Busch Gardens Tampa BGT 2016 Attraction. Construction Surface Water Management Plan CSWMP Stormwater Discharge From Construction Activity

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1 Busch Gardens Tampa BGT 2016 Attraction Construction Surface Water Management Plan CSWMP Stormwater Discharge From Construction Activity Busch Gardens Tampa 3000 E. Busch Boulevard Tampa, FL I certify under penalty of law that this document and all attachments were prepared under my direction or supervision in accordance with a system designed to assure that qualified personnel properly gathered and evaluated the information submitted. Based on my inquiry of the person or persons who manage the system, or those persons directly responsible for gathering the information, the information submitted is, to the best of my knowledge and belief, true, accurate, and complete. I am aware there are significant penalties for submitted false information, including the possibility of fine and imprisonment for knowing violations. Park President James B. Dean title date Florida Facility Page 1

2 1.0 Introduction The CSWMP has been prepared in accordance with good engineering and conservation practices by professionals experienced in the design and implementation of standard erosion and sediment control practices. The plan identifies potential sources of pollution, which may reasonably be expected to affect the quality of stormwater discharges associated with construction activities. In addition this plan describes and ensures the implementation of practices which are used to reduce the pollutants in stormwater discharges associated with construction activity and assures compliance with the regulations and the terms and conditions of the permit. 1.1 This plan will be amended whenever there is a change in the construction project that has a significant effect on the potential for the discharge of pollutants to the stormwater system or if this CSWMP proves to be ineffective in achieving the general objectives of controlling pollutants in stormwater discharges. 1.2 SeaWorld Parks and Entertainment will inform all contractors and subcontractors who will be involved in the implementation of the CSWMP of the terms and conditions of the permit. Before conducting any service at the facility, these contractors and subcontractors shall understand the conditions and standards of the Plan. (See the contractor section of the plan for details.) 2.0 Facility Overview Busch Gardens is located on a 390-acre tract of land located in Tampa, Florida. The park is bounded by on the west by 30 th Street, on the north by Bougainvillea Avenue, on the east by 40 th Street and on the south by Busch Boulevard. 3.0 Site Description The facility is an entertainment theme park consisting of animal exhibits, amusement park rides and food vending operations. The park is operated or occupied by operating, maintenance or security personnel 24 hours per day, 7 days per week. The facility property comprises approximately 390 acres with approximately 50% of the property under roof or paved. The topography of the site is generally flat. Sanitary wastewater is collected and discharged to the City of Tampa sanitary system. Stormwater runoff from the site drains either directly to the City of Tampa storm water culverts or through on-site retention ponds (the three Topi Ponds) to the City s culverts, ultimately discharging to the Hillsborough River. The closest receiving waterway is the Hillsborough River, located less than one mile south of the facility. 3.1 Nature and type of construction activity Busch Gardens Tampa is executing a project, which will result in the expansion of existing building 10 and construction of concrete walks and guest areas within the Egypt attraction area. The project area s drainage system will be designed to tie into the existing BGT Master Drainage Plan, which ultimately discharges to the Hillsborough River. 3.2 Sequence of major activities, which disturb soils The general sequence of construction is as follows: Florida Facility Page 2

3 3.2.1 Install stabilized construction entrance Install silt fences and hay bales as required Clear and grub Construct sedimentation basin Continue clearing and grubbing Stockpile topsoil as required Perform preliminary grading on site as required Stabilize denuded areas and stockpiles as soon as practicable Install utilities, stormsewer, curbs and gutters Apply base to project Complete grading and install permanent seeding/sod and planting Complete final paving Remove accumulated sediment from basins when all construction activity is complete and the site is stabilized, remove any temporary diversion swales/dikes and re-seed/sod as required 3.3 Site Area to be Disturbed 2.65 acres Runoff Coefficients Refer to the Stormwater permit narratives for the following projects in Appendix A. For a detailed description of the project. a. BGT 2016 Attraction Drainage Discussion Site Map, refer to Appendix A. For detailed site plans showing the following: Additions will be made to Appendix as plans are developed for additional projects. a. Drainage patters b. Approximate slopes anticipated after major grading activities c. Areas of soil disturbance d. Outline of areas which may not be disturbed e. Location of major structural and non-structural controls identified in the plan f. Location of areas where stabilization practices are expected to occur g. Surface waters (including wetlands) h. Locations where stormwater is discharged to surface water Name and location of immediate receiving stream latitude longitude name of Outfall Deg. min. sec. deg. min. sec. receiving water TP th St. storm sewer Stormwater runoff from the site drains either directly to the City of Tampa storm water culverts or through on-site retention ponds (the three Topi Ponds) to the City s culverts, ultimately discharging to the Hillsborough River. The closest receiving waterway is the Hillsborough River, located less than one mile south of the facility. Florida Facility Page 3

