big sand lake alt analysis proposal - university of south

1511 East State Road 434, Suite 1005 Winter Springs, FL 32708 PH 407.321.7030 www.geosyntec.com

December 3, 2015 Ms. Elizabeth Johnson Orange County Environmental Protection Division 800 Mercy Drive, Suite 4 Orlando, Florida 32808 Subject: Proposal for Big Sand Lake Watershed Alternatives Analysis Continuing Stormwater Engineering Services Contract Y15-900C Orange County, Florida Dear Ms. Johnson, Geosyntec Consultants, Inc. (Geosyntec) is pleased to provide this proposal for providing our services for the above referenced project. BACKGROUND The Big Sand Lake Watershed study area is comprised of approximately 5400 acres (8.4 square miles) of unincorporated areas of Orange County within Sections 22, 23, 25, 26 ,27, 34, 35, 36 of Township 23 South, Range 28 East and Sections 1, 2, 3, 10, 11, 12, 14, 15 of Township 24 South, Range 28 East. More specifically, the project area is located generally north and west of I-4, south of Pinemount Drive, and east of Apopka Vineland Road. The primary feature in the watershed is Big Sand Lake, which is divided into a north and south lobe. Lakes in the overall watershed that contribute to Big Sand Lake include Little Sand Lake, Lake Serene, Lake Crowell, Lake Willis, Lake Boo Boo, and Spring Lake. The southernmost potion of the watershed associated with Lake Willis is on the east side of I-4. The study area is located within the Shingle Creek Master Watershed, within the jurisdiction of the South Florida Water Management District (SFWMD), within County Commission District 1, and within the County’s Taft, West Orange, and John Young Maintenance Districts. Refer to Figure 1 for a map of the watershed vicinity. Big Sand Lake can outfall to the southeast under I-4 and into the Valencia Control District drainage system and then to Shingle Creek, but only after reaching a stage of 95.3’ NAVD. Big Sand Lake experienced extreme lake levels up to approximately 96’ NAVD in the early 2000s prompting concern over flooding of newly developed areas. In addition, a failure of a berm wall separating Big Sand Lake and Little Sand Lake in 2003 heightened concerns. Recently, the lake level has held steady at around 94’ NAVD, which has caused ongoing concerns regarding the lake stage from residents who live near the lake. Refer to Figure 2 for the existing outfall location. Big Sand Lake has two drainwells – both located on the west side of the north lobe of Big Sand Lake. Both of these wells were constructed to replace previously existing wells on Big Sand Lake and Lake Serene. The locations of the previously existing wells are uncertain; however file documentation substantiated their existence. The previous Big Sand Lake drainwell was replaced in 2004 within an existing Orange County easement on the west side of the lake. Similarly, the previous Lake Serene drainwell was replaced in 2015 within the same Orange County easement. Refer to Figures 1 and 2 for the drainwell locations.

Big Sand Lake & Lake Serene Replacement Drainwells

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Sources: Esri, HERE, DeLorme, Intermap, increment P Corp., GEBCO, USGS, FAO, NPS, NRCAN, GeoBase, IGN, Kadaster NL,Ordnance Survey, Esri Japan, METI, Esri China (Hong Kong), swisstopo, MapmyIndia, © OpenStreetMap contributors, and the GISUser Community

Figure1-1

Watershed Existing Conditions Assessment

Vicinity Map

±0 5,0002,500

Feet

Legend

Study Area

Section-Township-Range

ORANGE COUNTY, FLORIDA

COMMISSIONER DISTRICT 1JOHN YOUNG, TAFT AND WEST ORANGE

MAINTENANCE DISTRICTS

Study Area

4

5

1

2

36

Big Sand Lake Watershed Management Plan

Sources:Background: ESRISection-Township-Range: Orange County,2013Commissioner District: Orange County, 2013Maintenance District: Orange County, 2013

Lake Sloat

Lake Tucker

Lake Serene

Boo Boo Lake

Lake Crowell

Big Sand Lake Alternatives Analysis

LAKE TIBET BUTLER

BIG SAND LAKELAKE SHEENLAKE MABEL

LAKE LOUISE

LAKE WILLIS

LITTLE SAND LAKE

LAKE BLANCHE

LAKE CHASE

SOUTH LAKE

POCKET LAKE

SPRING LAKE

LAKE ELLENOR

LAKE MARSHA

LAKE RUBY

LAKE ISLEWORTH

LAKE SERENE

LAKE BUTLER

LAKE SLOAT

FISH LAKE

SANDY LAKE

LAKE EVE

PALM LAKE

BOO BOO LAKE

LAKE TUCKER

WHISPERWOOD LAKE

LAKE CROWELL

LAKE CHRISTIE

LAKE PAT

LAKE VALERIAN

LAKE WAUKULLA

LOST COVE

LAKE BRENDA LAKE CANE

LAKE PETITE

Orlando

Bay Lake

Lake Buena Vista

Figure1-2

Watershed Existing Conditions Assessment

Site Map

Sources:Aerial: OCPA, 2014Hydrology: Orange County, 2013City Limits: Orange County, 2013

