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Task Order No. 10/DSR No. 5B Revised 06/01/2019 REGaMt OCT 1 1 2019 13y: REVISED TASK ORDER[NU. 0 FFOR DAMAGE SURVEY REPORT(DSRj`NO':5BL: FOR SEDIMENT REMOVAL SERVICES BETWEEN MONROE COUNTY AND ADVENTURE ENVIRONMENTAL, INC. FOR MONROE COUNTY HURRICANE IRMA EWP- SEDIMENT REMOVAL In accordance with the Agreement for Marine Debris and Sediment Removal Services as a result of Hurricane Irma made and entered on the 18th day-of July, 2018, between Monroe County hereinafter referred to as the "County" and Adventure Environmental, Inc. hereinafter referred to as "Contractor". All terms and conditions of the referenced Agreement for:Marine Sediment Removal Services apply to the Task Order, unless the Task Order modifies an Article of the Agreement of which will be specifically referenced in this Task Order and the modification shall be precisely described. This Task Order is effective on the 1st Day of June 2019 and will terminate no later than the 30th Day of June 2019. In accordance with Article II Scope of Basic Services, Paragraph 2.1, the Scope of this Task Order is as follows: The scope of services will include Sediment Removal and Disposal (Load and Haul) of organic, silt and sand from the USDA-NRCS eligible canals within the DSR#_55Vare:a.from :CityEof Maratl%2n. See Exhibit A-1 for work plan and location maps. In accordance with Article VII, Paragraph 7.1 Contract Sum, the Contract Sum of this Task Order is as follows: The Contractor shall be paid based on rates negotiated and agreed upon and shown in the Pricing Schedule in Attachment B of the agreement. The estimated quantities and equipment allocation for the DSR are based upon review of aerial maps, bathymetric surveys, and representative site visits. See Exhibit B-1 for estimated resource allocation and June estimate for DSR#5B. The County shall pay the Contractor a not to exceed amount of Ninc Hundred and Eighty four thousand and Six Hundred and Fift„ and zero-cents ($981,650.00). One-Million and Sixty Nine Thousand and Six Hundred and Fifty and Zero cents ($069.:6.5.0.) f Page 1 of 2 MONROE COUNTY HURRICANE IRMA EWP-SEDIMENT REMOVAL June Pt,2019 ``,,,�Nllalrlr/��''' IN WITNESS WHERE�d %$. �' 0 '�. 4#Sed the Task Order#10 to be executed by its duly authorized represeri °v�r•o.P9 ..q'• (Seal) SEAL ; D = Attest: > _'— CONTRACTOR: � r 99,.E_` ADVENTURE ENVIRONMENTAL, INC. 181 .. 2A , By' 4C-C:e tfie /a o �a /9 By rs- ?Of Date Date C Id- ('c6►.hi:Sra r Title Print a itle WOOD ENVIRONMENT AND INFRASTRUCTURE SOLUTIONS,INC. By: / 06/11/2019 � Date CITY OF MARATHON DEPUTY CITY MANAGER By: Georg Game 1—J1049/51 MONROE COUNTY DIRECTOR SUSTARNABILITY AND PROJECTS - 301(ek (get-AV EV: / I. October 5, 2019 Rhonda Haag Date MONROE COUNTY COUNTY INISTRATOR MUNROE COUNTY ATTORN Y A P VED AS TO ORtI By: L/l 10 1 Date: I — 1 �a Roman Gastesi Date l�� Page 2 of 2 MONROE COUNTY HURRICANE IRMA EWP-SEDIMENT REMOVAL June 1�,2019 EXHIBIT A-1 Work Plan and Location Maps • f e, ; . BOARD OF COUNTY COMMISSIONERS Coun of Monroe Y ,4, Mayor Sylvia Murphy,District 5 "� Mayor Pro Tem Danny Kolhage,District 1 The Florida Keys Commissioner Michelle Coldiron,District 2 Commissioner David Rice,District 4 Commissioner Heather