (Section 2.03.3(4)). If <br />certain water quality sampling and laboratory analyses were not conducted in accordance <br />with these methods, please describe that sampling and analysis, and discuss why they were <br />• not conducted according to these methodologies. <br />Response <br />All analytical chemistry was conducted in accordance with the methodology specifically <br />identified in 40 CFR 136 with four subtle exceptions: lithium, thiocyanate, selenium and <br />the total metals digestion. Methods were called out in Exhibits 7 and 8 in Tables GW-4 <br />and SW-2. A statement to this effect has been added to page 8 of Exhibit 7 and page 7 of <br />Exhibit 8. <br />Analytical procedures for lithium aze not specified in 40 CFR 136 or 434, and the <br />laboratory utilized EPA 200.7, the typical ICP metals determination for this analysis, <br />rather than the method identified in "Standard Methods for the Examination of Water and <br />Wastewater". EPA 200.7 is the 40 CFR method approved for most metals. Lithium <br />concentrations were low in the ground water wells and further analyses of this parameter <br />are not proposed. <br />Thiocyanate is not specifically called out by 40 CFR 136, but is generated as a by-product <br />of the free cyanide analysis. EPA 335.3 for cyanide is one of the approved 40 CFR <br />methods. <br />• Selenium was analyzed using the automated technique of the gaseous hydride determination <br />from "Standard Methods for the Examination of Water and Wastewater". The federal <br />3 <br />