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HomeMy WebLinkAboutSWPPP Const Review 8-9-12 Carmel Stormwater Pollution Prevention Plan Review Olive Garden Project Name: 8/9/2012 Review Date: John Thomas Reviewed By: Construction SWPPP SatisfactoryUnsatisfactory 1)14 Digit Watershed Hydrologic Unit CodeX 2)Name of All Receiving WatersX If the discharge is to a municipal separate storm sewer, identify the ultimate receiving water 3)Estimate of peak discharge for post construction conditions (10-X year) 4)Locations of specific points where stormwater discharge will X leave the site. 5)Locations where stormwater may be directly discharged into X groundwater, such as abandoned wells or sinkholes 6)Soils map of the predominant soil types including:X a. X Soil legend with descriptions of each soil type b. X Brief description of how the site has accommodated the existing soil limitations 7)Description of potential pollutant sources associated with the X construction activities 8)Temporary and permanent stormwater quality measures:X a. X Location b. X Dimensions c. X Detailed Specifications d. X Construction Details e. X Monitoring and Maintenance Guidelines 9)General construction sequence Each plan should contain multiple stormwater pollution prevention measures. All measures will not be installed at the same time. Various measures will be installed at different times throughout the construction process. Some will be installed prior to land disturbance, and others may not be installed until work at the site progresses to an area where they are necessary. Each proposed measure should be identified in the sequence as to when it is to be installed in relation to the land disturbing activities. 10)Location of proposed soil stockpiles, borrow, and/or disposal X areas These areas shall be included as part of the plans whether they occur on or off site. 11)Temporary and Permanent surface stabilization methods X appropriate for each season Provide application rates for soil amendments and seed mixtures, as well as, the type and application rate for mulch. 12)Erosion and sediment control specifications for individual X building lots 13)Material handling, storage, and spill prevention planX a. X List of expected materials that may be present on the site during construction operations b. X Written description of how these materials will be handled to minimize the potential of entering the storm sewer system c. X Procedures for the contractor to take if any spills occur during construction. 14)Contact information for the trained individual responsible for X stormwater pollution prevention for the project site a. X Name b. X Address c. X Telephone Number d. X Email Address e. X List of qualifications 15)Current revision date on all sheetsX Comments Please place all storm drains and SSDs in bold on C2.2 1) Does this drain to Payne Branch or Crooked Creek? Please check and revise if necessary. 2) Please provide a soil map for the site. 6) Iowa regulations are cited. Please revise. 7) 8) a.How will the site be accessed until Retail Parkway is completed? Will an additional construction entrance be needed off of Michigan Rd until it is installed? Please close gap in silt fence on SE corner of site on C2.2. The "Do Not Mow or Spray" sign locations are hard to determine on C2.3 where it meets the vegetated swale symbol. Please clarify. There are also handicapped signs with the same symbol near Vegetated Swale 8. Please remove these from C2.3. d.Geo-technical report indicates water was found 3.5' below proposed building pad. Please include a dewatering control detail in case excavations need to be dewatered. Vegetated Swale SSDs need to be encased in washed #8 stone with filter fabric on bottom and sides of the #8s. A 4" layer of washed pea gravel should be placed on top of the #8 stone with the filter fabric extending up along the sides of this layer as well. Is the SSD riser detail on C6.2 going to be used on site? If not, please remove. Filter Fabric should be used underneath the rip rap on the curb turnouts. Please update detail. Please provide a temporary seeding and mulch detail/notes on C2.2 in case there is a gap in time 11) where the site remains undisturbed for more than 14 days. Please provide planting plan for the vegetated swales on the SWPPP. Erosion control blanket should be used throughout bottom of the vegetated swales to stabilize them unless it conflicts with the planting plan. 13) c.Iowa is listed as the reporting authority for spills in Section 12.2 of the Spill Prevention Section. Please update with Indiana Department of Environmental Management Spill Response Line and with 911.