Carruthers,District 3 Proposed Work Plan for the Monroe County Hurricane Irma EWP Canal Sediment Removal Prepared for: USDA/NRCS 2614 NW 43rd Street Gainesville, FL 32606 Prepared by: Wood Environment & Infrastructure Solutions, Inc. 5845 NW 158th Street Miami Lakes, Florida 33014 Grant Agreement Award No.: NR184209XXXXCO27 I. INTRODUCTION Provide all labor, supervision, engineering, materials, supplies, equipment, tools, transportation, surveying, layout, and protection for the proper execution and completion of all the work in accordance with the Contract Documents. The Work shall include but not be limited to that shown on the plans and detailed in the quality assurance plan and technical specifications. All work shall be conducted in accordance with all applicable local, state, and federal standards and regulations. II. SCOPE OF WORK The Scope of Work for the canal sediment removal activities located in DSR#3 (Big Pine Key), DSR#5A (Islamorada), and DSR#5B (Marathon) consists of mechanical dredging to remove the sediment accumulation relating to Hurricane Irma. The utilization of the mechanical system will result in the collection of a slurry from the canal bottom comprised of sediment and saltwater. The vessel-based dredge excavates and places the material in a dedicated dewatering area. The contractor will utilize a passive dewatering system to handle the dredged material. The dewatering system will be located either in the canal on the barge or within the upland staging area adjacent to the canal. Once dewatered the material will be transported to an approved upland disposal location dependent on the chemical characteristics of the material. The Contractor must install temporary construction fencing, consisting of jersey barriers and construction fencing or equivalent, around the staging area(s) and remove the fencing upon completion of the project. The Contractor shall return all staging area property to its original condition or better which includes re-grading and re- sodding of disturbed areas. The County will obtain the USACE, FDEP, FKNMS, and County permits. The Contractor will be responsible to obtain any other necessary permits not identified by the Engineer. Use of private homeowner land may require a Temporary Use approval. The Contractor is required to submit a Construction Methodology Plan (CMP) to Monroe County, including a Maintenance of Traffic (MOT) Plan (including a truck hauling plan) for approval prior to initiation of construction. Given the dense layout of the communities surrounding the project area, the Contractor shall be cognizant of the logistical limitations of dewatering the dredged material and transporting fill material in the space provided in the designated staging areas. Additionally, the Contractor shall be aware of the necessity to take care during the removal of the sediment so as to not damage the boat lifts present in the canal or any other privately-owned property. Damage caused by contractor to privately owned property will be a liability of the Contractor not the engineer or the County. Florida-EWP Page 2 of 6 April 2019 The Contractor shall be cognizant that the information provided regarding surface elevations on the construction documents is an approximate