Division 8 Miscellaneous Construction

1 2018 Standard Specifications M 41-10 Page 8-1 Division 8 Miscellaneous Construction8-01 erosion control and Water Pollution DescriptionThis Work consists of furnishing, installing, maintaining, removing and disposing of high visibility fence, and water pollution and erosion control items in accordance with these Specifications and as shown in the Plans or as designated by the MaterialsMaterials shall meet the requirements of the following sections: Corrugated Polyethylene Drain Pipe (6) Quarry Spalls 9-13 Seed Fertilizer Mulch and Amendments Tackifiers (7) erosion control Devices High Visibility Fence Construction Geotextile 9-33 For all seed the Contractor shall furnish the Engineer with the following documentation:1.

2 The state or provincial seed dealer license and Copies of washington State department of Agriculture (WSDA) test results on each lot of seed. Test results must be within six months prior to the date of concrete, in any form, shall not be used for any Work defined in Section Construction (1) GeneralThe Contractor shall install a high visibility fence along the site preservation lines shown in the Plans or as instructed by the the life of the project, the Contractor shall preserve and protect the delineated area, acting immediately to repair or restore any fencing damaged or pollution, erosion , runoff, and related damage requires the Contractor to perform temporary Work items including but not limited to:1.

3 Providing ditches, berms, culverts, and other measures to control surface Building dams, settling basins, energy dissipaters, and other measures, to control downstream Controlling underground water found during Covering or otherwise protecting slopes until permanent erosion - control measures are the degree possible, the Contractor shall coordinate this temporary Work with permanent drainage and erosion control Work the Contract Engineer may require additional temporary control measures if it appears pollution or erosion may result from weather, the nature of the materials, or progress on the natural elements rut or erode the slope, the Contractor shall restore and repair the damage with the eroded material where possible, and remove and dispose of any remaining material found in ditches and culverts.

4 When the Engineer orders replacement with additional or other materials, unit Contract prices will cover the quantities 8-2 2018 Standard Specifications M 41-108-01 erosion control and Water Pollution ControlAll sediment control devices including, but not limited to, sediment ponds, silt fencing, or other sediment trapping BMPs shall be installed prior to any ground disturbing activity. Clearing, grubbing, excavation, borrow, or fill within the Right of Way shall never expose more erodible earth than as listed below, without written approval by the Engineer.

5 Western washington (West of the Cascade Mountain Crest)Eastern washington (East of the Cascade Mountain Crest)May 1 through September 3017 AcresApril 1 through October 3117 AcresOctober 1 through April 305 AcresNovember 1 through March 315 AcresThe Engineer may increase or decrease the limits based on project earth is defined as any surface where soils, grindings, or other materials may be capable of being displaced and transported by rain, wind, or surface water earth not being worked, whether at final grade or not, shall be covered within the specified time period (see the table below)

6 , using an approved soil covering washington (West of the Cascade Mountain Crest)Eastern washington (East of the Cascade Mountain Crest)October 1 through April 302 days maximumOctober 1 through June 305 days maximumMay 1 to September 307 days maximumJuly 1 through September 3010 days maximumIf the Engineer, under Section , orders the Work suspended, the Contractor shall continue to control erosion , pollution, and runoff during the in this section shall relieve the Contractor from complying with other Contract (1)A SubmittalsWhen a temporary erosion and sediment control (TESC)

7 Plan is included in the Plans, the Contractor shall either adopt or modify the TESC Plan. The Contractor shall provide a schedule for TESC Plan implementation and incorporate it into the Contractor s progress Contractor s adoption of the TESC Plan as shown in the Plans shall be submitted as a Type 1 Working Drawing. Modified TESC Plans shall be submitted as Type 2 Working Drawings, conforming to all requirements of the current edition of the WSDOT Temporary erosion and sediment control Manual M 3109. The TESC Plan shall cover all areas that may be affected inside and outside the limits of the project (including all Contracting Agency-provided sources, disposal sites, and haul roads, and all nearby land, streams, and other bodies of water).

8 Failure to accept all or part of any such Plan will not make the Contracting Agency liable to the Contractor for any Work (1)B erosion and sediment control (ESC) LeadThe Contractor shall identify the ESC Lead at the preconstruction discussions and in the TESC Plan. The ESC Lead shall have, for the life of the Contract, a current Certificate of Training in Construction Site erosion and sediment control from a course approved by the washington State department of Ecology. The ESC Lead shall be listed on the Emergency Contact List required under Section (1).

9 The ESC Lead shall implement the TESC Plan. Implementation shall include, but is not limited to:1. Installing and maintaining all temporary erosion and sediment control Best Management Practices (BMPs) included in the TESC Plan to assure continued performance of their intended function. Damaged or inadequate TESC BMP s shall be corrected Updating the TESC Plan to reflect current field Standard Specifications M 41-10 Page 8-3 erosion control and Water Pollution control 8-01 When a TESC Plan is included in the Contract Plans, the ESC Lead shall also inspect all areas disturbed by Construction activities, all on-site erosion and sediment control BMP s.

10 And all stormwater discharge points every calendar week and within 24 hours of runoff events in which stormwater discharges from the site or as directed by the Engineer. Inspections of temporarily stabilized, inactive sites may be reduced to once every calendar month. The erosion and sediment control Inspection Form (WSDOT Form 220-030) shall be completed for each inspection and a copy shall be submitted to the Engineer no later than the end of the next working day following the (1)C Water ManagementUnless site water is to be managed in accordance with the conditions of a waste discharge permit from a local permitting authority, site water shall be managed as (1)