Soil_&_Groundwater_Management_Plan.pdf

Soil & Groundwater Management Plan Collins Street Complete Streets Project Plant City, Florida

Prepared for:

The City of Plant City 302 West Reynolds Street Plant City, Florida 33563

Mr. Frank Coughenour, P.E.

Prepared by:

MADRID CPWG

2030 State Road 60 East Bartow, FL 33830

863-533-9007

Project No. 14831.15 November 2024

Madrid CPWG

2030 State Road 60 E Ph: (863) 533-9007 Bartow FL 33830-4268 Fax: (863) 533-8997

AT THE READY www.madridcpwg.com

November 13, 2024

Mr. Frank Coughenour, PE, Senior Engineer City of Plant City, Engineering Department 302 West Reynolds Street Plant City, Florida 33563

Re: Soil and Groundwater Management Plan

Collins Street Re-Development Plant City, Florida

Madrid Project No. 14831.15

Dear Mr. Coughenour, As requested by the City, Madrid Engineering Group, Inc., dba Madrid CPWG, (Madrid) is pleased to submit this Soil and Groundwater Management Plan (Plan) prepared for the above reference project. This Plan is intended as a supporting document for city personnel, contractors, and/or site workers to provide information and guidance regarding known impacts to both soil and groundwater media at and adjacent to the South Collins Street corridor re-development site. The Plan is not intended to supersede practices, operating procedures, and site safety plans of contractors and/or personnel performing work at the project site.

We appreciate the opportunity to be of service to you on this project and look forward to working with you on future projects. If you have any questions, please do not hesitate to contact us.

Respectfully Submitted, Madrid CPWG

Michael Graves, PG John Delashaw, PE Senior Geologist Principal

Attachment: Soil and Groundwater Management Plan

Table of Contents

1.0 INTRODUCTION

2.0 PURPOSE

2.1 Contractor Notification

2.2 Worker Education and Safety

2.3 Hazard Recognition

2.4 Soil and Groundwater Management

3.0 PREVIOUS ENVIRONMENTAL ASSESSMENTS

4.0 PROJECT SITE CONTAMINANTS

5.0 HAZARD ASSESSMENT

6.0 CONTAMINANT EXPOSURE PRECAUTIONS

6.1 Routine Control

6.2 Dust Control

6.3 Surface Grading

6.4 Excavation and Trenching

6.5 Waste Minimization

7.0 PERSON PROTECTION

7.1 Skin Protection

7.2 Personal Hygiene

7.3 Decontamination

8.0 SUSPECT MEDIA MANAGEMENT

8.1 Isolate Suspect Soils

8.2 Containerize Suspect Groundwater

8.3 Measurement of Changed Condition

9.0 SOIL MANAGEMENT

9.1 Onsite Disposition

9.2 Confirmatory Chemical Analyses

9.3 Off-Site Disposal

10.0 GROUNDWATER MANAGEMENT

11.0 IMPORTED FILL

12.0 SUMMARY

Soil and Groundwater Management Plan Collins Street Corridor Re-Development

The EARTH is Our Business www.madridcpwg.com

APPENDICES

Appendix A – Figures Figure 1 – Site Location Map

Figure 2 – Station 521+53 Figure 3 – Station 515+73 Figure 4 – S. Collins St. and E. Alabama St. Intersection

Appendix B – Toxicological Data Fact Sheets

Ammonia Arsenic BHC (insecticide) Cadmium Dieldrin (pesticide) Ethylbenzene (petroleum compound) Gasoline

Iron (fact sheet not available) Lead Manganese Naphthalene (petroleum compound) Nitrate and Nitrite Polycyclic Aromatic Hydrocarbons (petroleum compound)

Sulfate (fact sheet not available) Total Petroleum Hydrocarbons (petroleum compound)

1.0 INTRODUCTION

Madrid Engineering Group, Inc dba Madrid CPWG (Madrid) prepared this Soil and Groundwater Management Plan (Plan) for the proposed South Collins Street renovation project, located in downtown Plant City, Hillsborough County as shown on Figure 1. This Plan is based on results of previous soil and groundwater investigations completed at properties (parcels) located adjacent and near the proposed project corridor. This Plan was prepared to assist city personnel, contractors, and/or site workers with advance planning for hazard recognition, suggested soil excavation, handling, storage, characterization and proper disposal procedures, and groundwater dewatering management and disposal procedures.

2.0 PURPOSE

The purpose of this Plan is to inform the city personnel, future contractors, and site workers of potential residual contaminants that could be encountered in soil and groundwater at the site during excavation activities. The Plan identifies work practices to be used to reduce the potential for exposure to minor concentrations of residual chemicals in soils and groundwater if present. This Plan is not intended to direct activities or supersede practices and procedures that are part of the Contractors operating procedures or safety plans of those performing work at the site.

This Plan includes the following information:

• Descriptions of known or suspected contamination within the proposed construction site.

• A description of site information and FDEP requirements so contractors can review and make professional opinions on soil and groundwater management procedures to be in accordance with regulatory requirements.

• A description of the site environmental safety responsibilities and contingency actions to be implemented, if necessary, at the project site.

• A description of management practices for potential impact from groundwater or storm water (i.e., groundwater/stormwater contact with known contaminated soils during excavation) that requires treatment of disposal.

• Hazard recognition procedures when working with impacted media.