estimate, and that even though the sediment thickness values are a direct observation; no guarantee is made to the accuracy of the data. Therefore, the contractor shall obtain a pre-bathymetric survey to compensate for any potential errors or lack of precision in the presented sediment volume and surface elevation information. The sequence of Major Activities are as follows: 1) Relocation of recreational vessels (if needed) 2) Inspection of the canal for the presence of T&E species 3) Establishment of the dewatering staging area 4) Mobilization of the mechanical dredge to the project site at high tide 5) Installation of the turbidity barrier at the mouth of the canal 6) Mechanical dredging of sedimentation 7) Discharging of low turbidity effluent back into the canal 8) Disposal of dewatered dredge material 9) Sponsor monitoring firm will confirm that the contractor has dredged to the prescribed elevations as shown on the plans and specifications 10)Allow settlement of canal water to ensure turbidity at canal mouth does not exceed 0 NTUs above background. 11)Demobilization of dredge 12)Restoration of the dewatering staging area 13)Remove erosion and sediment control measures. III. MATERIAL TO BE REMOVED The material to be removed is generally comprised of sand and silt. The Contractor shall complete physical and chemical analysis on the material prior to construction commencement to determine the most efficient and economical methodology for the removal and disposal of the material. The Contractor and Engineer will communicate on the quantity and location of the sediment to be analyzed to ensure it complies with all local, state and federal guidelines. IV. ARTIFICIAL OBSTRUCTIONS The Contractor shall identify all existing utilities on site before construction commencement to ensure no impacts. Additionally, the contractor shall identify and segregate all artificial obstructions. within the canals that may impair the dredge equipment such as vegetative or construction and demolition debris. V. QUANTITY OF MATERIAL The Contractor shall independently estimate the sediment quantities to removed based on the pre-bathymetric survey, plans and the Contractor's independent site investigation of existing conditions. An initial estimate based on limited bathymetric data is shown in the Florida-EWP Page 3 of 6 April 2019 plans for each canal, however this figure should be used as guidance only; actual, estimated volume determination will be the responsibility of the Contractor. Prior to commencement of the sediment removal, the Contractor shall engage a licensed surveyor in the State of Florida to provide a 10-foot by 10-foot bathymetric survey grid of the project area. This will be classified as the pre-bathymetric survey data obtained by the contractor's surveyor. The Engineer will review this data and provide the Contractor with a proposed elevation for dredging limits based on the pre-Irma canal bottom elevations for the project area. The pre-Irma canal bottom elevations will be used as the controlling elevation for the specified area approved for sediment removal The Contractor shall take progress soundings or sweepings to verify compliance with plans, specifications and work plan. The Sponsor will use this