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ENVIRONMENTAL ASSESSMENT REPORT FOR ST. CROIX BOUTIQUE HOTEL CHRISTIANSTED, ST. CROIX U. S. VIRGIN ISLANDS SUBMITTED TO THE OFFICE OF COASTAL ZONE MANAGEMENT DEPARTMENT OF PLANNING AND NATURAL RESOURCES GOVERNMENT OF THE VIRGIN ISLANDS SUBMITTED BY Z PROPERTY VI LLC PREPARED BY BIOIMPACT, INC. JUNE 2024 Table of Contents 1.00 NAME AND ADDRESS OF APPLICANT ............................................................... 1 2.00 LOCATION OF PROJECT ........................................................................................ 1 3.00 ABSTRACT ................................................................................................................ 3 4.00 STATEMENT OF OBJECTIVES SOUGHT BY THE PROPOSED PROJECT ...... 3 5.00 DESCRIPTION OF PROJECT ................................................................................... 3 5.01 Summary of Proposed Activity ............................................................................... 3 5.01a Purpose of Project ................................................................................................. 3 5.01b Presence and Location of Any Critical Areas and Possible Trouble Spots .......... 3 5.01c Method of Land Clearing ...................................................................................... 3 5.01d Provisions to Preserve Topsoil and Limit Site Disturbance ................................. 3 5.01e Sediment Control Methods to be Implemented .................................................... 4 5.01f Schedule for Construction Activities and Implementation of Sediment Control Measures ......................................................................................................................... 4 5.01g Maintenance of Sediment and Erosion Control Measures .................................... 4 5.01h Method of Stormwater Management .................................................................... 4 5.01i Maintenance of Stormwater Management System ............................................... 4 5.01j Method of Sewerage Disposal ............................................................................... 4 5.02 Exhibits and Drawings ............................................................................................ 4 5.03 Project Workplan .................................................................................................... 5 6.0 ENVIRONMENTAL SETTING AND PROBABLE PROJECT MODIFICATIONS ......................................................................................................... 5 6.02 Climate and Weather ............................................................................................... 5 6.02 Landforms, Geology, Soils, and Historic Use ........................................................ 9 6.03 Drainage, Flooding and Erosion Control .............................................................. 12 6.03a Existing Drainage Patterns ...................................................................................................... 12 6.03b. Proposed Alterations to Drainage Patterns ............................................................................ 13 6.03c. Discuss the relationship of the project to the coastal floodplain ............................................ 13 6.03d. Peak stormwater flow calculations ........................................................................................ 14 6.03e. Existing stormwater disposal structures ................................................................................. 14 6.03f. Proposed stormwater control facilities ................................................................................... 14 6.03g. Maintenance schedule for stormwater facilities ..................................................................... 15 6.03h. Proposed method of land clearing .......................................................................................... 15 6.03i. Provisions to preserve topsoil and limit site disturbance ........................................................ 15 6.03j. Presence and location of any critical area(s) and possible trouble spot(s) .............................. 15 6.03k. Erosion and sediment control devices to be implemented ..................................................... 15 6.03l. Maintenance of erosion and sediment control devices .......................................................... 15 6.03m. Impacts of terrestrial and shoreline erosion .......................................................................... 15 6.04 Fresh Water Resources ......................................................................................... 16 6.05 Oceanography ....................................................................................................... 16 6.05a Sea Bed Alteration .................................................................................................................. 16 6.05B Tides and Currents ................................................................................................................ 16 1 6.05C Waves .................................................................................................................................... 17 6.05D Marine Water Quality ............................................................................................................ 19 6.06 Marine Resources and Habitat Assessment ......................................................... 20 6.07 Terrestrial Resources) .......................................................................................... 24 6.08 Wetlands ............................................................................................................... 24 6.09 Rare and Endangered Species ............................................................................... 24 6.10 Air Quality ............................................................................................................ 24 7.00 IMPACTS ON THE HUMAN ENVIRONMENT ................................................... 25 7.01 Land and Water Use Plans .................................................................................... 25 7.02 Visual Impact ........................................................................................................ 25 7.03 Impact on Public Services ..................................................................................... 25 7.03a Water ....................................................................................................................................... 25 7.03b Sewage Treatment and Disposal ............................................................................................. 25 7.03c Solid Waste Disposal .............................................................................................................. 25 7.03d Roads, Traffic and Parking ..................................................................................................... 25 7.03e Electricity ................................................................................................................................ 25 7.03f Schools .................................................................................................................................... 26 7.03g Fire and Police Protection ....................................................................................................... 26 7.03h Health ...................................................................................................................................... 26 7.04 Social Impacts ....................................................................................................... 26 7.05 Economic Impact .................................................................................................. 26 7.06 Impacts on Historical and Archeological Resources ............................................ 27 7.07 Recreational Use ................................................................................................... 27 7.07 Waste Disposal...................................................................................................... 27 7.08 Accidental Spills ................................................................................................... 28 7.08 Potential Adverse Effects Which Cannot Be Avoided ......................................... 28 8.00 Mitigation Plans ........................................................................................................ 28 9.00 Alternatives to Proposed Action ............................................................................... 28 10.00 Relationship Between Short Term and Long Term Uses of Man’s Environment .. 28 11.00 Literature Cited ....................................................................................................... 28 Appendix A Qualifications Appendix B Lease of Parcel 8-a Appendix C Hydrology Study List of Figures Figure 1. Location St. Croix Boutique Hotel .............................................................................................. 1 Figure 2. Location of project within the Coastal Zone Management Jurisdiction which is shown in color on this map .................................................................................................................................................. 2 Figure 3. Vicinity Map showing the property in relationship to other island features ............................... 2 Figure 4. A wind rose from Station ST61022 showing the frequency f occurrence of wind speed and direction in 2014. (ERDC, USACE Research and Development Center wis.usace.army.mil/hindcasts.html?dmn=atlantic) ..................................................................................... 7 2 Figure 5. Tropical Cyclone Frequency in the Atlantic (National Weather Service) ................................... 8 Figure 6. Tropical Storm and Hurricane Occurrences in the Atlantic (National Weather Service)............ 8 Figure 7. 1954 Aerial Service Map of the Project Area ............................................................................ 10 Figure 8. The site after Hurricane Hugo in 1989 ...................................................................................... 11 Figure 9. Earthquake probability map, UVI Conservation Data Center ................................................... 12 Figure 10. Existing drainage patterns ....................................................................................................... 12 Figure 11. Proposed drainage pattern - installation of Stormtech System ................................................ 13 Figure 12. FIRM FEMA Map 72 of 94, April 16, 2007 .......................................................................... 14 Figure 13. Tide Predictions Christiansted Harbor (https://tidesandcurrents.noaa.gov/noaatidepredictions.html) .................................................................. 16 Figure 14. Complex currents within Christiansted Harbor, Nichols, et.al, 1972 ...................................... 17 Figure 15. Wave Rose for Station 61022 which is most applicable for the Gallows Bay area. (wis.usace.army.mil/hindcasts.html?dmn=atlantic) .................................................................................. 18 Figure 16. Location of property in relationship with VIAWQMP Station #42. ....................................... 19 Figure 17. Tile #5 Benthic Habitat Map prepared by NOS, NOAA ......................................................... 21 Figure 18. Offshore Benthic Habitats, the project area is highlighted with a yellow star. ....................... 22 1 1.00 NAME AND ADDRESS OF APPLICANT Z Property VI LLC 114 King Street, 2nd Floor, Christiansted, VI 00820 2.00 LOCATION OF PROJECT The St. Croix Boutique Hotel will be constructed on Parcels 7-b and 8-b Hospital Street, Christiansted, St. Croix and will be connected to historic building which is currently being reconstructed on Parcel 7-a Hospital Street. Parking will be placed on Parcel 8-a which is leased by Z Property VI LLC. The St. Croix Boutique Hotel will be located at Latitude 17.745510°N and Longitude - 64.700297°W. The following location map and agency review map depicts the project in reference to adjacent properties and island features as well as the jurisdiction line of the Department of Planning and Natural Resources, Division of Coastal Zone Management. The vicinity map is also attached showing the regional context and vicinity in the U.S. Virgin Islands. Figure 1. Location St. Croix Boutique Hotel 2 Figure 2. Location of project within the Coastal Zone Management Jurisdiction which is shown in color on this map. Figure 3. Vicinity Map showing the property in relationship to other island features. 3 3.00 ABSTRACT Z Property VI LLC is developing a 64-room boutique hotel in the town of Christiansted. This current application is for the permitting of 58 rooms, a restaurant/café and an art gallery which will be connected to the structure on Parcel 7-a Hospital Street which is currently permitting and under construction. The structure will have four levels and consist of 4 buildings constructed around a central bricked courtyard. Parcel 8a is under lease for parking. 4.00 STATEMENT OF OBJECTIVES SOUGHT BY THE PROPOSED PROJECT The objective of the application is to create a 58-room boutique hotel in downtown Christiansted. The properties will be connected to the building currently being renovated on Parcel 7-a Hospital Street to create a 66-room boutique hotel with shops, a restaurant/café and an art gallery. 5.00 DESCRIPTION OF PROJECT 5.01 Summary of Proposed Activity The St. Croix Boutique Hotel will be a 66-room hotel. This application is for the permitting of 58 rooms, a restaurant/café, shops and an art gallery which will be connected to an existing structure currently under construction which houses 8 additional hotel rooms. The hotel will have 33 parking spaces including 2 handicap spaces. The hotel will have a brick paved courtyard and a clubhouse. Runoff will be handled by a Stormtech system which will allow for infiltration. The hotel will be connected to both the public potable water supply and the public sewer system. 5.01a Purpose of Project The purpose of the project is to create a boutique hotel in the town of Christiansted. 5.01b Presence and Location of Any Critical Areas and Possible Trouble Spots The proposed hotel is in the historically developed town of Christiansted and the development on Parcels 7-b and 8-b will connect to a historic building on 7-a Hospital Street which is currently permitted and is being renovated. The parcel has been developed in the past and there are only a few trees along the southern side of the property. The property is within the 100-year flood zone and the finished floor elevation will be an 8ft. 5.01c Method of Land Clearing Parcels 7-b, 8-b and 8-a Hospital Street are almost completely cleared, only a small amount of vegetation will have to be removed along the southern property line. 5.01d Provisions to Preserve Topsoil and Limit Site Disturbance The property has been developed in the past and there are limited environmental resources 4 remaining on the property. The property will be maintaining a 20ft set back from the shoreline. 