±0 3,5001,750

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LegendStudy Area

Hydrology

City Limits

Bay Lake

Lake Buena Vista

Orlando

Big Sand Lake Watershed Management Plan

Big Sand Lake & Lake SereneReplacement Drainwells

ORANGE COUNTY, FLORIDA

SHINGLE CREEK DRAINAGE BASINSOUTH FLORIDA WATER MANAGEMENT DISTRICT

Study AreaSFWMD

SJRWMD

BIG SAND LAKE

Valencia Water Control District

Piped Outfall from Big Sand Lake

Shin

gle

Cree

k

Valencia Water Control District Drainage Canal

Big Sand Lake Alternatives Analysis

Proposal for Big Sand Lake Alternatives Analysis Orange County, Florida December 3, 2015

As a result of concerns of possible flooding due to high stages in Big Sand Lake, the County is interested in evaluating outfall alternatives to better control stages in the lake. Based on conversations with staff, the County would like to evaluate the potential benefits and possible drawbacks of implementing the 7 following outfall alternatives, either individually or in some feasible combination. 1. Reconstruct and lower the gravity outfall from the Lake 2. Construct a stormwater pump station to pump water from the Lake through the existing lake outfall. 3. Construct additional drainage wells on the Lake. 4. Pump water from Lake into existing drainage wells. 5. Pump water from Lake to rapid infiltration basins (RIB) located on International Drive. 6. Require new developments follow land locked basin criteria. 7. Pump water from Lake to nearby dry retention ponds. A comprehensive drainage and flood level of service (LOS) evaluation of the watershed including floodplain delineation is nearly complete (a draft report was submitted in December 2015 and is being reviewed by the County). The watershed data and existing conditions hydrologic and hydraulic model developed for this study will serve as the technical basis for evaluation of the above listed alternatives. The purpose of the alternatives analysis study is to evaluate the improvement alternatives listed above. The evaluation of each alternative will include a summary of the potential benefits and issues with implementation of each alternative. Criteria for evaluation of the alternatives will include improved LOS, construction cost, maintenance burden, permitting and environmental considerations, and constructability (utility conflicts, easement / land acquisition, etc.). SCOPE OF WORK The consultant will perform the following engineering services under this task order: 1. Alternative 1 – Reconstruct and Lower Gravity Outfall - Evaluate alternative to reconstruct and lower the gravity outfall from the Lake. 1.1. Compile data relevant to outfall alternative 1.2. Develop outfall alternative concept 1.3. Prepare and execute outfall alternative model / calculations 1.4. Evaluate LOS of outfall alternative 1.5. Develop outfall alternative sketch 1.6. Develop outfall alternative cost projection 1.7. Evaluate benefit of outfall alternative 2. Alternative 2 - Pump Water through Existing Outfall - Evaluate alternative to construct a stormwater pump station to pump water from the Lake through the existing lake outfall. 2.1. Compile data relevant to outfall alternative 2.2. Develop outfall alternative concept 2.3. Prepare and execute outfall alternative model / calculations 2.4. Evaluate LOS of outfall alternative


2.5. Develop outfall alternative sketch 2.6. Develop outfall alternative cost projection 2.7. Evaluate benefit of outfall alternative 3. Alternative 3 - Construct Additional Drainage Wells - Evaluate alternative to construct additional drainage wells on the lake. 3.1. Compile data relevant to outfall alternative 3.2. Develop outfall alternative concept 3.3. Prepare and execute outfall alternative model / calculations 3.4. Evaluate LOS of outfall alternative 3.5. Develop outfall alternative sketch 3.6. Develop outfall alternative cost projection 3.7. Evaluate benefit of outfall alternative 4. Alternative 4 - Pump Water to Existing Drainage Wells - Evaluate alternative to construct pump water from the Lake to the existing drainage wells. 4.1. Compile data relevant to outfall alternative 4.2. Develop outfall alternative concept 4.3. Prepare and execute outfall alternative model / calculations 4.4. Evaluate LOS of outfall alternative 4.5. Develop outfall alternative sketch 4.6. Develop outfall alternative cost projection 4.7. Evaluate benefit of outfall alternative 5. Alternative 5 - Pump Water from Lake to Ribs - Evaluate alternative to construct a stormwater pump station to pump water from the Lake to RIBs located on International Drive. 5.1. Compile data relevant to outfall alternative 5.2. Develop outfall alternative concept 5.3. Prepare and execute outfall alternative model / calculations 5.4. Evaluate LOS of outfall alternative 5.5. Develop outfall alternative sketch 5.6. Develop outfall alternative cost projection 5.7. Evaluate benefit of outfall alternative 6. Alternative 6 - Require New Developments Follow Land Locked Basin Criteria - Evaluate alternative to require new developments follow land locked basin criteria. 6.1. Compile data relevant to outfall alternative 6.2. Develop outfall alternative concept 6.3. Prepare and execute outfall alternative model / calculations