4 There is a minimal amount of wetlands on the park property, and it is neither affected nor impacted by the construction project. 4.0 Controls SEA has devised and implemented a system of controls that ensures the integrity of the quality of the stormwater runoff. The intricate details of these practices and controls are described on the project property development drawings. The following sequence (also referenced in CSWMP section 3.2) describes the control measures install stabilized construction entrance install silt fences and hay bales as required clear and grub construct sedimentation basin continue clearing and grubbing stockpile topsoil as required perform preliminary grading on site as required stabilize denuded areas and stockpiles as soon as practicable install utilities, storm sewer, curbs and gutters apply base to project complete grading and install permanent seeding/sod and planting complete final paving remove accumulated sediment from basins when all construction activity is complete and the site is stabilized, remove any temporary diversion swales/dikes and re-seed/sod as required 4.1 Erosion and Sediment Controls Stabilization Practices Existing vegetation will be preserved where it is possible and disturbed areas will be revegetated as soon as practical after grading/construction activities are completed in that area. Temporary practices that will be implemented which include: temporary seeding, permanent seeding, mulching, matting, geotextiles, sod stabilization, vegetative buffer strips, phasing and protection of trees, preservation of mature vegetation, etc. SEA will initiate appropriate vegetative practices on the disturbed areas within seven days if they are to remain subsequently undisturbed for more than 45 days. In the event that SEA finds it necessary to disturb land in proximity to a stormwater pond or stream, areas within 50 feet of the stream will have soil stabilization practices initiated within two days on the inactive, disturbed areas. Soil stabilization (either temporary or permanent) will be applied to the disturbed areas within 14 days after final grade is reached on any portion of the SEA construction site. When the seasonal conditions prohibit the application of temporary of permanent seeding, non-vegetative soil stabilization practices such as mulching and matting will be used Structural Practices. SEA will utilize structural practices that store runoff such that sediments will settle prior to stormwater running off-site and by the diversion of flows from exposed soils. These structural practices include silt fences, earth dikes, drainage swales, sediment traps, check dams, subsurface drains, pipe slope drains, level spreaders, storm drain inlet protection, rock outlet protection, reinforced soil retaining systems, gabions, and temporary or permanent sediment basins. Runoff from eroding exposed areas of the site will be limited. Structural practices will be used to control erosion and trap sediment from sites that remain disturbed for more than 14 days. The specific Florida Facility Page 4

5 practices to manage sediments in stormwater runoff include the use of sediment traps, sediment basins, silt fences, earth diversion dikes, check dams and storm drain inlet protection Timing The sediment control structures are functional throughout the earth disturbing activity. The sediment ponds and the perimeter sediment barriers are implemented as the first step of grading and within seven days from the start of grubbing, and these structures will continue to be functional until the upslope development area has been re-stabilized Settling Ponds In circumstances where concentrated stormwater runoff from upslope disturbed areas flows at rates that exceed the design capacity of the sediment barriers, the runoff will pass through a sediment-settling pond with a storage capacity of 3600 ft 3 per acre of drainage area Sediment Barriers Sheet flow runoff from denuded areas is intercepted by sediment barriers. The sediment barriers, (which include sediment fences and/or diversions to settling facilities) are intended to protect adjacent properties and water resources from sediment transported by the sheet flow Stream Practices The structural practices (sediment barriers, diversions, sediment ponds, etc.) are designed, constructed and maintained to protect all adjacent streams from the impacts of sediment runoff Other Practices In general, ABI will utilize erosion and sediment control practices to prevent sediment-laden water from entering storm drain systems (unless such flows are directed to a settling pond). These practices will divert runoff from the disturbed areas and steep slopes (where it is practicable). Channels and outfalls will be stabilized from erosive flows. 4.2 refer to Appendix B for the following: a. Placement of structural control measures at upland locations b. The control measures may include: storm water detention structures (including wet ponds); storm water retention structures; flow attenuation by use of open vegetated swales and natural depressions; infiltration of runoff onsite; and sequential systems (which combine several practices. c. The pollution prevention plan shall include an explanation of the technical basis used to select the practices to control pollution where flows exceed predevelopment levels d. Describe velocity dissipation devices placed at discharge locations and along the length of outfall channels. 4.3 Other Controls The following elements of the stormwater management system are in place at SEA Waste Disposal Florida Facility Page 5

