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- 22 - Structure No. 48 is a recently constructed inverted siphon that is to have a trashrack constructed at its inlet. Inverted siphon No. 52 will replace a rectangular wooden f1 ume . The wooden division structure No. 53 at the end of the South Branch of the Pine. River Canal will be replaced with a concrete check and headgate structure. The estimated installation cost of the eighteen structures in Group B is $82,432. (Group C) Group C consists of the major structures on the North Branch of the Pine River Canal, resectioning of a portion of the North Branch of the Pine River Canal, and installation of needed headgates and Parshall flumes for the entire Pine River Canal. Concrete chute No. 27 replaces eroded wooden drop structures No. 26, Z7, and 28. Waste structure No. 29 will be installed just upstream from inverted siphon No. 29 which has been recently built. Structures No. 33, 35, 36, and 37 are concrete pipe inverted siphons that will replace semi-circular wooden flumes across flood channels. (Refer to Figure 2, "Typical Siphon Structure".) Wooden flume No. 34 will be replaced with an earthfill canal section. A diversion channel will be constructed to carry natural runoff from the streambed crossed by No. 34 to the inverted siphon crossing No. 33. Slipform concrete chute No. 38 replaces a drop structure and a short section of the canal that has an uncontrolled grade drop. It will have a 2 ft. bottom trapezoidal cross section.. Structure No. 39 is a concrete drop replacing a wooden drop near the end of the North Branch of the Pine River Canal. Group C includes the replacement of 46 headgates and 46 Parshall measuring flumes at farm and lateral turnouts. This consists of 29 turnouts where both headgate and measuring flume will be replaced, and 34 turnouts where either the headgate or the flume is to be replaced. There are a total of 104 turnouts along the Pine River Canal.