104PREVENTION, CONTROL, AND ABATEMENT OF EROSION AND WATER POLLUTION

104-1 Description.

Provide erosion control measures where work is accomplished in conjunction with the project, to prevent erosion, pollution of water, detrimental effects to public or private property adjacent to the project right -of-way and damage to work on the project.

104-2 General.

Coordinate the installation of temporary erosion control devices with the construction of the permanent erosion control devices to ensure economical, effective, and continuous control of erosion and water pollution throughout the life of th e Contract.

104-3 Control of Contractor’s Operations Which May Result in Water Pollution.

Prevent contaminants, pollutants or hazardous substances, as defined in Section 376.301, Florida Statutes, from migrating from the construction site or from material s and equipment into any surface waters, wetlands, groundwater or property beyond the project limits. Conduct and schedule operations to avoid and minimize pollution or siltation from the project to surface waters, wetlands, groundwater, or property beyond the project limits. Do not drive in, operate, or place construction equipment or materials in surface waters, wetlands, groundwater, or property beyond the project limits without permitted authority for permanent or temporary impacts. Water crossings or other wetlands impacts must be authorized by permit. Obstructing or impeding the water flow or movement of the water or wildlife must be authorized by permit. Where pumps are used to remove highly turbid waters from enclosed construction areas such as cof ferdams or forms, treat the water by one or more of the following methods prior to discharge from the project: pumping into grassed swales or appropriate upland vegetated areas or constructed sediment basins, or confined by an appropriate enclosure such as turbidity barriers when other methods are not practical. Do not discharge, water that does not meet State water quality standards or does not meet the criteria specified in any applicable permit. Remove sediment accumulated during construction from all e xisting or newly constructed stormwater facilities prior to final acceptance. Ensure that all stormwater conveyances and stormwater facilities meet final grade requirements at final acceptance. Remove silt or regrade as necessary to comply with the lines a nd grades shown in the Plans. Do not enter onto lands or waters outside the limits of construction as staked, except as authorized by the Engineer. Do not allow water that does not meet state water quality standards or does not meet the permitted criteria to exit the project limits. Obtain the Engineer’s approval for the location and method of operation in borrow pits, material pits, and disposal areas furnished for waste material from the project (other than commercially operated sources) such that erosi on during and after completion of the work will not result in detrimental siltation or water pollution.

104-4 Materials for Temporary Erosion Control.

For materials that are part of the permanent work, meet the testing requirements of the applicable perma nent materials. FY 2023-24 Return to Table of Contents For materials not part of the permanent work, no testing is required; acceptance will be based on visual inspection Use new or used materials for the construction of temporary silt fence, staked turbidity barriers, and floating turbidit y barrier not to be incorporated into the completed project For geotextile fabrics, use a product on the Approved Product List (APL) meeting the requirements of Section 985.

104-5 Preconstruction Requirements.

Prior to the Preconstruction Conference, sub mit an Erosion and Sediment Control Plan meeting the requirements or special conditions of all permits authorizing project construction. If no permits are required or the approved permits do not contain special conditions or specifically address erosion an d water pollution, the project’s Erosion and Sediment Control Plan will be governed by 7 -1.1, 7-2.2, 7-8.1, 7-8.2, and Section 104. When a DEP Generic Permit for Stormwater Discharge from Large and Small Construction Activities permit is issued, the Contr actor’s Erosion and Sediment Control Plan shall be prepared to accompany the Department’s Stormwater Pollution Prevention Plan. Ensure the Erosion and Sediment Control Plan includes procedures to control off -site tracking of soil by vehicles and constructi on equipment and a procedure for cleanup and reporting of non -storm water discharges, such as contaminated groundwater or accidental spills. Do not begin any soil disturbing activities before receiving the Engineer’s written approval of the Erosion and Sediment Control Plan, including the required signed certification statements. Failure to sign and submit any required documents or certification statements will be considered a default of the Contract. Any soil disturbing activities performed without the required signed documents or certification statements is considered a violation of the DEP Generic Permit for Stormwater Discharge from Large and Small Construction Activities . Prepare a site -specific Erosion and Sediment Control Plan in accordance with th e planned sequence of operations and present it in a format acceptable to the Department. The Erosion and Sediment Control Plan shall describe, but not be limited to, the following items or activities:

104-6 Construction Requirements.