6.4. Evaluate LOS of outfall alternative 6.5. Evaluate benefit of outfall alternative 7. Alternative 7 - Pump Water from Lake to Nearby Dry Retention Ponds - Evaluate alternative to pump from Lake to nearby retention ponds alternative. 7.1. Compile data relevant to outfall alternative 7.2. Develop outfall alternative concept 7.3. Prepare and execute outfall alternative model / calculations 7.4. Evaluate LOS of outfall alternative 7.5. Develop outfall alternative sketch 7.6. Develop outfall alternative cost projection 7.7. Evaluate benefit of outfall alternative 8. Evaluate Need for Hydrologic Data in the watershed. Evaluate existing hydrologic data collection and make recommendations for additional hydrologic (ground and surface water) data collection in the watershed that may facilitate operation or better quantify benefit of proposed alternatives. 8.1. Summarize existing data availability

8.2. Evaluate hydrological data needs 9. Draft Alternatives Analysis Technical Memorandum Preparation - Prepare a Draft Alternatives Analysis Technical Memorandum. The report will include narrative sections, exhibits, tables, and backup calculations and/or modeling results sufficient to support the conclusions and proposed recommendations. 9.1. Introduction and Background Narrative 9.2. Alternative 1 Evaluation Narrative 9.3. Alternative 2 Evaluation Narrative 9.4. Alternative 3 Evaluation Narrative 9.5. Alternative 4 Evaluation Narrative 9.6. Alternative 5 Evaluation Narrative 9.7. Alternative 6 Evaluation Narrative 9.8. Alternative 7 Evaluation Narrative 9.9. Alternatives Comparison Narrative 9.10. Hydrologic Data Evaluation Narrative 9.11. Conclusions and Recommendation Narrative 9.12. Prepare Figures and Tables: • Vicinity Map – 11” x 17” format

• Site Map – 11” x 17” format

• Alternative 1 concept maps - 11”x17” format (cross-section and profiles sketches will be developed if necessary)


• Alternative 2 concept maps – 11”x17” format (cross-section and profiles sketches will be developed if necessary) • Alternative 3 concept maps – 11”x17” format (cross-section and profiles sketches will be developed if necessary) • Alternative 4 concept maps – 11”x17” format (cross-section and profiles sketches will be developed if necessary) • Alternative 5 concept maps – 11”x17” format (cross-section and profiles sketches will be developed if necessary) • Alternative 6 concept maps – 11”x17” format (cross-section and profiles sketches will be developed if necessary) • Alternative 7 concept maps – 11”x17” format (cross-section and profiles sketches will be developed if necessary) • Existing vs. Alternative Conditions Node Peak Stage Tables - To include comparisons of node warning stage, description, and peak stage for various modeled alternatives. Flood depth and flood duration will not be summarized. • Alternatives Comparison Matrix 9.13. QA/QC Review - Draft Technical Memorandum 9.14. Print and Assemble Technical Memorandum into Binders 9.15. Compile Electronic Deliverables on Disc

10. Permit Determination Meeting with SJRWMD - Meet with the SJRWMD to discuss permitting concerns of outfall alternatives. 10.1. Coordinate meeting 10.2. Prepare meeting exhibits & agenda – It is anticipated that the meeting exhibits will be adapted from the Draft Technical Memorandum figures and exhibits. 10.3. Attend meeting 10.4. Prepare minutes 11. Coordination Meeting with VWCD - Meet with the Valencia Water Control District (VWCD) to discuss issues and concerns with modifying the flows from Big Sand Lake to VWCD. 11.1. Coordinate meeting 11.2. Prepare meeting exhibits & agenda - It is anticipated that the meeting exhibits will be adapted from the Draft Technical Memorandum figures and exhibits. 11.3. Attend meeting 11.4. Prepare minutes 12. Draft Final Alternatives Analysis Technical Memorandum Preparation - Prepare a Draft Final Technical Memorandum that will incorporate above mentioned SJRWMD and VWCD input as well as any comments from the County on the Draft Technical Memorandum. All collected data, GIS geodatabases, model data, and backup calculations & data will be provided on a disk with the draft final memorandum. 12.1. County Comments Response Letter


