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<br />Page 3 August 19, 1994 Memo <br />Ridge Road. Results are reported in µCi/ml. <br />Radon 222 - is monitored at three locat.~ons on a <br />quarterly basis, utilizing Track-Etch Ftadon 222 <br />detectors. Two of the locations are on site, near <br />the west and NE property boundaries. The third is <br />off site on Pine Ridge Road. Results are reported <br />in pCi/1. <br />Water Monitoring <br />Surface Water - is conducted on a monthly basis at <br />four Ralston Creek instream sampling locations and <br />at the water treatment plant discharge point. <br />Analysis is for dissolved and suspended 1J-nat and <br />Ra 226. Results are reported in µCi/rtil and/or <br />µ9/1. <br />Groundwater - is conducted on a quarterly basis at <br />eight on site well locations depending on .he water <br />table elevation. Analysis is for dissolved and <br />suspended U-nat and Ra 226. Results are reported <br />in µCi/ml and/or µg/1. <br />Sediment Sampling - performed on samples collected in <br />Ralston and Long Lake reservoirs, the water t:reatment <br />plant emergency storage pond and at five surface water <br />sampling locations on an annual basis for concentrations <br />of uranium, Ra 226, Th 230, Po 210 and Pb 210. Results <br />are reported in µCi/g. <br />Soil Sampling - performed on samples collected at three <br />environmental air monitoring stations on an annual basis <br />for concentrations of uranium, Ra 226, Th 230, P~~ 210 and <br />Pb 210. Results are reported in µCi/g. <br />Vegetation Sampling - performed on samples collected <br />times during the annual growing season at each of three <br />environmental air monitoring stations for concentrations <br />of uranium, Ra 226, Th 230, Po 210 and Pb 210. Results <br />are reported in µCi/kg. <br />Environmental TLDs - is conducted at th=_ three <br />environmental air sampling locations on a quarterly <br />basis. Results are reported in µR/hr. <br />You asked about the commercial price for performing some of the <br />analyses. I don't have this information on hand, but if you are <br />unable to obtain quotes from commercial laboratories, you could <br />