Laserfiche WebLink
~ • • <br />The ground water monitoring is, for the most part, voluntary <br />• on the part of Sultan Mountain Mine; however, it is in their <br />best interests to do so to provide an early warning of an <br />e>:cursion of contaminated ground water. The state will <br />probably require some ground water monitoring and is <br />authorized to obtain copies of any additional monitoring <br />results. It may well develope that the program can be <br />reduced in scope, both as to the number of sample sites and <br />the parameters analyzed, as er,perience is gained from the <br />baseline sampling. However, as a minimum, analyses must be <br />made of the parameters specified as effluent standards for <br />New Source Base and Precious Metals Mine Discharges . <br />Note that the discharge permit will specify the sampling <br />requirements at the potential outfalls. It is es:pected that <br />these would conform to the parameters liven in Table No 11, <br />for operational and baseline surface water samples. <br />SAMPLING PROCEDURES <br />Sampling requirements and preservation methods are given in <br />Table No. 12, In essence, all groundwater fractions should <br />be filtered before preservation, while surface water samples <br />should not e::cept for a fraction for analysis of dissolved <br />iron and dissolved manganese. This latter requirement is <br />only for samples collected at sites 24, 25 and 31. <br />• A list of EPA requirements for sample handling and <br />preservation is attached in the appendix. <br />Sodium hydror:ide pellets should be used to minimize sample <br />dilution. Similarly 1:1 HN03 and lOn H2SO4 should be used <br />and the quantity of acid required to Preserve each sample <br />should 6e noted to calculate a dilution factor if an <br />excessive amount were required. <br />All sample containers should be rinsed with acidified <br />distilled water followed by rinsing twice with distilled <br />water. (It is possible to purchase pre-rinsed bottles). The <br />containers should be rinsed once with sample prior to <br />filling. Polyethylene or glass sample containers are <br />suitable; however, polyethylene containers should not be <br />reused far storing the fractions collected for metals <br />analysis because of possible mercury contamination. <br />• -25- <br />