Polygon Worksheet

Temporal Loss Factor "T" version 4.2 T (Table)This table (version 4.2) to be used after 1Dec99. Version 4.0 & 4.1 are obsolete. Version 4.2 based on discount rate of 3%.YS = 0 = Year of Impact [for an individual permit] = Credit Release Year (T R ) [for a mitigation bank]YS = Year Start = the Year the construction/planting work at the compensatory mitigation site starts.(a) If the compensatory mitigation work starts within the same 12 month period as the impact/credit release, then YS = 0.(b) YS = -1 if the compensatory mitigation work starts one year prior to the impact/credit release, YS = -2 if two years prior, etc.(for example, if mitigation starts in 1999 but impact/credit release in 2000, YS = -1)(c) YS = + 1 if the compensatory mitigation work starts one year after the impact/credit release, YS = +2 if two years after, etc.(for example, if impact/credit release in 2000 and mitigation starts in 2001, YS = +1)YF = Year Finish = when the compensatory mitigation achieves the functional capacity that is described by the "with project"functional assessment score. After this year, the compensatory mitigation is expected to stay at or above the "withproject" score either naturally or as the result of arrangements for perpetual management.(a) If the “with project” score is achieved within the same 12 month period as the impact/credit release, then YF = 1.(b) Otherwise, YF = YS + the number of years to reach the "with project" score (for example, if saplings are planted in thesame year as the impact/credit release and the "with project" score is based on 35 years of growth, then YF = 0 + 35 = 35;but, if the saplings are planted two years prior to impact/credit release, YS = -2, then YF = (-2) + 35 = 33).YS= YF= 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15-4 T= 1.0000 0.9944 0.9859 0.9754 0.9639 0.9517 0.9391 0.9266 0.9133 0.9008 0.8878 0.8750 0.8622 0.8496 0.8371-3 T= 1.0000 0.9933 0.9835 0.9719 0.9593 0.9463 0.9330 0.9199 0.9061 0.8931 0.8798 0.8667 0.8536 0.8408 0.8281-2 T= 1.0000 0.9916 0.9802 0.9672 0.9535 0.9396 0.9256 0.9119 0.8976 0.8842 0.8706 0.8571 0.8439 0.8308 0.8180-1 T= 1.0000 0.9888 0.9752 0.9606 0.9458 0.9310 0.9163 0.9021 0.8873 0.8737 0.8598 0.8462 0.8327 0.8195 0.80660 T= 1.0000 0.9833 0.9670 0.9507 0.9350 0.9195 0.9043 0.8899 0.8748 0.8611 0.8471 0.8333 0.8199 0.8066 0.7937+1 T= 0.9665 0.9503 0.9346 0.9187 0.9034 0.8883 0.8736 0.8597 0.8450 0.8318 0.8182 0.8049 0.7918 0.7789+2 T= 0.9340 0.9182 0.9032 0.8876 0.8727 0.8581 0.8438 0.8305 0.8160 0.8033 0.7901 0.7772 0.7645+3 T= 0.9025 0.8871 0.8727 0.8642 0.8429 0.8288 0.8149 0.8021 0.7879 0.7757 0.7629 0.7504+4 T= 0.8718 0.8569 0.8430 0.8280 0.8140 0.8003 0.7868 0.7745 0.7606 0.7489 0.7365YS= YF= 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30-4 