5.01e Sediment Control Methods to be Implemented Type III Silt fencing will be installed prior to any earth disturbance on the parcels and a construction entrance will be installed. 5.01f Schedule for Construction Activities and Implementation of Sediment Control Measures Type III Silt fencing and the construction entrance will be installed prior to any earth work. The remaining site vegetation will be removed and then excavation will commence for the Stormtech System and building footings. 5.01g Maintenance of Sediment and Erosion Control Measures The silt fences and construction entrance will be maintained throughout the construction as necessary. If deficiencies or damage is noted, they will be repaired immediately. 5.01h Method of Stormwater Management Stormwater will be collected by drains within the courtyard and conducted into a buried Stormtech System given that there is no room on the site for the 0.13 ac-ft of stormwater retention needed. The underground storage chambers will be buried under the parking lot. 5.01i Maintenance of Stormwater Management System The Stormtech System will be maintained as per the manufacturer’s guidelines. Storm drains will be cleaned out after all major rainstorms. 5.01j Method of Sewerage Disposal The proposed boutique hotel will tie into the public sewer system which is available along Hospital Street. 5.02 Exhibits and Drawings Drawing Page Cover Page 7 Site Plan 8 Basement Floor Plan 9 First Level Floor Plan 10 Second Level Floor Plan 11 Third Level Floor Plan 12 Roof Plan 13 Elevation A 14 Elevation B 15 5 Elevation C 16 Sections 17 Existing Site Conditions 18 Stormwater Pollution Prevention Plan 19 Demolition Plan 20 Site and Geometry Plan 21 Paving and Drainage Plan 22 Paving and Drainage Plan Details 23 Paving and Drainage Plan Details 24 Paving and Drainage Plan Details 25 Potable Water and Sanitary Sewer Plan 26 Potable Water and Sanitary Sewer Details 27 5.03 Project Workplan • Install silt fencing and construction entrance. • Remove existing vegetation from the site. • Excavate the site for footings and Stormtech System • Installation of Utilities • Construction of Buildings 6.0 ENVIRONMENTAL SETTING AND PROBABLE PROJECT MODIFICATIONS 6.02 Climate and Weather Prevailing Winds The Virgin Islands lie in the "Easterlies" or "Trade Winds" which traverse the southern part of the "Bermuda High" pressure area, thus the predominant winds are usually from the east northeast and east (IRF, 1977). These trade winds vary seasonally (Figure 6.01.1) and are broadly divided into 4 seasonal modes: 1) December to February; 2) March to May; 3) June to August; and 4) September to November. Below are the characteristics of these modes as taken from Marine Environments of the Virgin Islands Technical Supplement No. 1 (IRF, 1977). December - February During the winter the trade winds reach a maximum and blow with great regularity from the east northeast. Wind speeds range from eleven to twenty-one knots about sixty percent of the time in January. This is a period when the Bermuda High is intensified with only nominal compensation pressure changes in the Equatorial Trough. The trade winds during this period are interrupted by "Northerners" or "Christmas Winds" which blow more than twenty knots from a northerly direction in gust from one to three days. Such outbreaks average about thirty each year. They are created by strengthening of high-pressure cells over the North American continent, which, in turn, allows weak cold fronts to move, southeastward over the entire Caribbean region. These storms are accompanied by intermittent rains and by clouds and low 6 visibility for mariners. March - May During the spring, the trade winds are reduced in speed and blow mainly from the east. Winds exceed twenty knots only thirteen percent of the time in April. The change in speed and direction is the result of a decrease of the Equatorial Trough. June - August Trade winds reach a secondary maximum during this period and blow predominantly from the east to east-southeast. Speeds exceed twenty knots twenty-three percent of the time during July. The trend for increasing winds results from the strengthening of the Bermuda High and a concurrent lowering of the pressure in the Equatorial Trough. Trade winds during this period are interrupted by occasional hurricanes. September - November During the fall, winds blow mainly from the east or southeast and speeds reach an annual minimum. Only seven percent of the winds exceed twenty knots in October. The low speeds result from a decrease in the Equatorial Trough. During this period, especially during late August through mid-October, the normal trade wind regime is often broken down by easterly waves, tropical storms, and hurricanes. Storm and Hurricanes There are numerous disturbances during the year, especially squalls and thunderstorms. These occur most frequently during the summer, lasting only a few hours and causing no pronounced change in the trade winds. A tropical cyclone whose winds exceed 74 miles per hour is termed a hurricane in the northern hemisphere, and significantly affects the area. These hurricanes occur most frequently between August and mid-October (Figure 6.01.2) with their peak activity occurring in September. The annual probability of a cyclone is one in sixteen years (Bowden, 1974). Hurricane Irma hit St. Croix on September 6th of 2017, and two weeks later hurricane Maria hit St. Croix September 19th-20th, 2017. Climate The average annual rainfall on St. Croix is approximately 40 inches, ranging from 30 inches toward the eastern end of the islands to more than 50 inches at the higher elevations to the west. The Limetree Bay Terminal area receives less than 40 inches of rainfall per year on average. Rainfall usually occurs in brief, intense showers of less than a few tenths of an inch and major rainfall events are associated with weather systems (USGS 1998). The Virgin Islands have no sharply defined wet season. The wettest period generally is from September to November, and the driest period is from January to June (USGS 1998). 7 Annual temperatures average 79 degrees Fahrenheit (F), with the winter low averaging 76 degrees F. and the summer high reaching an average of 84 degrees F. Occasionally, maximum daily temperatures will exceed 90 degrees F. and minimum temperatures will drop below 70 degrees F. (Jordan, 1975). Table 1 Monthly Climate Summary from 1972 to 2012 CHRISTIANSTED FORT, VIRGIN ISLANDS (671740) Period of Record Monthly Climate Summary Period of Record: 1/1/1972 to 4/30/2012 Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec Annual Average Max. Temperature (F) 82.8 83.1 83.2 84.4 86.1 87.0 87.0 87.4 87.8 87.5 85.7 83.5 85.5 Average Min. Temperature (F) 71.7 71.7 72.7 74.2 75.8 77.1 77.3 77.3 76.6 76.3 75.1 73.2 74.9 Average Total Precipitation (in.) 1.93 1.42 1.81 2.41 4.38 2.70 3.32 3.82 5.43 5.50 6.28 3.07 42.07 Percent of possible observations for period of record. Max. Temp.: 80.9% Min. Temp.: 82.9% Precipitation: 93.2% . Figure 4. A wind rose from Station ST61022 showing the frequency f occurrence of wind speed and direction in 2014. (ERDC, USACE Research and Development Center wis.usace.army.mil/hindcasts.html?dmn=atlantic) 8 Figure 5. Tropical Cyclone Frequency in the Atlantic (National Weather Service) Figure 6. Tropical Storm and Hurricane Occurrences in the Atlantic (National Weather Service) 9 6.02 Landforms, Geology, Soils, and Historic Use GEOLOGY OF ST. CROIX The Virgin Islands are near the northeastern corner of the present Caribbean Plate, a relatively small trapezoidal-shaped plate which is moving eastward relative to the North and South American continents carried on the American plate. The arc of the Lesser Antilles is an active volcanic arc above a subduction zone in which the Atlantic oceanic crust of the American Plate is carried downward under the Caribbean Plate. The closest volcano to the Virgin Islands, which is still active, is Saba, about 160 km to the east. The island of St. Croix consists geologically of two predominant mountainous areas (the North side and the East End ranges), with a central sediment filled valley in between. The oldest rock underlying both ranges, and probably in the valley as well, is from the Cretaceous period, 80 million years ago. These sedimentary rocks which were formed from the erosion of volcanic ash and debris, and are beset with igneous intrusions, underwent a period of orogeny lifting them up from the ocean floor and forming two islands with a channel in between. Oligocene clay and mud was deposited in this channel forming what is known as the Jealousy formation. Next, tertiary limestone was deposited when this channel area became a lagoon encircled by coral reef. The limestone and marls that overlay the Jealousy formation are known as the Kingshill formation. After these formations were deposited, the area underwent another period of uplifting, the two islands became connected by the newly emergent filled-in area, and the island of St. Croix was formed. Since that time, geologic activity has been limited primarily to the erosion of sediments and the formation of ponds, beaches, reefs, and beach rock coast. Two large basins, the Virgin Islands Basin and the St. Croix Basin, separate St. Croix from the other Virgin Islands. Within the distance between St. Croix and St. Thomas, about 40 nautical miles, hydrographic charts show that the ascent from the sea floor north of St. Croix is as much as 70º. Frasetto and Northrop (1057) indicate that this northern topographic slope extends downward to the Virgin Islands Basin at a gradient up to 43º. There is an ascent of 13,656 feet within a horizontal distance of 25,800 feet, terminating with the steep north coast in the vicinity of Hams Bluff. The area has been described as the south side of the Anegada Trough and its related fault scarp (Taber 1922). Meyerhoff (1927) suggested that this block faulting took place during the late Pliocene or early Pleistocene, prior to which St. Croix was physically attached to the northern Virgin Islands. The southern and eastern portions of the St. Croix Platform, differing greatly from the northern and western regions, have a gradient of much less amplitude and therefore, a wider shelf area. The island of St. Croix has been subject to major periods of human disturbance. The introduction of intensive agriculture began during the early 18th century, the disturbance of the native flora and fauna were so severe that the biological communities present prior to 1700 cannot be specifically determined. The town of Christiansted has been developed since the 18th century and it harbor used for marine commerce. The shoreline has been filled and altered over time including the project site. 10 GEOLOGY OF THE GALLOWS BAY The site is relatively flat with elevations of 10ft and 11ft along Hospital Street and sloping gentle towards sea level along the shoreline. There is a shallow drainage across Parcel 8-b. HISTORIC USES OF THE PROPERTY The property has been developed since historic times. And the ruins of a historic building stand on Parcel 7-a to which the project will connect. In 1954 the building is still present and there are two piers extending from the property which had a rail system, the rails are still present today. Figure 7. 1954 Aerial Service Map of the Project Area 11 Figure 8. The site after Hurricane Hugo in 1989 ADVERSE SITE CONDITIONS The U.S. Virgin Islands lie in one of the most earthquake prone areas of the world, and are susceptible to ground shaking, earthquake-induced ground failures, surface fault ruptures and tsunamis (tidal waves) (Hays, 1984). The activity is mostly associated with large-scale tectonic activity or faulting, originating in the Anegada Trough to the northeast of the islands. The year 2024 marks the 157th anniversary of the last major earthquake in the islands. This quake, which occurred in 1867, had an identified intensity of VIII on the Modified Mercalli Scale. Earthquakes of this magnitude have generally been associated with epicentral ground accelerations of between 0.05 and 0.35 gravities. Over the last several years numerous minor tremors have been felt on the island. Many feel that this increased activity is associated with the volcanic eruptions that have been occurring to the southeast on the island of Montserrat. Below is the earthquake probability map for St. Croix produced by UVI Conservation Data Center. The hotel is in the high probability area for St. Croix. 12 Figure 9. Earthquake probability map, UVI Conservation Data Center IMPACT OF THE PROPOSED PROJECT The construction of the boutique hotel will not have an impact on the geology of the site, nor will the geology of the hotel affect the construction of the boutique hotel. 6.03 Drainage, Flooding and Erosion Control 6.03a Existing Drainage Patterns A hydrology study was conducted of the site by Buildtec (Appendix C). The site in its pre- development state primarily sheet flows towards the sea. There is a vaguely defined drainage which crosses Parcels 8-a and 8-b from mid parcel to the northeastern corner where it discharges into the sea. Figure 10. Existing drainage patterns 13 6.03b. Proposed Alterations to Drainage Patterns The property does not have the area available to create a detention pond, therefore a Stormtech system is being installed. It requires multiple inlets therefore the site will be divided up. 6.03c. Discuss the relationship of the project to the coastal floodplain The property lies in multiple 100-year flood zones as shown in the FEMA FIRM 72 of 94, April 16, 2007. The offshore area is within Flood Zones VE El 17, VE El 16, VE El 15, where the 100-year flooding is expected to be 17ft, 16ft and 15ft with velocity respectfully. And Flood Zones AE El 14 and AE El 13 where the 100-year flooding is expected to be to elevation14ft and 13ft respectively. These zones are found in bands moving landward from the coast as the elevation rises. Figure 11. Proposed drainage pattern - installation of Stormtech System 14 Figure 12. FIRM FEMA Map 72 of 94, April 16, 2007 6.03d. Peak stormwater flow calculations Prepared the peak stormwater flow calculations and the Hydrology Report is found in Appendix C. The peak stormwater flows pre-construction were determined to be 0.16 (ac-ft) and the peak flows post- construction were determined to be 0.28 (ac-ft). The proposed improvements result in a net increase in building and impervious areas over the existing condition which is evident in the pre vs. post runoff coefficient increasing from 75 to 91. The storage required for 1” over the entire site area = 0.10 ac-ft. The storage required from a pre vs. post analysis of the 2yr – 24-hour storm (0.29 ac-ft – 0.16 ac-ft) = 0.13 ac-ft. Based on the above results, the pre-post analysis for the 2yr – 24-hour storm controls. Given that the site has no available room for any retention areas, the required storage of 0.13 ac-ft will be accounted for by utilizing Stormtech Underground Storage Chambers. These chambers will be placed beneath the new gravel parking lot as illustrated on Plan Sheet C006 as found in Section 5.02. 