12.2. Incorporate County Comments, SJRWMD, and VWCD input into Draft Final Memorandum 12.3. QA/QC Review – Draft Final Memorandum 12.4. Print and Assemble Draft Final Memorandum into Binders 12.5. Compile Electronic Deliverables on Disc 13. Attend and Present Study Findings at Lake Advisory Board Meeting – Includes attendance at meeting and presentation of findings at one (1) Lake Advisory Board meeting. 13.1. Prepare Draft Lake Advisory Board Presentation 13.2. Pre-Board Meeting with County Staff to review and rehearse draft presentation 13.3. Prepare Final Lake Advisory Board Presentation to be submitted to County staff for final approval prior to the Board Meeting. 13.4. Attendance at Lake Advisory Board Meeting by two (2) representatives from Geosyntec. 13.5. Prepare Lake Advisory Board Meeting Summary. 14. Final Alternatives Analysis Technical Memorandum Preparation - Prepare a Final Technical Memorandum incorporating any final comments from the County on the Draft Final Technical Memorandum and input from the Lake Board Meeting. All collected data, GIS geodatabases, model data, and backup calculations & data will be provided on a disk with the final memorandum. 14.1. County Comments Response Letter 14.2. Incorporate County Comments into Final Memorandum 14.3. QA/QC Review - Final Report 14.4. Print and Assemble Final Report into Binders 14.5. Compile Electronic Deliverables on Disc 15. Project Management 15.1. Project setup & administration 15.2. Management of technical staff efforts and general project QA/QC 15.3. Project tracking, schedule updates, project meetings, weekly status reports, etc.

(approximate 9 month duration) SCOPE ASSUMPTIONS 1. The project will be conducted in general accordance with the Stormwater Management Division’s Draft Minimum Requirements for CIP Projects (April 6, 2012). 2. Evaluation will be focused on hydrological improvements from potential alternatives. No pollutant load modeling to quantify the water quality benefits of proposed alternatives will be provided. 3. Watershed Features will be stored and edited within a GIS geodatabase in accordance with the Southwest Florida Water Management District’s (SWFWMD) Geographic Watershed Information System (GWIS) geodatabase format, version 1.6. 4. The Interconnected Channel and Pond Routing Model (ICPR) Version 3.10, with PercPack will be the hydrologic/hydraulic model utilized to analyze the drainage systems for this study.


5. The engineering alternative sketches provided will be conceptual sketches only and are not intended to be used to support a permit application or as construction plans. A scope of work to provide detailed plans to support construction and permitting can be provided separately once an improvement alternative(s) is agreed upon. 6. Engineering services related to environmental assessments, mitigation plans, or surveying of any jurisdictional wetlands are not included in this proposal. 7. Three (3) copies of the Draft and Draft Final Technical Memorandum shall be submitted for review, along with a digital PDF copy on disk with all backup data. Upon final approval, three (3) signed and sealed copies of the Final Technical Memorandum shall be submitted for the County’s’ use, along with a digital PDF copy on disk with all backup data.

BUDGET ESTIMATE Geosyntec proposes to provide the services discussed herein for $78,079.26 on a lump sum basis, in accordance with the terms and conditions specified herein and pursuant to Contract Y15-900C. The lump sum amount is based on our estimated budget for performing these services, which includes the labor, subconsultant fees, and other direct costs necessary to complete the work scope described in the proposal, as detailed in Attachment A. Project efforts will be billed to the County on a lump sum task percent complete basis, based on the major tasks defined in the cost build-up spreadsheet in Attachment A. Individual subconsultant and combined other direct costs will likewise be billed lump sum based on a percent complete basis. Invoices will be structured to list project tasks (and subconsultant / combined other direct cost) with accomplished percent complete, then corresponding budget invoiced, overall budget expended and overall budget remaining. A separate status report will be provided to the County’s project manager providing a narrative of work accomplished supporting the invoice. MINORITY / WOMEN BUSINESS ENTERPRISE PARTICIPATION Geosyntec is not including M/WBE participation from contract subconsultants for this project. Geosyntec’s contract M/WBE subconsultant’s expertise is in the areas of surveying, geotechnical engineering, structural engineering, economics, or laboratory services - none of which are necessary for this project. SCHEDULE Geosyntec can begin work immediately upon receipt of the attached Notice to Proceed. Work will commence and proceed in accordance with the schedule provided in Attachment B.


CLOSURE We appreciate the opportunity to work with the County on this project. Should you have any questions or comments regarding this proposal, please do not hesitate to contact the undersigned at 407-321-7030. Sincerely, Geosyntec Consultants, Inc. Thomas Amstadt, PE, CFM Professional - Project Engineer [email protected] Mark W. Ellard, PE, CFM Associate - Project Manager [email protected] cc: Melissa Lavigne – Orange County Environmental Protection Department Kelly Nowell, PE, CFM, LEED AP – Orange County Stormwater Division Attachments A – Project Budget Estimate B – Subconsultant Proposals C – Project Schedule