• Hazard response procedures, if needed, when working with impacted media.

2.1 Contractor Notification

City personnel, contractors, and site workers are hereby notified that some soil and groundwater encountered could contain elevated concentrations of contaminants resulting from historic operations performed throughout the project site and/or nearby sites. Known contaminants include manganese and volatile organic halocarbons (VOH’s).

2.2 Worker Education and Safety

This Plan provides the city, contractors, and/or site workers information for use in complying with employer obligations such as employee right-to-know, worker safety, and other regulatory programs. It provides general guidelines for reducing potential exposures of workers to environmental media having chemical impact.

This Plan serves as an educational document for city personnel, contractors, and site workers involved with management of environmental media on the project site. It is intended to draw awareness tom the concept and value of media management and to provide contractors with knowledge of the potential contaminants of concern throughout the project site, as derived from information obtained from previous environmental investigations.

This Plan is not intended for direct, unmodified use for city personnel, contractors, and/or site workers. Rather, it intends to provide general information and considerations for performing professional opinions and modification and incorporation by employers into their existing worker safety programs. Each employer is responsible for the health and safety of its own workers. Contractors may use this Plan to support employees right-to-know for workers performing excavations or other activities that disturb impacted media throughout the project site.

2.3 Hazard Recognition

A key element of this Plan is to inform and educate contractors and their site workers to be alert for new or undiscovered conditions that could potentially pose a chemical exposure risk. This Plan provides a process for quantitatively and qualitatively identifying whether the condition encountered presents a potential hazard condition different from conditions evaluated.

2.4 Soil and Groundwater Management

This Plan provides suggested procedures for site workers to control soil or groundwater suspected to contain residual contaminants. Soils with concentrations below the FDEP Soil Cleanup Target Levels (SCTLs) for residential direct exposure may exhibit staining or odors but may not require special management. The FDEP minimum concentration criteria represents levels of contaminants in respective environmental media (soil) at which normal exposure is considered unlikely to pose a threat to human health or the environment. Residual contaminant concentrations above these standards do not necessarily represent a hazard to workers or site occupants.

The FDEP regulates handling and disposal of environmental media with contaminant concentrations above the FDEP SCTL criteria. Until suspected media can be tested for present concentrations of a contaminant, contractors should implement containment and control of all removed media and/or materials.

3.0 PREVIOUS ENVIRONMENTAL ASSESSMENTS

A comprehensive review was performed of all available documents regarding soil and groundwater contamination along the proposed Collins Street rehabilitation area.

Documents included those provided by the City of Plant City, in addition to additional reports, office memos, telephone conversation notes and meeting notes on-file with the Florida Department of Environmental Protection (FDEP) and the Hillsborough County Environmental Protection Agency (HCEPA). The review was completed to identify areas having the potential for exposure to contaminants during construction activities that involve subsurface disturbances. These activities include soil excavations, groundwater dewatering, and drilling operations conducted by city personnel and subcontractors.

401 Collins Street - All United Automotive (formerly Ramco Service Center)

Assessments previously conducted at the property identified both soil and groundwater contamination. Soil and groundwater quality data identified both Soil Cleanup Target Level (SCTL) and Groundwater Cleanup Target Level (GCTL) exceedances of numerous petroleum-related products (i.e., gasoline and diesel).

The potential for exposure to petroleum-related contamination during the proposed construction along the Collins Street corridor is low. The primary exposure would be contact with contaminated groundwater from dewatering, excavating, or drilling activities.

627 Collins Street - Petrol Mart

Numerous assessments of soil and/or groundwater conditions were completed at the former Petrol Mart site. No soil impacts above residential direct exposure SCTLs have been documented; however, petroleum-related contamination was discovered in the groundwater immediately beneath a former fuel dispenser area with low level impacts extending to the property boundary on the north side of the site.

The potential for exposure to petroleum-related contamination during the proposed construction along the Collins Street corridor is moderately high due to the nature of the contaminants present. The primary exposure would be contact with contaminated groundwater from dewatering, excavating (below water table), or from drilling activities.

305 South Evers Street and 415, 509, 510, 511, and 530 South Collins Street - Former Stock Building Supply / McGinnes Lumber Yard

Soil and groundwater assessments conducted throughout the former Stock Building Supply / McGinnes Lumber Yard confirmed the presence of Arsenic and Benzo(a)pyrene contamination. Although groundwater analyses initially identified the presence of Manganese, Thorium, and gross beta, later sampling results identified only Manganese and Iron in exceedances of GCTLs.

Additional assessments identified soil contamination from Arsenic concentrations above the applicable residential direct exposure SCTL. Concentrations of Arsenic within the groundwater were below the applicable GCTL.

A potential for exposure to Manganese, Iron, and/or Arsenic contamination during the proposed construction along the Collins Street corridor is moderately high due to the nature of the contaminant. The primary exposure would be contact with contaminated groundwater from dewatering, excavating, or drilling activities.

306 and 307 South Evers Street - Former Gro-Mor Bulk Fertilizer Plant

Site assessments included the investigations for the presence of herbicides, pesticides, petroleum, solvents, PCBs, and the 13 Priority Pollutant Metals. Soil analytical results indicated SCTL exceedance in shallow soil from Arsenic, Chromium, BHC-b (an insecticide), and BaP equivalent compounds. Groundwater analytical results indicated GCTL exceedances for Cadmium, Dieldrin (an insecticide), Nitrate, and Nitrogen as Ammonia. Soil excavation activities were performed to remediate the soil impacts.