6.03e. Existing stormwater disposal structures There are no existing stormwater disposal structures on Parcel 7-b, Parcel 8-a and Parcel 8-b. 6.03f. Proposed stormwater control facilities Based on the above results, the pre-post analysis for the 2yr – 24-hour storm controls. 15 Given that the site has no available room for any retention areas, the required storage of 0.13 ac-ft will be accounted for by utilizing Stormtech Underground Storage Chambers. These chambers will be placed beneath the new gravel parking lot as illustrated on Plan Sheet C006 as found in Section 5.02. The calculation of the required size on the chambers are found the Hydrology Report in Appendix C. There will be two buried chambers each capable of handling 0.0019ac-ft. 6.03g. Maintenance schedule for stormwater facilities The silt fences and construction entrance will be maintained throughout the construction as necessary. If deficiencies or damage is noted, they will be repaired immediately. 6.03h. Proposed method of land clearing Parcels 7-b, 8-a, and 8-b Hospital Street are almost completely cleared, only a small amount of vegetation will have to be removed along the southern property line. 6.03i. Provisions to preserve topsoil and limit site disturbance The property has been developed in the past and there are limited environmental resources remaining on the property. The property will be maintaining a 20ft set back from the shoreline. 6.03j. Presence and location of any critical area(s) and possible trouble spot(s) The proposed hotel is in the historically developed town of Christiansted and the development on Parcels 7-b and 8-b will connect to a historic building on 7-a Hospital Street which is currently permitted and is being renovated. The parcel has been developed in the past and there are only a few trees along the southern side of the property. The property is within the 100-year flood zone and the finished floor elevation will be an 8ft. 6.03k. Erosion and sediment control devices to be implemented Type III Silt fencing will be installed prior to any earth disturbance on the parcels and a construction entrance will be installed. 6.03l. Maintenance of erosion and sediment control devices The Stormtech System will be maintained as per the manufacturer’s guidelines. Storm drains will be cleaned out after all major rainstorms. 6.03m. Impacts of terrestrial and shoreline erosion The development of the property will increase the amount of impervious surface on the parcel, but a Stormtech system will be installed which will handle the increase runoff. The site will primarily be hard scape and therefore there will be limited terrestrial erosion. There will be no impact on shoreline erosion as the result of the project. 16 6.04 Fresh Water Resources There are no freshwater resources associated with Parcels 7-b, 8-a and 8-b Hospital Street. The property has no groundwater wells. The project will rely on the public potable water system. 6.05 Oceanography 6.05a Seabed Alteration The project involves no seabed alteration. 6.05B Tides and Currents The Virgin Islands coastal areas are not subject to significant tidal ranges or tidal currents. Due to the small size of the islands, the sea flows around the island causing an average tidal height of only a few inches and a maximum change of only a little over one foot. Only very narrow intertidal zones are found because of this lack of tidal amplitude and the steepness of the island rising out of the sea. Normal tidal ranges may be greatly exceeded during storm conditions, when a combination of lower barometric pressure at the ocean surface and storm winds amplifies the tidal crest. The tides on the north coast of St. Croix are primarily diurnal in nature. There is a sight secondary cycle (semi-diurnal), but this is almost indistinguishable and is reduced to very small ebbs and floods. The mean tides range from 0.8 feet to feet and the spring tidal ranges reach up to 1.3 feet. The tidal zone is visible on the rubble shoreline during periods of low tide. Figure 13. Tide Predictions Christiansted Harbor (https://tidesandcurrents.noaa.gov/noaatidepredictions.html) The surface currents throughout the Caribbean are driven by the North Equatorial Current which runs through the islands west northwest and then joins the Gulf Stream. These currents change very little from season to season with the currents originating more from the south during the summer months. Because of the shallowness of the Caribbean basin, it is less than 1000m, mainly surface water from the Atlantic flows through the islands. 17 The current movements in Christiansted Harbor have been well documented. Waves approaching from the northeast break on Long Reef and drive water into the harbor. The water mass then moves to the east and flows out of the harbor on either side of Round Reef. Out flow velocities have been measured between 5 and 18 cm/sec under normal conditions. Point Louise Augusta tends to protect the entrance channel into the harbor and allows for outward flow even during periods of high wave action. Figure 14 indicates current movements recorded by Nichols, et. al, in 1972. This diagram shows the complexity of the currents within the harbor. Currents during field work on the parcels were to the north related to the falling tide. Figure 14. Complex currents within Christiansted Harbor, Nichols, et.al, 1972 6.05C Waves The deep-water waves off St. Croix are primarily driven by the northeast trade winds, which blow most of the year. Waves average from 1 to 3 feet from the east, 42% of the time throughout the year. For 0.6% of the time, easterly waves reach 12 feet in height. The southeasterly swells, with waves one to twelve feet high, become significant in late summer and fall when the trade winds blow from the east or when tropical storms and hurricanes pass the islands at a distance to the south. During the winter months, long length, long period, northern swells develop to a height of 1 to 5 feet. The roughest sea conditions prevail between June and August, and the second highest seas occur from December through February. September through November is the calmest period for waves. Wave conditions are strongly affected by the shape of Scotch Bank located northeast of the harbor. The shelf orientation effectively precludes many wave conditions from affecting the harbor entrance and the harbor. Waves traveling through the Anegada Passage approach St. Croix at directions ranging from 020˚ to 060˚, but only those waves approaching from north of 030˚ effect the harbor entrance. Due to the position of the property is protected by not only by Long Reef but also by Protestant Cay, and the Gallows Bay Pier and is not affected by waves during 18 normal sea condition but can been affected by wind chop approaching through the channel east of Protestant Cay coming into Gallows Bay. Figure 15. Wave Rose for Station 61022 which is most applicable for the Gallows Bay area. (wis.usace.army.mil/hindcasts.html?dmn=atlantic) 19 6.05D Marine Water Quality The VI Ambient Water Quality Monitoring Program (VIAWQMP) has an ambient monitoring station 390ft. to the east. The data for monitoring station 41 is summarized in Table 2. A map of the VIAWQMP water quality monitoring stations in Christiansted Harbor is provided (Figure 16) showing its relationship with the project site. Table 2. Ambient Data from Station 41 Figure 16. Location of property in relationship with VIAWQMP Station #42. The offshore waters within Christiansted Harbor are classified as Class B, and the best usage of these waters is listed as the propagation of desirable species of marine life and for primary contact recreation (swimming, water skiing, etc.). The quality criteria include dissolved oxygen not less than 5.5 mg/l from other than natural conditions. The pH must not vary by more than 0.1 pH unit 20 from ambient, at no time shall the pH be less than 7.0 or greater than 8.3. Bacteria (fecal coliform) cannot exceed 70 per ml., and turbidity should not exceed such that a secchi disc is not visible at minimum depth of one meter. IMPACT OF PROPOSED PROJECT The project proposes no in-water work. The project will implement BMPs during construction to minimize the introduction of sediment laden runoff into the surrounding marine waters. Once complete the site will install a Stormtech Storm water system which will help control stormwater coming of the site. 6.06 Marine Resources and Habitat Assessment The project involves no in-water work. METHODS In-water surveys were conducted during the month of March (offshore) and June 2024 (inshore). Surveys were conducted on SCUBA. Figure 17 depicts the benthic habitats which occur in the area as shown on the Benthic Habitat Map prepared by NOS, NOAA. The NOS habitat map shows the project area as seagrass 10-30% offshore and seagrass continuous along the shoreline. There is colonization by the seagrass Thalassia testudinum which is intermixed with Halophila stipulacea in the deeper areas of the bay and there is scattered sparse seagrass scattered along the shoreline, also intermixed with H. stipulacea. There are scattered rocks and cobble with some coral colonization in the area, mostly Porites porites and Porites astreoides with a few Siderastrea siderea and S. radians. 21 Figure 17. Tile #5 Benthic Habitat Map prepared by NOS, NOAA The offshore areas were surveyed in March of 2024 as part of benthic surveys for the USACE to determine the potential required mitigation for dredging. Those surveys found the offshore areas dominated by the invasive seavine H. stipulacea. 22 Figure 18. Offshore Benthic Habitats, the project area is highlighted with a yellow star. 23 FINDINGS Like most port area H. stipulacea has become the dominant colonizer. There is some macro-algae colonization and a small amount of Thalassia testudinum remaining in the bay. There are large amounts of drift algae within the deeper bay, primarily drift Dictyota. There is scattered debris include ropes, anchors, tires, branches, cans, bottles and boat debris. Within the drift algae there is Laurencia, Hypnea sp. and Enteromorpha sp. The nearshore is a mix of cobble and soft bottom and again is a mixture of H. stipulacea and macro-algae, including Caulerpa, Udotea, Penicillus capitatus, Avrainvillea, Laurencia, and Dictyota. Several of the larger rocks, rail debris and cobbles had small coral colonization including Porites porites, Pseudodiploria strigosa, Porites astreoides Siderastrea siderea and S. radians colonies. Several juvenile lobsters (Panularis argus) were seen around the debris and feather duster worms (Sabellastarte magnifica, Bispira sp.) were abundant. Offshore is dominated by H. stipulacea with scattered macro-algae and some very sparse T. testudinum. The near shore is a mix of macro-algae, and H. stipulacea. IMPACT OF DEVELOPMENT The project involves no in-water work. The project will be implementing sedimentation and erosion control and will be implementing long-term stormwater control, therefore there will be no 24 impact on offshore resources. 6.07 Terrestrial Resources) Parcels 7-b, 8-a and 8-b are partially clear and are being used to store materials for the construction on Parcel 7-a. Much of the vegetative grow is secondary growth including tan tan (Leucaena leucocephala), papaya (Carica papaya), bay-bean vine (Canavillea rosa), coral vine (Antigonon leptopus), guinea grass (Urochloa maxima) and casha (Acacia tortuosa). There are a few larger genips (Melicoccus bijugatus), Tibet (Albizia lebbeck) some seaside maho (Thespesia populnea) along the coastline, Christmas palms (Adonidia merrillii), guinea grass (Urochloa maxima), a flamboyant (Delonix regia), white manjack (Cordia alba), West Indian almond (Terminalia catappa), and coconut palm (Cocos nucifera). Most of the vegetation on the site will be removed accept for the trees immediately along the shoreline. 6.08 Wetlands The U.S. Army Corps of Engineers defines wetlands as "those areas that are periodically inundated or saturated by surface or groundwater at a frequency and duration sufficient to support and under normal circumstances do support, a prevalence of vegetation typically adapted for life in saturated soil conditions. Wetlands generally include swamps, bogs, marshes and similar areas." (U.S. Army Corps of Engineers, 1986). There are no terrestrial wetlands in the project area. 6.09 Rare and Endangered Species Four rare or endangered sea turtle species: hawksbill turtles (Eretmochelys imbricata), green turtles (Chelonia mydas), loggerhead turtle (Caretta caretta) and leatherback turtles (Ermochelys coriacea), occur in the offshore area. Green turtles, and hawksbills turtles have been seen repeatedly in the area over the last 35 years. No ESA coral species were noted within the project area. These corals do occur on the barrier reef well to the north and on hardbottom areas at the mouth of the harbor. The Nassau Grouper, Epinephelus striatus was seen during a previous survey of the area but not during this survey. Queen conch (Aiger gigas) have been seen in the bay in the past. None of these ESA listed species will be impacted by the project. 6.10 Air Quality All of St. Croix is designated Class II by the Environmental Protection Agency in compliance 25 with National Ambient Air Quality Standards. In Class II air quality regions, the following air pollutants are regulated: open burning, visible air contaminants, particulate matter emissions, volatile petroleum products, sulfur compounds, and internal combustion engine exhaust (Virgin Islands Code Rules and Regulations). There will be minor increases in emissions during construction due to the use of heavy machinery. Once the construction is complete air emissions will return to ambient. 7.00 IMPACTS ON THE HUMAN ENVIRONMENT 7.01 Land and Water Use Plans The parcel is appropriately zoned for the proposed use B-1. 7.02 Visual Impact The development of the Boutique Hotel will greatly improve the visual character of the area. The blighted property has been in ruin for more than 30 years and the revitialzation of the site will greatly improve the asthetics of the area. 7.0 3 Impact on Public Services 7.03a Water The Boutique Hotel will be connected to the public water supply. 7.03b Sewage Treatment and Disposal The Boutique Hotel will be connected to the public sewerage system. 7.03c Solid Waste Disposal Debris collected prior and during to construction will be disposed of at the Anguilla Landfill. Proper permits for the disposal of the waste will be obtained by the contractor. Once complete, the hotel will rely on a private hauler to dispose of waste generated by the boutique hotel. 7.03d Roads, Traffic and Parking The hotel will have an impact on local traffic while bringing materials to the site and for worker access. This project will have hotel rooms, shops and a restaurant/café and will result in an increase in traffic to the area. The site will have 33 parking spaces which include 2 handicapped spaced. The parking sites should be adequate for the uses at the site. 7.03e Electricity The electricity will be supplied by the public service (VI WAPA). 26 7.03f Schools The construction of the hotel will not impact on public or private schools the construction workers and hotel works will be drawn through the local work force. 7.03g Fire and Police Protection The construction should have a minimal impact on fire and police protection. Once complete the hotel will rely on the local fire and police protection. 