104-6.1 Limitation of Exposure of Erodible Earth: Do not allow the surface area of

erodible earth that clearing and grubbing operations, excavation and filling operations, or other earth disturbing activities to exc eed 750,000 square feet without specific prior written approval by the Engineer. This limitation applies separately to clearing and grubbing operations and excavation and filling operations. The Engineer may further limit the surface areas of unprotecte d erodible earth exposed by the construction operation and may direct the Contractor to provide additional erosion or pollution control measures to prevent contamination of any surface waters, wetlands, or groundwater or to prevent detrimental effects on p roperty outside the project limits or damage to the project.

104-6.2 Incorporation of Erosion and Sediment Control Devices: Incorporate

permanent erosion and sediment control devices into the project at the earliest practical time. Complete the installati on of temporary erosion and sediment control devices prior to the commencement of any earthwork. Use temporary erosion and sediment control devices found in the State of Florida Erosion and Sediment Control Designer and Reviewer Manual (E&SC Manual) to con trol erosion and sediment generated by construction operations, to correct unforeseen conditions during construction, and to control erosion and sediment prior to the incorporation of permanent erosion and sediment control devices. An electronic version of the E&SC Manual can be found at the following URL: https://www.fdot.gov/programmanagement/Implemented/URLinSpecs/FLErosionSedime ntManual.shtm . FY 2023-24 Return to Table of Contents

104-6.3 Scheduling of Successive Operations: Schedule operations such that the area of

unprotected erodible earth exposed at any one time is not larger than the minimum area necessary for efficient construction operation s, and the duration of exposure of uncompleted construction to the elements is as short as practicable. Schedule and perform clearing and grubbing such that grading operations can be incorporated immediately thereafter. Schedule and perform grading opera tions so that permanent erosion control devices can follow immediately thereafter if conditions on the project permit.

104-6.4 Details for Temporary Erosion and Sediment Control Devices:

104-6.4 1 General: Use temporary erosion, sediment and water pollu tion control

devices found in the E&SC Manual. These devices consist of, but are not limited to, temporary sod, rolled erosion control products, sediment containment systems, runoff control structures, sediment barriers, inlet protection systems, silt fenc es, turbidity barriers, and chemical treatment. For design details for some of these devices, refer to the E&SC Manual. Perform installation, inspection, maintenance, and removal of all temporary erosion and sediment control devices in accordance with appl icable permits, manufacturer’s directions , and the Contract Documents.

104-6.4 2 Temporary Sod: The Engineer may designate certain areas of sod

constructed in accordance with Section 570, as a temporary erosion control device. Do not use seed as a tempor ary erosion control device. The Engineer may waive the turf establishment requirements of Section 570 for areas of temporary sod that will not be a part of the permanent construction.

104-6.4 3 Runoff Control Structures: Construct runoff control structur es in

accordance with the details shown in the Contract Documents.

104-6.4 4 Sediment Containment Systems: Construct sediment containment

systems in accordance with the details shown in the Contract Documents. Clean out sediment containment systems as necessary in accordance with the Contract Documents.

104-6.4 5 Sediment Barriers: Provide and install sedime nt barriers according to

details shown in the Contract Documents or , as directed by the Engineer to protect against downstream accumulation of sediment. Sediment Barriers include, but are not limited to synthetic bales , silt fence , fiber logs and geosynthe tic barriers . Reusable barriers that have had sediment deposits removed may be reinstalled on the project as approved by the Engineer.

104-6.4 6 Silt Fence :

104-6.4 6.1 General: Furnish, install, maintain, and remove silt fences, in

accordance with the applicable permits, the manufacturer’s directions, and the Contract Documents .

104-6.4 6.2 Materials and Installation: Use a geotextile fabric made

from woven or nonwoven fabric , meeting the physical requirements of Section 985 according to those applications for erosion control. Choose the type and size of posts and wire mesh reinforcement (if required). Do not use products which have a separate layer of plastic mesh or nett ing. Provide a durable and effective silt fence that controls sediment in accordance with the Contract Documents . Erect silt fence at upland locations and at temporary locations shown in the Contract Documents or where continuous construction activitie s change the natural contour and drainage runoff. Do not attach silt fence to existing trees unless approved by the Engineer. FY 2023-24 Return to Table of Contents

