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Resolution 298-1981RESOLUTION PNO. 298 -1981 i WHEREAS, the BOARD OF COUNTY COMMISSIONERS OF MONROE COUNTY, FLORIDA, has received an application from City of Key West 5. and WHEREAS, in compliance with State Statute, it is necessary as part of the permitting procedure to read the following Biological Assessment into the Record, as follows: The applicant proposes the excavation of the terminal 1080 feet of an existing spoil bank, involving approximately 3250 cubic yards landward of MHW and 420 cubic yards waterward of MHW. Removal will be performed by backhoe and all spoil from the removal will be trucked to Key West's sanitary landfill site. Length of the entire spoil bank is approximately one-half mile long. The original application submitted called for the excavation of this entire spit down to the MLW line (approxi.amtely three feet down from the existing elevation). The most recent application calls for ex- cavation of one half of the spit'(approximately one quarter of a mile) to a depth of one foot below MLW. The width of the spoil bank averages about 30 feet. A1-1 presently existing mangroves on the spoil bank will remain. The applicant has additionally proposed the excavation of a circula- tion cut towards the base of the spoil bank. This cut will be 30 feet wide and -2 feet deep (MSL). This excavation will involve approximately 130 cubic yards. The sides of the circulation cut will be ripr.apped as will an approximate 50 foot long strip of submerged land running parallel to the spoil bank on the north side. The material to be removed is,compacted marl. The purpose of this project is to increase water circulation and to provide fill mater- ial for the sanitary landfill site. Silt screens will be utilized during operation. The project site is located on the eastern shoreline of Stock Island, south of, but adjacent to, U.S. #,1 and extending into Boca Chica Channel, which connects the Gulf and the Atlantic. The channel from which the existing spoil bank was dredged connects a laroe marina with Boca Chica Channel. On the other side of this channel, a much smaller amount of spoil was deposited. For the most part, the waters in the vicinity of the spoil bank are shallow and display soft bottoms with seagrasses. To the south of the spoil bank and in order of their occurence is a trailer park,a campground, a boat manufacturing facility, a commer- cial fishing marina and a fish house. Offshore of this general area are a good many free floating liveaboard boats and as many sunken derelict boats. The spoil bankin question was deposited before permitting requirements, probably for the purpose of establishing dredge equipment access. Although eroded somewhat on the north side due to boat wake, it re- mains relatively intact and i,s presently being used by many of the liveaboard boat residents for mainland access. Page -1- 1 ' • City of Key West Dredge spoil removal from Boca Chica Bay Page -2- On the northern perimeter of this spoil bank,beginnina at the base and working from west to east; the shoreline retains a somewhat barren, rocky littoral shelf that drops off into channel depths of about -8 feet MLW. No emergent shoreline vegetation exists on this side of the bank. Further to the east and still on the same side, a good many hard bottom -associated organisms were observed such as sponges (Haliclona rubens), starfish (Echinaster sentus), thin shelled oysters (Isognomon sue, and calcareious algaes (Halimeda sp.). In general, the bottom becomes rockier with more carbonates to the eastern end of the spoil bank, in contrast to looser, finer sediments near the basal end which supports a dominant growth of green algae (Batophora sp.). Channel depths seem to stray away from the spit toward its end. In these wider, shallow areas, turtlegrass (Thallass.ia testudinum) and shoalweed (Halodule wrightee) have become extablished, continuning around the end of the spit and for the entire length of the southern perimeter of the spit below MLW. Mixed in with