901Stormwater Pollution Management

–STORMWATER POLLUTION MANAGEMENT STORMWATER POLLUTION MANAGEMENT

901.1DESCRIPTION

Design, implement, inspect and main tain appropriate best management practices to minimize or eliminate erosion, sediment and other pollutants in stormwater runoff from the project. B I D I T E M S U N I T S SWPPP Design Lump Sum SWPPP Inspection Each Water Pollution Control Manager Each Stormwater Compliance Disin centive Assessment Lump Sum

901.2MATERIALS

None Required.

901.3CONSTRUCTION REQUIREMENTS

submit the Notice of Intent (NOI) for authorization to di scharge stormwater runoff from construction activities in accordance with the Kansas Water Pollutio n Control General Permit. This author ization does not cover Contractor plant sites and Contractor-Furnished borrow and waste sites outside the project limits.

The Contractor is required to comply with subsection 901.3b. and use appropriate Best Management Practices

A Storm Water Pollution Prevention Plan (SWPPP) (subsection 901.3c.) is not required. Inspection and Maintenance Reports ( subsection 901.3e.) are not required. A Water Pollution Control Manager ( subsection 901.3d.) is not required. Stormwater Erosion Control Conferences (subsection 901.3f.) are not required.

required permits and clearances required for compliance, SECTION 107. Provide copies of all such permits and clearances to the Engineer. Take all measures necessary to minimize or eliminate erosion, sediment and other pollutants in stormwater runoff from the project and project related borrow areas. Assume responsibility for inspection and maintenance of all erosion and sediment control measures within the project limits, whether originally implemented by the Contractor, KDOT or a third party. Obtain information regarding the SWPPP and active Best Management Practices (BMPs) from the Area Engineer. Maintenance or removal of BMPs not installed by the Contractor may be considered Extra Work, SECTION 104, unless addressed by other items of the contract (e.g. sediment removal). Install devices to establish a perimeter control of the project in areas where it is anticipated that stormwater runoff will leave the project. Install perimeter control devices prior to or simultaneously with the clearing and grubbing operations. Do not perfor m grading until perimeter control devices are in place and approved by the Engineer. Unless requested in writing from the Contractor, and approved in writing by the Engineer, or specified otherwise in the Contract Documents, do not exceed 750,000 square feet of surface area of erodible earth material per equipment spread at one time. The Engineer will lim it the surface area of erodible earth material exposed by clearing and grubbing, excavation, borrow (within right-of-way) and embankment operations. Limit the exposed erodible earth material according to the capability and progress, and in keeping with the approved schedule. Areas will not count toward the 750,000 square feet limit, when the following conditions are met: For areas that will not be disturbed again due to project phasing: • Finish grade the completed area; –STORMWATER POLLUTION MANAGEMENT • Stabilize and maintain stabilization according to SECTION 902; and • Do not disturb the area again without a written re quest from the Contractor and written approval from the Engineer; For areas that will be disturbed again due to project phasing: • Rough grade; and • Stabilize and maintain stabilization according to SECTION 902. DO NOT clear and grub areas unless work will actively be performed in the exposed area (or portions of the exposed area) within 7 calendar days on exposed steep slope areas (40% or greater) or within 14 calendar days for all other exposed areas. If areas are cleared and grubbed and not finish graded, not part of project phasing and no meaningful work toward the completion of the bid item is performed within the exposed area (or portions of the exposed area) for 7 calendar days on exposed steep slope areas (40% or greater) or 14 calendar days for all other exposed areas, stabilize and maintain stabilization of the exposed areas according to SECTION 902 at no cost to KDOT. If on-site or state-furnished off-site borrow areas are to be excavated below the ground water elevation, construct a temporary berm around the borrow area to prevent stormwater runoff from entering the excavated area. Do not ford live streams with construction equipment. Restrict construction operations in rivers, streams and other water impoundments to those areas that must be entered for the construction of temporary or permanent structures. Only use clean aggregate fill for temporary crossing, work platforms, etc. When no longer required, promptly remove all falsework, piling, temporary crossings and other obstructions caused by the construction. Where practical, do not store equipment or materials (including soil stockpiles) within 50 feet of rivers, streams or other surface waters. Avoid storing equipment or materials (including soil stockpiles) in flowlines of ditches or other drainage courses. Where such storage is necessary, obtain the Engineer’s written approval and include in the project SWPPP appropriate best management practices for the storage area. Install and maintain temporary erosion and pollution control devices as shown in the Contract Documents, Implement temporary erosion and pollution control with best management practices (BMPs) as described in the SWPPP. At a minimum, perform the following: • Use temporary best management practices to minimize or eliminate pollutant discharge resulting from the construction of the project; • Use temporary best management practices to prev ent contamination of adjacent streams or other watercourses, lakes, ponds or other areas of water impoundment; • Coordinate temporary best management practices with the construction of permanent erosion control features to provide continuous erosion control; • Schedule construction of drainage structures and permanent erosion control features as soon as practicable; and • Immediately initiate placement of appropriate erosion control Best Management Practices (BMPs) in any exposed steep slope areas (40% or greater) wh ere construction activities have permanently or temporarily ceased, and will not resume for a peri od exceeding 7 calendar days. For vegetative cover areas, in addition to seeding, watering, mulching, and any other required activities related to the planting and establishment of vegetation, utilize other appropriate erosion control practices such as geotextiles or erosion control mats. • Immediately initiate temporary stabilization on areas that have been disturbed after construction activities have permanently ceased on that portion of the project site . Immediately initiate temporary stabilization measures on areas that have been disturbed after construction activities have temporarily ceased on that portion of the project site if constr uction activities will not resume for a period exceeding 14 calendar days. Temporary stabilization may include temporary seeding, geotextiles, mulches or other techniques to reduce or eliminate erosion until either final stabilization can be achieved or until further construction activities take place to re-disturb the area. Notify the Engineer in writing within 24 hours of any chemical, sewage or other material spill which is required to be reported to the KDHE under part 10 of the NPDES permit. The notification shall include at a –STORMWATER POLLUTION MANAGEMENT minimum the material spilled, location of the spill, and a description of containment or remediation actions taken. This notice to the Engineer does not relieve the Contractor of responsibility to report to the KDHE or to any other agency. If temporary erosion and pollution control is not implemented and maintained according to this specification, the approved SW PPP, or the NPDES permit, the Area/Metro Engineer may suspend all or part of the work on the project until conditions are brought into compliance, as determined by the Area/Metro Engineer. KDOT will not issue the Notice of Acceptance, SECTION 105, until all necessary maintenance, corrective actions, removal of unnecessary devices and temporary stabilization is comp leted for the project. Failure to complete this work within the contract time may result in liquidated damages, SECTION 108. All SWPPP related documentation including the original SWPPP, all revisions/amendments, and inspection reports shall be retained by the Engineer upon Acceptance of the project.

