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HomeMy WebLinkAboutCorrespondence tit tit 6: I have included copies of the following for your use: . Subdivision Project Approval Procedures . Performance Release Procedure . Subdivision Building Permits . Permit Data, Contacts, etc. . Subdivision Sign requirements BONDING REQUIREMENTS 7. Upon initial review, it appears the following bonding requirements may apply to this project: Performance Guarantees/Engineer's Estimates Individual Performance Guarantees will be required for the following subdivision improvements if the interior streets are to be private: . Perimeter Street Right of Way Improvements including right of way pavement (entrance,accel, decel, passing blister), stone shoulder, curbs, asphalt path/concrete sidewalk, etc. Individual Performance Guarantees will be required for the following subdivision improvements if the interior streets are to be public: . Streets (perimeter road improvements may be bonded separately) . - Curb and Gutters . Street Signs . Builder's Lot Sidewalks . All other right of way Sidewalks/Asphalt Paths The amount of the Performance Guarantee is based upon a certified Engineer's Estimate for 100% of the cost - of labor and materials to construct the individual improvements, to be provided by the design engineer. Please provide detailed Engineers Estimates for each improvement including unit costs, quantities, materials and types of materials, etc. Upon completion and release of individual Performance Guarantees, a three-year Maintenance Guarantee will be required. The Maintenance Guarantee amount is based upon 15% of the Performance amount for Streets and Curbs and 10% of the Performance amount for all other improvements. . Performance Guarantees may be Performance or Subdivision Bonds or Irrevocable Letters of Credit. Please reference the enclosures for more detailed explanation of our procedures. Other jurisdictions: This development is within the service area of the Indianapolis Water Company for water and within the service area of the Clay Township Regional Waste District for sanitary sewers. These entities should be contacted directly regarding bonding requirements. Storm sewers/drainage fall within the jurisdiction of the Hamilton County Surveyor's Office. It is our understanding that they will require bonding for storm sewers/drainage including subsurface drains. They will also require bonding for erosion control and for monuments and markers. Please contact the Surveyor's office directly to verify their requirements. Right of Way Permit and Bonding . Any work in the dedicated right of way of 116th Street and/or Hoover Road, not included in construction covered by a Performance Guarantee, will require a Right of Way Permit and a License & Permit bond. The bond amount will be determined by the number of instances of work in the right of way @$2,000.00 per instance. The drawing indicates a water main extension under 116th Street. This will require a permit. We request that this crossing be a directional bore. Any open cut in the pavement of 116th Street and/or Hoover Road will require separate Board of Public Works and Safety approval. 8. We have engaged Crossroad Engineers, PC to review all drainage plans and drainage calculations submitted for review to this office. We will share Crossroad's comments as they are received. When construction plans are submitted for T.A.C. review for this development, please provide 2-sets of plans and calculations to allow us to send the extra set to Crossroad and save some time in the review process. COMMENTS - PRIMARY PLAT 9. Please label 116th Street more clearly. 10. Please indicate and label the existing and proposed right-of-way for 116th Street and Hoover Road. If the existing right-of-way is less than that prescribed in the thoroughfare plan, the additional right-of-way must be dedicated. 11. Please indicate and label all existing driveways, streets, and entrances and all proposed entrances of other developments on 116th Street and Hoover Road. 12. Please provide a profile of 116th Street across the frontage and provide an evaluation of the stopping sight distance at the entrance for vehicles turning from and onto 116th Street. 13. Please label the cul-de-sac radii. These shall meet the minimum City standard. tit tit 14. Please label the curb return radii at the intersection of 116th Street and the entrance. These shall meet the minimum City standard and shall be labeled on the plat. 15. At the entrance, a deceleration lane, an acceleration lane, and a passing blister will be required and must be indicated on the plat. The passing blister requirement shall be waived if the entrance is aligned with an existing entrance. The dimensions of these auxiliary lanes will be according to the road functional classification prescribed by the City of Carmel Twenty Year Thoroughfare Plan. 16. Please indicate widening across the property frontage or to the extents of the auxiliary lanes, whichever is greater for 15-foot travel lanes on the property side of 116th Street and Hoover Road. Auxiliary lanes shall be measured from the edge of the 15- foot travel lane. Please add a note to the site plan that all existing pavement shall be sawcut to a clean edge where new pavement (for widening or for auxiliary lanes) is to be installed adjacent to existing pavement. Any new pavement placed in the 116th Street and Hoover Road Road rights-of-way for widening, for auxiliary lanes and for each entrance up to the mainline right-of-way limit shall meet the following section: 1.5 inches HMA #11 surface on 2 inches HMA #8 binder on 3 inches HMA #5D base on 7 inches #53 stone on 4 inches #2 stone or match existing, \vhichever is greater. Please delineate this section with hatching on the plans and appropriate reference in the legend. 17. The City typically requires 1" milling \vith 1.5" R.A.C. #11 resurfacing for the entire width of the existing roadway across the property frontage or to the limits of the auxiliary lanes, whichever is greater. The roadway would then also need to be restriped with thermoplastic striping. Please develop a plan for the restriping and for striping of the auxiliary lanes and submit with the Secondary Plat submittal. For the secondary plat when submitted, please add a note to this plan that all striping shall be thermoplastic. Please delineate the milling and resurfacing areas with hatching on the plans and appropriate reference in the legend. 