Later groundwater assessments identified GCTL exceedances for Cadmium, Nitrate, Ammonia Nitrogen, Manganese, Sulfate, Iron, and radionuclides (gross alpha and combined radium 226-228). These compounds are associated with the former operations of the historical fertilizer plants.

A Risk Management Options Level III-GWMP Sampling Report dated October 19, 2020, included results of the August 2020 groundwater sampling activities, and provided statistical analysis of the monitored parameters. The analysis indicated that Sulfate, Nitrate, and Ammonia concentrations are stable at each of the sampling locations.

The potential for exposure to contaminated groundwater related to the former Gro-Mor Fertilizer Plant operations during the proposed construction along the Collins Street corridor is high. The primary exposure would be contact from dewatering, excavating, or drilling activities.

4.0 PROJECT SITE CONTAMINANTS

Using the detailed Phase 1 construction drawings provided by the city, structures were noted that will extend beneath the present land surface beyond 18 inches in depth. These features included streetlight supports, traffic control light supports, and subsurface utility piping and associated structures. The locations of these areas of proposed subsurface disturbances were compared with locations of documented soil and/or groundwater contamination along the Collins Street corridor. The findings of areas with the potential for direct exposure were identified as below:

1. The utility structure S-114 at Station 521+53, shown on Figure 2, will require excavation to a depth of approximately 10 feet below land surface (BLS). No potential for soil contamination appears of concern; however, due to a high-water table (estimated at 3 to 5 feet BLS), dewatering will be necessary. Although the area is outside the 50 mg/L concentration plume boundary for manganese, a potential for exposure/contact with the impacted groundwater exists. During dewatering activities, the collection and analysis of effluent samples is recommended. In the event of excessively high concentrations of manganese, discharged water will require temporary on-site storage and proper disposal.

2. The utility structure S-106 at Station 515+73, shown on Figure 3, will require excavation to a depth of approximately 10 feet below land surface (BLS). No potential for soil contamination appears of concern; however, due to a high-water table (estimated at 3 to 5 feet BLS), dewatering will be necessary. Although the area is outside the 50 mg/L concentration plume boundary for manganese, a potential for exposure/contact with the impacted groundwater exists. During dewatering activities, the collection and analysis of effluent samples is recommended. In the event of excessively high concentrations of manganese, discharged water will require temporary on-site storage and subsequent proper disposal.

3. The proposed drilled shaft installations for the mast arm structures at the northeast and southwest corners of the intersection of South Collins Street and Alabama Street East will require drilling to depths of 18 feet BLS and 24.5 feet BLS, respectively (Figure 4). The location is within the known manganese groundwater plume, and a potential for exposure/contact with the impacted soil and groundwater exists. In addition, documented volatile organic halocarbon (VOHs) contamination exists in the groundwater at the adjacent Petro-Mart facility located at 627 Collins Street (southwest corner of the intersection). Drill cuttings removed from the subsurface will require sampling and analyses to confirm the level of manganese and VOH compounds prior to proper off-site disposal.

The confirmation of proposed structures intersecting contaminated soil or groundwater and the exposure potential assessments made herein are based on documented contamination. Areas where no former sampling and testing have been conducted are assumed to be non-impacted by past land uses practices and would pose no exposure potential. If stained soils and/or groundwater containing chemical odors are encountered within areas where assessment has not been performed, samples of the specific media should be submitted for laboratory analyses to identify the extent of exposure. If there are questions or concerns related to other deep excavations within the project limits, those should be raised with the City prior to excavation.

5.0 HAZARD ASSESSMENT

The compounds of concern are the known contaminants identified during previous environmental investigations at nearby parcels and several parcels adjoining the Collins Street corridor. Disturbance of the shallow soils and/or encountering the groundwater could potentially expose personnel to these compounds and /or additional constituents not yet identified.

Workers should understand that smell/odor is an ineffective indicator of contaminant compounds. Soils containing residual contamination, particularly diesel fuel, commonly exhibit odors without exceeding SCTLs. However, other types of contaminants at concentrations above acceptable risk thresholds do not emit significant odors. Therefore, at a minimum and prior to excavation activities, the contractor and/or personnel conducting the work should develop a site safety plan to address worker exposure to contaminants of concern from soil and groundwater. The safety plan should be implemented consistently with OSHA regulations (29 CFR 1910 and 1926), state, and local regulations. The City of Plant City accepts no responsibility for the contractor’s OSHA obligations.

6.0 CONTAMINANT EXPOSURE PRECAUTIONS

This Plan recognizes that the site construction activities may disturb impacted media, and that out-of-scope activities might expose workers to the chemicals identified in soils and groundwater. This Plan will advise contractors and site workers of the precautionary measures for minimizing potential exposures while operating on-site, and for recognizing and addressing potential new discoveries at the site.

6.1 Routine Control

Incidental disturbances of soil should be avoided. Earthwork and trenching should be planned to minimize disturbances of soils from original locations and original elevations.

Where excavations are advanced to facilitate construction, the contractor should minimize the time excavations remain uncompleted to reduce potential exposure. The contractors and site workers must have a physical method of measuring and monitoring horizontal and vertical control when disturbing soils along the entire corridor to maintain the current conditions.

