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Section 7 CONSTRUCTION SWPPP MAPLE ST <br /> The storm water pollution prevention plan (SWPPP) is designed to reduce the discharge of sediment-laden runoff <br /> from the site. The plan is comprised of temporary measures(rock entrance,filter fence,straw mulch,etc.)as well <br /> as permanent measures(hydroseeding and landscaping). <br /> The following standards will be met by applying BMPs to prevent erosion and trap sediments within the project <br /> site and are shown on the SWPPP drawing: <br /> 1. Mark clearing limits - Prior to any site clearing or grading, the clearing limits are to be <br /> marked in the field. <br /> 2. Establish construction access-A stabilized construction entrance shall be installed as the <br /> first step in clearing and grading. <br /> 3. Control flow rates-Discharge rates of stormwater from the site will be controlled where <br /> increases in impervious area or soil compaction during construction could lead to <br /> downstream erosion, or where necessary to meet local agency stormwater discharge <br /> requirements. <br /> 4. Install sediment controls- Perimeter protection to filter sediment from sheetwash shall <br /> be located downslope of all disturbed areas and shall be installed prior to upslope grading. <br /> The silt fence will be installed along the boundary of the site to retain all sediment on site. <br /> 5. Stabilize soils-Temporary and permanent cover measures shall be provided to protect <br /> all disturbed areas. Cover measures include the use of surface roughening,mulch,erosion <br /> control nets and blankets, plastic covering, seeding,and sodding. <br /> 6. Protect slopes — Cut and fill slopes within the site will be designed, constructed, and <br /> protected in a manner than minimizes erosion. <br /> 7. Protect drain inlets - Storm drain inlet protection measures will be applied to all catch <br /> basins within the project vicinity. <br /> 8. Stabilize channels and outlets - Where site runoff is to be conveyed in channels, or <br /> discharged to a stream or some other natural drainage point, efforts will be taken to <br /> prevent downstream erosion. <br /> 9. Control pollutants - Pollutants shall be controlled per TESC notes shown on SWPPP <br /> drawing. <br /> 10. Control dewatering - Any runoff generated by dewatering shall be treated by releasing <br /> the water to a well vegetated, gently sloping area, temporary settling tank or approved <br /> outfall. <br /> 11. Maintain BMPs-All temporary and permanent Erosion and Sediment Control(ESC)BM Ps <br /> shall be maintained and repaired as needed to ensure continued performance of their <br /> intended function. Prior to final construction approval,the project site shall be stabilized <br /> to prevent sediment-laden water from leaving the site after project completion. All <br /> disturbed areas shall be vegetated or otherwise permanently stabilized. See sheet TD-01 <br /> of LSM plans for more detail. <br /> 12. Manage the project-The project will be managed to minimize the amount of sediment <br /> exposure during the wet season and inspected/monitored as necessary. As site work <br /> progresses, ESC BMPs will be implemented to address changing site conditions and <br /> minimize the amount of sediment laden runoff from leaving the site. <br /> JOB#19-336 <br /> IJ Storm Drainage Report 7.1 <br />