Expanded Comments for Meandering, Sinuous, and Straight Rivers 



Comment I . Generally the bed of an active channel should not be dis- 

 turbed. If bed deposits are the only available source, the gravel should 

 be taken by dredging only under strict work plans and stipulations. Refer 

 to Dredging Guidelines (VI B 4). 



Comment 2 . Gravel is available by scraping deposits to near the low 

 summer flow, maintaining appropriate buffers, or no lower than the water level 

 present during the mining operation. Refer to Scraping Guidelines (VI B 2). 



Comment 5 . Gravel is available if suitable buffers are maintained to 

 protect against channel diversion. Refer to Scraping Guidelines (VI B 2), 

 Pit Guidelines (VI B 3), and Buffer Recommendations (V A 3 and Appendix A). 



Comment 4 . Vegetated islands are rare in these river systems and should 

 not be disturbed. It is recommended they be removed from the work plan. 



Comment 5. Vegetated river banks of both active and high-water channels 

 should not be disturbed because of biological and hydraulic alterations. These 

 areas should be removed from the work plan. 



Comment 6 . Gravel is available by scraping in the high-water channel, 

 but precautions must be taken to avoid channel diversion. Refer to Scraping 

 Guidel ines (VI B 2) . 



Comment 7 . Mining in the active or high-water channels of these small 

 rivers is not recommended because there is not much material available. 



Comment 8 . There generally is not much gravel available in these deposits 

 nd they should be avoided. If only a small amount (<I0,000 m ) of gravel 

 s needed, scraping may be considered. Refer to Scraping Guidelines (VI B-2 ) . 



Comment 9. Gravel is available by either pit or scrape methods. Generally 

 these areas should be considered for large amounts of gravel that are not 



64 



VI. SITE OPERATION 