During routine operations involving soils at the project site, contractor and site workers should use normal contruction safety apparel of their respective contractor’s safety program, augmentedwith gloves and rubberized safety footwear or safety footwear with disposable latex covers to reduce soil contact in areas of enhanced awareness.

For work beyond routine operations, a site health and safety plan should be developed.

The contractor may contact the environmental enginner for assistance if their firm does not have the necessary resources or training to complete a site-specific health and safety plan under 29 CFR 1910.

6.2 Dust Control

Dust control measures should be emloyed at the project site to achieve no visablenemmissions. Personnel operating mobile equip,emt should be instructed to drive slowly to reduce dust generation. Low tipping of excavated loads and covering of stockpiles should be implemented to limit the generation of visable airborne dust. Use of water spray to dampen surface materials should be considered if visable dust is generated during excavation and soil movement. Workers should avoid over-spraying the area to prevent runoff and muddy work surfaces.

6.3 Surface Grading

When working at existing grades, workers should minimize the movement of surface soils from original locations to other areas of the project site. In areas of enhanced awareness, contractors and site workers should plan their work to account for minimal soil movement and to adapt types and applcations of grading equipment to minimize disturbance.

Surface disturbances such as rutting should be repaired immediately by localized leveling. Contractors invol;ved in grading should minimize leveling of the surface through back-dragging with earth-moving equipment until imported fills have been put in to placed.

Although complete and absolute restoration of materials to original locations may not be possible, site workers should attempt to restore soils to original conditions as is practical.

6.4 Excavation and Trenching

Construction of utilities or other structures may disturb the vertical orientation of soil. The general rule will be to remove and stockpile soils so that a “last out, first in” process occurs. During excavation, soils in the upper three feet should be stockpiled onto an impervious surface (i.e., plastic sheeting), and be the last material returned to the excavation during backfilling. Similarly, soils removed from below three feet should be initially placed back into the excavation.

Concerns and methods for environmental handling of soils do not preclude or modify any OSHA safety requirements for worker safety incumbent upon contractors for regular site safety and trenching/excavation activities. The OSHA safety requirements will dictate adjustment of the soil managemant method where necessary.

Installation of utilities of structures may displace soil volume within these areas, resulting in excess soils as excavation spoils. Excess spoils from excavations not needed on the project site will require special handling and proper disposal.

6.5 Waste Minimization

Measures should be taken to minimize the volume of excess soils, to limit the need for dewatering, and to prevent contact between storm water and impacted soils.Excavations should be backfilled promptly to minimize the potential for exposure. The size or length of excavations should be controlled to allow for proper completion of immediately pending activities but should not remain open for extended periods with minimal or no activity.

Excavtion areas should be protected from storm water run-on by constructing soil berms or other diversionary structures on the upslope side of the artea to direct water away from exposed soils and into a proper storm water conveyance system.

7.0 PERSON PROTECTION

7.1 Skin Protection

Contractors are responsible for completing a site health and safety plan under CFR 1910 indentifying and providing appropriate Personal Protective Equipment (PPE) for employees working at then project site. At a minimum, it is recommended that PPE include the following work attire:

• Standard work uniform

• Safety footwear

• Hard hat and safety glasses

• Cotton lined impermeable gloves of nitrile, rubber, or PVC

7.2 Personal Hygiene

Site personnel are advised to use good personal hygiene practices during activities that disturb impacted media at the project site. Work gloves should be worn, and hands, face, and forearms should be washed with soap and water prior to eating, drinking, smoking, or using restroom facilities. Contractors and site workers should avoid any behavior that could increase the potential of hand-to-mouth transfer of any contaminated media. No eating, drinking, or smoking should take place in areas where construction or maintenance activities could expose impacted material.

7.3 Decontamination

Contractors should use brushes, shovels, etc. to conduct gross soil removal from equipment used to excavate or move potentially impacted soils. Decontamination with a high-pressure washer is recommended for equipment that has contacted obviously contaminated soil. Personnel decontamination should consist of thorough washing of hands, forearms, and face before eating, drinking, or smoking. Gross soils should be removed from footwear before leaving the site.

8.0 SUSPECT MEDIA MANAGEMENT

In the event that chemical odors, stained or saturated soils, a sheen on water in excavations, or other evidence of potential chemical contamination is encountered during subsurface activities, contractors and site workers should contact their health and safety ager or general contractor superintendent immediately.

8.1 Isolate Suspect Soils

In the event that contaminated soils are encountered, contractors should upgrade normal construction safety attire with nitrile or chemical resistane gloves and provide sufficient open-air ventilation consistant with the employers safety plan.Suspect soils should be isolated as soon as possible from contact and disturbance by rain and wind until appropriate analytical test results are obtained. Suspect materials should be placed within a 20 cubic yard roll-off box lined with plastic sheeting and temporarily stored on-site until appropriate laboratory analytical results are obtained.

Contractors should be aware of the regulatory implications of improper management or disposal of contaminated soils. Soil that exhibits concentrations above the FDEP regulatede SCTLs cannot be considered as fill material and must be disposed properly at an approved facility.

8.2 Containerize Suspect Groundwater

Groundwater suspected of being contaminated and storm water that contacts contaminated soils should be collected and containerized in drums, totes, or frac tanks until laboratory analyses of the water can be completed. The suspect groundwater includes drilling mud/slurries associated with drilled shafts or other construction activities.