6 No solid waste or liquid wastes (which includes building materials) will be discharged into the stormwater runoff. SEA s environmental management system contains provisions to ensure for the proper characterization and management of such waste streams Off-site Vehicle Sediment Tracking Systems and work practices have been enacted to ensure that off-site vehicle tracking of sediments will be minimized. These systems include stabilized construction entrances, tarps for dump trucks, and housekeeping efforts on the roadways (that include sweeping as necessary) Other SEA operates in compliance with federal, state and local laws and regulations with respect to the management and disposal of solid (and hazardous) wastes. Additionally, the plant s sanitary sewer system is operated in conformance with regulations and expectations of the City of Tampa s sewer district. No septic systems are operated in the vicinity of the subject project site. All SEA septic systems have required permits. Wastes from portable toilets will be hauled from the site for appropriate disposal Fertilizers and Pesticides Pesticides and fertilizers will be applied as necessary to the job site. The applications will be performed in strict conformance with the label instructions. Only professionals trained and competent in their use will use the materials. The facility environmental coordinator will occasionally check the work of the applicators to ensure conformance with requirements. Nutrients will be applied only at rates necessary to establish and maintain vegetation such that discharges will not cause impact to stormwater quality and violate surface or ground water standards Toxic Materials Any toxic materials utilized on the construction site will be properly managed, stored and disposed such that the risk of migration of the substances is limited State/Local Plans SEA certifies that this CSWMP reflects the requirements to protect surface water as specified in Southwest Florida Water Management Districts ERP Permit requirements for sediment and erosion site plans, any site permits, stormwater management site plans and other state permits This CSWMP will be amended to reflect changes applicable to protecting surface water resources required by local sediment and erosion site plans, any site permits, stormwater management site plans and other state permits. 4.4 Maintenance The temporary and permanent sediment control practices will be maintained and repaired as needed to assure that they perform as intended and designed. These controls are designed to operate effectively. Periodic inspections of these controls will be performed to ensure that they are actually operating as intended, and to identify opportunities to improve the controls operation and effectiveness. These maintenance procedures are an integral part of the inspection process, and are described in detail in the next section. Florida Facility Page 6

7 4.5 Inspections The inspection program will be implemented as described below. A copy of a typical inspection form is attached to this CSWMP, and a copy of each inspection is maintained in the plant environmental coordinator s office Members of the facility EHS Department will conduct the inspections, i.e.; these are the Qualified Individuals The following areas will be inspected: a. At least once every seven calendar days and b. Within 24 hours after a storm event >0.25 of rain 1. All points of discharge to surface waters or into municipal stormwater systems. These areas will be inspected to determine whether erosion and sediment control measures are operating effectively and preventing impacts to the receiving waters. 2. All disturbed areas of the site that have not been finally stabilized. 3. Areas used for storage of materials that are exposed to precipitation 4. Erosion and sediment control measures utilized on-site (and identified in the CSWMP) will be observed to ensure that they are operating correctly 5. Locations where vehicles enter or exit the property will be inspected for evidence of vehicle tracking Areas that have received final stabilization will be inspected at least once every month Content of inspections Disturbed areas and areas used to store materials a. Disturbed areas and areas used for storage of materials that are exposed to precipitation shall be inspected for evidence of, or the potential for, pollutants entering the storm water system. A determination will be made regarding the presence of pollutants that may be entering the stormwater drainage system. Corrective actions will be implemented. b. Stormwater management system and erosion and sediment control measures identified in the plan shall be observed to ensure that they are operating correctly. c. In the event that a discharge location is accessible, it shall be inspected to ascertain whether erosion control measures are effective in meeting the performance standards established by this CSWMP. d. Locations where vehicles enter or exit the site shall be inspected for evidence of offsite sediment tracking Revisions to the CSWMP and plan practices The CSWMP site description and stormwater pollution prevention measures described in the plan will be updated as necessary based on the results of site inspections. These plan revisions will take place within 7 calendar days following the inspection. The changes in facility practices will be implemented within 7 calendar days following the inspection Records of inspections The report of the stormwater inspections will include: a. A summary/scope of the inspection, b. Name(s) and qualifications of personnel making the inspection, Florida Facility Page 7