submit to the Field Engineer a minimum of 3 original copies of the SWPPP. No contract work may begin until the Field Engineer has approved the SWPPP. Design the SWPPP to comply with the NPDES permit fo r the project. At a minimum, the project SWPPP shall include: • the SWPPP Inspection and Maintenance Report Forms (KDOT Form No. 247); • The planned sequence of major construction activities; • the Contractor’s Erosion Control Site Plan; • the SWPPP Contractor Certification Form 246. The Contractor and all subcon tractors are required to certify that they understand the terms and conditions of the general NPDES permit. The Engineer will provide the SWPPP Certification Form (Form No. 246), or it can be found on the KDOT Internet; • a copy of the Project Notice of Intent Form (NOI) for Stormwater Runoff from Construction Activities. (obtained from KDOT); • An acknowledgement that State and Local requirements have been included in the SWPPP. Review all applicable permits (Corps of Engineers, Department of Agriculture, etc.) for special conditions affecting stormwater pollution control; • Reference Contract Documents pertaining to temporary erosion and water pollution control. KDOT standard specifications, contractual special provisions and the policy on Storm Water Discharges can be found on the KDOT Internet at www.ksdot.org; • A detailed description of Best Management Practices (BMPs) which will be used one or more times at the site for erosion and sediment control. Design, install and maintain BMPs to: • Control stormwater volume and velocity within the site; • Control stormwater discharges; • Minimize the amount of soil exposed during construction activity; • Minimize the disturbance of steep slopes (slopes of 40% or greater); • Minimize sediment discharges from the site; • Control discharges from sediment or soil stockpiles; • Minimize the generation of dust; • Minimize off-site tracking of soils; • Provide storm drain inlet protection for inlets down gradient of sites not fully stabilized or where construction will soon be started; • Design, install, implement and maintain additional BMPs to minimize or eliminate contamination of stormwater runoff to: • Minimize discharge of pollutants from equipment and vehicle washing; • Minimize the exposure of construction waste, trash, pesticides, herbicides, detergents, sanitary waste and other materials present on the site to precipitation and to stormwater; • Minimize the discharge of pollutants from spills and leaks and implement chemical spill and leak prevention and response procedures; • BMPs in this category include but are not limited to:  Waste management including trash containers and regular site cleanup for proper disposal of solid waste such as scrap material, product/material shipping waste, food containers and cups;  Containers and proper disposal for waste paints, solvents, and cleaning compounds; –STORMWATER POLLUTION MANAGEMENT  Portable toilets for proper disposal of sanitary waste;  Storage for construction materials away from drainage courses and low areas. Update the erosion control site plan as work progresses to show changes due to revisions in work schedules or sequence of construction, or as directed by the Engineer. Update the site map to reflect erosion control devices that have been installed or removed.