7.03h Health The construction and operation of the hotel should not increase the use of the public health facilities as that the workers will be come from the local work force. If guest have a medical emergency, they will utilize the public emergency facilities or the small private clinics. For more long-term medical care they will return home for care. 7.04 Social Impacts The construction of the hotel should have a positive social impact. Once complete the Boutique hotel will improve a blighted area of downtown Christiansted and will improve the atmosphere of downtown Christiansted and promote economic growth of downtown as described below. 7.05 Economic Impact A Financial and Economic Impact Study was made for the 66-Room Hotel with a 10,000 sq ft. Gym and Restaurant on Hospital Street in Christiansted. The financial and economic impact study evaluated the projected economic contributions of a new boutique hotel, equipped with a 10,000 sq ft gym and restaurant, set to open in 2028. The establishment is projected to employ approximately 45 individuals and contribute significantly to the local economy through employment, operational spending, and tax revenue. Employment and Wages The hotel will provide approximately 45 jobs by 2028, ranging from management positions to front-line service roles in hospitality, fitness, and food and beverage sectors. The anticipated annual payroll expenditure is approximately $1,938,000. This substantial wage investment will support local families and contribute to the overall economic stability of the community. Employees will benefit from stable employment opportunities and comprehensive job. training, enhancing local workforce skills and reducing unemployment rates. Hotel Room Tax Contributions By 2028, the hotel is projected to pay approximately $627,135 in hotel room taxes. This significant tax revenue will contribute to local government funds, which can be used for 27 community development projects, infrastructure improvements, and public services. The hotel room tax revenue is a crucial element of the fiscal benefits the hotel brings to the local economy, ensuring sustainable community growth and enhanced public amenities. Operating Expenses and Local Vendor Support The hotel is expected to spend around $1,668,425 annually on operating expenses with local. vendors by 2028. This expenditure includes purchasing supplies, services, and maintenance. required to keep the hotel, gym, and restaurant running efficiently. This consistent financial injection into local businesses will stimulate the local economy, fostering the growth of small. and medium enterprises (SMEs), and creating a multiplier effect as these businesses, in turn, invest back into the community. Economic Revitalization The hotel's development will significantly contribute to the revitalization of the surrounding. area. The establishment of a modern, full-service hotel, along with a state-of-the-art gym and a high-quality restaurant, will attract tourists and business travelers, increasing local tourism. and business activity. The influx of visitors will lead to higher spending in the local economy, benefiting retail stores, entertainment venues, and other service-oriented businesses. Long-term Benefits The projected financial contributions in the form of wages, taxes, and operating expenses highlight the hotel's role as a key economic driver. Over the years, the cumulative effect of these financial flows will result in sustained economic growth. The hotel’s presence will likely lead to additional investments in the area, spurring further economic development and improving the overall quality of life for residents. 7.06 Impacts on Historical and Archeological Resources There is a historic building on Parcel 7-a to which this project will be connected. The applicant worked with the State Historic Preservation Office (SHPO) and VI Historic Preservation Commission (VIHPC). A letter has been transmitted to SHPO requesting a clearance for Parcel 7-b, 8-a and 8-b Hospital Street. 7.07 Recreational Use The Parcels are not used for recreational activities. The construction of this hotel will not impact and recreational activities. Shoreline access will be maintained. 7.07 Waste Disposal The debris collected prior to the construction will be disposed of at the Anguilla Landfill. Solid Waste will be collected in a waste bin and disposed of by a licensed private hauler. 28 7.08 Accidental Spills The project is for the construction of a boutique hotel all equipped will be kept in good condition and no fueling will be allowed on site. If any spills occur the soil will be cleaned up and disposed of properly. 7.08 Potential Adverse Effects Which Cannot Be Avoided The site is site has been completely disturbed in the past. There are minimal resources in the area and therefore there is no significant impact to any resources. 8.00 Mitigation Plans The project will have a negligible impact on the environmental and will have no mitigation is proposed. 9.00 Alternatives to Proposed Action The project could not be built, and the site would remain in blight. 10.00 Relationship Between Short Term and Long-Term Uses of Man’s Environment The redevelopment of a previously impacted site is the best use of the environment rather than develop an undeveloped greenfield site. 11.00 Literature Cited Bowden, M.J. et. al., 1969. Climate, water balance and climatic change in the north-west Virgin Islands. Caribbean Research Institute, CVI, St. Thomas, Virgin Islands. Bucher, K. E., D.S. Littler, M. M. Littler, J. N. Norris. 1989. Marine Plants of the Caribbean A Field Guide from Florida to Brazil. Smithsonian Institution Press, Washington, D.C. Donnelly, T., et al. 1971. Chemical evolution of the igneous rocks of the Eastern West Indies. In: Donnely, t. (ed.) Caribbean geophysical, tectonic and petrologic studies. Geol. Soc. Amer. Mem. 130:181-224. Gill, Ivan P. and D.K. Hubbard. 1986. Subsurface Geology of the St. Croix Carbonate Rock System, Technical Report No. 26, Caribbean Research Institute, College of the Virgin Islands, 71 pp. Humann, Paul. 1992. Reef Creature Identification. New World Publications, Inc., Jacksonville, FL. 29 Humann, Paul. 1993. Reef Coral Identification. New World Publications, Inc., Jacksonville, FL. Humann, Paul. 1989. Reef Fish Identification. New World Publications, Inc., Jacksonville, FL. Island Resources Foundation. 1977. Marine environments of the Virgin Islands. Technical Supplement No.1 1976. Prepared for the Virgin Islands Planning Office. 30 BIOIMPACT, INC. QUALIFICATION STATEMENT P.O. BOX 132 KINGSHILL, ST. CROIX U.S. VIRGIN ISLANDS 00851 PHONE NUMBER: (340) 690-8445 FAX NUMBER: (340) 718-3800 EMAIL: bioimpact@islands.vi,bioimpact.islands.vi@gmail.com QUALIFICATION STATEMENT Bioimpact, Inc. is a Virgin Islands corporation that has been licensed to do business in the USVI since 1986. Bioimpact, Inc. is qualified to conduct and prepare both terrestrial and marine Environmental Assessment Reports required by the U.S. Virgin Islands Department of Planning and Natural Resources (DPNR), Division of Coastal Zone Management (CZM), and the U.S. Army Corps of Engineers (USACE). Bioimpact, Inc. has wetland delineators certified by the National Wetland Science Training Cooperative to establish wetland jurisdictional limits for the USACE. Bioimpact, Inc. is experienced in the creation and implementation of wetland mitigation programs. Bioimpact, Inc. is experienced in developing and implementing marine water quality monitoring programs and long-term monitoring of the benthic environment. Bioimpact, Inc. has water samplers and analysts certified by the DPNR Division of Environmental Protection (DEP). Bioimpact, Inc. has successfully designed and implemented large scale coral and seagrass transplant programs. Bioimpact, Inc. is experienced in cable landfall studies and the establishment of routes for undersea cables and monitoring of cable installations to minimize impact. Bioimpact, Inc. is experienced in conducting endangered species surveys including corals listed under the Endangered Species Act (ESA) and terrestrial flora and fauna species surveys. Bioimpact, Inc. is experienced in preparing Biological Assessments for the National Marine Fisheries Service (NMFS) and the U.S. Fish and Wildlife Service (FWS). APPENDIX A BIOIMPACT, INC. QUALIFICATION STATEMENT Bioimpact, Inc. is experienced in the transplant and monitoring of ESA-listed corals, as authorized under “Take Permits” from NMFS. Bioimpact, Inc. is experienced in preparing Environmental Assessments for federal permitting and for federal issuance of a Finding of No Significant Impact (FONSI). Bioimpact, Inc. is experienced in conducting Phase I Environmental Site Assessments as set forth in the ASTM International Standard Practice Designation E1527-21 and All Appropriate Inquires and Phase II Environmental Site Assessments as set for in ASTM E1903-11. Bioimpact, Inc. is experienced in the development and implementation of sampling plans to detect and delineation hazardous materials and petroleum products. Bioimpact, Inc. is experienced in conducting deep water remotely operated vehicle (ROV) surveys up to 1,250 feet and has all the necessary equipment to undertake these studies. Bioimpact, Inc. has conducted environmental studies in the U.S. Virgin Islands, Puerto Rico, British Virgin Islands, as well as other parts of the Caribbean and in the Florida Keys. BIOIMPACT, INC. QUALIFICATION STATEMENT PARTIAL JOB LIST Updated March 31, 2022 MONITORING LARGE SCALE PROGRAMS 2021 – Present Watershed and Stormwater Sampling on St. Croix and St. Thomas as a Subcontractor to Watershed Consulting Associates LLC. 2021 – Present Development and Implementation of a Water Quality and Environmental Monitoring Plan for Construction of a Private Dock in Chocolate Hole, St. John. 2021 – Present Development and Implementation of a Water Quality Monitoring Plan for the Reconstruction of the Marriott Frenchman’s Reef Dock and Minor Dredging. 2020 – Present Monitoring for the Virgin Islands Tree Boa at the Donoe Housing Redevelopment Site. 2019 – Present Development and Implementation of the Water Quality and Environmental Monitoring Plan for the Installation of a Single Point Mooring at Limetree Marine Terminals, St. Croix. 2013 – Present U.S. Virgin Islands Ambient Water Quality Monitoring Program, Sampling for St. Croix. 2018 – 2021 Development and Implementation of the Water Quality and Environmental Monitoring Plan for the Construction of the Veterans Drive Project on St. Thomas for the U.S. Virgin Islands Department of Public Works (VIDPW). 2016 Development and Implementation of the Water Quality Monitoring Plan for the West Indian Company Limited (WICO) Emergency Bulkhead Replacement on St. Thomas. 2014 – 2018 Development and Implementation of the Environmental Monitoring Plans for the Conversion of U.S. Virgin Islands Water and Power Authority (VIWAPA) to Liquid Petroleum Gas (LPG) for Vitol on St. Croix and St. Thomas. 2014 – 2018 Development and Implementation of the Environmental Monitoring Plans for the Creation of a Dolphin Exhibit at Coral World (VI), Inc. on St. Thomas. 2013 – 2018 Development and Implementation of the Water Quality and Environmental Monitoring Related to the Dredging of the Crown Bay Marine Terminal and Turning Basin on St. Thomas. 2013 – Present Development and Implementation of the Monitoring Plans for the VIDPW’s Improvements to Veterans Drive on St. Thomas. BIOIMPACT, INC. QUALIFICATION STATEMENT 2013 – 2018 Development and Implementation of the Monitoring Plans for the U.S. Virgin Islands Port Authority’s (VIPA) Maintenance Dredging of Crown Bay Marina on St. Thomas. 2013 – 2018 Development and Implementation of Monitoring Plans for the Westin Resort’s Dock Permit and Improvements of Stormwater Drainage on St. John. 2013 – 2015 Implementation and Monitoring of a Wetland Created as Mitigation for the Development of the U.S. Virgin Islands Waste Management Authority’s (VIWMA) Transfer Station on St. Croix. 2012 – 2018 Development and Implementation of the Monitoring Plans for the Virgin Islands Next Generation Network’s (viNGN) Fiber Optic Cable System in the USVI. 2011 – 2019 Development and Implementation of a Water Quality and Environmental Monitoring Plan to Assess Impacts of an Increase in Discharge from the Marriott Frenchman’s Reef Hotel on St. Thomas. 2010 – 2012 Development of the Water Quality and Environmental Monitoring Program for the Development of Thatch Cay with a Special Emphasis on ESA-listed Corals. 2009 – 2015 Environmental Monitoring for the Development of Oil Nut Bay and the Yacht Club Costa Smeralda (YCCS) for Victor International on Virgin Gorda, British Virgin Islands (BVI). 2009 – 2010 Development and Implementation of a Water Quality Monitoring Plan for the Construction of the Dock at Frenchman’s Cove for Marriott Vacation Club, Inc on St. Thomas. 2009 Establishment of the Baseline for the Dredging of Charlotte Amalie Harbor and Entrance Channel, and the and the Disposal of Dredged Materials in the Historic Dredging Hole in Lindbergh Bay, St. Thomas for WICO. 2008 – 2009 Environmental Monitoring of the Development of Scrub Island in the BVI for Mainsail Lodging and Development. 2007 – 2010 Water Quality Monitoring for the Development of the Calabash Boom Affordable Housing Complex for Reliance Housing in Estate Calabash Boom on St. John. 2007 – 2009 Water Quality and Environmental Monitoring for Flamboyant Real Estate of a Subdivision of Seventy-seven Acres in Hansen Bay, St. John. 2006 – 2008 Water Quality Monitoring for the Dredging of a Sand Channel in St. Croix for VIWAPA. BIOIMPACT, INC. QUALIFICATION STATEMENT 2006 – 2007 Water Quality Monitoring for the Renovations of the Ritz-Carlton Hotel on St. Thomas for the Ritz-Carlton. 2006 – 2010 Environmental Monitoring for the Placement of Undersea Cables at the Global Crossing Cable Station in St. Croix for Global Crossing Network, Alcatel, and Tyco Electronics Subsea Communications (now SubCom). 2005 – 2007 Water Quality Monitoring for the Dredging of Crown Bay, St. Thomas for VIPA. 2005 – 2006 Water Quality and Environmental Monitoring for Improvements to the Redhook Marine Terminal for VIPA. 2004 – 2011 Water Quality and Environmental Monitoring for the Construction of the Pond Bay Resort for First American Development Group on St. John. 2004 Benthic Habitat Survey of Crown Bay and Gregerie Channel to Supplement the USACE Feasibility Report for VIPA. 2003 – 2006 Water Quality Monitoring for the Construction of the Enighed Pond Marine Terminal on St. John for VIPA. 2003 – 2004 Water Quality Monitoring for the Development of the Crown Bay Marine Terminal on St. Thomas for VIPA. 2002 – 2008 Water Quality and Environmental Monitoring for the Development of Marine Amenities on the Island of Lovango for the Joseph Markus Trust. 2002 – 2005 Water Quality Monitoring for the Improvements to the Gallows Bay Marine Terminal on St. Croix for VIPA. 2001 – 2008 Coral Transplant Monitoring for the Enighed Pond Marine Terminal on St. John for VIPA. 2001 – 2006 Coral Transplant Monitoring for the Mangrove Lagoon Sewage Treatment Plant Outfall on St. Thomas for VIDPW. 