18. Please provide a right-of-way width of 50 feet and a back curb to back curb pavement width of 30 feet for each of the s:ubdivision streets. 19. Please edit or provide a detail which requires the following pavement section for the paving of the proposed interior public streets: 1.5 inches HMA #11 surface on 2 inches HMA #8 binder on 3 inches HMA #5D base on 7 inches #53 stone. Please add a note that all paving must be completed in one paving season. 20. Please indicate a corner cut that will accommodate a 120-foot radius roundabout centered at the intersection of 116th Street and Hoover Road. The Department requires that the Developer dedicate this right-of-way. The Department understands that this dedication will go through the Board of Public Works in the future but needs the right-of-way to be shown on the plans to ensure that the site plan is able to accommodate the future construction. 21. All lots adj acent to side yard easements should be wide enough to accommodate the anticipated house model and any planned driveways such that there is no encroachment in the easements. 22. A three-foot wide #73 stone shoulder at a minimum depth of six inches is required across the property frontage or to the limits of the auxiliary lanes, whichever is greater. Subsurface drain is required beneath the stone shoulder. 23. Please incorporate the Department's cover and backfill standard for all storm sewers and for sanitary and water mains and laterals within the right-of-way into the design for the secondary plat. 24. Please provide detention volume for the fully developed thoroughfare plan right-of-way for 116th Street and Hoover Road frontages. This requirement shall apply regardless of watershed limits. 25. Please and indicate and label a 10-foot wide multi-use path along the 116th Street frontage. 26. The maximum back curb to back curb width of the entrance (including the median) shall be 46 feet. 27. The proposed signage at the entrance cannot be placed in the right-of-way without a consent to encroach. 28. For the three culverts beneath 116th Street (2, 12" CMP's west of the entrance and 33" x 48" CMP east of the entrance), please schedule a meeting with the Department of Engineering to inspect the culverts and determine if they should be replaced as part of this project. 29. Please indicate cleaning o.[the 7'x7'x7' culvert pipe under Hoover Road. 30. Please provide a typical local road cross section that meets all of the Department's standards. Minimum local road pavement section shall be indicated on the cross section. It e percent). Permeability is very slow (< 0.06 in/hr) in the most restrictive layer above 60 inches. Available water capacity is moderate (6.1 inches in the upper 60 inches). The pH of the surface layer in non-limed areas is 5.1 to 6.5. Droughtiness and water erosion are management concerns for crop production. This soil is designated potentially highly erodible (class 2) in the Highly Erodible Land (HEL) classification system. MmC2 Miami silt loam, 6 to 12 percent slopes, eroded This is a moderately well drained soil with a seasonal high water table at 2.0 to 3.5 ft. This soil is located on side slopes on till plains; slopes are 6 to 12 percent. The native vegetation is hardwood forest. The surface layer is silt loam and has moderately low organic matter content (1.0 to 2.0 percent). Permeability is very slow (< 0.06 in/hr) in the most restrictive layer above 60 inches. Available water capacity is moderate (6.1 inches in the upper 60 inches). The pH of the surface layer in non-limed areas is 5.1 to 6.5. Droughtiness and water erosion are management concerns for crop production. This soil is designated potentially highly erodible (class 2) in the Highly Erodible Land (HEL) classification system MoC3 Miami clay loam, 6 to 12 percent slopes, severely eroded This is a moderately well drained soil with a seasonal high water table at 2.0 to 3.5 ft. This soil is located on sideslopes on till plains; slopes are 6 to 12 percent. The native vegetation is hardwood forest. The surface layer is clay loam and has low organic matter content (0.5 to 1.0 percent). Permeability is very slow (< 0.06 in/hr) in the most restrictive layer above 60 inches. Available water capacity is low (4.5 inches in the upper 60 inches). The pH of the surface layer in non-limed areas is 5.1 to 6.5. Droughtiness and water erosion are management concerns for crop production. This soil is designated highly erodible (class 1) in the Highly Erodible Land (HEL) classification system. Sh Shoals silt loam This is a somewhat poorly drained soil with a seasonal high water table at 0.5 to 2.0 ft. This soil is located on flood plains; slopes are 0 to 2 percent. The native vegetation is hardwood forest. The surface layer is silt loam and has moderate organic matter content (2.0 to 4.0 percent). Permeability is moderate (0.6 to 2 in/hr) in the most restrictive layer above 60 inches. Available water capacity is high (11.6 inches in the upper 60 inches). The pH of the surface layer in non- limed areas is 6.0 to 7.3. Wetness and flooding hazard are management concerns for crop production. This soil responds well to tile drainage; it is designated not highly erodible (class 3) in the Highly Erodible Land (HEL) classification system. Because of the flooding hazard, this soil has a severe limitation for most non-ag uses. Additional information about soils is available in the "Soil Survey of Hamilton County". The engineer and/or developer should consider the need for an onsite soils investigation. I have reviewed the plans for this project and have the following comments: · The soils are quite variable on this site. Some (MmB2, MmC2, MoC2) have few limitations for residential development while the Br and Sh have significant limitations. Maintaining the existing drainage way from the back of lot 12, through lots 12, 18 & 19 would eliminate some major issues with these high water table soils. Planning lots in the middle of established drainage ways is not good planning.