visit the project during normal work hours on a frequent ba sis and in no instance less than once per week until all physical work is complete and the Engi neer issues the Notice of Acceptance or a partial Notice of Acceptance. The required 180 day observation period for pavement markings is not considered to be physical work. The WPCM shall thoroughly review the project and SWPPP documentation during these site visits to verify the Contractor’s compliance with this specification and with the NPDES permit. In addition, the WPCM shall:  Have the authority to supervise all work performed by the Contractor and subcontractors that involves stormwater requirements or affects stormwater compliance;  Have the responsibility to order Contractor employees and subcontractors to take appropriate corrective action to comply with stormwater requirements, including requiring any such person to cease or correct a violation of stormwater requireme nts and to order or recommend such other actions or sanctions as necessary to meet stormwater requirements;  Be familiar with the Project SWPPP;  Be responsible for updating the Project SWPPP and site maps to accurately reflect the BMPs in use on the project;  Be the point of contact for KDOT regarding stormwater compliance;  Have completed KDOT’s Environmental Inspector Training (EIT) and Environmental Manager Training (EMT) programs within the 12 months prior to beginning construction activities. Maintain these certifications for the duration of the project;  Review and sign SWPPP inspection reports within 3 days after receiving such reports, acknowledging awareness of any deficiencies and ensuring the correction of all deficiencies.  Maintain and monitor an activ e email account capable of recei ving electronic communications including inspection reports, photos and other documents relevant to stormwater compliance. The WPCM may, when approved by the Engin eer, perform SWPPP Inspections according to subsection 901.3e. Immediately notify the Engineer in writing if the designated WPCM is replaced. The replacement WPCM shall comply with the above requirements, except that they shall have completed the training requirements within the 12 months prior to assuming WPCM duties. The notification shall include training certificates and contact information for the replacement WPCM.

Environmental Inspector Training (EIT) and maintain a current certification while performing SWPPP Inspections. KDOT’s Inspector and the Contractor’s Environmental Inspector shall perform a joint inspection of the temporary erosion and pollution control devices every 14 days during normal work hours and within 24 hours of a rainfall event of ½ inch or more. Continue inspections at this frequency until all physical work is complete and the Engineer issues the Notice of Acceptance or a partial Notice of Acceptance. The required 180 day observation period for pavement markings is not considered to be physical work. Document the SWPPP inspections on KDOT Form 247, (SWPPP Inspection and Maintenance Report). KDOT and Contractor Inspectors shall each sign the report. Correct any deficiencies noted during a SWPPP Inspection within 7 days of the inspection despite weather conditions that make it difficult (but not impossible) to perform corrections. No additional time shall be granted for making corrections on the basis of weather unless it is physically impossible due to flooding or frozen ground conditions for the Contractor to complete the corrections within the 7 days allowed. No additional time will be granted to complete corrective actions unless approved by the Stormwater Compliance Engineer. Submit completed copies of KDOT Form 247 to the Area/Metro Engineer and the Contractor’s WPCM within 24 hours after an inspection has been made. –STORMWATER POLLUTION MANAGEMENT The WPCM shall review and sign the report within 3 calendar days of receiving the completed inspection report. The WPCM’s signature acknowledges awareness of all reported deficiencies and corrective actions required to be taken within 7 calendar days of the inspection. The Contractor Inspector’s signature acknowledges awareness of all reported deficiencies and corrective actions required to be taken within 7 calendar days of the inspection. The obligation to conduct formal inspections and comple te an associated report every 14 days and within 24 hours of a rainfall event of ½ inch or more does not limit or otherwise modify the Contractor’s obligation to monitor and maintain temporary erosion and pollution control devices daily.

