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7103-01 5713 BSD-Temporary Erosion and Sediment Control-Addendum 317190 / American Legion Senior Center 01 5713 - 1 TEMPORARY EROSION AND SEDIMENT CONTROL SECTION 01 5713 TEMPORARY EROSION AND SEDIMENT CONTROL PART 1 GENERAL 1.01 SECTION INCLUDES A.Prevention of erosion due to construction activities. B.Prevention of sedimentation of waterways, open drainage ways, and storm and sanitary sewers due to construction activities. C.Restoration of areas eroded due to insufficient preventive measures. D.Compensation of Owner for fines levied by authorities having jurisdiction due to non-compliance by Contractor. 1.02 RELATED REQUIREMENTS A.Section 31 1000 - Site Clearing: Limits on clearing; disposition of vegetative clearing debris. B.Section 31 2200 - Grading: Temporary and permanent grade changes for erosion control. C.Section 32 9219 - Seeding: Permanent turf for erosion control. D.Section 32 9223 - Sodding: Permanent turf for erosion control. 1.03 REFERENCE STANDARDS A.ASTM D4491 - Standard Test Methods for Water Permeability of Geotextiles by Permittivity; 1999a (Reapproved 2014). B.ASTM D4533/D4533M - Standard Test Method for Trapezoid Tearing Strength of Geotextiles; 2015. C.ASTM D4751 - Standard Test Method for Determining Apparent Opening Size of a Geotextile; 2016. D.North Central Texas Council of Governments Standard Specifications for Public Works Construction, Fifth Edition. Published November 2017. 1.04 PERFORMANCE REQUIREMENTS A.Comply with all requirements of NCT-COG Standard Specifications for Public Works Construction, Section 202. for erosion and sedimentation control. B.The Contractor is responsibile for filing any "Stormwater Pollution Prevention Plan" (SWP3), "Notice of Intent" (NOI) and/or Notice of Termination (NOT) that are required by the City of Denton and TCEQ. 1.SW3P and NOI shall comply with the City of Denton Watershed Protection requirements, TCEQ requirements, and EPA regulations, and shall pay the filing fees associated with the regulations. Fees associated with these regulations are subsidiary to the overall contract. 2.NOI must be postmarked two days before construction begins. 3.It is the contractor's responsibility to file and provide the owner a copy of the NOT at the completion of the project. C.Do not begin clearing, grading, or other work involving disturbance of ground surface cover until applicable permits have been obtained; furnish all documentation required to obtain applicable permits. D.Timing: Put preventive measures in place as soon as possible after disturbance of surface cover and before precipitation occurs. E.Storm Water Runoff: Control increased storm water runoff due to disturbance of surface cover due to construction activities for this project. 1.Prevent runoff into storm and sanitary sewer systems, including open drainage channels, in excess of actual capacity or amount allowed by authorities having jurisdiction, whichever is less. 2.Anticipate runoff volume due to the most extreme short term and 24-hour rainfall events that might occur in 25 years. 17190 / American Legion Senior Center 01 5713 - 2 TEMPORARY EROSION AND SEDIMENT CONTROL F.Erosion On Site: Minimize wind, water, and vehicular erosion of soil on project site due to construction activities for this project. 1.Control movement of sediment and soil from temporary stockpiles of soil. 2.Prevent development of ruts due to equipment and vehicular traffic. 3.If erosion occurs due to non-compliance with these requirements, restore eroded areas at no cost to Owner. G.Erosion Off Site: Prevent erosion of soil and deposition of sediment on other properties caused by water leaving the project site due to construction activities for this project. 1.Prevent windblown soil from leaving the project site. 2.Prevent tracking of mud onto public roads outside site. 3.Prevent mud and sediment from flowing onto sidewalks and pavements. 4.If erosion occurs due to non-compliance with these requirements, restore eroded areas at no cost to Owner. H.Sedimentation of Waterways On Site: Prevent sedimentation of waterways on the project site, including rivers, streams, lakes, ponds, open drainage ways, storm sewers, and sanitary sewers. 1.If sedimentation occurs, install or correct preventive measures immediately at no cost to Owner; remove deposited sediments; comply with requirements of authorities having jurisdiction. 2.If sediment basins are used as temporary preventive measures, pump dry and remove deposited sediment after each storm. I.Sedimentation of Waterways Off Site: Prevent sedimentation of waterways off the project site, including rivers, streams, lakes, ponds, open drainage ways, storm sewers, and sanitary sewers. 1.If sedimentation occurs, install or correct preventive measures immediately at no cost to Owner; remove deposited sediments; comply with requirements of authorities having jurisdiction. J.Open Water: Prevent standing water that could become stagnant. K.Maintenance: Maintain temporary preventive measures until permanent measures have been established. 1.05 SUBMITTALS A.See Section 01 3000 - Administrative Requirements, for submittal procedures. B.Provide Owner and Engineer with copies of SW3P, NOI, and NOT as described above. C.Inspection Reports: Submit report of each inspection; identify each preventive measure, indicate condition, and specify maintenance or repair required and accomplished. PART 2 PRODUCTS 2.01 MATERIALS A.Provide materials that comply with NCT-COG Standard Specifications for Public Works Construction, sections 202.5-18. PART 3 EXECUTION 3.01 EXAMINATION A.Examine site and identify existing features that contribute to erosion resistance; maintain such existing features to greatest extent possible. 3.02 PREPARATION A.Schedule work so that soil surfaces are left exposed for the minimum amount of time. 3.03 INSTALLATION A.Install products in accordance with NCT-COG Standard Specifications for Public Works Construction, sections 202.5-18. 17190 / American Legion Senior Center 01 5713 - 3 TEMPORARY EROSION AND SEDIMENT CONTROL 3.04 MAINTENANCE A.Inspect preventive measures at least once every 14 days, within 24 hours after the end of any storm that produces 0.5 inches or more rainfall at the project site, and daily during prolonged rainfall. B.Repair deficiencies immediately. C.Clean out temporary sediment control structures when the accumulated silt depth reaches six (6) inches and relocate soil on site. 3.05 CLEAN UP A.Remove temporary measures after permanent measures have been installed, unless permitted to remain by Architect. B.Clean out temporary sediment control structures that are to remain as permanent measures. C.Where removal of temporary measures would leave exposed soil, shape surface to an acceptable grade and finish to match adjacent ground surfaces. END OF SECTION 01 5713