data to verify that the Contractor does not dig below the pre-Irma canal bottom elevation. Contractor is responsible for quality control. Sponsor is responsible for quality assurance. On completion of the sediment removal, the Contractor shall engage a licensed surveyor in the State of Florida to provide a 10-foot by 10-foot bathymetric survey grid of the project area using the same locations of the pre-bathymetric survey. This survey data will be classified as the post-bathymetric survey data obtained by the contractor's surveyor. The post-bathymetric survey shall be compared to the pre- bathymetric survey to demonstrate that sediment has been dredged to the pre-Irma canal bottom elevations as shown on the plans. The Contractor is allowed a +/- 6-inches dredging tolerance from the pre-Irma canal bottom elevations. As part of the Quality Assurance process, the quantity of volume removed will be compared to the pre vs. post bathymetric survey analysis and the calculated field volume by the monitor utilizing the capacity of the trucks/roll offs and percentage full of sediment. The volumetric analysis calculation between the pre versus post bathymetric survey, completed by the Sponsor, will be used as the method of measurement and payment. VI. ENVIRONMENTAL PROTECTION REQUIREMENTS The Contractor shall provide and maintain during the life of the contract, all necessary environmental protective measures. The Contractor will comply with Federal, State, and local regulations pertaining to water, air, and noise pollution. VII. DREDGE EQUIPMENT The Contractor shall utilize mechanical dredge equipment to remove the sediment. The Contractor shall be aware that removal rate may be constrained by the sediment dewatering rate and area and shall implement the appropriate equipment accordingly. Florida-EWP Page 4 of 6 April 2019 The Contractor shall maintain the plant, scows, combings, barges, pipelines, and associated equipment to meet the requirements of the work. Immediately repair leaks or breaks along pipelines. Immediately remove dredged material discharged in wetlands or other areas outside of the identified project area due to leaks and breaks. Removal of material shall bring the impacted area back to original condition and shall be conducted at Contractor's expense. Operations shall be immediately halted if a pipeline breaks or a leak occurs. Except where authorized in the plans and specifications, dredge pipelines or open ditches shall not block roads or Rights of Way (ROW) or otherwise interfere with access unless approved. VIII. DEWATERING OF EXCAVATED MATERIAL The Contractor shall implement a passive dewatering system. The passive dewatering system is dependent on the material consistency. The Contractor shall provide the Sponsor a dewatering plan for review and approval. It shall be noted that the final hauling weight of each load (load = sediment + truck + trailer) is not to exceed Standard Highway Loading rates or a gross weight of 11,000 ton/axle, whichever is less. The effluent from the dewatering system will be discharged back into the canal. The Contractor is required to operate the dredging and dewatering operations such that mandated permitted turbidity limits are not exceeded. The State turbidity