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This document summarizes and reports a literature search of 85 environmental monitoring records of wildl ife and vegetation (biota) at the 200 East Area and the 200 West Area of the Hanford Site since 1965. These records were published annually and provided the majority of the data in this report. Additional sources of data have included records of specific facilities, such as site characterization documents and preoperational environmental surveys. These documents have been released for public use. Records before 1965 were still being researched and therefore not included in this document. The intent of compiling these data into a single source was to identify past and current concentrations of radionuclides in biota at specific facilities and waste sites within each operable unit that may be used to help guide cleanup activities in the 200 Areas to be completed under the Comprehensive Environmental Response and Liability Act (CERCLA). The 200 East Area and 200 West Area were the locations of the Hanford Site separation and process facilities and waste management units. These Areas, consisting of about 40 km, were centrally located within the Hanford Site about 10 km south of the Columbia River and 30 km northwest of Richland, Washington (Figure 1). For the purposes of this document, a sample was of interest if a Geiger-Mueller counter equipped with a pancake probe indicated beta/gamma emitting radioactivity above 200 counts per minute (cpm), or if laboratory radioanalyses indicated a radionucl ide concentration equaled or exceeded 10 picocuries per gram (pCi/g). About 4,500 individual cases of monitoring for radionuclide uptake or transport in biota in the 200 Areas environs were included in the documents reviewed. About 1,900 (i.e., 42%) of these biota had radi onucl ide concentrations in excess of 10 pCi /g. These radi onucl i de transport or uptake cases were distributed among 45 species of wildlife (primarily small mammals and feces) and 30 species of vegetation. The wildl ife species most commonly associated with radioactive contamination were the house mouse and the deer mouse and of vegetation species, the Russian thistle. The data showed that the highest radionuclide concentration in vegetation was in Russian thistle (3.2Et06 pCi/g of strontium-90) in 1981 at the 216-BC Cribs. As a comparison, the WHC strontium-90 soil standard for releasing an area from radiological controls in the 200 Areas is 2.8E+03 pCi/g. Since 1965, there have been about 1,100 cases of radionuclide uptake by vegetation in the 200 Areas that resulted in radioactivity greater than 200 cpm or in concentrations greater than l.OE+Ol pCi/g. The highest radionuclide concentration in wildlife (6.6E+10 pCi/g of strontium-90) was in a house mouse from 241-BX Tank Farm in 1991. Since 1965, there have been about 830 cases of radionuclide uptake by wildlife, nearly all small mammals or feces, in the 200 Areas that resulted in concentrations greater than l.OE+Ol pCi/g. of the 50 highest radionuclide concentrations found in biota in the 200 Area...

WHC-SD-EN-TI-198, Rev. 0 J 4.3.1 Inor_c Constituents The concentrationof arsenic was greaterthan the 95 %UTL value in sample B07NG4 from location N. Concentrationsof chromiumwere greater than the 95% UTL value in samples B07NF9 and BOTNG4collected at locations KU1 and N; the maximum of 64.1 mg/kg occurs in sample B0_9 collected from the 12 to 18-in. interval bls at location KU1, Concentrations dlead weregrea_er than',he 95%UTLvaluesinall samplesexcept B07NG2. Concentrationsof zinc exceeded the 95%UTL in all samples. The maximum concentrations of chromium, lead, and zinc from the 100 K Area occur in sample BO7NF9 collected from the 12 to 18-in. intervalbls at location KU1. 4.3.2 Radlonucllde Constituents The maximum concentrations of potassium-40, radium.226, unnium-233/234, uranium-238, thorium-228, and thorium-232 in the 100 K samples are generally similar to those from the Veruita area, as shown in Table 4-4. The concentrationsof cesium-137 and europium-152 in sample B07NF9 exceed those found in Vemita or 100 B/C samples. Europium.152 was not detected at the Vernitaarea or 100 B/C Area samples. The cesium-137 and europium-152concentrations from 100 K Area samples are 0.45 and 0.32 pCi/g, respectively. 4.3.3 Grain-Size Analysis Samples B07NGI, B07NG2, and B07NG4 consists predominantly of medium-and fine-grained sand. Medium-grained sand coastitutes 45 %, 27 %, and 54% of the samples, and irme-grainedsand 55 %, 65 %, and 46%, respectively..All three samples contain < 10% (by weight) silt and clay. Medium-grained sand constitutes 2% of samples B07NF9 and B07NGO, both of which are from location KU1. Fine-grained sand constitutes55 % and 83%, respectively, of samples B07NF9 and B07NGO. The remaining 43% and 15% consists of silt and clay. Sample B07NF9 contained 39% silt and 5 % clay. The individual silt and clay percentages are not provided for sample BOTNGO. 4.4 100 D .AREA Six samples and three QC samples were collected at four locations in the 100 D Area as shown in Figure 4-4. The sediments were collected on the shore. During sampling the Columbia River shoreline was at a lower elevation than is shown in Figure 4-4. Samples B07NF1 and BO7NF2were collected at location DS, a small sandy beach just upstream of the 100 D intakestructure, 10.3 mi downstreamof the Vemita Bridge. Samples B07ND4 and B07ND7 were collected at location DI1. Samples B07ND6 and B07N8 were collected at location DI2. Samples B07NHS, B07NH6, and B07NH7 were collected at location DI3. Locations DI1, DI2, and DI3 are about 11,3 mi downstreamof the Vemita Bridge. Field 4-5 WHC.SD.EN-TI-198, Rev. 0 ' ' screening _ents indicated backgroundlevels of B7 and ,y activity at all I00 D sampling locations. Samples B07NF1 and B07_ were collected from the 0 to 6..in. and 12 to 18-in. • intervals bls, respectively. On D Island six samples were collected _m the 0 to 6-in. interval bis, only sample B07ND5 was collected from the 12 to iS-in, interval bls, The sample location coordinates, dis'amcefrom VernltaBridge (In.miles), _le dates, intervals sampled, median...

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