Contractors should upgrade normal construction safety attire with rubber gloves and provide sufficient open-air ventilation consistant withn their safety plan.

8.3 Measurement of Changed Condition

Upon discovery of a possible changed condition, it will be necessary to make chemical measurements to determine if materials pose a previously unidentified chemical risk. This requires laboratory chemical analyses. The turn-aroind-time between sample delivery and receiving the analyical results varies depending on several factors, such as the type of media sampled, the analytical method required, and the number of samples submitted.

The number of samples to be submitted for chemicaL analyses is dependent on actual conditions and volumes of media encountered. The analyses should be sufficient to evaluate potential disposal options at permitted local landfills or water treatment facilities.Samples of excavated materials should be collected at a frequency adequate to achieve generally accepted regulatory practice.

Potentally impacted environmental media should be further isolated from worker and public exposure. Special handling and care must be taken in sampling and transporting soil and groundwater samples for laboratory tests to be accurate. The workers in physical contact or breathing zone of apparently impacted environmental media should have Hazardous Operations and Emergency Response training consistant with 29 OSHA 1910.120.

9.0 SOIL MANAGEMENT

Soils throughout the project site may vary in degrees of chemical impact, ranging from no measurement to elevated concentrations of chemicals of concern. In these locations and at conditions of exposure evaluated by the previous environmental assessments these chemical impacts do not appear to pose excess health risk. If soils are moved from original locations or from the project site, the onsite conditions that allow control of exposures and risk management may nom longer allpy. If excess materials are produced from an excavation as spoils that cannot be restored to original depths through the process of “first out, last in”’ the materials require special handling procedures.

The contractor should plan from the onset of redevelopment activity to maintain physical segregation of materials by degrees of deopth during the excavation activity. The contractor and site workers must exercise care in documenting and recording the location and original elevations of the source of materials relative to site benchmarks and the original property boundaries. Excess materials produced by excavation and trenching that cannot be used on the project site must be managed as discussed in the following sections.

9.1 Onsite Disposition

Excess materials generated as excavation spoils may require laboratory testing. If the laboratory testing indicates that chemicals are less than applicable FDEP criteria, the excess excavation spoils can be reincorporated into the project as fill material in landscaped areas or as engineered fill provided the material is determined to be suitable for reuse by the project superintendent/engineer.

9.2 Confirmatory Chemical Analyses

Following selective excavation/removal of the soils, samples of any excess materials should be collected for laboratory analyses. While the number of samples to be submitted for chemical analyses is dependent on actual conditions and volumes encountered, analyses should be sufficient to evaluate potential disposal options at permitted local landfills. Samples of excavated materials should be collected at a frequency adequate to achieve generally accepted regulatory practice.

9.3 Off-Site Disposal

Excess materials that are not eligible for onsite redistribution (environmentally of structurally) must be removed from the property in a manner consistant with general industry practices. The contractor will transport the excess materails offsite to a permitted disposal facility if elevated concentrations of contaminants are observed or to a location selected by the contractor if no chemical impairment is reported. Non-contaminated excess materials proposed for offsite reuse must be handled and managed in accordance with Federal State, and local regulations.

Results of the previous environmental assessments indicate that some soils may exhibit detectable concentrations of contaminants that measure above the FDEP SCTL criteria.

These materails may require removal from the property if the vertical control requirements cannot be met.

Upon receipt of chemical analyses and receipt of disposal authorization from an appropriately permitted landfill, arrangements for offsite transport and disposal of excavation spoils and excess soils will be coordinated with the appropriate contractor.

10.0 GROUNDWATER MANAGEMENT

Utility trenching or foundation excavations may encounter groundwater depending on the depths of subsurface penetration and the current water table elevation. Dewatering excavations due to groundwater infiltration or storm water flow into open excavations should comply with the guidance provided. Construction activities should be sequenced to reduce the amount of excavation open at any given time to reduce the volume of water requiring management and disposal. Groundwater suspected to be impacted based on changed condition or contact with contaminated soils and/or storm water encountering contaminated soil should be managed as potentially contaminated water.

If dewatering is pumped to a holding tank, the contents should be sampled and tested to determine if contaminants are present. Discharge of untested or untreated groundwater to the ground surface, storm water conveyance, or sanitary sewer system is prohibited.

Depending on the results of laboratory analyses, the accumulated water shall be either transported off site for disposal at a licensed facility, discharged to a municipal sanitary sewer system under the permit and requirements of the wastewater treatment provider, or discharged in accordance with applicable National Pollutant Discharge Elimination System (NPDES) and/or other federal, state, or local permit requirements.

11.0 IMPORTED FILL

Imported fill from an off-site location(s) to be used to backfill excavations or level the site, the material should be obtained from a Florida Department of Transportation (FDOT) approved facility. If imported fill cannot be readily obtained from an FDOT-approved facility, the material should be assessed for potential impacts. A minimum of one sample per 1,000 cubic yards of imported fill is recommended. Laboratory analyses should, at a minimum, include volatile organic compounds (VOCs), polynuclear aromatic hydrocarbons (PAHs), total recoverable petroleum hydrocarbons, and RCRA metals.