these seagrasses on the southernside are green algaes (Penicillus sp.) and brown algaes (Garcilaria sp.). The southern shoreline has a good many derelict and abandoned vessels which have been left or washed up onto the spit. Towards the end of the spoil bank,buttonwood (Conocarpus erecta), and white mangroved (Laguncularia racemosa) are the dominant speicies contained within a scattered and patchy mangrove fringe. This man gove fringe is most distinguished over the terminal and basal 400 feet of the spoil bank. The basalmangrove fringe is made up primarily of black mangoves (Avicenn'ia germinans) and red mangroves (Rhizophora mangle) and is lusher, denser, an-d more submergent in nature than the terminal man- grove fringe. This is due greatly to the higher -degree of organic and detrital accumulation along this stretch of shoreline. Within the mangrove fringe on the south side of the spoil bank, a considerable amount of trash, garbage and debris has been deposited and accumulated. If all excavation is done above MLW (on a horzontal plane) very little established benthic flora will be destroyed. Although the depth of the excavation many go as low as one foot below MLW (on a vertical plane) it is felt that the bottom contours will find their own levels and that revegetation of seagrasses, algaes and possibly red mangroves will occur in the long term. Retention of the existing mangroves will be difficult to accomplish - in the dredge area, however, this loss should be less than significant considering overall gains in.water dirculation and the restoration of this area to its original nature. An additional positive impact will be the reduction of liveaboards and their associated domestic wastes due to the partial elemination of their mainland access. ty , - 4 City of Key West " Dredge spoil removal from Boca Chica Bay Page -3- BE IT RESOLVED BY THE BOARD OF COUNTY COMMISSIONERS OF'MONROE COUNTY, FLORIDA, that the above Biological Assessment has been read into the record and duly considered pursuant to Florida Statute 2.53.124 by the Board of County Commissioners of Monroe County, Florida, this 19 day of October 1981 at a regularly scheduled meeting (_S e. a 1 ) BOARD 0 ,COUNTY COMMISSIONERS OF MONK COUNTY, IDA— By Mayor AP PR VED AS TO FORM AND GAL SUFFICIENC A ®y Air 011ke 'BOARDfOFCOUNTY COMMISSM WilhelrnA Harvey, District 1 Curt-glaif,:District 2 Mayor Protem Jerry Hernandez, Jr., District 3 MAYOR George E. Dolezal, District 4 Ken Sorensen, District 5 21 s `'M OUNV o MONROE KEY WEST, FLORIDA 33040 (305) 294-4641 Monroe County Legal Department Key West, -Florida 33040 oM: Henry F. Weinkam, Director Building, Planning & Zonin( P.o. Box Room 205 Wing I Public Service Buildinc Stock 'Island, Florida 33040 I, the undersigned, do hereby attest that all date . and information is complete in the package of the applicant as follows: Certificate of Complete Enclosures v 1. Resolution 2. Permit 3. Application for Permit, 4. Site Plan 1/ 5. Location Map !/ 6. County Biologist Report 7. DER Assessment V DATE g- 02 3 a % i PrxTRTW M _�n k�2&dvtD SEP 23 1981 R CO'IrffY ATTY. " MONROEt PLANNING, BUILDING & ZONING DEPA=IENT PERN,1IT ' PER1,1IT FOR COUNTY'\'\ EXCAVATION, THE DEPOSIT OF NO. >� FILL, OR STRUCTURAL ACTIVITIES IN THE WATERS OR WETLANDS OF MONROE COUNTY 1) Property owners name & mailing address 2) Date FOR DEPART`1ENT USE ONLY City of Key West Aug. 12, 1981 Post Office Box 1550 Resolution No. Key West, Fla. 3304-0 3) Phone number (305) Date: 294-3721( 4) Contractor or agent's name, mailing address & phone number KeyCology, Inc. 414 Simonton Street ` Key West, Fla. 33040 (305) 294-87.19 5) Legal description of property: Section 1� 5 f 3 h Key Stock Island Subdivision N/ A Township 6716 Lot Unrecorded Block N/A Range 2.S, Street, road Laurel or mile marker Avenue Volume of material: dred ed/excavated filled deposited ri o•-rap 420c•y• 3250 c•y• 35 c.y. 0 c.y. waterward landward waterward landward of M.H.W. of 11.H.W. of M.H.W. of 1I.H.W. ZONING: PURPOSE: - Cost of Permit Estimated cost of Construction