Fig. 8. Type transfer function (TTF) concentration estimates for Day 200 (a–c) and Day 700 (d–f) of the simulation period in response to a single, label-recommended application of atrazine for eastern Fresno County. All estimates were made under consideration of spatially distributed annual recharge and for a compliance depth of d = 3 m. (a) TTF Set III (one TTF for each texture). (b) TTF Set IVa (two TTFs for each texture, lower estimate). (c) TTF Set IVb (two TTFs for each texture, higher estimate). (d) TTF Set III (one TTF for each texture). (e) TTF Set IVa (two TTFs for each texture, lower estimate). (f) TTF Set IVb (two TTFs for each texture, higher estimate).