31. The wall comes out like a riprap conglomerate wall, which is exactly what it is. 32. Several grouted riprap drop structures have been built here to protect the trail from stormwater erosion. 33. They also have a permit to repair of the creek's streambank and install riprap . 34. The dam is rammed earth and riprap with a clay lining high, impounding some of water. 35. The open channel is 1500 feet long and about 20 feet, and is lined with riprap . 36. The riprap is thick on the upstream ( reservoir ) side and thick on the downstream side. 37. However, the landowner was permitted to haul debris away from the site to use as riprap . 38. The Pennsylvania Game Commission has a permit to maintain the riprap and the streambed with the wingwalls. 39. To that end, they poured all the offseason concrete and riprap into the defense and the bullpen. 40. Protection includes a sea wall, a riprap , groynes and a permeable groyne as well as drainage.