12.0 SUMMARY

This document has been developed to inform contractors and site workers of the existing site environmental information. The concentrations of contaminants in environmental media pose a limited health hazard to construction personnel via inhalation of contaminated dust or vapors and the accidental ingestion and direct contact of soil or groundwater. The precautions included herein are intended to reduce the potential for adverse health effects to personnel excavating and managing environmental media at the site. This Plan is intended to address the potential for health hazards due to exposure to contaminants previously identified in environmental media. This Plan is not intended as a comprehensive construction safety program. Contractors should review the site information, make their own professional opinions to comply with required regulations, and are responsible for conducting site activities in accordance with federal, state, and local environmental and safety regulations.

APPENDIX A

Figures

City of Plant City

Source: Collins Street Roadway Plans Cover Sheet - Sheet 1

FIGURE 1

Site Location Map Collins Street Soil GW Mgmnt Plan Plant City, Florida

Drawn By: JD Checked By: MG Project Number:

Notes:

2030 State Road 60 East Bartow, Florida 33830 863 533-9007 Fax: 863 533-8997

EB-0006509

14831.15 john.delashaw Highlight john.delashaw Highlight

Source: Collins Street Roadway Plans Roadway Plan (4) - Sheet 15

FIGURE 2

Station 521+53 Collins Street Soil GW Mgmnt Plan Plant City, Florida

Drawn By: JD Checked By: MG Project Number:

Notes:

2030 State Road 60 East Bartow, Florida 33830 863 533-9007 Fax: 863 533-8997

EB-0006509

14831.15

Source: Collins Street Roadway Plans Roadway Plan (2) - Sheet 13

FIGURE 3

Station 515+73 Collins Street Soil GW Mgmnt Plan Plant City, Florida

Drawn By: JD Checked By: MG Project Number:

Notes:

2030 State Road 60 East Bartow, Florida 33830 863 533-9007 Fax: 863 533-8997

Source: Collins Street Signalization Plans SUE DATA SHEET - Sheet T-11

FIGURE 4

Mast Arms - Collins & Alabama Collins Street Soil GW Mgmnt Plan Plant City, Florida

Drawn By: JD Checked By: MG Project Number:

Notes:

2030 State Road 60 East Bartow, Florida 33830 863 533-9007 Fax: 863 533-8997

APPENDIX B

ATSDR Toxicological Data Fact Sheets

AMMONIA

CAS # 7664-41-7

Division of Toxicology ToxFAQsTM September 2004

This fact sheet answers the most frequently asked health questions (FAQs) about ammonia. For more information, call the ATSDR Information Center at 1-888-422-8737. This fact sheet is one in a series of summaries about hazardous substances and their health effects. It is important you understand this information because this substance may harm you. The effects of exposure to any hazardous substance depend on the dose, the duration, how you are exposed, personal traits and habits, and whether other chemicals are present.

HIGHLIGHTS: Ammonia is found throughout the environment in the air, soil, and water, and in plants and animals including humans. Exposure to high levels of ammonia can cause irritation and serious burns on the skin and in the mouth, throat, lungs, and eyes. At very high levels, ammonia can even cause death. Ammonia has been found in at least 137 of the 1,647 current or former National Priority Sites list identified by the Environmental Protection Agency

(EPA).

What is ammonia?

Ammonia occurs naturally and is produced by human activity. It is an important source of nitrogen which is needed by plants and animals. Bacteria found in the intestines can produce ammonia.

Ammonia is a colorless gas with a very distinct odor. This odor is familiar to many people because ammonia is used in smelling salts, many household and industrial cleaners, and window-cleaning products.

Ammonia gas can be dissolved in water. This kind of ammonia is called liquid ammonia or aqueous ammonia.

Once exposed to open air, liquid ammonia quickly turns into a gas.

Ammonia is applied directly into soil on farm fields, and is used to make fertilizers for farm crops, lawns, and plants.

Many household and industrial cleaners contain ammonia.

What happens to ammonia when it enters the environment?

‘ Ammonia is found throughout the environment in air, water, soil, animals, and plants.

‘ Ammonia does not last very long in the environment. It is rapidly taken up by plants, bacteria, and animals.

‘ Ammonia does not build up in the food chain, but serves as a nutrient for plants and bacteria.

How might I be exposed to ammonia?

‘ Everyone is exposed to low levels of naturally-occurring ammonia in air, food, water, and soil.

‘ You may be exposed to higher levels during use of cleaning products containing ammonia.

‘ You may be exposed to higher levels if you apply ammonia fertilizers or live near farms where these fertilizers have been applied.

‘ You may be exposed to high levels if you go into enclosed buildings that contain lots of animals (such as on farms).

How can ammonia affect my health?

No health effects have been found in humans exposed to typical environmental concentrations of ammonia. Exposure to high levels of ammonia in air may be irritating to your skin, eyes, throat, and lungs and cause coughing and burns.

Lung damage and death may occur after exposure to very high concentrations of ammonia. Some people with asthma may be more sensitive to breathing ammonia than others.

Swallowing concentrated solutions of ammonia can cause burns in your mouth, throat, and stomach. Splashing ammonia into your eyes can cause burns and even blindness.