ATTACHMENT A

BUDGET ESTIMATE

EXHIBIT A1 - FEE ESTIMATE

Big Sand Lake Alternatives Analysis Date:Orange County, Florida Contract:Clerical Basic Man-hours AverageRate = $193.57 Rate = $142.92 Rate = $100.70 Rate = $84.20 Rate = $72.27 Activity by Hourly Activity Manhours Cost Manhours Cost Manhours Cost Manhours Cost Manhours Cost Amount Activity Rate

1 Alternative 1 - Reconstruct and Lower Gravity Outfall 1.1 Compile data relevant to outfall alternative $0.00 0.5 $71.46 1 $100.70 $0.00 $0.00 $172.16 1.5 $114.771.2 Develop outfall alternative concept $0.00 1 $142.92 2 $201.40 $0.00 $0.00 $344.32 3 $114.771.3 Prepare and execute outfall alternative model / calculations $0.00 1 $142.92 8 $805.60 $0.00 $0.00 $948.52 9 $105.391.4 Evaluate LOS of outfall alternative $0.00 1 $142.92 2 $201.40 $0.00 $0.00 $344.32 3 $114.771.5 Develop outfall alternative sketch 0.5 $96.79 2 $285.84 8 $805.60 $0.00 $0.00 $1,188.23 10.5 $113.161.6 Develop outfall alternative cost projection 0.5 $96.79 2 $285.84 2 $201.40 $0.00 $0.00 $584.03 4.5 $129.781.7 Evaluate benefit of outfall alternative 0.5 $96.79 1 $142.92 4 $402.80 $0.00 $0.00 $642.51 5.5 $116.82SUBTOTAL 1.5 $290.37 8.5 $1,214.82 27 $2,718.90 0 $0.00 0 $0.00 $4,224.09 37 $114.16

2 Alternative 2 - Pump Water through Existing Outfall 2.1 Compile data relevant to outfall alternative $0.00 1 $142.92 2 $201.40 $0.00 $0.00 $344.32 3 $114.772.2 Develop outfall alternative concept $0.00 2 $285.84 2 $201.40 $0.00 $0.00 $487.24 4 $121.812.3 Prepare and execute outfall alternative model / calculations $0.00 2 $285.84 8 $805.60 $0.00 $0.00 $1,091.44 10 $109.142.4 Evaluate LOS of outfall alternative $0.00 1 $142.92 2 $201.40 $0.00 $0.00 $344.32 3 $114.772.5 Develop outfall alternative sketch 0.5 $96.79 2 $285.84 4 $402.80 $0.00 $0.00 $785.43 6.5 $120.842.6 Develop outfall alternative cost projection 0.5 $96.79 2 $285.84 2 $201.40 $0.00 $0.00 $584.03 4.5 $129.782.7 Evaluate benefit of outfall alternative 0.5 $96.79 1 $142.92 4 $402.80 $0.00 $0.00 $642.51 5.5 $116.82SUBTOTAL 1.5 $290.37 11 $1,572.12 24 $2,416.80 0 $0.00 0 $0.00 $4,279.29 36.5 $117.24

3 Alternative 3 - Construct Additional Drainage Wells 3.1 Compile data relevant to outfall alternative $0.00 1 $142.92 2 $201.40 $0.00 $0.00 $344.32 3 $114.773.2 Develop outfall alternative concept $0.00 2 $285.84 4 $402.80 $0.00 $0.00 $688.64 6 $114.773.3 Prepare and execute outfall alternative model / calculations $0.00 2 $285.84 8 $805.60 $0.00 $0.00 $1,091.44 10 $109.143.4 Evaluate LOS of outfall alternative $0.00 1 $142.92 2 $201.40 $0.00 $0.00 $344.32 3 $114.773.5 Develop outfall alternative sketch 0.5 $96.79 2 $285.84 4 $402.80 $0.00 $0.00 $785.43 6.5 $120.843.6 Develop outfall alternative cost projection 0.5 $96.79 4 $571.68 4 $402.80 $0.00 $0.00 $1,071.27 8.5 $126.033.7 Evaluate benefit of outfall alternative 0.5 $96.79 1 $142.92 4 $402.80 $0.00 $0.00 $642.51 5.5 $116.82SUBTOTAL 1.5 $290.37 13 $1,857.96 28 $2,819.60 0 $0.00 0 $0.00 $4,967.93 42.5 $116.89