Approved by Chairman BOARD OF COU:'TY COiNISSIOJNERS OF ?fONROE COUNTY, FLORIDA Biologist Comments - Restrictions or Special Conditions if any: APPROVAL Cony in File Date Builu"Ing Ot _Fi cial KgyCo9®9y, InC• 414 Simonton St. Key West, FL 33040 294-8719 & 296-2008 August 12, 1981 Mr. Robert Dennis Building Dept., Monroe County Public Services Building Wing II, Stock Island Key West, Florida 33040 Dear Bob: In reference to your letter of August loth: 1. The limit of the work for removal fill will be 1,080 feet. 2. The purpose for the circulation cut was to allow water flow through the existing spoil bank as Mrs. Capps, the adjacent property owner to the south, requested that modification, and it was agreed to by all the agencies as well as property owners. Therefore, the reason for leaving the remaining,part of the spoil bank was requested by Mr. Boog Powell of the Marina as they wished to maintain the ex- isting spoil bank - breakwater - as it would keep floating debris out of - their marina. 3. Enclosed is the biological report from D.E.R. as you requested. As to the details of the circulation cut, I would suggest that you contact John Myers. Please continue processing our application with this data and try to ex- pedite it for us, as this fill is drastically needed to save the City of Key blest on fill requirements at the Stock Island dump site. Also enclosed is a detail of the cross-section of the circulation cut. We are awaiting our permit to proceed. Sid gerely, LA ./`fd'p h a rt EnvifOnmental Planner LH KAs� Encl ures Ms 44 - ay, n C. 414 Simonton St. Key West, FL 33040 294-8719 & 296-2008 E_ p E_ p_ To ra OP FZ-[P-'ZAP -TC) BE a \Af A,FZp CDP M.H 'IN V,-/A-TE-P-WAP-V (DP M.N.W.REENS T� BE OrILI-Z-Er->, "'5c N C . 7 ttg '46 V-_ i� L f KEY I 'L- ' i • ,': F I �1e, F•I � � 1 � � � In C% 414 Simonton S1. Key Wesl, FL 33040 294-8719 t 246-2008 _ f ) T�/PIGAL- CTZOSS •.Spot L_ , .I��Ni< '�>^ it I 507 \' 0&�F tnn o ESQ-ABLtSN�D �/EC�ETY.lonl N :,. .. !�!O SHaLt_ S� REMOVI=D - —B � - � • . ' E pFzoPos�� CI�cuLfi�TlofJ CUT o pr 111V--A 0 r; OT `T-V SZ6�'D 1T`/ sGR1=ENS _ SHAL •��' � •. A. , • t � o �Q Q � C2:� -7` 4,1 PLAN o 7 ? Qo 4p ti SALE p _L0071:U400, == V ' _I � PROPOSED REMOVAL OF SPOIL BATIK tPOSE: Increase teation �l )ATUM Me )DJACENT PROPER St�v "' - R lJN IN: Boca Chi ca Bay 81 AT: Stock Island +, COUNTY OF: Monroe - lanell cI I A•1 is 01 f 10l'i tin }•1arieta APPLICANT: City of Key West MIL1 1 0F t•;� 1 i --- OARD OF COUNTY COMMISSIONER Ji&lmina Harvey, District-1 ;urt•Blair, District 2 Aayor Protem Jerry Hernandez, Jr., District 3 AAYOR George E. Dolezal, District 4 :en Sorensen, District 5 OUNTY 0' MONROE KEY WEST, FLORIDA33040 z (305) 294-4641 August 10, 1981 OFFICE O Build epartment Public Service Bldg. Wing II P.O. BOX Stock Island Key [lest, FL 33040 'P Mr. Lynn Kephart KeyColooy, Inc. 414 Simonton St. Key West, FL 33040 Re: City of Key West; Spoil bank removal. Dear Lynn: letter of July 16, 1981, concerning Regarding„ yo11r the following items require modification of this project, your attention: 1. will all of the last 1,080f ft. of the bank be removed or only the 540 ft. indicated in your drawing, 2. Purpose and reason for the circulation cut and modification for less spoil removal, and . bioreport on 3. Dept. Environ. Re_ the circulation cut. As soon as I hear from you I will continue processing the requested modifications. Please Barite or call me if you have any questions. Sincerely, Robert Dennis Environmental Biologist RD/jf TOPS, FORM 3397 LITHO 1= 1 DEPARTMENTAL CORRESPONDENCE DATE Sppterlher 15, 1981 SUBJECT City of. Pey ;-Test; Dredge sno�il removal from Boca Chica Bay, DEP'T Planning, Building & Zoning FROM Robert Dennis, F.nviron. Biol. �A�� DEP'T Planning, Building; & Zoning; LEGAL TWSP 67/68S, RGE 25E, SECT 35/36 Spoil bank extending..off:shore from - Laurel Avenue in an easterly direction, Stock .Island. INTRODUCTION: This project is to be reviewed by the Monroe County Board of Commissioners in accordance with Chapter 19-111(a)(2) and (b)(4). DISCUSSION: The City