U.S. DEPARTMENT OF HEALTH AND HUMAN SERVICES, Public Health Service Agency for Toxic Substances and Disease Registry

Federal Recycling Program Printed on Recycled Paper

ToxFAQsTM Internet address is http://www.atsdr.cdc.gov/toxfaq.html

Where can I get more information? For more information, contact the Agency for Toxic Substances and Disease Registry, Division of Toxicology, 1600 Clifton Road NE, Mailstop F-32, Atlanta, GA 30333. Phone: 1-888-422 8737, FAX: 770-488-4178. ToxFAQs Internet address via WWW is http://www.atsdr.cdc.gov/toxfaq.html. ATSDR can tell you where to find occupational and environmental health clinics. Their specialists can recognize, evaluate, and treat illnesses resulting from exposure to hazardous substances. You can also contact your community or state health or environmental quality department if you have any more questions or concerns.

How likely is ammonia to cause cancer?

There is no evidence that ammonia causes cancer. The The Department of Health and Human Services (DHHS), the EPA, and the InternationalAgency for Research on Cancer (IARC), have not classified ammonia for carcinogenicity.

How can ammonia affect children?

Children are less likely than adults to be exposed to concentrated levels of ammonia because most exposures occur at work. The effects on children are likely to be the same as for adults. We do not know if exposure to ammonia causes birth defects, or if it can pass to the fetus across the placenta or to infants via breast milk.

How can families reduce the risk of exposure to ammonia?

‘ Keep products that contain ammonia out of the reach of children.

‘ Make sure there is adequate ventilation when you use cleaners that contain ammonia, and wear proper clothing and eye protection.

‘ Never store cleaning solutions in containers that children might find attractive, like soda bottles.

‘ Avoid farm fields after they have been treated with ammonia or ammonia-containing fertilizers.

‘ Minimize exposure to ammonia in the workplace by wearing proper safety clothes and equipment, and by following safety rules.

Is there a medical test to show whether I’ve been exposed to ammonia?

There are tests to measure ammonia in blood and urine.

These tests can not definitely determine whether you have been exposed because ammonia is normally found in our bodies.

Has the federal government made recommendations to protect human health?

The Food and Drug Administration (FDA) has determined that the levels of ammonia and ammonium salts typically found in foods do not pose a risk to human health.

The Occupational Safety and Health Administration (OSHA) has set an acceptable eight-hour exposure limit at 25 parts of ammonia per one million parts of air (ppm) and a short-term (15 minutes) exposure level at 35 ppm.

Reference Agency for Toxic Substances and Disease Registry (ATSDR). 2004. Toxicological Profile for Ammonia. Atlanta, GA: U.S. Department of Health and Human Services, Public Health Service.

AMMONIA

CAS # 7664-41-7

CS265956-A

Arsenic - ToxFAQs™

CAS # 7440-38-2

This fact sheet answers the most frequently asked health questions (FAQs) about arsenic. For more information, call the CDC Information Center at 1-800-232-4636. This fact sheet is one in a series of summaries about hazardous substances and their health effects. It is important you understand this information because this substance may harm you. The effects of exposure to any hazardous substance depend on the dose, the duration, how you are exposed, personal traits and habits, and whether other chemicals are present.

HIGHLIGHTS: Exposure to higher than average levels of arsenic occur mostly in the workplace, near hazardous waste sites, or in areas with high natural levels. At high levels, inorganic arsenic can cause death. Exposure to lower levels for a long time can cause a discoloration of the skin and the appearance of small corns or warts.

Arsenic has been found in at least 1,149 of the 1,684 National Priority List (NPL) sites identified by the Environmental Protection Agency (EPA).

What is arsenic?

Arsenic is a naturally occurring element widely distributed in the earth’s crust. In the environment, arsenic is combined with oxygen, chlorine, and sulfur to form inorganic arsenic compounds. Arsenic in animals and plants combines with carbon and hydrogen to form organic arsenic compounds.

Inorganic arsenic compounds are mainly used to preserve wood. Copper chromated arsenate (CCA) is used to make “pressure-treated” lumber. CCA is no longer used in the U.S. for residential uses; it is still used in industrial applications. Organic arsenic compounds are used as pesticides, primarily on cotton fields and orchards.

What happens to arsenic when it enters the environment?

•• Arsenic occurs naturally in soil and minerals and may enter the air, water, and land from wind-blown dust and may get into water from runoff and leaching.

•• Arsenic cannot be destroyed in the environment.

It can only change its form.

•• Rain and snow remove arsenic dust particles from the air.

•• Many common arsenic compounds can dissolve in water. Most of the arsenic in water will ultimately end up in soil or sediment.

•• Fish and shellfish can accumulate arsenic; most of this arsenic is in an organic form called arsenobetaine that is much less harmful.

How might I be exposed to arsenic?

•• Ingesting small amounts present in your food and water or breathing air containing arsenic.

•• Breathing sawdust or burning smoke from wood treated with arsenic.

•• Living in areas with unusually high natural levels of arsenic in rock.

•• Working in a job that involves arsenic production or use, such as copper or lead smelting, wood treating, or pesticide application.

How can arsenic affect my health?

Breathing high levels of inorganic arsenic can give you a sore throat or irritated lungs.

Ingesting very high levels of arsenic can result in death.

Exposure to lower levels can cause nausea and vomiting, decreased production of red and white blood cells, abnormal heart rhythm, damage to blood vessels, and a sensation of “pins and needles” in hands and feet.

Ingesting or breathing low levels of inorganic arsenic for a long time can cause a darkening of the skin and the appearance of small “corns” or “warts” on the palms, soles, and torso.

Skin contact with inorganic arsenic may cause redness and swelling.