requirements are 0 NTU increase above background levels in the Florida Outstanding Waters outside the canal mouth. The Contractor will make any required adjustments to the operations to ensure compliance with these limits. The monitor will measure the turbidity throughout the project to ensure compliance with permits using a Hach 2100Q portable turbidity monitor, or equivalent. IX. DISPOSAL OF EXCAVATED MATERIAL The Contractor shall provide for safe and legal transportation and disposal of dredged materials according to plans, specifications and quality assurance plan. The deposit of dredged materials in unauthorized places is forbidden. Spoil material inadvertently spilled on roads, public ROWs and private property shall be promptly removed and the area restored by the Contractor. The dredged material may not be disposed of under an unrestricted use scenario. Therefore, the Contractor shall provide their proposed method of disposal, dependent on the chemical analysis for the dredged material to Engineer and County for approval. The tentative final disposal locations are as follows: Landfill: South Dade Landfill 23707 SW 97th Ave Homestead, FL 33032 Florida-EWP Page 5 of 6 April 2019 Beneficial Reuse: Florida Keys Country Club 4000 Sombrero Blvd. Marathon,Florida 33050-0969 X. MEASUREMENT Surveys prior to Work 1. Prior to commencement of the sediment removal, the Contractor shall engage a licensed surveyor in the State of Florida to provide a 10-foot by 10-foot bathymetric survey grid of the project area. Surveys during Progress of Work 1. Preliminary checks of design depth will be determined by soundings or sweepings taken behind the dredge and barge as the work progresses. The Contractor shall take progress soundings or sweepings to verify compliance with plans, specifications and quality assurance plan requirements. Final Examination and Acceptance: 2. On completion of the sediment removal, the Contractor shall engage a licensed surveyor in the State of Florida to provide a 10-foot by 10-foot bathymetric survey grid of the project area. The post-bathymetric survey shall be compared to the pre- bathymetric survey to demonstrate that sediment has been dredged to the pre-Irma canal bottom elevations as shown on the plans. To assure excavation to the minimum depths, the Contractor is allowed a +/- 6-inches dredging tolerance from the pre-Irma canal bottom elevations so as to not impact hard bottom. Florida-EWP Page 6 of 6 April 2019 I I 2 I 3 I 4 I 6 I 6 I 1 - GENERAL SCOPE OF SITE WORK ' WOOd. FOR USDA NRCS EWP GRANT NO. NR184209XXXXCO27 . SEDIMENT REMOVAL POST HURRICANE IRMA FOR - \ - 10 RESIDENTIAL CANALS IN BIG PINE KEY, CITY OF MARATHON AND VILLAGE OF ISLAMORADA ,R�C„ ,�„B -. _-OCA .- MONROE COUNTY, FLORIDA ` 6 AIIENION IS DIRECTED 10 THE FACT NLAT THESE PLANS WY NAVE KEN CRAW FO IN S1ZL BY REPROIXIC ION. THIS MUST BE CONSIDERED WHEN WINNING SCALD OATH SHEET INDEX DAPRIAND SPECwTA➢ONS TIE PROJECT DEVELOPMENT CODE. 1. SEDIMENT REMOVAL COVER SHEET =3721 Eli PART I MD 2 MONROE COWRY PUBLIC WORDS WNIYL DATED SEPTEMBER 1953: 2. SEDIMENT REMOVAL - CANAL #148 - DSR5A FLORIDA KEYS DEPARTMENT OF MARNNE SANC1DARE"(FFONMS)(MP); 3. SEDIMENT REMOVAL - CANAL #157- DSR5A 11 illx"Ei STEvi Sa A CONF CTHENOMOS RES RC ENE Amu..