EXH1096041556

PCHBPollution Control Hearings Board of the State of Washington

Annual maximum 1-7 day April-October rainfall probability plots .......................................... 33 Annual maximum 1 day April-October preclpltaUon ............................................................ 33 Annual maximum 2 day April-October preclp_tauon ............................................................ 34 Annual maximum 3 day April-October preclpltauon ............................................................ 35 Annual maximum 4 day April-October preclpltaUon ............................................................ 36 Annual maximum 5 day April-October preclp_taUon ............................................................ 37 Annual maxLmum 6 day April-October preclpltaUon ............................................................ 38 Annual maximum 7 day April-October preclpltaUon ............................................................ 39 AR 041557 Appendix A: Estimating the Exceedanc¢ Probability for a Given Rainfall .................................. 40 One Month, Rainfall to Probability ........................................................................................... 42 Table Ala. Slope estimates for one-month rainfall-to-probability equations ....................... 42 Table Alb. Intercept estimates for one-month rainfall-to-probability equations .................. 42 TwoMonths,Rainfallto Probability.........................................................................................43 Table A2a. Slope estimates for two=month rainfall=to=probability equation,_....................... 43 Table A2b. Intercept estimates for two=month rainfall-to=probability equations ................. 43 Three Months, Rainfall to Probability ....................................................................................... 44 Table A3a. Slope estimates for three-month rainfall-to=probability equations ..................... 44 Table A3b. Intercept estimates for three=month rainfall-to-probability equations ............... 44 Four Months, Rainfall to Probability ......................................................................................... 45 Table A4a. Slope estimates for four-month rainfall-to-probability equations ...................... 45 Table A4b. Intercept estimates for four-month rainfall-to-probability equations ................. 45 Five Months, Rainfall to Probability ......................................................................................... 46 Table A5a. Slope estimates for five-month rainfall-to-probability equations ...................... 46 Table ASb. Intercept estimates for five-month rainfall-to-probability equations ................. *)6 Six Months, Rainfall to Probability ........................................................................................... 47 Table A6a. Slope estimates for six=month rainfall-to-probability equations ........................ 47 Table A6b. Intercept estimates for six-month rainfall=to=probability equations ................... 47 Seven Months, Rainfall to Probability ...................................................................................... 48 Table A7a. Slope estimates for seven-month rainfall-to-probability…
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