104-6.4 6.3 Inspection and Maintenance: Inspect all silt fences in

accordance with any applicable permit. If the project does n ot have a permit, inspect within 24 hours after each rain event and at least daily during prolonged rainfall. Immediately correct any deficiencies. In addition, make a daily review of the location of silt fences in areas where construction activities have changed the natural contour and drainage runoff to ensure that the silt fences are properly located for effectiveness. Where deficiencies exist, repair or replace silt fences in accordance with the Contract Documents or as directed by the Engineer. Remove sediment deposits when the deposit reaches approximately 1/2 the height of the silt fence or as directed by the Engineer. Shape any remaining sediment deposits to conform with the finished grade and prepare the area for turf in accordance with Section 570.

104-6.4 7 Floating Turbidity Barriers and Staked Turbidity Barriers:

Furnish, install, maintain, and remove floating turbidity barriers in accordance with the applicable permits, the manufacturer’s directions, and the Contract Documents. The Contrac tor may need to deploy turbidity barriers around isolated areas of concern (such as, seagrass beds, coral communities) both within as well as outside the project limits. The Engineer will identify such areas. Place the barriers prior to the commencement of any work that could impact the area of concern. Ensure that the type of barrier used and the deployment and maintenance of the barrier will minimize dispersion of turbid waters from the project. The Engineer may approve alternate methods or materials. Install and maintain turbidity barriers to avoid or minimize the degradation of the water quality of the surrounding waters and minimize damage to areas where the floating barriers are installed.

104-6.4 8 Inlet Protection System: Furnish and install inl et protection systems as

shown in the Contract Documents.

104-6.4 9 Rolled Erosion Control Products (RECPs) :

104-6.4 9.1 General: Install RECPs in locations where temporary

protection from erosion is needed. Two common applications are described below.

104-6.4 10 Chemical Treatment : Provide chemical treatment in accordance with

the Contract Documents. Chemical treatment may be used to clarify turbi d or sediment laden water that does not meet state water quality standards or to supplement other erosion and FY 2023-24 Return to Table of Contents sediment control devices to aid in their performance. The contractor must provide the required toxicity testing information in accordance with the Contract Documents to the Engineer for review and acceptance prior to using any chemical treatment on the project site.

104-6.5 Removal of Temporary Erosion Control Devices: In general, remove or

incorporate into the soil any temporary erosion control de vices upon incorporation of the permanent erosion control devices into the project. The Engineer may direct that temporary devices be left in place.

104-7 Maintenan ce of Erosion and Sediment Control Devices.

104-7.1 General: Provide routine maintenance of permanent and temporary erosion and

sediment control devices, at no expense to the Department, until the project is complete and accepted. If reconstruction or replacement of erosion and sediment control devices is necessary due to the Contractor’s neglig ence or carelessness or, in the case of temporary erosion and sediment control devices, improper installation, lack of maintenance, excessive wear, design -life exceedance or failure by the Contractor to install permanent erosion control devices as scheduled, the Contractor shall repair or replace such erosion control devices at no expense to the Department. If reconstruction of permanent or temporary erosion and sediment control devices is necessary due to factors beyond the control of the Contractor, the D epartment will pay for replacement under the appropriate Contract pay item or items. Inspect all erosion and sediment control devices at least once every seven calendar days and within 24 hours of the end of a storm event that is 0.50 inches or greater. Maintain all erosion and sediment control devices as required in the Stormwater Pollution Prevention Plan, the Contractor’s Erosion and Sediment Control Plan, and if applicable, as specified in the State of Florida Department of Environmental Protection Ge neric Permit for Stormwater Discharge from Large and Small Construction Activities.

104-8 Protection During Suspension of Contract Time.

Initiate stabilization measures within seven calendar days upon suspension of construction activities. If it is necess ary to suspend the construction operations for any appreciable length of time, shape the disturbed areas to facilitate stormwater runoff and construct earthen berms along the top edges of embankments to intercept stormwater runoff. Provide temporary slope drains in areas that are highly erodible to avoid pollution of surface waters, wetlands, groundwater, or property beyond the project limits . Locate slope drai ns at intervals of approximately 500 feet and stabilize by paving or covering with waterproof materials. Should such preventive measures fail, immediately take action as necessary to effectively prevent erosion and siltation. During suspension of operation s, the Engineer may direct the Contractor to perform additional erosion and sediment control work as necessary.