4 Alternative 4 - Pump Water to Existing Drainage Wells 4.1 Compile data relevant to outfall alternative $0.00 0.5 $71.46 1 $100.70 $0.00 $0.00 $172.16 1.5 $114.774.2 Develop outfall alternative concept $0.00 1 $142.92 2 $201.40 $0.00 $0.00 $344.32 3 $114.774.3 Prepare and execute outfall alternative model / calculations $0.00 2 $285.84 4 $402.80 $0.00 $0.00 $688.64 6 $114.774.4 Evaluate LOS of outfall alternative $0.00 1 $142.92 2 $201.40 $0.00 $0.00 $344.32 3 $114.774.5 Develop outfall alternative sketch 0.5 $96.79 2 $285.84 4 $402.80 $0.00 $0.00 $785.43 6.5 $120.844.6 Develop outfall alternative cost projection 0.5 $96.79 2 $285.84 4 $402.80 $0.00 $0.00 $785.43 6.5 $120.844.7 Evaluate benefit of outfall alternative 0.5 $96.79 1 $142.92 4 $402.80 $0.00 $0.00 $642.51 5.5 $116.82SUBTOTAL 1.5 $290.37 9.5 $1,357.74 21 $2,114.70 0 $0.00 0 $0.00 $3,762.81 32 $117.59

5 Alternative 5 - Pump Water from Lake to Ribs 5.1 Compile data relevant to outfall alternative $0.00 1 $142.92 2 $201.40 $0.00 $0.00 $344.32 3 $114.775.2 Develop outfall alternative concept $0.00 2 $285.84 4 $402.80 $0.00 $0.00 $688.64 6 $114.775.3 Prepare and execute outfall alternative model / calculations $0.00 2 $285.84 8 $805.60 $0.00 $0.00 $1,091.44 10 $109.145.4 Evaluate LOS of outfall alternative $0.00 1 $142.92 2 $201.40 $0.00 $0.00 $344.32 3 $114.775.5 Develop outfall alternative sketch 0.5 $96.79 2 $285.84 4 $402.80 $0.00 $0.00 $785.43 6.5 $120.845.6 Develop outfall alternative cost projection 0.5 $96.79 2 $285.84 4 $402.80 $0.00 $0.00 $785.43 6.5 $120.845.7 Evaluate benefit of outfall alternative 0.5 $96.79 1 $142.92 4 $402.80 $0.00 $0.00 $642.51 5.5 $116.82SUBTOTAL 1.5 $290.37 11 $1,572.12 28 $2,819.60 0 $0.00 0 $0.00 $4,682.09 40.5 $115.61

Task

12/03/15

Y15-900CAssociate Engineer Senior Professional Engineer Senior Staff EngineerProfessional Engineer

Exhibit A1 - Page 1 of 4


Big Sand Lake Alternatives Analysis Date:Orange County, Florida Contract:Clerical Basic Man-hours AverageRate = $193.57 Rate = $142.92 Rate = $100.70 Rate = $84.20 Rate = $72.27 Activity by Hourly Activity Manhours Cost Manhours Cost Manhours Cost Manhours Cost Manhours Cost Amount Activity RateTask

12/03/15

Y15-900CAssociate Engineer Senior Professional Engineer Senior Staff EngineerProfessional Engineer6 Alternative 6 - Require New Developments Follow Land Locked Basin Criteria 6.1 Compile data relevant to outfall alternative $0.00 2 $285.84 1 $100.70 $0.00 $0.00 $386.54 3 $128.856.2 Develop outfall alternative concept $0.00 2 $285.84 2 $201.40 $0.00 $0.00 $487.24 4 $121.816.3 Prepare and execute outfall alternative model / calculations $0.00 1 $142.92 4 $402.80 $0.00 $0.00 $545.72 5 $109.146.4 Evaluate LOS of outfall alternative $0.00 1 $142.92 2 $201.40 $0.00 $0.00 $344.32 3 $114.776.5 Evaluate benefit of outfall alternative 0.5 $96.79 2 $285.84 4 $402.80 $0.00 $0.00 $785.43 6.5 $120.84

SUBTOTAL 0.5 $96.79 8 $1,143.36 13 $1,309.10 0 $0.00 0 $0.00 $2,549.25 21.5 $118.577 Alternative 7 - Pump Water from Lake to Nearby Dry Retention Ponds 7.1 Compile data relevant to outfall alternative $0.00 2 $285.84 4 $402.80 $0.00 $0.00 $688.64 6 $114.777.2 Develop outfall alternative concept $0.00 2 $285.84 4 $402.80 $0.00 $0.00 $688.64 6 $114.777.3 Prepare and execute outfall alternative model $0.00 2 $285.84 8 $805.60 $0.00 $0.00 $1,091.44 10 $109.147.4 Evaluate LOS of outfall alternative $0.00 1 $142.92 2 $201.40 $0.00 $0.00 $344.32 3 $114.777.5 Develop outfall alternative sketch 0.5 $96.79 2 $285.84 4 $402.80 $0.00 $0.00 $785.43 6.5 $120.847.6 Develop outfall alternative cost projection 0.5 $96.79 2 $285.84 4 $402.80 $0.00 $0.00 $785.43 6.5 $120.847.7 Evaluate benefit of outfall alternative 0.5 $96.79 2 $285.84 4 $402.80 $0.00 $0.00 $785.43 6.5 $120.84