construction conference before the start of construction activities. KDOT and the Contractor shall also hold stormwater erosion control c onferences before the start of each major phase of construction and before the winter shutdown period begins. These conferences shall be attended by the KDOT Area/Metro Engineer, the WPCM, and Environmental Inspector(s) for the Project, and any erosion control subcontractor(s). The attendance sheet and minutes of the conference will be kept in the SWPPP notebook.

performed according to subsection 901.3e. are not corrected within 7 calendar days of the inspection, the Contractor shall be liable for a disincentive assessm ent. The disincentive assessment charged and owing shall be fifty dollars ($50) per day for each deficiency not corrected. Should an event causing flooding or frozen ground conditions make it impossible to perform corrections within the allowed time, notify the Area/Metro Engineer an d the Stormwater Compliance Engineer within 48 hours of the event. Within 3 days of the notification, submit in writing an explanation and description of the reasons for the delay; the anticipated duration of the delay; all actions taken or to be taken to prevent or minimize the delay; and a schedule for implementation of any measures to be taken to prevent or mitigate the delay. Include with the submittal any relevant documentation supporting the claim that the delay is due to impossible conditions and that best efforts were made to complete the required correctio ns and to minimize any delay to the extent possible. No additional time will be granted to submit the required in formation unless approved in writing by the Stormwater Compliance Engineer. The Engineer will deduct and withhold from contract funds the Stormwater Compliance Disincentive Assessment under subsection 901.3g. The assessments are to be computed in the same manner as damages under SECTION 108 (Liquidated Damages and Disincentive Assessments) except calendar days include Sundays, Holidays and the Winter Holiday Period. If contract funds are insufficient, the Contractor shall pay KDOT the balance owed. If the Contractor fails to pay KDOT the amount owed within 10 days after demand from KDOT, the Contractor shall be considered in breach of contract under SECTION 108. The disincentive assessments under subsection 901.3g. are in addition to federal and state statutory penalties and fines that are allowed against the Contractor under the Clean Water Act and other environmental laws for violations of those laws. See also subsection 901.3h.

and fines against the Contractor because of the Contractor’s failure to comply w ith applicable laws, regulations, ordinances, NPDES permit, other permits, the SWPPP, governmental administrative compliance orders or corrective orders for the Project, or a combination thereof. Nothing in this SECTION 901 prevents KDHE, EPA, or both from assessing penalties and fines against the Contractor because of the Contractor’s failure to comply with an administrative claims settlement or consent decree that governs KDOT projects and that is included in the Proposal Form or that is added “Extra Work”, SECTION 104. Understand that penalties/fines may be imposed against KDOT, the Contractor, or both because of “shared” responsibility/liability under ap plicable environmental law, regulations , ordinances; the NPDES permit, other permits, the SWPPP, administrative corr ective action orders, administrative claims settlements, consent decrees, legal judgments or a combination thereof. The Contractor shall have no claim that such shared responsibility/liability voids the Contractor’s liability for disincentive assessments under subsection 901.3g. or for penalties/fines under subsection 901.3h. –STORMWATER POLLUTION MANAGEMENT

901.4MEASUREMENT AND PAYMENT

The Engineer will measure each SWPPP inspection performed in compliance with this specification. The Engineer will measure each Wa ter Pollution Control Manager (WPC M). Each is defined as each calendar week (Sunday-Saturday) that the Contractor provides a WPCM according to subsection 901.3.d. Each week will be measured only once, regardless of the number of site visits or time spent performing WPCM duties for that week. The Engineer will measure SWPPP design for payment as a lump sum upon the Area Engineer’s approval. All revisions or updates to the SWPPP shall be subsidiary. The Engineer will assess disincentives under the bid item "Stormwater Compliance Disincentive Assessment" by the Lump Sum.