8 c. The date(s) of the inspection, d. Major observations relating to the implementation of the storm water pollution prevention plan, and e. Actions taken to correct deficiencies in the implementation of the goals of the CSWMP Maintenance of Records The records will be retained as part of the CSWMP for at least three years from the date that the site is finally stabilized Certifications The inspection reports identify any incidents of non-compliance. In the event that no incidents of non-compliance have been identified, the inspection report will certify that the facility is in compliance with the storm water pollution prevention plan and this permit. The report shall be signed by an authorized representative of the General Manager, i.e., a qualified person in the EHS Department. 4.6 Non-stormwater discharges From time to time, there may be non-stormwater discharges from construction activities at the site. The SEA Environmental Management system ensures that appropriate pollution prevention measures are in place to minimize the amount of the non-storm water component(s) of the discharges described below. These discharges may include a. Fire hydrant flushing, b. Waters used to wash vehicles or control dust in accordance with efforts to minimize offsite sediment tracking, c. Potable water sources including waterline flutings, d. Irrigation drainage from watering vegetation, e. Routine exterior building wash down that does not use detergents, f. Pavement wash waters (where spills or leaks of toxic or hazardous materials have not occurred - unless all spilled material has been removed) and where detergents are not used, g. Air conditioning condensate, h. Springs, and i. Foundation or footing drains where flows are not contaminated with process materials 4.7 Contractors The following contractors and subcontractors have responsibilities for stormwater pollution control measures related to this CSWMP. The contractors will implement the measure for which they are responsible. contractor responsibility Florida Facility Page 8

9 4.7.2 Attached are signed certifications that the contractors will implement the measures as necessary to achieve the goals of the CSWMP. The certification will be signed before conducting professional service identified above The signed certifications will be maintained with the CSWMP. Florida Facility Page 9

10 Contractor/Subcontractor Certification Form I certify under penalty of law that I understand the terms and conditions of the general National Pollutant Discharge Elimination System (NPDES) permit that authorizes the storm water discharges associated with industrial activity from the construction site identified as part of this certification. job site: Busch Gardens Tampa 3000 E. Busch Boulevard Tampa, Fl name job title date Contracting/subcontracting firm name contracting/subcontracting firm address firm phone number Florida Facility Page 10

11 Facility Inspection Form General Requirements: All of the erosion and sediment controls on-site will be inspected at least once every seven calendar days and within 24 hours after a storm event that has >0.25 of rain 1. Inspection of the entire construction site to identify areas contributing to stormwater runoff, and then to evaluate whether measures described in the CSWMP to prevent erosion, sediment loading, etc. are adequate and properly implemented per the overall SEA project schedule. Additionally, these qualified inspection personnel will determine whether additional control measures are required. circle best response comment Measures adequate and properly implemented acceptable unacceptable to prevent erosion, sediment loading, etc. Practices in place in accordance with CSWMP acceptable unacceptable and project schedule. Additional control measures required? yes no 2. Inspect disturbed areas (that have not been fully stabilized) and locations used for the storage of materials that are allowed to come into contact with precipitation (i.e., source materials that may impact stormwater runoff quality). A determination will be made regarding the presence of pollutants that may be entering the stormwater drainage system. Corrective actions will be implemented. circle best response comment Source materials contributing pollutant loading acceptable unacceptable to stormwater runoff. Corrective action required? yes no 3. Inspect erosion and sediment control measures utilized on-site to ensure that they are operating correctly. circle best response Erosion and sediment control measures acceptable unacceptable operating correctly. Corrective action required? yes no comment 4. Inspect stormwater discharge locations (to surface waters or into municipal stormwater systems) to determine whether erosion and sediment control measures are operating effectively and preventing impacts to the receiving waters. circle best response comment Erosion and sediment preventing impacts to acceptable unacceptable receiving waters. Corrective action required? yes no 5. Inspect locations where vehicles enter or exit SEA property will be inspected for evidence of vehicle tracking. circle best response Vehicles not tracking sediments on roadway. acceptable unacceptable Additional control measures required? yes no 6. On a monthly basis, perform an assessment of sites that have been finally stabilized. circle best response Measures adequate and properly implemented acceptable unacceptable to prevent erosion, sediment loading, etc. Additional control measures required? yes no comment comment 7. Inspector comments: I certify under penalty of law that this document and all attachments were prepared under my direction or supervision in accordance with a system designed to assure that qualified personnel properly gathered and evaluated the information submitted. Based on my inquiry of the person or persons who manage the system, or those persons directly responsible for gathering the information, the information submitted is, to the best of my knowledge and belief, true, accurate, and complete. If this summary has not indicated that there are incidents of non-compliance, I certify that the facility is in compliance with the CSWMP and the permit. I am aware that there are significant penalties for submitting false information, including the possibility of fine and imprisonment for knowing violations. name of inspector qualification of inspector (e.g., job title) date of inspection Florida Facility Page 11