2001 – 2002 Water Quality Monitoring for Improvements to the Tropical Shipping Dock in Crown Bay, St. Thomas for Meisner Marine. 2000 – 2006 Seagrass Transplant Monitoring of the Seagrass Transplanted for the Dredging of Charlotte Amalie Harbor on St. Thomas for VIPA. 2000 – 2003 Water Quality Monitoring for the Dredging of Charlotte Amalie Harbor on St. Thomas for VIPA. BIOIMPACT, INC. QUALIFICATION STATEMENT 1999 – 2006 Water Quality Monitoring for Repairs to the Frederiksted Pier on St. Croix for VIPA. 1999 – 2002 Water Quality Monitoring for the Construction of Cable Stations at Estate Northside on St. Croix for Global Crossings. 1997 – 2005 Development of a Water Quality Monitoring Program for the Construction of the Christiansted Boardwalk on St. Croix Prepared for the Government of the U.S. Virgin Islands. 1997 – 2005 Wetland Monitoring of the Tren Urbano, Puerto Rico (PR) 5 and PR 22 Mitigation Sites under Subcontract to Nutter & Associates, Inc. for the Puerto Rico Highway Authority. 1997 – 2002 Wetland Monitoring of the Airport Mitigation Site at the Henry E. Rohlsen Airport on St. Croix for VIPA. 1997 – 2002 Wetland Monitoring for the Fairplains Mitigation Site at the Henry E. Rohlsen Airport on St. Croix for VIPA. 1996 – 1998 Water Quality Monitoring for the Expansion of the Molasses Pier at the Third Port on St. Croix for the VIPA. 1996 Development and Implementation of a Water Quality Monitoring Program for the Expansion of, and Improvements to, the Redhook Marine Terminal on St. Thomas for VIPA. 1996 Development and Implementation of a Water Quality Monitoring Program for the Creation of the Enighed Pond Marine Terminal on St. John Prepared for the Maguire Group, Inc. and VIPA. 1995 Water Quality Monitoring for the Construction of the AT&T Cable Landing Facility in Estate Northside, St. Croix for AT&T Submarine Systems. 1992 – 1994 Development and Implementation of a Water Quality Monitoring Program for the Reconstruction of the Frederiksted Pier on St. Croix for VIPA. 1992 – 1993 Conducted a Baseline Assessment and Developed a Long-term Monitoring Plan for VIWAPA of the Benthic Community Potentially Impacted the Outfall from the Richmond Power Plant on St. Croix 1992 – 1993 Development and Implementation of a Monitoring Plan to Study Algal Blooms within the Alumina Cooling Pond Discharge and Strategies to Alleviate Runoff for V.I. Alumina Corporation LLC (VIALCO) on St. Croix. BIOIMPACT, INC. QUALIFICATION STATEMENT 1990 – 1992 Water Quality Monitoring for Dredging Christiansted Harbor on St. Croix for VIPA. 1989 Development and Implementation of a Turtle Monitoring Program for Manchineel Beach on St. Croix. BIOIMPACT, INC. QUALIFICATION STATEMENT LARGE SCALE MITIGATION PROGRAMS 2021 – Present Removal and Relocation of 209 Corals for the U.S. Coast Guard Aids to Navigation (ATON) Replacement Project on St. Croix and Routine Monitoring of a Subset of Corals. 2020 – Present Development and Implementation of the Compensatory Mitigation Plan for the Transplant of 1,700 corals, the Repair of 500 Corals of Opportunity, and the Outplanting of 3,000 ESA-listed corals for Limetree Bay Terminal’s Single Point Mooring on St. Croix. 2018 – Present Development and Implementation of a Compensatory Mitigation Plan for the Relocation of 1.25 Acres of Seagrass and 631 Corals from the Impact Footprint of the Veterans Drive Project on St. Thomas, and the Repair of Damaged Corals on Triangle Reef for VIDPW. 2016 – 2020 Development and Implementation of a 190-Coral Transplant for the Stabilization of the Seawater Intake Line for the Marriott Frenchman’s Reef Hotel on St. Thomas. 2016 – 2020 Development and Implementation of a Coral Transplant to Minimize the Impacts of Construction for LPG Improvements at VIWAPA Facilities on St. Croix and St. Thomas. 2015 – 2021 Development and Implementation of the Mitigation Plan for the Relocation of 10,000 Corals Off the WICO Bulkhead in Havensight for WICO on St. Thomas. 2014 – Present Development and Implementation of a Coral and Seagrass Transplant for Coral World (VI), Inc. in Association with the Development of the Dolphin Exhibit on St. Thomas; 250 Corals were Transplanted and More Than 500 Corals were Repaired after the 2017 North Atlantic Hurricane Season. 2014 – 2019 Development and Implementation of the Mitigation Plans for VIPA’s Maintenance Dredging of Crown Bay Marina on St. Thomas. 2013 – 2018 Development and Implementation of the Mitigation Plans for the Westin Resort’s Dock Permit and Improvements of Stormwater Drainage on St. John. 2013 – 2015 Creation of a Herbaceous Wetland for VIWMA as Mitigation for the Construction of the Transfer Station at the Anguilla Landfill on St. Croix. 2009 Transplantation of 300 Corals for Victor International Coral for Impacts Associated with the Development of an Access Ramp and Dock at Oil Nut Bay in the BVI. BIOIMPACT, INC. QUALIFICATION STATEMENT 2008 – 2009 Transplantation of 3,000 Corals for Mainsail Lodging and Development for Impacts Associated with the Development of the Scrub Island Resort in the BVI. 2006 – 2011 Planting of 1 Acre of Mangrove Wetland for VIDPW as Mitigation for the Construction of the Mangrove Lagoon Sewage Treatment Plant on St. Thomas. 2003 – 2008 Planting of 2.8 Acres of Mangrove Wetland for VIPA as Compensatory Mitigation for the construction of the Enighed Pond Terminal on St. John. 2003 – 2008 Removal and Relocation of 3,000 Corals Outside the Area of Impact for the Development of the Crown Bay Marine Terminal on St. Thomas for VIPA. 2002 – 2007 Development and Implementation of the Mitigation Plans for VIPA’s Dredging of Crown Bay Marine Terminal and Turning Basin on St. Thomas. 2002 – 2007 Transplantation of 50,000 Corals for VIPA Outside the Area of Impact for the Enighed Pond Marine Terminal Project on St. John. 2002 Creation of Artificial Coral Reefs and Acropora spp. Thickets for Joseph Markus Trust as Mitigation for the Construction of a Barge Landing Facility on the Island of Lovango. 2000 – 2005 Transplantation of 2 Acres of Seagrass for VIPA to an Area Outside the Dredging Footprint of the Charlotte Amalie Harbor on St. Thomas. 2000 – 2001 Transplantation of 7,000 Corals for VIDPW Outside of the Area of Impact for the Placement of the Mangrove Lagoon Sewage Treatment Plant Outfall on St. Thomas. 1999 – 2004 Transplantation of 300 Corals for VIPA Outside the Area of Impact for the Mooring Improvements to the Frederiksted Pier on St. Croix. 1997 – 2003 Planting of ½ Acres of Mangroves for VIPA/VIDPW as a Mitigation Project for the Construction of the Molasses Dock Road on St. Croix. 1997 – 2002 Creation of a 1-Acre Herbaceous Wetland for VIPA as Mitigation for Henry E. Rohlsen Airport Construction on St. Croix. 1997 – 2002 Development of a Mitigation Plan for VIPA for the Creation of a 16,000-square Foot Wetland at Manning Bay to Address the Impact Incurred in Fairplains Gut on St. Croix. 1996 Development of a Mitigation Plan for VIPA for the Creation of 4.1 Acres of Wetland as Mitigation of the South Shore Power Plant, Third Port on St. Croix. BIOIMPACT, INC. QUALIFICATION STATEMENT 1994 Development of a Mitigation Plan for Green Cay Resort for the 12 Acres of Wetland Impacted by the Construction of the Resort on St. Croix. BIOIMPACT, INC. QUALIFICATION STATEMENT ENVIRONMENTAL PLANNING AND STUDIES A Foundational Blueprint For The Development Of A Comprehensive Pelagic Sargassum Management Plan For The United States Virgin Islands. The U.S. Virgin Islands Department of Planning and Natural Resources Division of Coastal Zone Management. (2023) Ecosystem Risk Assessment Framework for the Caribbean Marine Fisheries Management Council (in progress). ENVIRONMENTAL ASSESSMENT REPORTS 2020– PRESENT Water quality, monitoring and/or compensatory mitigation plans were developed to supplement most of the environmental assessment reports listed. Water Island Development, Water Island Development Corporation, Environmental Assessment Report for the Development of a Resort and Marina, Water Island Villa Olga Shoreline Revetment, Olga’s Fancy, Environmental Assessment Report for the Restoration and Revetment of the Shoreline, St. Thomas Expansion of Yacht Haven Grande Marina, IGY, Environmental Assessment Report for the Expansion of the Existing Yacht Haven Grande Marina, St. Thomas Sapphire Bay Marina Dredging and Installation of Sargassum Barriers and Shoreline Revetment, SBMCOA, LLC, Environmental Assessment Report for Dredging of the Marina, Revetment of the Shoreline, and Installation of Sargassum Barriers, St. Thomas Ritz-Carlton Shoreline Preservation Plan, Ritz-Carlton Club, Assessment Report for the Installation of Sargassum Barriers and Geotubes, St. Thomas St. Croix Yacht Club, St. Croix Yacht Club, Environmental Assessment Report to Permit the Existing Facility and to Allow for Repair and Maintenance, St. Croix Container Port, Golden Grove and Midland Road Underground Projects, V.I. Water and Power Authority, Environmental Assessment Report for the Installation of Underground Power Systems to Improve Resiliency, St. Croix. Flamingo Bay Eco-Resort, BBK Development, Environmental Assessment Report for the Development of the Small Eco-Resort, Water Island. Pearl Landfill and Recycling Facility, V.I. Waste Management Authority, Environmental BIOIMPACT, INC. QUALIFICATION STATEMENT Assessment Report for the Development of a Solid Waste Facility in Estate Pearl, St. Croix. Charlotte Amalie Harbor Dredging, V.I. Port Authority, Environmental Assessment Report and HUD Environmental Assessment for the Dredging of the Charlotte Amalie Harbor Channel, Turning Basin, and WICO Inner Berth, St. Thomas. Crown Bay and East Gregory Channel Dredging, V.I. Port Authority, Environmental Assessment Report and HUD Environmental Assessment for the Dredging of Portions of Crown Bay and East Gregory Channel, St. Thomas. Frenchman’s Reef and Morningstar, Beach Enhancement and Shoreline Stabilization, CREF3 (Formerly Diamond Rock), Environmental Assessment Report for the Revetement of the Shoreline, the Installation of Offshore Breakwaters and Sand Renourishment, St. Thomas. Emergency Response Dock and Shoreline Revetment at the Harley Plant, V.I. Water and Power Authority, Environmental Assessment Report for the Construction of an Emergency Fuel Spill Response Dock and the Revetment of the Eroded Shoreline, St. Thomas. Consolidated Permit for Randolph E. Harley Power Plant, V.I. Water and Power Authority, Environmental Assessment Report to Bring All Components into Compliance including those Pre-dating CZM, St. Thomas. Underwater Memorial Park, Virgin Islands Underwater Memorial Park, Environmental Assessment Report for the Creation of an Underwater Park to Intern Ashes into Reef Building Structures, St. Thomas. Mooring and Operation of a Bar and Restaurant in the Pillsbury Sound, Cowgirl Bebop, LLP, Environmental Assessment Report for the Installation of Moorings for Vessels and Patrons in the Pillsbury Sound, St. John. Cruz Bay Underground, V.I. Water and Power Authority, Environmental Assessment Report for the Installation of an Underground Power Cable System in Cruz Bay Feeder 7E, St. John. Tropical Marine Expansion, Tropical Marine, Environmental Assessment Report to Combine Docks at Mangrove Marine and Off Plot 28 and the Expansion of the Existing Dock, St. Thomas. Limetree Resort, Wyndham Bluebeard’s Beach Club, Environmental Assessment Report for the Renovation and Expansion of the Existing Limetree Resort, St. Thomas. Repair to Cruz Bay Visitor Center, Docks, and Surrounding Grounds Impacted by Hurricanes Irma and Maria, Croft Engineering/National Park Service, Environmental Assessment Report for Dredging the Basin and Repairs to the Bulkhead and Renovation and Upgrades to the Existing Visitor Center, St. John. BIOIMPACT, INC. QUALIFICATION STATEMENT Latitude 18 Marina, Jack Rock EA-C LLC, Environmental Assessment Report for the Development of a Marina and Management of a Mooring Field and Dry Storage for Vessels, St. Thomas. Green Cay Marina, St. Croix Financial Center, Environmental Assessment Report for the Expansion of the Existing Marina, Maintenance Dredging, and Beach and Shoreline Improvements, St. Croix. King Christian Dock, USVI Opportunity Fund LLC, Environmental Assessment Report for the Reconstruction and Expansion of a Hurricane-Damaged Dock, St. Croix. Renovations and Expansion of an Existing Dock, Inter-Island Ferry Service, Environmental Assessment Report for the Expansion and Extension of an Existing Dock to Better Accommodate Vessel Dockage, St. Thomas. Repair of a Hurricane Damaged Dock, Margaritaville, Environmental Assessment Report for the Reconstruction of the Damaged Dock (modified to include a reverse osmosis line extension), St. Thomas. Boat Building Facility and Dock, Gold Coast Yacht, Inc., Environmental Assessment Report for a Boat Building Warehouse and a Launch and Outfitting Dock, St. Croix. Turquoise Bay Resort, VIPM LLC, Environmental Assessment Report for a Glamping Resort and Restaurant, St. Croix. Christiansted National Historic Site Existing Wharf Replacement, HDR, Inc. and National Park Service, Environmental Assessment Report for the Replacement of the Failing Sheet Pile Wall and Bulkhead (and Acoustic Monitoring Plans), St. Croix. Lovango Cay Beach Club and Resort, Lovango Island Holdings LLP, Environmental Assessment Report to Permit the Development of a Beach Club and Resort and Mooring Installation, Lovango Island. Wave Attenuation System, LSJ LLC, Environmental Assessment Report for the Installation of Wave Attenuation Systems, Little St. James. Installation of Access Docks, and Barge Landing Facility, Great St. James, Great St. Jim LLC. Environmental Assessment Report for the Development of a New Dock, the Renovation of an Existing Dock, and the Construction of a Barge Landing, Great St. James. Installation of a Single Point Mooring at the Limetree Bay Terminal on St. Croix, Limetree Bay Terminals LLC, Environmental Assessment Report for the Installation of an Undersea Pipeline, Pipeline End Manifold (PLEM), and Buoy System at a Depth of 650 Feet, St. Croix. BIOIMPACT, INC. QUALIFICATION STATEMENT St. Croix Sports Complex, Coastal Systems, Environmental Assessment Report for the Construction of the Paul. E. Joseph Stadium, Wetland Delineations, and Endangered Terrestrial and Marine Species Assessments (and Development of a Sea Turtle Lighting Mitigation Plan), St. Croix. Installation of a Submarine Cable System, V.I. Water and Power Authority, Environmental Assessment Report for Submarine Cable Routing and Beach Landfall, St. Thomas. Maintenance Dredging of Krause Lagoon Channel, V.I. Port Authority, Environmental Assessment Report for the Dredging of the Cross-Channel into the Container Port and Molasses Dock, St. Croix. Installation of New Reverse Osmosis Discharge and Intake Line, Westin Resort, Environmental Assessment Report for the Installation of a Saltwater Intake Line Over 2000 Feet Offshore, St. John. Shoreline Stabilization Project for Buccaneer Hotel, The Buccaneer, Environmental Assessment Report for the Placement of a Shoreline Stabilization Structure to Protect the Eroding Shoreline, St. Croix. VIWAPA’s Conversion to LPG, VITOL and V.I. Water and Power Authority, Environmental Assessment Report for the Installation of LPG