California Rapid Assessment Method for Wetlands - State Water ...

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California Rapid Assessment Method for Wetlands v. 5.0.2 – Appendix I Step 5: Identify any Sample Universe that is only large enough for two or three AAs, and assess all thee AAs that comprise the Sample Universe. If at least 20% of any AA is outside the boundary of the Sample Universe, then, to the extent possible, re-shape the AA so that it fits entirely within the Sample Universe (Figure 4). After completing Step 5, go to Step 8. Step 6: For each Sample Universe large enough for more than three AAs, assess the first two AAs randomly selected from the Sample Frame. If at least 20% of a selected AA is outside the boundary of the Sample Universe, then reshape the AA so that it fits entirely within the Sample Universe (Figure 4). Average the overall sites scores for these first two AAs. After completing Step 6, go to Step 7. Step 7: For each Sample Universe identified in Step 6, complete the assessment. Randomly select and assess a third AA. If the overall CRAM score for the third AA differs from the average score of the first two AAs by more than 15%, randomly select and assess a fourth AA. If the overall score for the fourth AA differs from the average score of the first three AAs by more than 15%, then randomly select and assess a fifth AA. If at least 20% of any AA is outside the boundary of the Sample Universe, then, to the extent possible, re-shape the AA so that it fits entirely within the Sample Universe (Figure 4). Continue this process until the overall score for the latest AA does not differ from the average score for all the previous AAs by more than 15%. After completing Step7, go to Step 8. Step 8: Upload the CRAM results for each AA to the CRAM website. Candidate AA Figure 2: Map of the maximum number of candidate AAs generated in a GIS. 104
California Rapid Assessment Method for Wetlands v. 5.0.2 – Appendix I AA rejected from Sample Frame for being more than 50% outside of the Sample Universe Figure 3: Map of the maximum number of candidate AAs showing AAs rejected for being more than 50% outside of the sample universe (red AAs. 2 3 1 4 AA that will remain a circle if selected for assessment 5 6 7 8 9 10 11 12 13 14 15 16 17 18 AA that will be reshaped to fit within the sample universe if selected for assessment Figure 4: Sample Frame of final candidate AAs showing those entirely within the Sample universe (grey AAs) that do not have to be re-shaped if selected for assessment, and THOSE at 20% outside the sample universe (yellow AAs) that have to be reshaped if assessed. Each AA of the sample frame is numbered for random selection. 105
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