SUBTOTAL 1.5 $290.37 13 $1,857.96 30 $3,021.00 0 $0.00 0 $0.00 $5,169.33 44.5 $116.168 Evaluate Need for Hydrologic Data8.1 Summarize existing data availability $0.00 4 $571.68 2 $201.40 $0.00 $0.00 $773.08 6 $128.858.2 Evaluate hydrological data needs 2 $387.14 4 $571.68 $0.00 $0.00 $0.00 $958.82 6 $159.80

SUBTOTAL 2 $387.14 8 $1,143.36 2 $201.40 0 $0.00 0 $0.00 $1,731.90 12 144.3259 Draft Alternatives Analysis Technical Memorandum Preparation 9.1 Introduction and Background Narrative $0.00 0.5 $71.46 2 $201.40 $0.00 $0.00 $272.86 2.5 $109.149.2 Alternative 1 Evaluation Narrative $0.00 2 $285.84 6 $604.20 $0.00 $0.00 $890.04 8 $111.269.3 Alternative 2 Evaluation Narrative $0.00 2 $285.84 6 $604.20 $0.00 $0.00 $890.04 8 $111.269.4 Alternative 3 Evaluation Narrative $0.00 2 $285.84 6 $604.20 $0.00 $0.00 $890.04 8 $111.269.5 Alternative 4 Evaluation Narrative $0.00 1 $142.92 4 $402.80 $0.00 $0.00 $545.72 5 $109.149.6 Alternative 5 Evaluation Narrative $0.00 2 $285.84 6 $604.20 $0.00 $0.00 $890.04 8 $111.269.7 Alternative 6 Evaluation Narrative $0.00 1 $142.92 4 $402.80 $0.00 $0.00 $545.72 5 $109.149.8 Alternative 7 Evaluation Narrative $0.00 2 $285.84 8 $805.60 $0.00 $0.00 $1,091.44 10 $109.149.9 Alternatives Comparison Narrative $0.00 2 $285.84 4 $402.80 $0.00 $0.00 $688.64 6 $114.779.10 Hydrologic Data Evaluation Narrative $0.00 2 $285.84 2 $201.40 $0.00 $0.00 $487.24 4 $121.819.11 Conclusions and Recommendation Narrative $0.00 1 $142.92 4 $402.80 $0.00 $0.00 $545.72 5 $109.14Vicinity Map – 11”x17” $0.00 0.25 $35.73 0.5 $50.35 2 $168.40 $0.00 $254.48 2.75 $92.54Site Map– 11”x17” $0.00 0.25 $35.73 0.5 $50.35 2 $168.40 $0.00 $254.48 2.75 $92.54Alternative 1 concept maps - 11"x17" $0.00 0.5 $71.46 6 $604.20 $0.00 $0.00 $675.66 6.5 $103.95Alternative 2 concept maps - 11"x17" $0.00 0.5 $71.46 4 $402.80 $0.00 $0.00 $474.26 4.5 $105.39Alternative 3 concept maps - 11"x17" $0.00 0.25 $35.73 4 $402.80 $0.00 $0.00 $438.53 4.25 $103.18Alternative 4 concept maps - 11"x17" $0.00 0.5 $71.46 4 $402.80 $0.00 $0.00 $474.26 4.5 $105.39Alternative 5 concept maps - 11"x17" $0.00 1 $142.92 4 $402.80 $0.00 $0.00 $545.72 5 $109.14Alternative 6 concept maps - 11"x17" $0.00 0.25 $35.73 2 $201.40 $0.00 $0.00 $237.13 2.25 $105.39Alternative 7 concept maps - 11"x17" $0.00 0.25 $35.73 4 $402.80 $0.00 $0.00 $438.53 4.25 $103.18Existing Vs Alternative Conditions Node Peak Stage Tables $0.00 4 $571.68 10 $1,007.00 $0.00 $0.00 $1,578.68 14 $112.769.13 QA/QC Review - Draft Technical Memorandum 8 $1,548.56 $0.00 $0.00 $0.00 $0.00 $1,548.56 8 $193.579.14 Print and Assemble Technical Memorandum into Binders $0.00 0.5 $71.46 4 $402.80 4 $336.80 4 $289.08 $1,100.14 12.5 $88.019.15 Compile Electronic Deliverables on Disc $0.00 0.5 $71.46 4 $402.80 4 $336.80 $0.00 $811.06 8.5 $95.42