conversion Equipment and Fuel Dock Expansion (and Offshore Deep-Water Buoy Permit for LPG Ships), St. Croix and St. Thomas. ENVIRONMENTAL ASSESSMENT REPORTS 2014 – 2019 Water quality, monitoring and/or compensatory mitigation plans were developed to supplement many of the environmental assessment reports listed. viNGN Submarine Cable Network, Alcatel-Lucent for viNGN, Environmental Assessment Report for the Installation of an Inter-Island Cable System (including a Cable Beach Routing and Landfall Study), U.S. Virgin Islands. Improvements to the Frederiksted Pier, V.I. Port Authority, Environmental Assessment Report for the Installation of a New Tender Landing, St. Croix. Improvements to the Red Hook Marine Terminal, V.I. Port Authority, Environmental Assessment Report for the Construction of a New Customs Building and Shoreline Improvements, St. Thomas. Offshore Windmills, Ocean Energy, Inc., Environmental Assessment Report for the Installation of Offshore Turbines, a Submarine Cable, and Cable Landing (including a Bird Study), St. BIOIMPACT, INC. QUALIFICATION STATEMENT Thomas. St. John Marina, Summers End Group, Environmental Assessment Report for the Development of a Marina and Associated Upland Facilities, St. John. Maintenance Dredging of the Schooner Channel, V.I. Port Authority and HUD/V.I. Housing and Finance Authority (VIHFA), Environmental Assessment Report for the Dredging of the Schooner Channel (including an Evaluation of Alternative Alignments), St. Croix. Remediation of Hydrocarbon Contamination at the V.I. Seaplane Ramp, V.I. Port Authority, Environmental Assessment Report for the Installation of Restorative Sheet Piles to Restore (and the Containment of Hydrocarbon-contaminated Soil from a Leaking Underground Storage Tank [LUST]), St. Croix. Maintenance of the Existing Bulkhead and Maintenance Dredging of Charlotte Amalie Harbor, CH2M Hill and WICO, Environmental Assessment Report for the Replacement of the Sheet Pile in the Inner Berth (including the Development of a Coral Transplant Mitigation Plan), St. Thomas. ENVIRONMENTAL ASSESSMENT REPORTS 2009 – 2013 Water quality, monitoring and/or compensatory mitigation plans were developed to supplement each of the environmental assessment reports listed. Dredging of Crown Bay Marine Terminal and Turning Basin, V.I. Port Authority, Environmental Assessment Report for the Dredging of the Crown Bay Marine Terminal and Basin, St. Thomas. Maintenance Dredging of Crown Bay Marina, V.I. Port Authority, Environmental Assessment Report for the Dredging of Crown Bay Marina (including a Seagrass and Coral Mitigation Plan), St. Thomas. Improvements to Bordeaux Road, V.I. Department of Public Works and Federal Highway Administration in Collaboration with Parsons Brinkerhoff, Environmental Assessment Report for a Finding of No Significant Impact, St. Thomas. Improvement to Spring Gut Road, V.I. Department of Public Works and Federal Highways Administration in Collaboration with Stanley Engineer, Environmental Assessment Report for Improvements to Spring Gut Road for a Finding of No Significant Impact, St. Croix. Coral World’s Dolphin Exhibit, Coral World (VI), Inc., Environmental Assessment Report for the Construction of an Offshore Dolphin Pen and Viewing Dock (and ESA Corals Monitoring BIOIMPACT, INC. QUALIFICATION STATEMENT and Mitigation Plan), St. Thomas. Expansion of the Spratt Bay Homeowners Dock (SBHOA), Spratt Bay Homeowner’s Association, Environment Assessment Report for the Expansion of the SBHOA Dock, Water Island. Expansion of Veterans Drive, V.I. Department of Public Works and Federal Highway Administration in Collaboration with Parsons Brinckerhoff, Environmental Assessment Report for a Finding of No Significant Impact and Drafting the USACE Statement of Findings, St. Thomas. Chiller Cooling System, BaHaMar and HDR, Inc., Environmental Assessment Report for the Placement of a Saltwater Intake Line at the BaHaMar Resort, Grand Bahama. Reverse Osmosis Facility, V.I. Water and Power Authority, Environmental Assessment Report for the Installation a New Reverse Osmosis Facility at the St. Thomas Power Plant, St. Thomas. Submarine Power Cable, V.I. Water and Power Authority, Environmental Assessment Report for the Installation of a Submarine Power Cable between the Islands of St. Thomas and St. John, Pillsbury Sound, St. Thomas and St. John. Chiller System and Dock Repairs at the Marriott Frenchman’s Reef, Diamond Rock, Environmental Assessment Report for the Installation of Saltwater Intake Line and Dock Repairs (and Larval Study for Intake), St. Thomas. Expansion of Heavy Materials Krum Bay Facility, Heavy Materials St. Thomas, Environmental Assessment Report for the Expansion of Heavy Materials Concrete Facility in Krum Bay, St. Thomas. Thirty-three-Megawatt Waste-to-Energy Plant, Alpine Energy Group, Inc., Environmental Assessment Report for the Construction of a 33-Megawatt Waste-to-Energy Plant (including Conducting a Survey of Endangered V.I. Tree Boas in the Area), St. Thomas. Eighteen-Megawatt Waste-to-Energy Plant, Alpine Energy Group, Inc., Environmental Assessment Report for the Construction of an 18-Megawatt Waste-to-Energy Plans (including a Wetland Delineation), St. Croix. Reverse Osmosis Facility on St. John, V.I. Water and Power Authority, Environmental Assessment Report for the Construction of a Reverse Osmosis Facility, St. John. Seven Hills Development, Robin Bay Partners, Environmental Assessment Report for the Development of Seven Hills Residential Community (including a Wetland Delineation), St. Croix. BIOIMPACT, INC. QUALIFICATION STATEMENT Improvements to the Molasses Dock, V.I. Port Authority, Environmental Assessment Report for Dredging and Improvements to the Molasses Dock Roll-on Roll-off Facility (and Mitigation Plan for the Mangrove Shoreline), St. Croix. Dredging of the Charlotte Amalie Harbor Channel and the Filling of Lindbergh Bay, The West Indian Company Limited, Environmental Assessment Report for the Dredging and Widening of the Charlotte Amalie Harbor to Accommodate Oasis Class Ships at WICO Docks and the Disposal of Dredged Materials in the Historic Dredging Hole in Lindbergh Bay, St. Thomas. Fueling Station, V.I. Water and Power Authority, Environmental Assessment Report for the Installation of a Vehicle Fueling Station in the Richmond Plant Terminal Facility License, St. Croix. ENVIRONMENTAL ASSESSMENT REPORTS 2005 – 2008 Water quality, monitoring and/or compensatory mitigation plans were developed to supplement each of the environmental assessment reports listed. Port of Mandahl, MSJ Realty, Environmental Assessment Report for the Development of the Marina and Resort in Estate Mandahl, St. Thomas. North Sound Yacht Club, Victor International, Environmental Assessment Report for the Development of a Marina and Yacht Club in North South, Virgin Gorda, BVI. Reconstruction of the Frenchman’s Cove Dock, Marriott Vacation Club, Environmental Assessment Report for the Reconstruction and Expansion of a Damaged Dock in Charlotte Amalie Harbor, St. Thomas. Thatch Cay Development, Thatch Cay LLC, Environmental Assessment Report for the Development of a Resort Community and Marine Infrastructure on Thatch Cay, St. Thomas. Smith Bay Development, Smith Bay Developers, Inc., Environmental Assessment Report for a Condominium Complex, St. Thomas. Subdivision of Great St. James, Christian Kejer, Environmental Assessment Report for The Development of a Residential Community on Great St. James including Marine Access Infrastructure, Great St. James Island, St. Thomas. Subdivision of Inner Brass, Green Island Developers, Environmental Assessment Report for the Development of a Residential Community on Inner Brass including Marine Access BIOIMPACT, INC. QUALIFICATION STATEMENT Infrastructure, Inner Brass Island, St. Thomas. Subdivision of Inner Brass, Bryan Family, Environmental Assessment Report for the Subdivision of Lots for a Residential Community on Inner Brass and the Development of a Dock for Access. Inner Brass Island, St. Thomas. Cabrita Point, Cabrita Point Partners and Lionstone LLC, Environmental Assessment Report for the Development of a Resort Community, a Mitigation and Monitoring Plan for the Endangered V.I. Tree Boa and a Monitoring Plan for a Reverse Osmosis Intake Line, Dock and Swimming Platform, St. Thomas. Subdivision of 77 Acres in Hansen Bay, St. John Flamboyant Realty, Environmental Assessment Report for the Development of Roads and a Subdivision in Hansen Bay, St. John. Subdivision of 14 Acres in Hansen Bay, St. John Hansen Bay Development Group, Environmental Assessment Report for the Development of Roads, and a Subdivision in Hansen Bay (including a Wetland Delineation), St. John. Expansions and Improvements to the Ritz-Carlton Hotel, William Karr and Associates, Environmental Assessment Report for the Expansion and Renovation of the Ritz-Carlton Hotel, St. Thomas. Modification to Carden Beach Condominiums, TK Properties, Inc., Environmental Assessment Report for the Development of Zero Lot Line Homes at the Carden Beach Property, St. Croix. Development of Betty’s Hope, V.I. Port Authority, Environmental Assessment Report and Wetland Delineations for the Development of the South Shore Property for Commercial and/or Residential Use, St. Croix. Expansion of the Compass Point Marina, Margate Management, Environmental Assessment Report for the Addition of Docks at the Compass Point Marina in Benner Bay, St. Thomas. Improvements, Expansions and Maintenance of HOVENSA Petroleum Refinery, HOVENSA LLC, Environmental Assessment Reports for the 1) Construction of Maintenance Buildings and Replacement of Existing Stacks, 2) Construction of a Low Sulfur Fuels (LSF) Facility, 3) Construction of Modular Buildings, and 4) Construction of Housing in Estate Blessing (including Permitting of an Existing Borrow Pit), St. Croix. Installation of a Permanent Barge Landing Facility on Lovango Cay, Joseph Markus Trust, Environmental Assessment Report for the Development of a Permanent Barge Landing Facility (including a Compensatory Mitigation Plan for Endangered Coral Species), Lovango Cay. Barge Landing, Swim Dock and Beach Enhancement on Little St. James, LSJ LLC, Environmental Assessment Report for the Relocation of the Existing Barge Landing and the BIOIMPACT, INC. QUALIFICATION STATEMENT Construction of a Swim Dock and Beach Enhancing Devices, Little St. James. Development of Affordable Housing in Calabash Boom, Reliance Housing, Environmental Assessment Report for the Development of Affordable Housing in Calabash Boom (and Territorial Pollutant Discharge Elimination System [TPDES] Permits), St. John. Demineralized Water System and Storage Tank Upgrades, V.I. Water and Power Authority, Environmental Assessment Report for the Installation of a New Storage Tank and Demineralizer, St. Croix. Development of a Pizza Bar and Miniature Golf Course, Divi Carina Bay Resort, Environmental Assessment Report for the Development of Amenities at the Divi Carina Bay Resort and Casino, St. Croix. Placement of Fuel Pipelines on the Ann E. Abramson Pier, Royal Caribbean Cruise Lines, V.I. Port Authority, Environmental Assessment Report for the Installation of Fuel Lines on the Frederiksted Pier, St. Croix. Development of a Marina and Related Infrastructure, Coral Bay Marina LLC, Environmental Assessment Report for the Dredging and Development of a Marina in Coral Bay (including an Alternative Analysis to Reduce Impacts for the USACE), St. John Development of a Marine Mammal Encountered Facility, Coral World (VI), Inc., Environmental Assessment Report for the Development of a Sealion Encounter Facility, St. Thomas. Improvements to The Randall “Doc” James Racetrack, TRAXCO, Environmental Assessment Report for Improvements to the “Doc” James Racetrack Facility (including Wetland Delineations), St. Croix. Maintenance Dredging and the Permitting of Permanent Moorings, Westin Resort, Environmental Assessment Report for Maintenance Dredging of the Existing Channel and around the Dock, and Mooring Installations, St. John. ENVIRONMENTAL ASSESSMENT REPORTS 2000 – 2004 Water quality, monitoring and/or compensatory mitigation plans were developed to supplement each of the environmental assessment reports listed. Compass Point Marina Expansion, Compass Point Marina in Collaboration with Springline Architects, Environmental Assessment Report for the Expansion of the Existing Compass Point Marina, St. Thomas. BIOIMPACT, INC. QUALIFICATION STATEMENT Emergency Electrical Cable St. Thomas-St. John, V.I. Water and Power Authority, Environmental Assessment Report for the Placement of a New Submarine Power Cable between St. Thomas and St. John, St. Thomas. Richmond Sand Channel Dredging, V.I. Water and Power Authority, Environmental Assessment Report for Maintenance Dredging of the Richmond Sand Channel, St. Croix. Hassel Island Electrical Cable Replacement, V.I. Water and Power Authority Environmental Assessment Report for the Installation of a New Submarine Cable between St. Thomas and Hassel Island, St. Thomas. Golden Resorts Golf Resort, Casino & Conference Center, Golden Resort, Environmental Assessment Report for the Development of Golden Resorts Golf Resort, Casino, and Conference Center (including a Wetland Delineation), St. Croix. Crown Bay Marine Terminal Improvements, V.I. Port Authority in Collaboration with Adams, Inc., Environmental Assessment Report for Improvements to the Crown Bay Marine Terminal, St. Thomas. Global Crossings Point of Presence, Global Crossings, Environmental Assessment Report for the Placement of a Point of Presence Communications Tower in Frederiksted, St. Croix. Burial of Fiber Optic Cables, Innovative Telephone, Environmental Assessment Report for the Burial of Fiber Optic Cables on the North Shore, St. Croix. Burial of Fiber Optic Cables on the West End of St. Croix, Innovative Telephone, Environmental Assessment Report for the Burial of Fiber Optic Cables on the West End, St. Croix. Callaloo Club Blowing Point, Callaloo Club Peninsula, Environmental Assessment for the Development of a Marina on the Island of Anguilla, British West Indies. Installation of a Waterline between St. Thomas and St. John, V.I. Water and Power Authority, Environmental Assessment Report for the Installation of a Waterline between St. Thomas and St. John, St. Thomas. Installation of a Submarine Cable to Little St. James, V.I. Water and Power Authority, Environmental Assessment Report for the Installation of a Utility Line between St. Thomas and Little St. James, Little St. James. South American Crossing Cable Station, Global Crossing, Environmental Assessment Report for the Construction of the South American Crossing Cable Station at Estate Northside, St. Croix. Water Island Ferry Dock, V.I. Department of Public Works, Environmental Assessment Report BIOIMPACT, INC. QUALIFICATION STATEMENT for the Construction of a Ferry Dock on Water Island, Water Island. CuisinArt Golf Resort & Spa Beach Enhancements, CuisinArt, Environmental Impact Assessment Report for Beach Renourishment, Anguilla, British West Indies. Cinnamon Reef Resort, Cinnamon Reef, Environmental Impact Assessment Report for the Development of a Marine Facility, Anguilla, British West Indies. Frederiksted Pier Improvements, V.I. Port Authority, Environmental