- 4. SEDIMENT REMOVAL - CANAL #257 -DSR58 5. SEDIMENT REMOVAL - CANAL #268 -DSR58 m 6. SEDIMENT REMOVAL - CANAL #269 -DSR58 CANAL LOCATIONS TABLE `_ 7. SEDIMENT REMOVAL - CANAL #282 -DSR3 CANAL B LATITUDE LONGITUDE r 8. SEDIMENT REMOVAL - CANAL #293 -DSR3 m 1 148 LOVER MATECUMBE KEY 24.869326' -80.704148' 9. SEDIMENT REMOVAL CANAL #297 -DSR3MONROE COUNTY ® 157 LOWER MATECUMBE KEY 24.852399' -80.734650' HURRICANE IRMA - c 10. SEDIMENT REMOVAL - CANAL #299 -DSR3 1.ECEBD EWP-PHASE III 11. SEDIMENT REMOVAL - CANAL #300 -DSR3 ""^ 0 CANAL FOOTPRINTS 257 MARATHON 24.697964' -81.079708' SEDIMENT REMOVAL 12. SEDIMENT REMOVAL DETAIL SHEET BIG PINE KEY (DSR#3) 268 MARATHON 24.691252' -81.079741' LOCATION MAP 269 MARATHON 24.691880' -81.081228' - 282 BIG PINE KEY 24.684035' -81.355360' -jam,:,, ® 293 BIG PINE KEY 24.674409' -81.342066' / ♦s ES ® - 297 BIG PINE KEY 24.673093' -81.340948' �� 299 BIG PINE KEY 24.672419' -81.340753' ` _ 300 BIG PINE KEY 24.671803' -81.339915' •• IEVigUI0 NG DATE HI Nveovm e ® i-m '" .. SUNSHINE 811 CALL BEFORE YOU DIG Jr. 1-800-638-4097 ISLAMORADA (DSR#5A) MARATHON (DSR#5B) 1. CALL 1-800-638-40911110 FULL BUSINESS DAYS(BUT NOT MORE DIAN FM) BEFORE MOND 10 FINHOOT MERE(NIKO FACAJTES(ELECTRIC.GAS, - LOCATION MAP LOCATION MAP TELECOMMUNICOTIONS.CABLE WATER.SEWER)RITE LOCATED. 2. WMT TOO REWIRED TYE FOR THE UTILITIES ON SITE TO BE LOCATED NC MARRED - MRN COLOR-COOED PAINT.FLAGS OR STAKES NC cane,TAT THE SITE HAS ---' KEN LOCATED 3. RESPECT AND PROTECT TIE WRNS CURING THE PROJECT.E MARKS ARE - - DESTROYED.REQUEST A NEW LOCATE TICKET. I 4. CC SAFELY,USING EXTREME CAUTIONMIEN MGM EN GM%RHIN 24 INCHES ON LITTER A P R I L 2019 SEE OF THE MARKS TO AVOID HITTING THE BURIED UMW,LJNFS. A SEDIMENT REMOVAL COVER SHEET 1 OF 12 `F F I I 2 I 3 I 4 I 5 1 6 I • I I 2 I 3 I 4 I 5 I S I f 1, , _ �r , wood. 1i, , ,. _4- ` L..,..... . npAU. - w tii , fsI a log, I �.n,. 1; - CANAL 11257 DSRBSB MARATHON '1 P -iG `1 i T'l: 4 "A"--, 6 v 11 rill wit of MGrraC .01piss - V P��° } ('^--> f.,,o J .I 1 PAt ua PROPOSED SEDIMENT REMOVAL AREA •� .<4 A --� I A .+2+ POTENTIAL UPLAND STAGING AREAS ... S MONROE COUNTY PARCELS. 2010 l . r � _ �� ,� a>-��FLOATING TURBIDITY BARRIER '- •.41 ! I�r i 1 .� - APPROVED SEDIMENT REMOVAL AREA MONROE COUNTY 1. ` * �1 FROM STATION 0+00 TO 1+25 �n O 2018 Mgt *lobe OCNES(2018)Distribution Airbus DSO 1018 HERE I -1 D �_._— HURRICANE IRMA - EWP-PHASE III Sediment Volume SEDIMENT REMOVAL Sediment Removal Acummulation Post Canal 8 DSR M Canal Area(Sq ft.) Area(Sq ft.) Irma(CY) 257 MARATHON 5B 363606.3B 6990.93 258.92 , I.F.Sal21 AP- NO I' PRE HURRICANE IRMA CANAL BOTTOM -z. POST HURRICANE IRMA CANAL BOTTOM B u=II=u= HURRICANE IRMA ---- II` SEDIMENT REMOVAL AREA APPROVED SEDIMENT REMOVAL AREA MLLW ELEVATION(-2.04 FROM STATION 0+00 TO 1+25 FT NAV088) NOTES 1)MEAN LOW LOW WATER(MLLW)ELEVATIONS REFERENCE, FROM NOM TIDE STATION 8723962 ;NED E' 2)ELEVATIONS SHOWN HEREON ARE RELATIvE TO THE NI(NAV ` AMERICAN VERTICAL DATUM OF 1988(NAND 88) 3)THE PROFILE 5 JUST A REPRESENTATION OF THE IMPS TO THE CANAL SYSTEM,IN SOME INSTANCES NOT ALL _rM FINGER CANALS ARE REPRESENTED WITH A CROSS SECTION HOWEVER THE IMPACTS ARE TYPICAL WITHIN EACH 0 100 SEGMENT AND ARE PART OF THE EVALUATION To BE SEDIMENT