7509.11_10 Page 1 of 1 11.1 - Required Data. Design Records. Moderate and low hazard class D dams and structures, including those used as stock tanks, shall be designed for the specific site and watershed conditions. Construction drawings and specifications shall be prepared by a qualified engineer (FSM 7504 R-3 Supplement). Soil scientists and hydrologists will be used as needed in evaluating the site, watershed, water need, and design flood. An involved design process will normally not be necessary, but acceptable materials must be found, the spillway must be sized correctly and the reservoir must be efficient and sized to provide water throughout the use season. Drawings, as a minimum, shall consist of a sketch of the dam and reservoir site, showing the dam, spillway, and reservoir configuration and cross sections of the dam and spillway. Horizontal and vertical distances shall be measured accurately and shown on the drawings. Material sources for each embankment zone will be shown. Required rip-rap and channel stabilization will be shown. The dam, spillway, and borrow areas shall be staked on the ground in such a way as to guide the construction and during the final inspection to verify that plans were followed. Specifications can be as simple as one or two pages of written instructions on proper embankment compaction, foundation preparation, and materials use.