Almost nothing is known regarding health effects of organic arsenic compounds in humans. Studies in animals show that some simple organic arsenic

Division of Toxicology and Human Health Sciences

Page 2 of 2August 2007

Arsenic

CAS # 7440-38-2

compounds are less toxic than inorganic forms. Ingestion of methyl and dimethyl compounds can cause diarrhea and damage to the kidneys.

How likely is arsenic to cause cancer?

Several studies have shown that ingestion of inorganic arsenic can increase the risk of skin cancer and cancer in the liver, bladder, and lungs. Inhalation of inorganic arsenic can cause increased risk of lung cancer. The Department of Health and Human Services (DHHS) and the EPA have determined that inorganic arsenic is a known human carcinogen. The International Agency for Research on Cancer (IARC) has determined that inorganic arsenic is carcinogenic to humans.

How can arsenic affect children?

There is some evidence that long-term exposure to arsenic in children may result in lower IQ scores. There is also some evidence that exposure to arsenic in the womb and early childhood may increase mortality in young adults.

There is some evidence that inhaled or ingested arsenic can injure pregnant women or their unborn babies, although the studies are not definitive. Studies in animals show that large doses of arsenic that cause illness in pregnant females, can also cause low birth weight, fetal malformations, and even fetal death. Arsenic can cross the placenta and has been found in fetal tissues. Arsenic is found at low levels in breast milk.

How can families reduce the risks of exposure to arsenic?

•• If you use arsenic-treated wood in home projects, you should wear dust masks, gloves, and protective clothing to decrease exposure to sawdust.

•• If you live in an area with high levels of arsenic in water or soil, you should use cleaner sources of water and limit contact with soil.

•• If you work in a job that may expose you to arsenic, be aware that you may carry arsenic home on your clothing, skin, hair, or tools. Be sure to shower and change clothes before going home.

Is there a medical test to determine whether I’ve been exposed to arsenic?

There are tests available to measure arsenic in your blood, urine, hair, and fingernails. The urine test is the most reliable test for arsenic exposure within the last few days.

Tests on hair and fingernails can measure exposure to high levels of arsenic over the past 6-12 months. These tests can determine if you have been exposed to above-average levels of arsenic. They cannot predict whether the arsenic levels in your body will affect your health.

Has the federal government made recommendations to protect human health?

The EPA has set limits on the amount of arsenic that industrial sources can release to the environment and has restricted or cancelled many of the uses of arsenic in pesticides. EPA has set a limit of 0.01 parts per million (ppm) for arsenic in drinking water.

The Occupational Safety and Health Administration (OSHA) has set a permissible exposure limit (PEL) of 10 micrograms of arsenic per cubic meter of workplace air (10 μg/m³) for 8 hour shifts and 40 hour work weeks.

References Agency for Toxic Substances and Disease Registry (ATSDR).

2007. Toxicological Profile for Arsenic (Update). Atlanta, GA: U.S. Department of Health and Human Services.

Public Health Service.

Where can I get more information?

For more information, contact the Agency for Toxic Substances and Disease Registry, Division of Toxicology and Human Health Sciences, 1600 Clifton Road NE, Mailstop F-57, Atlanta, GA 30329-4027.

Phone: 1-800-232-4636

ToxFAQsTM Internet address via WWW is http://www.atsdr.cdc.gov/toxfaqs/index.asp.

ATSDR can tell you where to find occupational and environmental health clinics. Their specialists can recognize, evaluate, and treat illnesses resulting from exposure to hazardous substances. You can also contact your community or state health or environmental quality department if you have any more questions or concerns.

http://www.atsdr.cdc.gov/toxfaqs/index.asp

What are hexachlorocyclohexanes?

Hexachlorocyclohexanes are a group of man-made chemicals. There are several different types of hexachlorocyclohexanes (such as α-, β-, δ-, and γ-hexachlorocyclohexane). These chemicals are solid at room temperature. They may have a musty smell.

Hexachlorocyclohexanes were used as pesticides but are no longer used for this purpose.

One type of hexachlorocyclohexane (γ-hexachlorocyclohexane, also known as lindane) is used in some prescription shampoos/lotions to treat lice and scabies.

What happens to hexachlorocyclohexanes in the environment?

Hexachlorocyclohexanes can get into the environment when they are being packaged or used. Most hexachlorocyclohexanes released this way go either into the air or landfills. Small amounts of hexachlorocyclohexanes from shampoos/lotions may get into wastewater from people washing the treatment off.

Rain washes hexachlorocyclohexanes out of the air. Hexachlorocyclohexanes will stick to soil and sediments (the dirt deposits) at the bottom of lakes, streams, and rivers. Low levels of hexachlorocyclohexanes in water, soil, or sediment are broken down and removed from the environment in a few days to weeks by microorganisms (natural types of bacteria).

How can I be exposed to hexachlorocyclohexanes?

Most people are not likely to be exposed to hexachlorocyclohexanes unless they work at a place that packages or uses these chemicals. It is possible that you could be exposed to small amounts of hexachlorocyclohexanes in contaminated soil or water, if you come into contact with old containers of pesticides, or if you are treated for lice or scabies with shampoos/lotions that have hexachlorocyclohexanes in them.

How can hexachlorocyclohexanes affect my health?

Exposure to hexachlorocyclohexanes affects the nervous system.