Assessment Report for Improvements to the Existing Frederiksted Pier, St. Croix. Construction of a Private Dock on Little St. James, LSJ LLC, Environmental Assessment Report for the Construction of a Private Dock on the Island of Little St. James, Little St. James. Phase II of the Christiansted Boardwalk, Government of the Virgin Islands Environmental Assessment Report for Phase II of the Christiansted Boardwalk, St. Croix. Construction of a Headquarters, Beal Aerospace, Environmental Assessment Report for the Construction of Beal Aerospace’s World Headquarters in Estate Great Pond, St. Croix. ENVIRONMENTAL ASSESSMENT REPORTS 1988 – 2000 Hurricane Damaged Dock Reconstruction, Divi Carina Bay Resort, Environmental Assessment Report for the Reconstruction of a Dock after Damage Associated with Hurricane Hugo at the Divi Carina Bay Resort and Casino, St. Croix. Global Crossing Cable Terminal, Global Crossing, Environmental Assessment Report for the Construction of a Cable Terminal Building and Corridor for Eight Submarine Fiber Optic Cables (including a Landfall Study) in Frederiksted, St. Croix. Construction of a Coker and Coker Dock at the HOVENSA Petroleum Refinery, HOVENSA LLC, Environmental Assessment Report for the Construction of a Coker and Coker Dock, St. Croix. Frederiksted Pier Mooring Dolphin, V.I. Port Authority, Environmental Assessment Report for the Construction of a Mooring Dolphin at the Frederiksted Pier, St. Croix. Seaplane Terminal, V.I. Port Authority, Environmental Assessment Report for the Development of a Seaplane Terminal at the Old Seaplane Ramp, St. Croix. Forest Bay Marina, Forest Bay Group, Environmental Assessment Report for the Development BIOIMPACT, INC. QUALIFICATION STATEMENT of a Marina and Related Facilities in Forest Bay, Anguilla, British West Indies. Dolphin Lagoon, META Resorts, Environmental Assessment Report for the Development of a Dolphin Lagoon at Meads Bay, Anguilla, British West Indies. Construction of the Christiansted Boardwalk, Government of the Virgin Islands, Environmental Assessment Report for the Construction of a Boardwalk in Christiansted, St. Croix. Runway Extension of the Henry E. Rohlsen Airport, V.I. Port Authority in Collaboration with LPA Group, Environmental Assessment Report for the Runway Extension at the Henry E. Rohlsen Airport, St. Croix. Red Hook Marine Terminal Expansion, V.I. Port Authority, Environmental Assessment Report for the Expansion of the Red Hook Marine Terminal (including the Development and Implementation of Mitigation and Monitoring Plans), St. Thomas. Enighed Pond Marine Terminal, V.I. Port Authority, Environmental Assessment Report for the Creation of the Enighed Pond Marine Facility (including the Development and Implementation of Mitigation and Monitoring Plans), St. John. Submerged Land Renewal, Coral World (VI), Inc., Environmental Assessment Report for the Renewal of the Submerged Land Lease for the Coral World Facility, St. Thomas. Construction of a Seawall, Cowpet Bay, Environmental Assessment Report for the Modification of an Existing Permit to Construct a Seawall, St. Thomas. Riprap Revetment Installation, Watergate East Villas, Environmental Assessment Report for the Construction of a Rip-Rap Revetment, St. Thomas. Improvements to the Fuel Dock, V.I. Water and Power Authority, Environmental Assessment Report for Improvements to the Fuel Dock at the Power Generating Facility, St. Thomas. Subdivision of Estate Misgunst, La Domaine, Environmental Assessment Report for the Subdivision of 40 Acres of Land in Estate Misgunst, St. Thomas. Expansion of the Alexander Hamilton Airport and Highway 64 Relocation, V.I. Port Authority, Environmental Assessment Report for the Expansion of the Alexander Hamilton Airport Terminal and Highway 64 Relocation (including a Wetland Delineation, and Development and Implementation of a Wetland Mitigation Plan), St. Croix. AT&T Cable Landing Facility, AT&T, Environmental Assessment Report for the Cable Landing Facility at Estate Northside (including a Beach Landfall Study, a Cable Routing Study, and the Development of a Water Quality and Environmental Monitoring and Mitigation Plan), St. Croix. Dredging of the Sand Channel, DEVCON, Environmental Assessment Report for the Dredging BIOIMPACT, INC. QUALIFICATION STATEMENT of the Christiansted Sand Channel, St. Croix. Expansion of the Red Mud Storage Ponds, VIALCO, Environmental Assessment Report for the Expansion of the Red Mud Storage Ponds at the VIALCO Alumina Facility, St. Croix. Stormwater Drainage System, VIALCO, Environmental Assessment Report for the Creation of a Stormwater Drainage System at the VIALCO Alumina Facility, St. Croix. Permitting of a Caliche Mine, VIALCO, Environmental Assessment Report for the Mining of Caliche at the VIALCO Alumina Facility, St. Croix. BIOIMPACT, INC. QUALIFICATION STATEMENT Molasses Dock Expansion, V.I. Port Authority Subcontracted by Frank Torrez, Environmental Assessment Report for the Molasses Dock Terminal at the Third Port Facility, St. Croix. ENVIRONMENTAL ASSESSMENT REPORTS (SELECTED) 1988 – 1993 Beach Renourishment, St. Croix by the Sea, Environmental Assessment Report for a Beach Renourishment and Jetty Construction at St. Croix by the Sea, St. Croix. Vieques Shrimp Farm, Vieques Shrimp Mariculture Project, Environmental Assessment Report for the Creation of a Shrimp Farm in Puerto Ferro, Vieques, Puerto Rico. Marine Spill Response Corporation (MSRC) Dock, Hess Oil Virgin Islands (HOVIC) Petroleum Refinery, Environmental Assessment Report for the Construction of a Pier in the HOVIC West Turning Basin, St. Croix. Construction of Eden Beach Hotel and Condominiums, Eden Beach, Environmental Assessment Report for the Proposed Construction of Eden Beach Hotel and Condominiums, St. Croix. Expansion of the Tamarind Reef Hotel, Tamarind Reef, Environmental Assessment Report for the Proposed Reconstruction and Expansion of the Tamarind Reef Hotel, St. Croix. Construction of Gas Turbines at the Third Port, V.I. Water and Power Authority, Environmental Assessment Report and USACE Application for the Construction of Two Gas Turbines at the Third Port Site, St. Croix. Subdivision of Lovango Cay, Joseph Markus Trust, Environmental Assessment Report for the Creation of a Subdivision on Lovango Cay and Placement of a Private Dock, Lovango Cay. Well Water Collection System, VIALCO, Environmental Assessment Report for the Construction of a Well Water Gathering System for Wells at the VIALCO Alumina Facility, St. Croix. Crawl Cay, Monroe County, Environmental Assessment Report, Wetlands Delineation and Hammock Studies of Crawl Cay, Florida. Jack’s Bay Subdivision, Jack’s Bay Development Company, Environmental Assessment Report for the Subdivision of Approximately 300 Acres into 64 Lots at Estate Jack Bay and Estate Isaac Bay, St. Croix. Bauxite Building, VIALCO, Environmental Assessment Report for the Expansion of the Bauxite Building at the VIALCO Alumina Facility, St. Croix. BIOIMPACT, INC. QUALIFICATION STATEMENT Carambola Beach Club Improvements, Danested, Environmental Assessment Report for the Repair and Improvement of the Carambola Beach Club Facilities, St. Croix. Salt River National Park, National Park Service, Environmental Impact Statement for the Proposed National Park at Salt River, St. Croix. Desalination Unit, V.I. Water and Power Authority, Environmental Assessment Report for the Construction of a Desalination Unit on St. John, St. John. Construction of Estate Turner Hole Condominiums, Carmel by the Sea, Environmental Assessment Report for the Construction of a 95-unit Condominium at Estate Turner Hole, St. Croix. Very Long Baseline Array (VLBA) Observation Station, NASA, Environmental Assessment Report and Landscaping Plan for the Construction of a VLBA, St. Croix. Buccaneer Hotel Room Expansion, Buccaneer Hotel, Environmental Assessment Report for a 20-room Addition to the Buccaneer Hotel, St. Croix. Construction of a Ritz-Carlton Hotel, Environmental Assessment Report and Zoning Application for a 350-room Ritz-Carlton Hotel in Estate Davis Bay, St. Croix. Frederiksted Pier Expansion, V.I. Port Authority, Environmental Assessment Report for the Construction of a Second Pier in Frederiksted, St. Croix. Construction of the Kingston Hotel, Kingston Hotel, Environmental Assessment Report for the Construction of a Hotel and Condominium in Kingston, Tortola, BVI. Construction of an Airport Warehouse, V.I. Port Authority, Environmental Assessment Report for Construction of a Warehouse Facility at the Alexander Hamilton Airport, St. Croix. Development of the Great Pond Resort, St. Croix, Environmental Assessment Report, for Golden Gaming, Zoning Application, and USACE Permit Application for a Hotel and Condominium Project at Estate Great Pond, St. Croix. BIOIMPACT, INC. QUALIFICATION STATEMENT ENVIRONMENTAL ASSESSMENT REPORTS 1986 – 1988 St. Croix St. Thomas St. John Columbus Landing, St. Croix Blue Beards Beach, St. Thomas Concordia, St. John Grapetree Beach, St. Croix St. Croix by the Sea, St. Croix Ensenada, St. Croix Virgin Grand, St. Croix Sugar Bay, St. Croix Turtle Run, St. Croix Palm Shores, St. Croix Baobab, St. Croix Reflection Bay, St. Croix Coakley Bay, St. Croix Green Cay, St. Croix Turquoise Bay St. Croix Eagle Bay, St. Croix Granard, St. Croix Concordia, St. John Wider Caribbean Southeast Peninsula, St. Kitts Divi Dive Canal, Nassau, Bahamas BIOIMPACT, INC. QUALIFICATION STATEMENT ENVIRONMENTAL CONTAMINATION ASSESSMENTS 1990 – PRESENT 2022 – Present Sampling for Heavy Metals Contamination of the Soil in Estate Donoe, St. Thomas. 2000 – Present Sampling for Chemical Contamination in Cisterns as a Result of a Hydrocarbon Release in the Air, St. Croix. 1994 – Present Periodic Sampling of the Leaking Underground Storage Tanks (LUSTs) at the V.I. Port Authority Seaplane Ramp, St. Croix. 2019 Sampling for Mold at the Renaissance Hotel, St. Thomas. 2016 – 2022 Sampling of Underground Storage Tanks (USTs) for Gasoline Service Stations on St. Thomas and St. Croix. 2012 – 2016 Sampling for Recognized Environmental Conditions in Estate Anna’s Hope, St. Croix. 2006 – 2016 Sampling for Petroleum Product Contamination at Gasoline Stations and Industrial Sites, St. Croix. 1990 – 2002 Sampling of Residential and Commercial Properties on St. Croix, St. Thomas, St. John and Puerto Rico for Recognized Environmental Conditions. APPENDIX B 1 | P a g e HYDROLOGY STUDY REPORT 66 ROOM BOUTIQUE HOTEL PROJECT SITE: 7A HOSPITAL STREET CHRISTIANSTED, ST. CROIX, USVI 00820 PREPARED BY: 7-1 BONNE ESPERANCE P.O. BOX 8269 CHRISTIANSTED, ST. CROIX USVI 00823 SITE LOCATION GALLOWS BAY CHRISTIANSTED BY-PASS PROTESTANT CAY APPENDIX C 2 | P a g e TABLE OF CONTENTS INTRODUCTION ............................................................................................................................................. 3 SOILS CLASSIFICATION .................................................................................................................................. 3 CURVE NUMBER (CN) CLASSIFICATION ......................................................................................................... 4 BASIN CHARACTERISTICS .............................................................................................................................. 6 TIME OF CONCENTRATION (Tc) .................................................................................................................... 6 RUNOFF (Q) AND STORAGE VOLUME (V) ................................................................................................... 10 CONCLUSION ............................................................................................................................................... 12 APPENDICES ................................................................................................................................................ 14 3 | P a g e INTRODUCTION This site is mostly vacant except for a dilapidated structure at the front that is currently being renovated. The proposed improvements encompass a completed renovation of the existing building and the addition of a new sixty-six (66) room hotel building comprising of 4 levels, a total of approximately 45,000 square feet. This hydrology study will focus on a pre-development vs. a post-development analysis to ensure that the proposed improvements do not adversely impact stormwater quality and quantity beyond the pre- existing condition. Any additional impacts will be quantified and properly mitigated in accordance with the Department of Planning and Natural Resources (DPNR) requirements. SOILS CLASSIFICATION For Curve Number (CN) determination, there are four (4) main types of Hydrologic Soils Classification which are as follows: Group A – Soils that have low runoff potential when thoroughly wet. These soils typically have less than 10% clays and more than 90% sand or gravel. Group B – Soils that have moderately low runoff potential when thoroughly wet. These soils typically have between 10% - 20% clays and 50% - 90% sand. Group C – Soils that have moderately high runoff potential when thoroughly wet. These soils typically have between 20% - 40% clays and less than 50% sand. Group D – Soils that have high runoff potential when thoroughly wet. These soils typically have greater than 40% clays and less than 50% sand. 4 | P a g e St. Croix Hydrologic Soils Classification (Source: https://usvi.mapgeo.io) Based on the above, the Hydrologic Soils Classification for the Site is Group A and Group B. This soil classification type is synonymous with Group A and Group B in Table 3.6 below. CURVE NUMBER (CN) CLASSIFICATION The curve number classification is determined based on land use type and hydrologic soil type. The table below indicates CN values for various land uses and hydrologic soil types. SITE LOCATION 5 | P a g e Based on the above, the site falls into three (3) distinct classifications listed as follows: Poor Condition (grass cover < 50%) – this accounts for the grass/vegetative cover/sand within the property. Paved; open ditches (including right-of-way) – this accounts for the paved surfaces and buildings within the property. Gravel – this accounts for the gravel stone ground cover within the property. 6 | P a g e BASIN CHARACTERISTICS The disturbed area of the site is approximately 1.16 acres broken down into three (3) major ground cover types. The table below shows the breakdown along with a Weighted Curve Number for each category and ultimately for the entire site.  PRE-DEVELOPMENT  POST-DEVELOPMENT TIME OF CONCENTRATION (Tc) The time of concentration is necessary to estimate peak discharge and is dependent upon the watershed characteristics. To accurately determine Tc, the hydraulics of each part of the flow path must be considered separately.  PRE-DEVELOPMENT In the pre-development, the site has one distinct flow path, which is overland flow as follows:  A-B (Overland Flow) – 380 ft. travel distance @ average slope of 3.2% 7 | P a g e The flow pattern will be evaluated to determine the Time of Concentration (Tc) which will be used to determine the stormwater water runoff volume. 