of Kev West has requested approval to modify their original application which was approved by the Board of Commissioners on July 28, 1981. Instead of removing the entire spoil bank, only the terminal 1,080 ft. or approximately 3,670 c.y. (see attached DER report) w4ll be excavated. In addition, a circulation cut will be dredged near the center of the- remaining; spoil bank. According to the DER report, the cut will be 30 ft. wide and -2 ft. `iSL (approximately 130 c.y. of fill will be removed). All dredging will go to the orininal depth and contour of the Bay bottom. Furthermore, rip -rap will be placed along the sides of the circulation cut and a 50 ft. long x 3 ft. wide breakwater, across the northern opening of the cut, will be constructed. Turbidity curtains will be used during excavation. EVALUATION: The proposed activity is not expected to have any long-term environmental impacts. RECO'1;1ENDATION: Approval. NOTES: DER and Army Corps permits are required. RD/jf 3201 GOLF COURSE BOULEVARD PUNTA 3ORDA, FLORIDA 33950 STATE OF FLORIDA DEPARTMENT OF ENVIRONMENTAL REGULATION SOUTH FLORIDA BRANCH OFFICE June 26, 1981 City of Key West c/o Key Cology, Inc. 414 Simonton Street Key West, Florida 33040 Monroe County, File No. 44-4.2433-5E, Spoil Bank Removal Gentlemen: BOBGRAHAM GOVERNOR JACOB D. VAR SECRETARY As we advised you on June 23, 1981 , your application is incomplete without local approval, pursuant to Section 253.124, Florida Statutes, for filling waterward of the existing mean/ ordinary high water line. Please submit the enclosed copy of our biological comments together with your permit application to the Board of County Commissioners/Cit ncil r their authorized permitting authority. Section 253.1 4,, Florida Statutes, states that the county commission/city council ". . .shall have in hand the (biological) report and findings thereof." It further states, "The report shall be read into the record and duly considered at the same meeting at which the board of county commissioners or other authorized body takes final action on the application for permit." You will need to obtain a copy of the minutes of the meeting or an appropriate indication.of the local approval. This letter, resolution or copy of the minutes should be sent to this office. Your application will remain incomplete without valid local approval. If you have any questions concerning this procedure, please contact us. Sincerely, Richard W. Cantrell, RWC/wb Dredge & Fill Supervisor Enclosure DER Form 17-1.122(50) CITY OF KEY WEST #44-42433-5E Monroe County - Stock Island' Page Two A. The applicant proposes the excavation of the terminal 1080 feet of an existing spoil bank, involving approximately 3250 cubic yards landward of HM4 and 420 cubic yards waterward of MHW. Removal will�be performed by backhoe and all spoil from the removal will be trucked to Key West's sanitary landfill site. Length of the entire spoil bank is approximately one-half mile -long. The original application submitted called for the excavation of this entire spit down to the ML[J line (approximately three feet down from the existing elevation). The most recent application calls for excavation of one half of the spit (approximately one quarter of a mile) to a depth of one foot below MLW. The width of the spoil bank averages about 30 feet. All presently existing mangroves on the spoil bank will remain. The applicant has additionally proposed the excavation of a circu- lation cut towards the base of the spoil bank. This cut will be 30 feet wide and -2 feet deep (MSL). This excavation will involve approximately 130 cubic yards. The sides of the circulation cut will be riprapped as will an approximate 50 foot long strip of submerged land running parallel to the spoil bank on the north side. The material to be removed is compacted marl. The purpose of this project is to increase water circulation and to provide fill mater- ial for the sanitary landfill site. Silt screens will be utilized during operation. B. The project site is located on the eastern shoreline of