Current through Register Vol. XLI, No. 37, September 13, 2024
Section 38-4-6 - Plans and Specifications6.1. Plans and Specifications: Plans and specifications relating to the design, placement, construction, enlargement, alteration, removal, abandonment, or repair of a dam must be prepared in accordance with the requirements of Section 6 through 12 of these rules.6.2. Engineers' Signature and Seal: All plans and specifications shall be signed and sealed by an engineer, the engineers' signature and seal are required on each plan sheet and front page of engineering report.6.3. Standard Practices: All engineering designs, procedure processes, and analysis shall be based upon standard accepted, and sound engineering practices. Practices which are questionable or difficult to prove analytically may be rejected by the Secretary or returned for additional information.6.4. Plan Package: Each plan package submitted for approval shall contain the following information, arranged in the following order: 6.4.a. Project Narrative: A general narrative discussion of the project shall be included in the plan package and detail the following:6.4.a.1. Existing site conditions;6.4.a.2. Local geology and geotechnical considerations;6.4.a.3. Design life of dam and its appurtenances;6.4.a.4. Subsidence potential;6.4.a.5. Design techniques with associated design computations and data;6.4.a.6. Environmental protection measures for the control of erosion and sedimentation and for the disposal of construction wastes;6.4.a.7. Method of construction, including clearing and grubbing, topsoil stockpiles, surface and subsurface drainage structures;6.4.a.8. Phases of construction, and6.4.a.9. Routine inspection and maintenance procedures and schedules.6.4.b. Construction Sequence and Schedule: A proposed or recommended sequence of construction, with a schedule listing the completion date for each milestone, shall be included in the plan package to cover the following general categories: 6.4.b.1. Sediment control measures;6.4.b.2. Clearing and grubbing;6.4.b.3. Road or utility relocations;6.4.b.4. Development of borrow areas;6.4.b.5. Placement of coffer dams or diversions;6.4.b.6. Excavation of foundation areas;6.4.b.7. Excavation of spillways;6.4.b.8. Placement of embankment or structural materials;6.4.b.9. Placement of spillways and appurtenances to spillways;6.4.b.10. Seeding and mulching;6.4.b.11. General cleanup;6.4.b.13. Other information requested by the Secretary.6.4.c. Project Specifications: Specifications shall be included in the plan package to detail the following:6.4.c.1. Clearing and grubbing;6.4.c.2. Soil stockpiles;6.4.c.3. Sub drain construction;6.4.c.6. Surface drainage structures;6.4.c.7. Spreading and compaction requirements including lift thickness, compaction density testing, moisture content;6.4.c.8. Material and gradation requirements for sub-surface drainage structures;6.4.c.9. Pipe quality, pipe installation and pressure testing requirements;6.4.c.10. Concrete including testing and curing;6.4.c.11. Anti-seep mechanisms or graded filter;6.4.c.12. Cut-off trenches;6.4.c.13. Channel and slope protection;6.4.c.14. Project quality control including inspection frequency, certification and reporting requirements;6.4.c.16. Construction erosion and sediment control;6.4.c.17. Construction waste disposal;6.4.c.18. Dust abatement;6.4.c.19. Revegetation including soil amendment;6.4.c.20. Installation and instrument monitoring;6.4.c.23. Other information requested by the Secretary.6.4.d. Maps and Drawings:6.4.d.1. Maps shall be included in the plan package showing the project area in relation to primary highways, county routes, and major drainages. County highways maps may be used for the purpose.6.4.d.2. A map showing the limits of the watershed with respect to the project area shall be included in the plan package. The minimum map scale meeting this requirement is a 7-1/2 minute United States Geological Survey Topographic map with project area plotted in it.6.4.d.3. A plan view of the project area that shows all disturbed and reservoir areas shall be included in the plan package showing detailed contour intervals (i.e., five foot maximum interval).6.4.d.3.A. The location of following items, if present shall be plotted on the plan view map: 6.4.d.3.A.2. Cemeteries and graves;6.4.d.3.A.5. Underground mine openings;6.4.d.3.A.6. Mine drainage;6.4.d.3.A.7. Underground mine workings;6.4.d.3.A.8. Cross-sections borings and test pits;6.4.d.3.A.9. Reference points and permanent stations;6.4.d.3.A.10. Instrumentation such as piezometers, settlement markers and slope indicators;6.4.d.3.A.11. Diversion channels;6.4.d.3.A.12. Subdrain system;6.4.d.3.A.13. Surface water drainage channels;6.4.d.3.A.14. Borrow areas;6.4.d.3.A.15. Waste disposal areas;6.4.d.3.A.16. Plan views of each stage of construction of dam and corresponding profiles indicating minimum factor to safety;6.4.d.3.A.17. Plan views of spillways and appurtenances and corresponding profiles;6.4.d.3.A.18. Transverse and longitudinal cross-sections and profiles of dam shall be included in the plan package showing original ground, sub drain locations, elevations, benches, spillways. Cross-sections at critical locations in the facility shall be provided showing the materials profile, location of critical potential failure surfaces and their factor of safety, estimated or measured phreatic surfaces for construction and/or long term seepage conditions, and a tabulated listing of strength parameters used for stability analysis;6.4.d.3.A.19. Cross-sections and profiles of major drainage facilities shall be included in the plan package;6.4.d.3.A.20. Construction drawings shall be included in the plan package showing sub-drains, spillways, anti-seep mechanisms, and other pertinent structures.