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14 BGT ATTRACTION Our Job No SITE & PROJECT NARRATIVE On behalf of our client, Sea World Parks and Entertainment LLC, this is to request for Environmental Resource Permit Modification for the BGT Attraction. The 2.65 acre project area is located within the Egypt attraction area of the Bush Gardens Tampa theme park. This acre theme park is bound to the north by Bougainvillea Ave., east by N. McKinley Dr. (40 th St), south by E. Busch Blvd., and west by N. 30 th St. The proposed project calls for the removal of approx. 28,349 s.f. of existing concrete paving and the expansion of the existing museum building by approx. 11,605 s.f.. The project also proposes the construction of approx. 40,751 s.f. of new concrete walk and trench area. This results in an approximate 12,402 s.f. impervious area increase from the existing condition. The project area is included in the Busch Gardens Master Drainage Plan (Permit # ) and the subsequent BG-2000 Expansion (Permit # ) modification. Per the Master Drainage Plan, the project area is located within drainage basins 802 and 803, which both drain to Retention Basin No. 2 (node 80). Retention Basin No.2 discharges to Sabal Lake (Node 81), which ultimately outfalls to N. 40 th St. (node 97) (please see attached Master Drainage Map per BG-2000 Expansion). Per the BG-2000 Expansion approved drainage analysis, the Post-developed 25 Year/24 Hour discharge from Lake Sabal to N. 40 th St. was 4.57 cfs, while the Pre-developed 25 Year/24 Hour discharge from Lake Sabal to N. 40 th St. was cfs. Therefore the post-developed 4.57 cfs discharge to N. 40 th St was well below the maximum allowable pre-developed discharge of cfs. The proposed 12,402 s.f. total increase in impervious area will only slightly raise the existing CN values of basins 802 and 803 and therefore will not have a significant effect on the existing drainage system to Sabal Lake and its discharge to 40 th Street. Please see below: Basin 802 Existing CN Value (per Permit # ) Drainage Area= 228,440 s.f. Hydrologic Group CN Area (s.f.) Impervious A 98 71,900 Open Space A ,540 Existing Basin 802 CN value = 57.57

15 Proposed CN Value Drainage Area= 228,440 s.f. Hydrologic Group CN Area (s.f.) Impervious A 98 76,715 Open Space A ,725 Proposed Basin 802 CN value = Basin 803 Existing CN Value (per Permit # ) Drainage Area= 657,071 s.f. Hydrologic Group CN Area (s.f.) Impervious A 98 47,505 Ponds A ,800 Open Space A ,766 Existing Basin 802 CN value = Proposed CN Value Drainage Area= 657,071 s.f. Hydrologic Group CN Area (s.f.) Impervious A 98 55,092 Ponds A ,800 Open Space A ,179 Proposed Basin 802 CN value = As shown above, the proposed impervious area increase will only slightly increase the existing basin CN values and therefore will not have a significant effect on the existing drainage system to Sabal Lake and its discharge to 40 th Street. Furthermore, any slight increase above the existing 4.57 cfs discharge from Sabal Lake to 40 th Street, would be well below the maximum allowable discharge of cfs from the pre-developed condition of the Master Drainage Plan.

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17 APPENDIX B Keynote List SEE GENERAL DWG INFO. SHEET FOR COMPLETE LIST NOT FOR CONSTRUCTION THE SEAL AND SIGNATURE APPLY ONLY TO THE DOCUMENT TO WHICH THEY ARE AFFIXED, AND EXPRESSLY DISCLAIM ANY RESPONSIBILITY FOR ALL OTHER PLANS, SPECIFICATIONS, ESTIMATES, REPORTS, OR OTHER DOCUMENTS OR INSTRUMENTS RELATING TO OR INTENDED TO BE USED FOR ANY PART OF PARTS OF THE ARCHITECTURAL OR ENGINEERING PROJECT Accessibility for Persons with Disabilities : This drawing contains layouts and elements critical to providing Access for Disabled Persons. Contractor shall provide verification and certification of Compliance with the applicable accessibility regulations. Design Intent : Outlines, sketches, or references of possible theming, exhibits, and graphics on this drawing are for design intent; to show or describe the character, scope, relationships, forms, size and appearance of the Project, major materials and systems, in general, their quality levels, performance standards, requirements, or criteria. Engineered design, means, methods, manufacture, installation, code compliance, operation, safety, and warranties are to be provided by the Contractor; including engineering documentation signed and sealed by a qualified Engineer licensed to practice by the authority having jurisdiction. The Architect/Designer's review of submittals is for the purpose of checking for conformance with information given and the design concept expressed in the Contract Documents. REVISION NO. REVISION DATE BGT 2016 Attraction Tampa, FL DEMOLITION & EROSION CONTROL DATE DR January 30, 2015 CVM PGAV CK CLIENT LEM SEA SHEET NUMBER C1.0