Stock Island, south of, but adjacent to, U.S. ;rl and extending intlo'Boca Chica Channel, which connects the Gulf and the Atlantic. The channel from which the existing spoil bank was dredged connects a large marina with Boca Chica Channel. On the other side of this channel, a much smaller amount of spoil was deposited. For the most part, the waters in the vicinity of the spoil bank are shallow and display soft bottoms with seagrasses. To the south of the spoil bank and in order of their occurence is a trailer park, a campground, a boat manufacturing facility, a commercial fishing marina and a fish house. Offshore of this general area are a good many free floating liveaboard boats and as many sunken derelict boats. The spoil bank in question was deposited before permitting require- ments, probably for the purpose of establishing dredge equipment R • a CITY OF KEY WEST #44-42433-5E Monroe County - Stock Island' Page Three access. Although eroded somewhat on the north side due to boat wake,,it remains relatively intact and is presently being used by many of the liveaboard boat residents for mainland access. C. On the northern perimeter of this spoil bank, beginning at the base and working from west to east, the shoreline retains a somewhat barren, rocky littoral shelf that drops off into channel depths of about -S feet ML14. No emergent shoreline vegetation exists on this side of the bank. Further to the east and still on the same side, a good many hard bottom -associated organisms were observed such as sponges (Haliclona rubens), starfish (Echinaster sentus), thin shelled oysters Isognomon sp.), and ca careous algaes (Halimeda sp.). In general, the bottom becomes rockier with more carbonates to the eastern end of the spoil bank, in contrast to looser, finer sediments near the basal end which supports a dominant growth of green algae (Batophora sp.). Channel depths seem to stray away from the spit toward its end. In these wider, shallow areas, turtlegrass (Thalassia testudinum) and shoalweed (Halodule wrightii) have become established, contin- uing around the end of the spit and for the entire length of the southern perimeter of the spit below 111,14. Mixed in with these seagrasses on the southern side are green algaes (Penicillus sp.) and brown algaes (Cracilaria. sp. ) . The southern shoreline has a good man} derelict and abandoned vessels which have been left or washed up onto the spit. Towards the end of the spoil bank, buttonwood (Conocarpus erecta), and white mangroves (Laguncularia racemosa) are the dominant species contained within a scattered and patchy mangrove fringe. This mangrove fringe is most distinguished over the terminal and basal 400 feet of the spoil bank. The basal mangrove fringe is made up primarily of black mangroves (Avicennia germinans) ane red mangroves (Rhizophora mangle) and is lusher, denser, and more submergent in nature than the terminal mangrove fringe. This is due greatly to the higher degree of organic and detrital accumulation along this stretch of shoreline. Within the mangrove fringe on the south side of the spoil bank, a considerable amount of trash, garbage and debris has been deposited and accumulated. D. If all excavation is done above MLW (on a horizontal plane) very little established benthic flora will be destroyed. Although the depth of the excavation many go as low as one foot below 1-IL14 (on a vertical plane) it is felt that the bottom contours will find 9 r CITY OF KEY WEST w 144-42433i-5E a Monroe County - Stock Island Page Four i their own levels and that revegetation of seagrasses, algaes-and possibly red mangroves will occur in the long term. Retention -of the existing mangroves will be difficult to accomplish in the dredge.area, however, this loss should be less than signifi- cant considering overall gains in -water circulation and the restor- ation of this area to its original nature. An additional positive impact caill be the reduction of liveaboards and their associated domestic wastes due to the partial elimination of their mainland access.