T= 0.8248 0.8126 0.8005 0.7887 0.7770 0.7655 0.7541 0.7430 0.7320 0.7212 0.7105 0.7001 0.6898 0.6797 0.6697-3 T= 0.8155 0.8032 0.7910 0.7791 0.7673 0.7557 0.7443 0.7331 0.7221 0.7112 0.7006 0.6901 0.6798 0.6697 0.6597-2 T= 0.8053 0.7928 0.7806 0.7686 0.7567 0.7451 0.7337 0.7224 0.7114 0.7005 0.6899 0.6794 0.6691 0.6590 0.6491-1 T= 0.7938 0.7813 0.7690 0.7570 0.7451 0.7335 0.7221 0.7109 0.6998 0.6890 0.6784 0.6680 0.6577 0.6476 0.63770 T= 0.7810 0.7685 0.7562 0.7442 0.7324 0.7208 0.7094 0.6983 0.6873 0.6766 0.6660 0.6557 0.6455 0.6355 0.6257+1 T= 0.7664 0.7540 0.7419 0.7300 0.7183 0.7068 0.6956 0.6846 0.6737 0.6631 0.6527 0.6424 0.6323 0.6225 0.6128+2 T= 0.7520 0.7398 0.7278 0.7161 0.7045 0.6932 0.6821 0.6711 0.6604 0.6499 0.6396 0.6294 0.6195 0.6097 0.6001+3 T= 0.7380 0.7259 0.7141 0.7024 0.6910 0.6798 0.6688 0.6580 0.6474 0.6370 0.6268 0.6167 0.6069 0.5972 0.5877+4 T= 0.7243 0.7123 0.7006 0.6967 0.6777 0.6667 0.6558 0.6451 0.6346 0.6243 0.6142 0.6043 0.5946 0.5850 0.5756YS= YF= 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45-4 T= 0.6599 0.6503 0.6408 0.6315 0.6224 0.6133 0.6045 0.5958 0.5872 0.5788 0.5705 0.5605 0.5524 0.5465 0.5368-3 T= 0.6499 0.6403 0.6308 0.6215 0.6124 0.6034 0.5946 0.5859 0.5774 0.5690 0.5608 0.5507 0.5427 0.5369 0.5271-2 T= 0.6393 0.6297 0.6203 0.6110 0.6019 0.5930 0.5842 0.5756 0.5671 0.5588 0.5506 0.5405 0.5326 0.5268 0.5171-1 T= 0.6280 0.6185 0.6091 0.5999 0.5909 0.5820 0.5733 0.5647 0.5563 0.5480 0.5399 0.5298 0.5219 0.5163 0.50660 T= 0.6160 0.6066 0.5973 0.5882 0.5792 0.5704 0.5617 0.5532 0.5449 0.5367 0.5286 0.5186 0.5108 0.5053 0.4956+1 T= 0.6032 0.5939 0.5847 0.5757 0.5668 0.5581 0.5496 0.5412 0.5329 0.5248 0.5168 0.5090 0.4992 0.4916 0.4864+2 T= 0.5907 0.5815 0.5724 0.5635 0.5547 0.5461 0.5376 0.5293 0.5212 0.5132 0.5053 0.4976 0.4900 0.4803 0.4729+3 T= 0.5784 0.5693 0.5603 0.5515 0.5428 0.5343 0.5260 0.5178 0.5097 0.5018 0.4940 0.4864 0.4789 0.4715 0.4619+4 T= 0.5664 0.5574 0.5485 0.5398 0.5312 0.5228 0.5146 0.5064 0.4985 0.4907 0.4830 0.4754 0.4680 0.4607 0.4536YS= YF= 46 47 48 49 50 51 52 53 54 55-4 T= 0.5291 0.5216 0.5142 0.5091 0.4998 0.4949 0.4880 0.4813 0.4746 0.4680-3 T= 0.5195 0.5120 0.5047 0.4996 0.4903 0.4856 0.4787 0.4720 0.4654 0.4589-2 T= 0.5095 0.5021 0.4948 0.4898 0.4805 0.4759 0.4691 0.4624 0.4558 0.4494-1 T= 0.4991 0.4917 0.4845 0.4796 0.4703 0.4658 0.4591 0.4524 0.4459 0.43950 T= 0.4882 0.4809 0.4737 0.4690 0.4598 0.4553 0.4487 0.4421 0.4357 0.4293+1 T= 0.4770 0.4696 0.4625 0.4556 0.4511 0.4420 0.4378 0.4314 0.4250 0.4188+2 T= 0.4680 0.4586 0.4516 0.4447 0.4379 0.4338 0.4248 0.4209 0.4146 0.4084+3 T= 0.4548 0.4501 0.4408 0.4341 0.4274 0.4208 0.4169 0.4081 0.4044 0.3983+4 T= 0.4441 0.4372 0.4328 0.4236 0.4171 0.4106 0.4042 0.4006 0.3918 0.3884