REMOVAL - ao. .ao Fn'.00 L,A.00 RESTORED. CANAL #257 — A 6 o- I I . I I Faal 4)CONTRACTOR SHALL ENSURE TURBIDITY OUTSIDE CANAL IS DSR58 0 NTU ABOVE BACKGROUND AT ALL TIMES DURING J CONSTRUCTION ACTIVITY R❑SS-SECTI❑N 5)NO CORAL.MANGROVE,SEWORASS.OR HARD BOnoM :MEET I:IJIABEP RI. A IMPACTS ARE PROPOSED FOR THE SEDIMENT REMOVAL 4 OF 12 ACTNMES „HEFT OF :,HEF r, 1 I 2 I 3 I 4 I 5 I B 1 • • 1 I 2 1 3 I 4 L 3 I ! I mil ` _ tN^•_ K,� -i yiT ' ar, �, yL �CANAL r#268 - DSR#58- MARATHON ' litarraiT 1 , i I " �0 wood. - • `f'¢' — —_4_— I 1 APPROVED SEDIMENT REMOVAL AREA - - . Vlti im% r� I -., TO ;1D �,G. FROM STATION 7+00 liar ; r c _ q nilip—'''. —'' MOO ,1911ii:1 _ - , w r901Liais rItaillalkiL Y�• .'\ ! • Ij• _ s(_ I FGFND '..P'A« / `1 _ s ..+' V y' �jl PROPOSED SEDIMENT REMOVAL AREA .„4, - ♦•X•POTENTIAL UPLAND STAGING AREAS .n r'R I. "(I ) MONROE COUNTY PARCELS. 10 f I j J L T {{ FLOATING TURBIDITY A BARRIER20 FittS. 1t. Z ,* MONROE COUNTY -;^.'2I.• ,,osoh Corporation G 2018 DigitalGlobe CCNES(2018)Distribution Airbus DSO 201E HERE ' HURRICANE IRMA- D W EP-PHASE III SEDIMENT REMOVAL Sediment Volume Sediment Removal Acummulation Post Canal N .DSR* Canal Area(Sq ft.) Area(Sq ft.) Irma(CY) 268 MARATHON 58 188742.17 39957 1479.89 f) I FGEND — 10 PRE HURRICANE IRMA 20 CANAL BOTTOM POST HURRICANE IRMA i CANAL BOTTOM -s.. _„_„_„_, HURRICANE IRMA ---. —-.- - _„ =1'=0=00i SEDIMENT REMOVAL AREA B MLLW ELEVATION (-2.04 !TTTTTITT!! !iIIITIT — 1)MEAN LOW LOW WATER(MLLW) ELEVATIONS REFERENCED FROM NOA4 J0 TIDE STATION 8723962 — APPROVED SEDIMENT REMOVAL AREA 2)ELEVATIONS SHOWN HEREON ARE FROM STATION 3�00 TO 7.00 RELATIVE TO THE NORTH AMERICAN e ) 1 VERTICAL DATUM OF 1988(NAND 88) -.-1 _9„ 3)THE PROFILE IS JUST A REPRESENTATION OF THE IMPACTS TO THE CANAL SYSTEM. __—._ IN SOME INSTANCES NOT ALL FINGER CANALS ARE REPRESENTED MOTH A CROSS SECTION HOWEVER THE IMPACTS ARE TYPICAL WITHIN EACH SEGMENT AND _ ARE PART OF THE EVALUATION TO BE SEDIMENT REMOVAL A s_rr A"'.0o r.�,.AO 5.+.0o s..�no T.�,00 RESTORED. CANAL #268 — 4)CONTRACTOR SHALL ENSURE TURBIDITY DSR5B -.. o ''' • OUTSIDE CANAL IS 0 NTU ABOVE R❑S S—S E C T I❑N BACKGROUND AT ALL TIMES DURING CONSTRUCTION ACTIVITY o- I . I . I Fr SHEET NUMBER- FI:'. / 5)NO CORAL.MANGROVE,SEAGRASS.OR 5 OF 12 HARD BOTTOM IMPACTS ARE PROPOSED FOR THE SEGMENT REMOVAL ACTIVITIES ,HEFT OF CHESTS I I 2 I 3 I 4 I 5 I II I • • I I 2 I 3 I 4 I 5 I 5 I Ia. , iiii APPROVED SEDIMENT REMOVAL AREA \ so FROM STATION 0+60 TO 6+00 "e #, " • ! CANAL #269 - DSR#5B - MARATHONi'it ''''l I =r I, 1 • ! wood , ' r .- )/ Al- ,. - 1 ,...0- ._. i _ ! 1 _ — e s y r 4i.400. e ., iiit , " „ fw Oh ~ Atilt. 1 y )FGFND / 1/ , '' - i �72 PROPOSED SEDIMENT REMOVAL AREA �� •♦♦•P�POTENTIAL UPLAND STAGING AREAS V:�-_� r - •. MO NROE COUNTY PARCELS 2010 • -FLOATING TURBIDITY BARRIER , —_; MONROE COUNTY - �,'.� ' HURRICANE IRMA - C Sediment Volume EVVP-PHASE III Sediment Removal Acummulation Post SEDIMENT REMOVAL Canal# DSR# Canal Area(Sq ft.) Area(Sq ft.) Irma(CV) 269 MARATHON 5B 87894.8 53422.1973 5935.80 — I FGFN A' ', '', -Ivo- - PRE HURRICANE IRMA. CANAL BOTTOM _2, POST HURRICANE IRMA CANAL BOTTOM — II 111_111_ ' _-I1_-111=111— -I _1 - 1_ ATT 3.