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HomeMy WebLinkAboutSDP202200052 Review Comments Initial Site Plan 2022-09-06 (2)Rivanna Water & Sewer Authority (RWSA) General Water & Sanitary Sewer Notes Last Revised: April 2016 1. All materials and methods of construction shall comply with the latest version of the General Water and Sewer Design and Construction Standards — Version 1.0, adopted in December 2015, except as modified below or modified in special notes. 2. RWSA shall approve all construction materials and methods of construction. A preconstruction conference shall be held with RWSA prior to the start of any work. 3. The contractor shall be responsible for notifying Miss Utility (1-800-552-7001). 4. RWSA Engineer (Victoria Fort at (434) 977-2970 ext. 205) shall be notified three business days prior to the start of construction. 5. All work is subject to inspection by RWSA staff. No tie-ins to the existing system shall be made without coordination with and the presence of RWSA staff. No work shall be conducted on RWSA facilities on weekends or holidays without special written permission from RWSA. 6. For sanitary sewer line construction: RWSA may require bypass pumping for tie-ins to the existing system. All doghouse manholes must be pressure -tested before a connection is made to the system. 7. The location of existing utilities as shown on the plans is from data available at the time of design and is not necessarily complete or accurate. The Contractor shall be responsible for the verification of the location, size and depth of all existing utilities, both surface and subsurface. The Contractor shall immediately notify the Engineer of any discrepancies between the plans and field conditions. The Contractor shall use due diligence to protect all utilities and structures from damage at all times, whether shown on the plans or not. Damage to any existing utilities shall be repaired by the Contractor to the original condition at no additional cost to the Owner. 8. Erosion and sediment control facilities shall not be permitted in the RWSA easement without special written permission from RWSA. No grading shall be permitted in the RWSA easement unless permitted otherwise by RWSA in writing. 9. No blasting shall be permitted within 100 feet of RWSA facilities without written permission and RWSA approval of the blasting plan. Ground monitoring during blasting and a pre -blast survey may be required. For blasting within 100 feet of any operative RWSA sewerlines, bypass pumping and/or pre- and post -CCTV may be required. RWSA may also require certification from a licensed professional engineer stating that the proposed blasting will not damage any RWSA facilities. Damage to any utilities due to blasting shall be repaired by the Contractor to the original condition at no additional cost to the Owner. 10. The contractor shall observe minimum separation requirements for utility crossings. When a crossing is made under an existing facility, adequate structural support shall be provided for the existing pipe. The area of the crossing shall be backfilled with compacted 57 stone to the springline of the existing pipe. 11. New water main installations shall be pressure tested, chlorinated, flushed and have water samples approved prior to making any permanent connection to the public water system. Approved methods of filling and flushing new water mains will be required to prevent any contamination of the public water system. 12. All easements for new RWSA facilities shall be recorded prior to placing the new facilities into service. 13. No permanent structural facilities will be permitted in the RWSA easement. This includes building overhangs, retaining walls, footers for any structure, drainage structures, etc. 14. Trees are not permitted in the RWSA easement. 434..RVA"NA •r•r 434.293.8858 ld ww.rivanna.orgWARTER&SEWER AT RR RWSA Acceptable Plantings for Water and Sewer Easements Acceptable Groundcover Options for Inner 20 Feet Where property owners are immediately adjacent to the inner 20 feet of an easement (closest to the line), acceptable alternatives to periodic mowing include the maintenance of turf or lawn, the establishment of native grasses, or the establishment of low -growing shallow rooted groundcovers that provide equal or better visibility and accessibility to the line as periodic mowing. While RWSA will voluntarily exercise reasonable care when performing inspection, operation, or maintenance activities in the areas of the alternative plantings, RWSA cannot guarantee that damage will not occur and cannot commit to replacing damaged vegetation. The following is the approved list of groundcovers permitted within RWSA easements: Festuca orundinacea Tall Fescue Poo pratensis Kentucky Bluegrass Loliumperenne Perennial Ryegrass Achillea millefolium Common Yarrow Andropogon virginicus Broom Sedge Asclepias tuberose Butterfly Milkweed Acceptable Shrubs and Trees for Outer 20 Feet Elymus virginicus Lolium multiflorum Panicum dichotomiflorum Panicum virgatum Sorghastrum nutans Rudbeckia hirta Virginia Wild Rye Annual Rye Smooth Panic Grass Switch Grass Indian Grass Black -Eyed Susan Where easement widths exceed a total of 20 feet, RWSA may allow the installation of appropriate shrub and tree species a minimum of 10 feet from the water or sewer line. While there are no shrubs and trees that are completely safe to grow over a utility line, appropriate species offer the utility line less risk of intrusion from roots because they are smaller in size, shallow -rooted, slower growing, and drought resistant. Alternative plantings must be approved by RWSA priorto installation, and while RWSA will voluntarily exercise reasonable care when performing inspection, operation, or maintenance activities in the areas of the alternative plantings, RWSA cannot guarantee that damage will not occur and cannot commit to replacing damaged vegetation. Because of the risk of damage, plantings should be inexpensive and expendable. The following is the approved list of shrubs and trees permitted with RWSA easements: Shrubs Kalmialatifolia Mountain Laurel Cephalanthus occidentalis Buttonbush Corpus amomum Silky Dogwood llexverticillato Winterberry Lindera benzoin Northern Spicebush Rhododendron catawbiense Rosebay Rhododendron Viburnum dentatum Southern Arrowwood Trees Alnusserrulata Tag Alder Amelanchierarborea Serviceberry Asimina triloba Pawpaw Carpinuscaroliniana American Hornbeam Cercis Canadensis Eastern Redbud Chionanthus virginicus White Fringetree Corpus florida Flowering Dogwood Hamamelis virginiana American Witchhazel llexopaca American Holly Juniperus virginiana Eastern Redcedar Magnolia tripetala Umbrella Magnolia Magnolia virginiana Sweetbay Magnolia Prunus virginiana Chokecherry