Overview
Protocol for erosion and sediment control inspections.
Sections of Lee's Summit's Design and Construction Manual (Ordinance 5813) that pertain to erosion and sediment control include Bill No. 04-142 of the Code of Ordinances of the City of Lee's Summit, Section 22.5-3 and Sections 1010, 2150, and 5100.
Specifications/Contract Documents
City of Lee’s Summit Land Disturbance Permit
Sites with more than 2000 square feet of disturbed ground require a City land disturbance permit. Make application for a City land disturbance permit to Public Works Inspections. Submittals are required with the application.
Submittals required include:
(1.) An erosion and sediment control plan, which must pass City review, and
(2.) A fee (amounts listed below), and
(3.) For sites greater than one acre, a copy of a Missouri Department of Natural Resources (MDNR) land disturbance permit application, or a copy of the MDNR land disturbance permit.
The fee for the City land disturbance permit is based on the size of the land disturbance, in acres: 0-1 acres = $200; >1-3 acres = $400; >3-5 acres = $600; >5-15 acres = $800; >15-25 acres = $1000; >25-50 acres = $1200; >50 acres = $1400.
Single buildings on a single lot with a building permit do not require a city land disturbance permit. A single building, single lot site must still comply with City erosion and sediment control regulations.
Land Disturbance Permit requirements are contained in Design and Construction Manual Section 1010
Submittals
Review Submittals and Certifications – on CIP sites, submittals and certifications are required for erosion and sediment control items. If alternative items are used (a replacement device is chosen) submittals and certifications are required. Study pertinent entries in the Specifications and Contract Documents to determine what Submittals and Certifications are required. On CIP sites, Pay Applications must be submitted. Assure Pay Applications are submitted. Forward Pay Applications to the Construction Project Manager to ensure items can be paid.
For development sites, if an alternative device is used, obtain a certification from the developer, design engineer, or contractor. Verify that the alternative is equal or better than what is in the approved plans.
Field Observations
Erosion and Sediment Control Inspections
Erosion and Sediment Control Inspections entail the following:
Review Contract Documents – prior to inspecting erosion and sediment control on CIP sites, study the specifications and contract documents. Verify quantities to ensure consistency between the plans and bid tabs. Review the Measurement & Payment section of Div. 1, General Requirements to determine how an item is to be paid and what work is included in a pay item. Review the Specifications, Codes and Standards Section of Division 1, General Requirements to determine what specifications govern the work. Review the Technical Specifications, Project Special Provisions, and Addendums to ensure the most current contract requirements are being followed.
For inspections on development sites, study the plans.
Verify proper installation of erosion and sediment control measures and devices – critically inspect performance of erosion and sediment control measures and devices.
Each inspector must conduct frequent and repetitive inspections of erosion and sediment control measures and devices. Inspections must be conducted on construction sites and any other ground within the city where land has been stripped of its vegetation or otherwise had vegetation removed (farm fields and residential gardens excluded).
Documentation
Document inspections in a Field Book. Depending on the project, the City could require a form to be filled out,
? Document erosion and sediment control (ESC) inspections.
? Use a checklist when conducting the inspections.
? Use an electronic database (CityView) to compile and track the inspections.
? Pursue compliance through enforcement action when ESC is lacking.
Nonpoint source pollution - sediment carried by stormwater from development sites and construction sites is nonpoint source pollution. Nonpoint source pollution, unlike pollution from industrial and sewage treatment plants, comes from diffuse sources, such as development sites and construction sites. Nonpoint source pollution is caused by stormwater running over the ground. Stormwater runoff picks-up and carries away sediment, depositing the sediment in reservoirs and streams. Where ESC measures are lacking, sediment will leave a site via stormwater runoff and pollute downstream surface waters.
Conduct ESC inspections on each site at least once a week. Conduct extra inspections after runoff producing rain events. A proper inspection entails seeing effective ESC measures in place in sufficient quantity. A passing inspection will reveal ESC measures sufficient to prevent sediment from leaving a site.
Refer to Sections 2150 and 5100 of Lee’s Summit’s Design and Construction Manual and other guidance documents listed on the last page of this document to find details on effective ESC devices and systems.
The most effective ESC measures prevent erosion. Measures that prevent erosion include vegetation, mulch cover, and compost cover. Ubiquitous vegetation, mulch, or compost cover on a construction site will reduce erosion.
Erosion control blanket and other rolled erosion control products (RECP) are very effective at reducing erosion.
Another method of reducing erosion is the practice of surface roughening.
Where measures that significantly reduce or prevent erosion aren’t in use, stormwater runoff must be impounded (detained) with sediment basins, sediment traps, or mulch berms. Sediment basin(s) or sediment traps built to appropriate design standards and large enough to control runoff from a site would comprise the core of a functional ESC system.
Information on ESC measures and devices can be found in Lee’s Summit’s Design and Construction Manual Sections 2150 and 5100. Bill No. 04-142 of Chapter 22.5 of the Code of Ordinances of the City of Lee's Summit, Section 22.5-3, and Design and Construction Manual Sections 1010, 2150, 5100 contain language to be used by City Inspectors to enforce ESC requirements in Lee’s Summit.
Note: On capital improvement projects and private development sites, a Stormwater Pollution Prevention Plan (SWPPP), which is a living document that is built upon an ESC plan, must be produced by the owner (typically the City on CIP sites). The SWPPP is a State and Federal requirement. The SWPPP must be actively and continually followed by the owner and the owner’s contractors.
Education is a requirement - education in ESC methods and systems.
A checklist for inspections is required - a checklist to document ESC inspections.
A database is required for inspections - an electronic database to document ESC inspections.
Compliance is required on all sites. Where ESC is lacking, enforcement action is required to deter infractions. If verbal reminders or warnings do not lead to compliance, write a letter to the responsible party. Sanctions are listed in Bill No. 04-142 of Chapter 22.5 of the Code of Ordinances of the City of Lee's Summit, Section 22.5-3. Examples of written correspondence can be found at P:\ENGINEERING DIVISION\Construction Mgmt., Inspections\ESC
Guidebooks
In addition to Lee’s Summit’s Design and Construction Manual, the following documents contain valuable information on erosion and sediment control devices and systems.
EPA’s Stormwater Web Site
http://www.epa.gov/npdes/stormwater
National Menu of Best Management Practices for Stormwater Phase II
http://cfpub.epa.gov/npdes/stormwater/menuofbmps
Construction Industry Compliance Assistance Center
http://www.cicacenter.org/
Stormwater Management Manual for Western Washington, Volume II – Construction Stormwater Pollution Prevention, www.ecy.wa.gov/pubs/9912.pdf
Maryland Standards and Specifications for Soil Erosion and Sediment Control
www.mde.state.md.us/Programs/WaterPrograms/SedimentandStormwater/erosionsedimentcontrol/standards.asp
Virginia Erosion and Sediment Control Handbook
http://www.dcr.virginia.gov/soil_and_water/e&s-ftp.shtml
Protecting Water Quality, prepared by the St. Charles Soil and Water Conservation District, St. Charles, Missouri and the Missouri Department of Natural Resources.