104-9 Method of Measurement.

When separate items for temporary erosion control devices are included in the Contract, the quantities to be paid for will be:

104-10 Basis of Payment.

Prices and payments will be full compensation for all work specified in this Section, including construction and routine maintenance of temporary erosion control devices. Any additional costs resulting from compliance with the requirements of this Secti on, other than construction, routine maintenance, and removal of temporary erosion control devices, will be included in the Contract unit prices for the item or items to which such costs are related. Temporary sod used as a temporary erosion control device in accordance with 104 -6.4.2 will be paid for under Section 570. Separate payment will not be made for the cost of constructing temporary earth berms along the edges of the roadways to prevent erosion during grading and subsequent operations. The Contrac tor shall include these costs in the Contract prices for grading items. In case of repeated failure on the part of the Contractor to control erosion, pollution, or siltation, the Engineer reserves the right to employ outside assistance or to use the Depar tment’s own forces to provide the necessary corrective measures. Any such costs incurred, including engineering costs, will be charged to the Contractor and appropriate deductions made from the monthly progress estimate. Payment will be made under: Item No. 104- 1- Artificial Coverings/ Rolled Erosion Control Products - per square yard. Item No. 104 - 6- Slope Drains (Temporary)/ Runoff Control Structures - per foot. Item No. 104 - 7- Sediment Basins/ Containment Systems - each. Item No. 104 - 9- Sediment Basin/ Containment system Cleanouts - each. Item No. 104 - 10- Sediment Barriers - per foot Item No. 104 - 11- Floating Turbidity Barrier - per foot. Item No. 104 - 12- Staked Turbidity Barrier - per foot. Item No. 104 - 18- Inlet Protection System - each. Item No. 104 - 19- Chemical Treatment - per square yard. Item No. 104 - 20- Chemical Treatment (floc logs, drums of product) - each. FY 2023-24 Return to Table of Contents SECTION 105 CONTRACTOR QUALITY CONTROL GENERAL REQUIREMENTS

105-1 General.

105-1.1 Quality Control Documentation:

105-1.1 1 Submission of Materials Certification and Reporting Test Results:

Submit certifications prior to placement of materials. Report test results at completion of the test and meet the requirements of the applicable Specifications.

105-1.1 2 Databases: Obtain access to the Department’s databases prior to testing

and material plac ement. Database access information is available through the Department’s website. Enter all required and specified documentation and test results into the Department ’s databases.

105-1.1 3 Worksheets: Make available to the Department, when requested,

worksheets used for collecting test information. Ensure the worksheets at a minimum contain the following:

105-1.1 4 Earthwork Records System: Record QC test results directly into the

Earthwork Records System (ERS) section of the Department’s database. If authorized by the Engineer due to ERS ina ccessibility in the field, collect the data in the field on Department approved forms and enter the data in the ERS section of the Department’s database. Submit the original forms by uploading into the Department’s database.

105-1.2 Inspections to Assure Compliance with Acceptance Criteria :

105-1.2 1 General: The Department is not obligated to make an inspection of

materials at the source of supply, manufacture, or fabrication. Provide the Engineer with unrestricted entry at all times to such parts of the facilities that concern the manufacture, fabrication, or production of the ordered materials. Bear all costs incurred in determining whether the material meets the requirements of these Specifications.

105-1.2 2 Quality Control (QC) Inspection: Provide all necessary inspection to

assure effective QC of the operations related to materials acceptance. This includes but is not limited to sampling and testing, production, storage, delivery, construction and placement. Ensure that the equipment used in the production and testing of the materials provides accurate and precise measurements in accordance with the applicable Specifications. Maintain a record of all inspections, including but not limited to, date of inspection, results of inspection, and any subsequent corrective actions taken. Make available to the Department the inspection records, when requested.

105-1.2 3 Notification of Placing Order: Order materials sufficiently in advance

of their incorporation in the work to allow time for sampling, testing and inspection. Notify the Engineer prior to placing orders for materials. Submit to the Engineer a fabrication schedule for all items requiring commercial inspection at least 30 days before beginning fabrication. These items include steel bridge components, moveable bridge components, pedestrian bridges, castings, forgings, structures erected either partially or completely over the travelled roadway or mounted on FY 2023-24 Return to Table of Contents