R2017-53 Contract with Entler Excavating for Nelson Park Neighborhood Combined Sewer Project CP 2012-22

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' P. The following pollutants of concern will be associated with this construction project: ® Soil Sediment ® Petroleum (gas, diesel, oil, kerosene, hydraulic oil/fluids) ' ® Concrete ® Antifreeze/Coolants ® Concrete Truck Waste ® Waste water from cleaning construction equipment ® Concrete Curing Compounds ❑ Other(specify) ® Solid Waste Debris ❑ Other(specify) ' ❑ Paints ❑ Other(specify) ❑ Solvents ❑ Other(specify) ® Fertilizers/Pesticides ❑ Other(specify) II. Controls: This section of the plan addresses the controls that will be implemented for each of the major construction activities described in I.C. above and for all use areas, borrow sites, and waste sites. For each measure discussed, the Contractor will be responsible for its implementation as indicated. The Contractor shall provide to the Resident Engineer a plan for the implementation of the measures indicated. The Contractor, and subcontractors, will notify the Resident Engineer of ' any proposed changes, maintenance, or modifications to keep construction activities compliant with the Permit ILR10. Each such Contractor has signed the required certification on forms which are attached to, and are a part of, this plan: A. Erosion and Sediment Controls:At a minimum, controls must be coordinated, installed and maintained to: ' 1. Minimize the amount of soil exposed during construction activity; 2. Minimize the disturbance of steep slopes; 3. Maintain natural buffers around surface waters, direct storm water to vegetated areas to increase sediment ' removal and maximize storm water infiltration, unless infeasible; 4. Minimize soil compaction and, unless infeasible, preserve topsoil. ' B. Stabilization Practices: Provided below is a description of interim and permanent stabilization practices, including site-specific scheduling of the implementation of the practices. Site plans will ensure that existing vegetation is preserved where attainable and disturbed portions of the site will be stabilized. Stabilization practices may include but are not limited to: temporary seeding, permanent seeding, mulching, geotextiles, sodding,vegetative buffer ' strips, protection of trees, preservation of mature vegetation, and other appropriate measures. Except as provided below in II(B)(1)and Il(B)(2), stabilization measures shall be initiated immediately where construction activities have temporarily or permanently ceased, but in no case more than one(1)day after the construction activity in that portion of the site has temporarily or permanently ceases on all disturbed portions of the site where construction will not occur for a period of fourteen (14)or more calendar days. 1. Where the initiation of stabilization measures is precluded by snow cover, stabilization measures shall be initiated as soon as practicable. I2. On areas where construction activity has temporarily ceased and will resume after fourteen (14) days, a temporary stabilization method can be used. The following stabilization practices will be used for this project: ® Preservation of Mature Vegetation ® Erosion Control Blanket/Mulching ❑ Vegetated Buffer Strips ® Sodding ® Protection of Trees ❑ Geotextiles ® Temporary Erosion Control Seeding ❑ Other(specify) ❑ Temporary Turf(Seeding, Class 7) ❑ Other(specify) ® Temporary Mulching ❑ Other(specify) ® Permanent Seeding ❑ Other(specify) 1 Page 3