2325 75TH ST SE 2021-12-27 - Laserfiche WebLink

Inspection and Monitoring: Site inspections shall be done by `a. person who is knowledgeable in the principles and practices of erosion and sediment control. The person must have skills to first assess the site :conditions„and-construction .activities that could impact the quality of stormwater, and second assess the effectiveness of erosion and sediment control measures Used to control the quality of stormwater. . discharges. Whenever inspection and/or monitoring reveals that the BMPs identified in the Construction SWPPP are inadequate, due to the isc 'e of or ot-ential to dig9charge a significant amount of any ollutant appropriate BMPs or design changes shall be implemented as soon as possible. Maintaining an Updated Construction SWPPP The construction'SWPPP shall be retained on -site or within reasonable access to the site. The SWPPP shall be modified whenever there is a change in the design, construction, operation, or maintenance at the construction site that has, or could have, a significant effect on the discharge of pollutants to waters of the state. The SWPPP. shall be modified if, during inspections or investigations conducted by the owner/operator, or the applicable local or state regulatory authority, it is determined that the SWPPP is ineffective in eliminating or significantly minimizing pollutants in stormwater discharges from the site. The SWPPP shall be modified as necessary to include additional or modified BMPs designed to correct problems identified. Revisions to the SWPPP shall be completed within seven days following inspection. 13:- Protect On -Site Stormwater Management BMPs for Runoff from Hard Surfaces The use of on -site management BMP's.fof this project'will allow for'the`installation of the infiltration trenches at the end of the project during final 'stabilization. That will protect those areas from disturbance or compaction. In addition, the organic content of the amended soils will be tested and verified prior,to:.final project' acceptance. 5. SOURCE CONTROL This project proposes to construct a SFR and driveway. Per Volume 4 of the 2019 DOE SWMMWW, residential development does not require source control 6. PRESERVATION OF NATURAL DRAINAGE SYSTEM -The runofflrom the 'site improvements' will "'either' be dispersed on site or infiltrated via infiltration trenches. However, by not grading or compacting the majority of the pervious surfaces to remain after construction in the area of disturbance a maximum amount of site runoff from the developed project will be absorbed and infiltrated into the existing on -site soils. This will mimic the existing conditions by maintaining the existing direction and condition of flow from this site. Haack 75th SFR 20-0817 September 2020 Revised November2020 Page 8