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accessible an&had to be removed at taxpayer expense. Locations for o upstream traps were not then identified. . p am sediment a P nilfed. The Ale roe �s well and their available property on which t Alegre and stockpile material se of road access It was difficult at that time to obtain the necessary permits for dredging.ging. That difficulty had now been somewhat reduced by a Corps Long Term Management Strategy j (LTMS)process which first facilitated the permitting process in the San Francisco Bay. The Corps is now completing a similar facilitation process in the Delta. The County could benefit by proposing the Alegre site for a demonstration of this facilitated process if Alegre would commit to utilizing such a permit and RD 2075 would endorse the effort. Mr. Alegre will write to you to propose that extension. I The rest of this letter is to put on record the protest that we would want to make if the permit to excavate were reinstated. I The following bullets summarize objections to the quarry operation. • The shape of this property is such that the distance that the river flows around the north east end of the property is very much longer than the distance across the quarry area. • The river is prevented by a wing levee from flowing across the neck of the property. • If the wing levee ever fails by overtopping or by rodent holes or other causes,the neck would wash out and the present river channel would fill with silt, and San Joaquin River Water Users agricultural,diversion pumps could not operate. • As the land level has been lowered by quarrying over the last 20 years, the potential for a wash out has been increased. • If the river changes course across the neck it will flow directly toward the downstream RD 2075 levee on the right bank with great force in an area where the river bank has already eroded too close to the levee. If that levee failed it would flood RD 2075,RD 2094, RD 2096, and lands east of those Reclamation Districts. • The wing levee has never been tested at the flood stage that will occur after the design inadequacies in South Delta levees are corrected so that the Design Flood flow of 52,000 cfs at Vernalis is conveyed to the central Delta without broken levees. I The SDWA's flood conveyance plan includes this improvement in South Delta 4 levees. It also proposes that the river no longer be allowed to change course. San t Joaquin County has endorsed that plan, and DWR flood planners are being urged to adopt it. The Alegre land slopes down to the summer river level on the north east end of the property. As the quarry level has been reduced the river end of the property has been eroded and the river has become wider and shallower than it was 20 years ago. ,The direction of flow is also altered to impact the right bank of the T� 2