-Z_41 _•11T1 1 TTT_-ali �I Ialli 1T — _===_i= HURRICANE IRMA T a • ,ll-I1I 11_111E11=111H _� II 11-111=11,11=11H11= =1 11 I1I{T11=11=I11_11 111=1H1I_11 SEDIMENT REMOVAL AREA =11 Z_a I ITIa� I I 1lIH 1 II I I -La- � -J,E-III=III-IIHIHIHIII I-ieliEIHIHIHI I-IHI-I 1-IIH11a1F1IHIHIHIH11=11HIH1 YMLLW ELEVATION (-2 04 zTfiT IT --1-1T1 ITiTa 1 ialITITIEJTiT E 1 olio IIaTTEEITfT E-HE I ETI Ti-=-- I aTiETT FT NAVDBB) 11TT=T111=11111=111-�11-111�11=(71-117E71-11tT=71111=111 F11111=F(11111-=1111-1�=1111R=T1I1=11I I-11I1TT=T 11-11�I11=111E11111E111TI-71�11J=111T=(71-Iy1='11�1 I=11-I11=11I 11=11-Iy�I—I1y=1 -II-Iy1=�1-11=111=111= -S. -IL --ll-1 1_I,1L�11� 1 LL.- 11alI=1L-11-�1L11.111 LL�ll LL-ITVJ1 J�_W_L t<1•J11�TI-71 I1—I IFa I E1 TL NOTES)MEAN LOW LOW WATER(MLLW)ELEVATIONS - -"•=111-11L IT —1- REFERENCED FROM NOA4 TIDE STATION -4 co- T- 1 - 2)ELEVATIONS SHOWN HEREON ARE REIATNE L , -T,OD- _ TO THE NORTH AMERICAN VERTICAL DATUM - _ APPROVED SEDIMENT REMOVAL AREA OF 1988(NAVD 88) - FROM STATION 0+60 TO 6.00 ie-F. -e'er 3) OFE PROFILE IS THE IMPACTSlTO TTHE CANAL LSENTTEM IN __ _ - SOME INSTANCES NOT ALL FINGER CANALS _ ARE REPRESENTED WITH A CROSS SECTION 5.9u- HOWEVER THE IMPACTS ARE TYPICAL WITHIN • EACH SEGMENT AND ARE PART OF THE° SEDIMENT REMOVAL A 1 1 I I I I I I EVALUATION TO BE RESTORED. 100 61.00 1 1.06.00 2.110.00 3.�06 “0I0.00 54000 6.00.00 CANAL #269 - 4)CONTRACTOR SHALL ENSURE TURBIDITY t T , I,- ® ROSS-SECTION SI CANAL IS L0 NIM ABOVE DSRSB OUTSIDE AT ALL TIMES DURING CONSTRUCTION ACTIVITY --1 5)NO CORAL,MANGROVE.SEAGRASS.OR 6 OF 12 HARD BOTTOM IMPACTS ARE PROPOSED FOR THE SEDIMENT REMOVAL ACTIVITIES 1 I 2 I 3 I 4 I 5 I 8 I • 1. I. 2 I .\ 3 I 4 ..1 5 • I 6 I • • • .. wood. EXISTING SEAWALL EXISTING SEAWALL EITHER CONCRETE - EITHER CONCRETE ENVIRONMENT,e./ OR EARTHEN OR EARTHEN • Ir1ER ASTRUOTURE SOLO TI05,INC. 5,345 NW 158TH STREET . MIAMI LAKES,FL 33014 TEL. (305)826-5586 • . N. . D �—MEAN LOW WATER ELEVATION 1— — L— • I�I"�I i \ POST HURRICANE IRMA GRADE I -i I=ifi ETTaT_-=11=1 •OF CANAL BOTTOM • .)III I�III�11 I HURRICANE IRMA • - PRE HURRICANE IRMA GRADE SEDIMENTATION IMPACTS . OF CANAL BOTTOM BEFORE CONSTRUCTION \ PROJECT: • \ MONROE COUNTY i \ HURRICANE IRMA- EWP-PHASE III SEDIMENT REMOVAL EXISTING SEAWALL EXISTING SEAWALL SPONSOR: EITHER CONCRETE EITHER CONCRETE OR EARTHEN OR EARTHEN 'R'S%,i - • REVISIONS B • \ NO. DATE BY APPROVED "—MEAN LOW WATER ELEVATION PRE HURRICANE IRMA GRADE. • — OF CANAL BOTTOM DESIGNED BY. SOC AFTER CONSTRUCTION • DRAWN BO _ GM; CHECKED B'E: _ RH • . APPROVED BY RH DATE. 10/01/201B • SHEET TITLE. SEDIMENT REMOVAL A • DETAIL SHEET ' NAME OF REACH::FLORIDA KEYS CANALS ' . ` . .. • SHEET NUI.IHER• REV. H 12 OF 12 H E E T OF SHEETS f 1 1 2 •I 3 I 4 �. 5 .. I 6 • I. EXHIBIT B-1 Estimated resource allocation and 30 day estimate for DSR#5B MONROE COUNTY CANAL DEBRIS REMOVAL DSR: 5B JUNE 2019 TASK ASSIGNMENT REQUEST CONTRACTOR: AEI DESCRIPTION UNIT UNIT RATE EST. MONTHLY TOTAL QUANTITY 001 MOBILIZATION LS LS N/A 002 NON-HYDRAULIC Cy $150.00 4,750.00 $712,500.00 SEDIMENT REMOVAL 003 TRANSPORT . CY $25.00 4,750.00 $118,750.00 NO ARSENIC OR OTHER Exceedances 004 TIPPING FEE Per $200 317 $63,400.00 truck 005 TURBIDITY BARRIER LF $100.00 500 $50, 000.00 750 $75,000 006 UPLAND DEWATERING DAY $2000.00 20 $40,000.00 SITE 50 $100,000 TOTAL $984, 6:0.00 $1,069,650