8 | P a g e  POST-DEVELOPMENT In the post-development, the site has one critical distinct flow path, which include a combination of overland and pipe flow as follows:  A-B (Overland) – 23 ft. travel distance @ average slope of 1.5%  B-C (Pipe Flow) – 48 ft. travel distance @ average slope of 0.5%  C-D (Pipe Flow) – 271 ft. travel distance @ average slope of 0.5%  D-I (Pipe Flow) – 64 ft. travel distance @ average slope of 0.5% 9 | P a g e The flow pattern will be evaluated to determine the Time of Concentration (Tc) which will be used to determine the stormwater water runoff volume. 10 | P a g e RUNOFF (Q) AND STORAGE VOLUME (V) DPNR Runoff Onsite Storage Requirements as per the Territorial Pollutant Discharge Elimination System - General Permit Number VIGSA0000 is as follows: 1) 3600 cubic feet per acre (1” over 1 acre) or, 2) 2yr – 24 hours storm; whichever is greater 11 | P a g e  PRE-DEVELOPMENT 12 | P a g e  POST-DEVELOPMENT CONCLUSION The proposed improvements result in a net increase in building and impervious areas over the existing condition which is evident in the pre vs. post runoff coefficient increasing from 75 to 91. The storage required for 1” over the entire site area = 0.10 ac-ft. The storage required from a pre vs. post analysis of the 2yr – 24 hour storm (0.29 ac-ft – 0.16 ac-ft) = 0.13 ac-ft. 13 | P a g e Based on the above results, the pre-post analysis for the 2yr – 24 hour storm controls. Given that the site has no available room for any retention areas, the required storage of 0.13 ac-ft will be accounted for by utilizing Stormtech Underground Storage Chambers. These chambers will be placed beneath the new gravel parking lot as illustrated on Plan Sheet C006. 14 | P a g e In addition to runoff storage calculations, pipe flood routing calculations were also performed to ensure that the piping network is adequately sized to convey the runoff to the retention storage areas. These calculations are included in the attached Appendices. APPENDICES PRE-DEVELOPMENT SITE AREA BREAKDOWN 15 | P a g e POST-DEVELOPMENT SITE AREA BREAKDOWN 7A Hospital Street, C'sted, St. Croix, USVI 00820 PIPE FLOOD ROUTING SIZING ANALYSIS BUILDTEC, LLC 7-1 Bonne Esperance, P.O. Box 8269, Christiansted, USVI 00823 66 ROOM BOUTIQUE HOTEL CURRENT ISSUE DATE: 06/01/24 PREPARED BY: DAMIAN CARTWRIGHT, P.E. Project Name: 66 ROOM BOUTIQUE HOTEL Date: June 1, 2024 Project Location: 7A Hospital Street, C'sted, St. Croix, USVI 00820 Activity: Drainage Design_Pipe Flood Routing Project #: Sheet #: Engineer: DC Drawing Ref.: DESIGN OBJECTIVE: Determine runoff and pipe sizing for sub catchments in the 66 Room Boutique Hotel Development DESIGN REFERENCEStandard Handbook for Civil Enginers, Merritt/Lofton/Ricketts Design & Constr. Of Urban Stormwter Management Systems, ASCE Drainage Handbook-Hydrology,Oct. 2000, Florida Dept. of Transportation Drainage Handbook-Storm Drains, Aug. 2000, Florida Dept. of Transportation Drainage Manual, Oct. 2000, Florida Dept. of Transportation DESIGN PARAMETERS: 1. Divide area into subcatchments 2. Use Rational formula to determine peak discharge for each sub-catchment Storm Design Period yrs 5 Storm Duration hrs 6 FDOT Design Zone 10 Figure F-21, Drainage Handbook-Hydrology Rainfall Intensity in/hr 4 IDF Curve, Figure F-31, Drainage Handbook-Hydrology Average Slope % 0 to 2 Runoff Coeff., Table T-4, Drainage Handbook-Hydrology Minimum Pipe Flow Velocityft/s 2 Sec. 3.6.1 Drainage Manual C1 (Woodlands) 0.15 Runoff Coeff., Table T-4, Drainage Handbook-Hydrology C2 (Pasture, Grass, and Farmland) 0.20 Runoff Coeff., Table T-4, Drainage Handbook-Hydrology C3 Bare Earth / Gravel 0.50 Runoff Coeff., Table T-4, Drainage Handbook-Hydrology C4 Rooftops & Pavements 0.95 Runoff Coeff., Table T-4, Drainage Handbook-Hydrology C5 Impervious Pavements 0.95 Runoff Coeff., Table T-4, Drainage Handbook-Hydrology C6 SFR 0.45 Runoff Coeff., Table T-4, Drain. Hndbk-Hydrology (lots < 1/2 Acre) C7 MFR 0.75 Runoff Coeff., Table T-4, Drainage Handbook-Hydrology C8 Commercial & Industrial 0.95 Runoff Coeff., Table T-4, Drainage Handbook-Hydrology 7-1 Bonne Esperance, P.O. Box 8269, Christiansted, USVI 00823 Project Name: 66 ROOM BOUTIQUE HOTEL Date: June 1, 2024 Project Location: 7A Hospital Street, C'sted, St. Croix, USVI 00820 Activity: Drainage Design_Pipe Flood Routing Project #: Sheet #: Engineer: DC Drawing Ref.: Sub Catchment Number CA-1 Total Catchment Area, A acres 0.04 Land Use Percentages A1 (Woodlands) 0 A2 (Pasture, Grass, and Farmland) 0 A3 Bare Earth / Gravel 0 A4 Rooftops 60 A5 Impervious Pavements 40 A6 SFR 0 A7 MFR 0 A8 Commercial & Industrial 0 Total 100 OK Weighted Average Runoff Coeff. 0.95 C = CiAi/A Rainfall Intensity in/hr 4 Peak Flow, Q ft3/s 0.15 Q = CIA Total Rainfall Volume ft3 3283.20 Drainage Pipe Sizing Pipe Material HDPE Mannings No., n 0.012 Sec. 3.6.4, Drainage Manual Pipe Dimension, D in 12.00 Pipe Slope, S ft/ft 0.005 Flow Velocity ft/s 3.48 OK V= 0.590/n x D2/3 x S1/2 , eqn. 21.33b, SHCE Full Flow Pipe Capacity ft3/s 2.73 OK Q= 0.463/n x D8/3 x S1/2 , eqn. 21.33c, SHCE 7-1 Bonne Esperance, P.O. Box 8269, Christiansted, USVI 00823 Project Name: 66 ROOM BOUTIQUE HOTEL Date: June 1, 2024 Project Location: 7A Hospital Street, C'sted, St. Croix, USVI 00820 Activity: Drainage Design_Pipe Flood Routing Project #: Sheet #: Engineer: DC Drawing Ref.: Sub Catchment Number CA-2 Total Catchment Area, A acres 0.123 (includes contributing area from CA-1) Land Use Percentages A1 (Woodlands) 0 A2 (Pasture, Grass, and Farmland) 0 A3 Bare Earth / Gravel 0 A4 Rooftops 53.7 A5 Impervious Pavements 46.3 A6 SFR 0 A7 MFR 0 A8 Commercial & Industrial 0 Total 100 OK Weighted Average Runoff Coeff. 0.95 C = CiAi/A Rainfall Intensity in/hr 4 Peak Flow, Q ft3/s 0.47 Q = CIA Total Rainfall Volume ft3 10095.84 Drainage Pipe Sizing Pipe Material HDPE Mannings No., n 0.012 Sec. 3.6.4, Drainage Manual Pipe Dimension, D in 12.00 Pipe Slope, S ft/ft 0.005 Flow Velocity ft/s 3.48 OK V= 0.590/n x D2/3 x S1/2 , eqn. 21.33b, SHCE Full Flow Pipe Capacity ft3/s 2.73 OK Q= 0.463/n x D8/3 x S1/2 , eqn. 21.33c, SHCE 7-1 Bonne Esperance, P.O. Box 8269, Christiansted, USVI 00823 Project Name: 66 ROOM BOUTIQUE HOTEL Date: June 1, 2024 Project Location: 7A Hospital Street, C'sted, St. Croix, USVI 00820 Activity: Drainage Design_Pipe Flood Routing Project #: Sheet #: Engineer: DC Drawing Ref.: Sub Catchment Number CA-3 Total Catchment Area, A acres 0.196 (includes contributing area from CA-1 & CA-2) Land Use Percentages A1 (Woodlands) 0 A2 (Pasture, Grass, and Farmland) 0 A3 Bare Earth / Gravel 0 A4 Rooftops 49.5 A5 Impervious Pavements 50.5 A6 SFR 0 A7 MFR 0 A8 Commercial & Industrial 0 Total 100 OK Weighted Average Runoff Coeff. 0.95 C = CiAi/A Rainfall Intensity in/hr 4 Peak Flow, Q ft3/s 0.74 Q = CIA Total Rainfall Volume ft3 16087.68 Drainage Pipe Sizing Pipe Material HDPE Mannings No., n 0.012 Sec. 3.6.4, Drainage Manual Pipe Dimension, D in 12.00 Pipe Slope, S ft/ft 0.005 Flow Velocity ft/s 3.48 OK V= 0.590/n x D2/3 x S1/2 , eqn. 21.33b, SHCE Full Flow Pipe Capacity ft3/s 2.73 OK Q= 0.463/n x D8/3 x S1/2 , eqn. 21.33c, SHCE 7-1 Bonne Esperance, P.O. Box 8269, Christiansted, USVI 00823 Project Name: 66 ROOM BOUTIQUE HOTEL Date: June 1, 2024 Project Location: 7A Hospital Street, C'sted, St. Croix, USVI 00820 Activity: Drainage Design_Pipe Flood Routing Project #: Sheet #: Engineer: DC Drawing Ref.: Sub Catchment Number CA-4 Total Catchment Area, A acres 0.305 (includes contributing areas from CA-1, CA-2 & CA-3) Land Use Percentages A1 (Woodlands) 0 A2 (Pasture, Grass, and Farmland) 0 A3 Bare Earth / Gravel 0 A4 Rooftops 53.8 A5 Impervious Pavements 46.2 A6 SFR 0 A7 MFR 0 A8 Commercial & Industrial 0 Total 100 OK Weighted Average Runoff Coeff. 0.95 C = CiAi/A Rainfall Intensity in/hr 4 Peak Flow, Q ft3/s 1.16 Q = CIA Total Rainfall Volume ft3 25034.40 Drainage Pipe Sizing Pipe Material HDPE Mannings No., n 0.012 Sec. 3.6.4, Drainage Manual Pipe Dimension, D in 12.00 Pipe Slope, S ft/ft 0.005 Flow Velocity ft/s 3.48 OK V= 0.590/n x D2/3 x S1/2 , eqn. 21.33b, SHCE Full Flow Pipe Capacity ft3/s 2.73 OK Q= 0.463/n x D8/3 x S1/2 , eqn. 21.33c, SHCE 7-1 Bonne Esperance, P.O. Box 8269, Christiansted, USVI 00823 Project Name: 66 ROOM BOUTIQUE HOTEL Date: June 1, 2024 Project Location: 7A Hospital Street, C'sted, St. Croix, USVI 00820 Activity: Drainage Design_Pipe Flood Routing Project #: Sheet #: Engineer: DC Drawing Ref.: Sub Catchment Number CA-5 Total Catchment Area, A acres 0.386 (includes contributing areas from CA-1, CA-2, CA-3 & CA-4) Land Use Percentages A1 (Woodlands) 0 A2 (Pasture, Grass, and Farmland) 0 A3 Bare Earth / Gravel 0 A4 Rooftops 56 A5 Impervious Pavements 44 A6 SFR 0 A7 MFR 0 A8 Commercial & Industrial 0 Total 100 OK Weighted Average Runoff Coeff. 0.95 C = CiAi/A Rainfall Intensity in/hr 4 Peak Flow, Q ft3/s 1.47 Q = CIA Total Rainfall Volume ft3 31682.88 Drainage Pipe Sizing Pipe Material HDPE Mannings No., n 0.012 Sec. 3.6.4, Drainage Manual Pipe Dimension, D in 12.00 Pipe Slope, S ft/ft 0.005 Flow Velocity ft/s 3.48 OK V= 0.590/n x D2/3 x S1/2 , eqn. 21.33b, SHCE Full Flow Pipe Capacity ft3/s 2.73 OK Q= 0.463/n x D8/3 x S1/2 , eqn. 21.33c, SHCE 7-1 Bonne Esperance, P.O. Box 8269, Christiansted, USVI 00823 Project Name: 66 ROOM BOUTIQUE HOTEL Date: June 1, 2024 Project Location: 7A Hospital Street, C'sted, St. Croix, USVI 00820 Activity: Drainage Design_Pipe Flood Routing Project #: Sheet #: Engineer: DC Drawing Ref.: Sub Catchment Number CA-6 Total Catchment Area, A acres 0.466 (includes contributing areas from CA-1, CA-2, CA-3, CA-4 & CA-5) Land Use Percentages A1 (Woodlands) 0 A2 (Pasture, Grass, and Farmland) 0 A3 Bare Earth / Gravel 0 A4 Rooftops 57.5 A5 Impervious Pavements 42.5 A6 SFR 0 A7 MFR 0 A8 Commercial & Industrial 0 Total 100 OK Weighted Average Runoff Coeff. 0.95 C = CiAi/A Rainfall Intensity in/hr 4 Peak Flow, Q ft3/s 1.77 Q = CIA Total Rainfall Volume ft3 38249.28 Drainage Pipe Sizing Pipe Material HDPE Mannings No., n 0.012 Sec. 3.6.4, Drainage Manual Pipe Dimension, D in 12.00 Pipe Slope, S ft/ft 0.005 Flow Velocity ft/s 3.48 OK V= 0.590/n x D2/3 x S1/2 , eqn. 21.33b, SHCE Full Flow Pipe Capacity ft3/s 2.73 OK Q= 0.463/n x D8/3 x S1/2 , eqn. 21.33c, SHCE 7-1 Bonne Esperance, P.O. Box 8269, Christiansted, USVI 00823 Project Name: 66 ROOM BOUTIQUE HOTEL Date: June 1, 2024 Project Location: 7A Hospital Street, C'sted, St. Croix, USVI 00820 Activity: Drainage Design_Pipe Flood Routing Project #: Sheet #: Engineer: DC Drawing Ref.: Sub Catchment Number CA-7 Total Catchment Area, A acres 0.549 (includes contributing areas from CA-1, CA-2, CA-3, CA-4, CA-5 & CA-6) Land Use Percentages A1 (Woodlands) 0 A2 (Pasture, Grass, and Farmland) 0 A3 Bare Earth / Gravel 0 A4 Rooftops 57.4 A5 Impervious Pavements 42.6 A6 SFR 0 A7 MFR 0 A8 Commercial & Industrial 0 Total 100 OK Weighted Average Runoff Coeff. 0.95 C = CiAi/A Rainfall Intensity in/hr 4 Peak Flow, Q ft3/s 2.09 Q = CIA Total Rainfall Volume ft3 45061.92 Drainage Pipe Sizing Pipe Material HDPE Mannings No., n 0.012 Sec. 3.6.4, Drainage Manual Pipe Dimension, D in 12.00 Pipe Slope, S ft/ft 0.005 Flow Velocity ft/s 3.48 OK V= 0.590/n x D2/3 x S1/2 , eqn. 21.33b, SHCE Full Flow Pipe Capacity ft3/s 2.73 OK Q= 0.463/n x D8/3 x S1/2 , eqn. 21.33c, SHCE 7-1 Bonne Esperance, P.O. Box 8269, Christiansted, USVI 00823 Project Name: 66 ROOM BOUTIQUE HOTEL Date: June 1, 2024 Project Location: 7A Hospital Street, C'sted, St. Croix, USVI 00820 Activity: Drainage Design_Pipe Flood Routing Project #: Sheet #: Engineer: DC Drawing Ref.: Sub Catchment Number CA-8 Total Catchment Area, A acres 0.658 (includes contributing areas from CA-1, CA-2, CA-3, CA-4, CA-5, CA-6 & CA-7) Land Use Percentages A1 (Woodlands) 0 A2 (Pasture, Grass, and Farmland) 0 A3 Bare Earth / Gravel 0 A4 Rooftops 54.3 A5 Impervious Pavements 45.7 A6 SFR 0 A7 MFR 0 A8 Commercial & Industrial 0 Total 100 OK Weighted Average Runoff Coeff. 0.95 C = CiAi/A Rainfall Intensity in/hr 4 Peak Flow, Q ft3/s 2.50 Q = CIA Total Rainfall Volume ft3 54008.64 Drainage Pipe Sizing Pipe Material HDPE Mannings No., n 0.012 Sec. 3.6.4, Drainage Manual Pipe Dimension, D in 12.00 Pipe Slope, S ft/ft 0.005 Flow Velocity ft/s 3.48 OK V= 0.590/n x D2/3 x S1/2 , eqn. 21.33b, SHCE Full Flow Pipe Capacity ft3/s 2.73 OK Q= 0.463/n x D8/3 x S1/2 , eqn. 21.33c, SHCE 7-1 Bonne Esperance, P.O. Box 8269, Christiansted, USVI 00823 Project Name: 66 ROOM BOUTIQUE HOTEL Date: June 1, 2024 Project Location: 7A Hospital Street, C'sted, St. Croix, USVI 00820 Activity: Drainage Design_Pipe Flood Routing Project #: Sheet #: Engineer: DC Drawing Ref.: Sub Catchment Number CA-9 Total Catchment Area, A acres 0.087 Land Use Percentages A1 (Woodlands) 0 A2 (Pasture, Grass, and Farmland) 0 A3 Bare Earth / Gravel 0 A4 Rooftops 48.3 A5 Impervious Pavements 51.7 A6 SFR 0 A7 MFR 0 A8 Commercial & Industrial 0 Total 100 OK Weighted Average Runoff Coeff. 0.95 C = CiAi/A Rainfall Intensity in/hr 4 Peak Flow, Q ft3/s 0.33 Q = CIA Total Rainfall Volume ft3 7140.96 Drainage Pipe Sizing Pipe Material HDPE Mannings No., n 0.012 Sec. 3.6.4, Drainage Manual Pipe Dimension, D in 16.00 Pipe Slope, S ft/ft 0.0125 Flow Velocity ft/s 6.66 OK V= 0.590/n x D2/3 x S1/2 , eqn. 21.33b, SHCE Full Flow Pipe Capacity ft3/s 9.29 OK Q= 0.463/n x D8/3 x S1/2 , eqn. 21.33c, SHCE 7-1 Bonne Esperance, P.O. Box 8269, Christiansted, USVI 00823 Project Name: 66 ROOM BOUTIQUE HOTEL Date: June 1, 2024 Project Location: 7A Hospital Street, C'sted, St. Croix, USVI 00820 Activity: Drainage Design_Pipe Flood Routing Project #: Sheet #: Engineer: DC Drawing Ref.: Sub Catchment Number CA-10 Total Catchment Area, A acres 0.325 (includes contributing areas from CA-1, CA-2 & CA-3) Land Use Percentages A1 (Woodlands) 0 A2 (Pasture, Grass, and Farmland) 7.4 A3 Bare Earth / Gravel 32.6 A4 Rooftops 29.8 A5 Impervious Pavements 30.2 A6 SFR 0 A7 MFR 0 A8 Commercial & Industrial 0 Total 100 OK Weighted Average Runoff Coeff. 0.75 C = CiAi/A Rainfall Intensity in/hr 4 Peak Flow, Q ft3/s 0.97 Q = CIA Total Rainfall Volume ft3 20998.22 Drainage Pipe Sizing Pipe Material HDPE Mannings No., n 0.012 Sec. 3.6.4, Drainage Manual Pipe Dimension, D in 12.00 Pipe Slope, S ft/ft 0.01 Flow Velocity ft/s 4.92 OK V= 0.590/n x D2/3 x S1/2 , eqn. 21.33b, SHCE Full Flow Pipe Capacity ft3/s 3.86 OK Q= 0.463/n x D8/3 x S1/2 , eqn. 21.33c, SHCE 7-1 Bonne Esperance, P.O. Box 8269, Christiansted, USVI 00823 Project Name: 66 ROOM BOUTIQUE HOTEL Date: June 1, 2024 Project Location: 7A Hospital Street, C'sted, St. Croix, USVI 00820 Activity: Drainage Design_Pipe Flood Routing Project #: Sheet #: Engineer: DC Drawing Ref.: Sub Catchment Number CA-11 Total Catchment Area, A acres 0.907 (includes contributing areas from CA-1, CA-2, CA-3, CA-4, CA-5, CA-6, CA-7, CA-8 & CA Land Use Percentages A1 (Woodlands) 0 A2 (Pasture, Grass, and Farmland) 3.6 A3 Bare Earth / Gravel 13.9 A4 Rooftops 44 A5 Impervious Pavements 38.5 A6 SFR 0 A7 MFR 0 A8 Commercial & Industrial 0 Total 100 OK Weighted Average Runoff Coeff. 0.86 C = CiAi/A Rainfall Intensity in/hr 4 Peak Flow, Q ft3/s 3.12 Q = CIA Total Rainfall Volume ft3 67428.99 Drainage Pipe Sizing Pipe Material HDPE Mannings No., n 0.012 Sec. 3.6.4, Drainage Manual Pipe Dimension, D in 18.00 Pipe Slope, S ft/ft 0.01 Flow Velocity ft/s 6.44 OK V= 0.590/n x D2/3 x S1/2 , eqn. 21.33b, SHCE Full Flow Pipe Capacity ft3/s 11.38 OK Q= 0.463/n x D8/3 x S1/2 , eqn. 21.33c, SHCE 7-1 Bonne Esperance, P.O. Box 8269, Christiansted, USVI 00823