SUBTOTAL 8 $1,548.56 26.25 $3,751.65 99 $9,969.30 12 $1,010.40 4 $289.08 $16,568.99 149.25 $111.02

9.12




12/03/15

Y15-900CAssociate Engineer Senior Professional Engineer Senior Staff EngineerProfessional Engineer10 Permit Determination Meeting with SJRWMD10.1 Coordinate Meeting $0.00 1 $142.92 $0.00 $0.00 $0.00 $142.92 1 $142.9210.2 Prepare Meeting Exhibits & Agenda $0.00 2 $285.84 2 $201.40 $0.00 $0.00 $487.24 4 $121.8110.3 Attend meeting 3 $580.71 3 $428.76 $0.00 $0.00 $0.00 $1,009.47 6 $168.2510.4 Prepare minutes 0.5 $96.79 4 $571.68 $0.00 $0.00 0.5 $36.14 $704.61 5 $140.92

SUBTOTAL 3.5 $677.50 10.0 $1,429.20 2 $201.40 0 $0.00 0.5 $36.14 $2,344.24 16 $146.5211 Coordination Meeting with VWCD11.1 Coordinate Meeting $0.00 1 $142.92 $0.00 $0.00 $0.00 $142.92 1 $142.9211.2 Prepare Meeting Exhibits & Agenda $0.00 2 $285.84 2 $201.40 $0.00 $0.00 $487.24 4 $121.8111.3 Attend meeting 3 $580.71 3 $428.76 $0.00 $0.00 $0.00 $1,009.47 6 $168.2511.4 Prepare minutes 0.5 $96.79 4 $571.68 $0.00 $0.00 0.5 $36.14 $704.61 5 $140.92

SUBTOTAL 3.5 $677.50 10 $1,429.20 2 $201.40 0 $0.00 0.5 $36.14 $2,344.24 16 $146.5212 Draft Final Alternatives Analysis Technical Memorandum Preparation12.1 County Comments Response Letter $0.00 4 $571.68 1 $100.70 $0.00 $0.00 $672.38 5 $134.4812.2 Incorporate County Comments, SJRWMD, and VWCD input $0.00 16 $2,286.72 24 $2,416.80 $0.00 $0.00 $4,703.52 40 $117.5912.3 QA/QC Review – Draft Final Memorandum 4 $774.28 $0.00 $0.00 $0.00 $0.00 $774.28 4 $193.5712.4 Print and Assemble Draft Final Memorandum into Binders $0.00 0.5 $71.46 4 $402.80 4 $336.80 4 $289.08 $1,100.14 12.5 $88.0112.5 Compile Electronic Deliverables on Disc $0.00 0.5 $71.46 4 $402.80 4 $336.80 $0.00 $811.06 8.5 $95.42

SUBTOTAL 4 $774.28 21 $3,001.32 33 $3,323.10 8 $673.60 4 $289.08 $8,061.38 70 $115.1613 Attend and Present Study Findings at Lake Advisory Board Meeting 13.1 Prepare Draft Lake Advisory Board Presentation $0.00 4 $571.68 2 $201.40 $0.00 $0.00 $773.08 6 $128.8513.2 Pre-Board Meeting with County Staff 2 $387.14 2 $285.84 $0.00 $0.00 $0.00 $672.98 4 $168.2513.3 Prepare Final Lake Advisory Board Presentation $0.00 2 $285.84 2 $201.40 $0.00 $0.00 $487.24 4 $121.8113.4 Attendance at Lake Advisory Board Meeting 3 $580.71 3 $428.76 $0.00 $0.00 $0.00 $1,009.47 6 $168.2513.5 Prepare Lake Advisory Board Meeting Summary. $0.00 4 $571.68 $0.00 $0.00 $0.00 $571.68 4 $142.92

SUBTOTAL 5 $967.85 15 $2,143.80 4 $402.80 0 $0.00 0 $0.00 $3,514.45 24 $146.4413 Final Alternatives Analysis Technical Memorandum Preparation13.1 County Comments Response Letter $0.00 2 $285.84 1 $100.70 $0.00 $0.00 $386.54 3 $128.8513.2 Incorporate County Comments $0.00 8 $1,143.36 16 $1,611.20 $0.00 $0.00 $2,754.56 24 $114.7713.3 QA/QC Review - Final Memorandum 2 $387.14 $0.00 $0.00 $0.00 $0.00 $387.14 2 $193.5713.4 Print and Assemble Final Memorandum into Binders $0.00 0.5 $71.46 4 $402.80 4 $336.80 4 $289.08 $1,100.14 12.5 $88.0113.5 Compile Electronic Deliverables on Disc $0.00 0.5 $71.46 4 $402.80 4 $336.80 $0.00 $811.06 8.5 $95.42

SUBTOTAL 2 $387.14 11 $1,572.12 25 $2,517.50 8 $673.60 4 $289.08 $5,439.44 50 $108.7915 Project Management15.1 Project setup & administration 2 $387.14 $0.00 $0.00 $0.00 2 $144.54 $531.68 4 $132.9215.2 Management of technical staff efforts and general project QA/QC 10 $1,935.70 $0.00 $0.00 $0.00 $0.00 $1,935.70 10 $193.5715.3 Project tracking, schedule updates, project meetings, weekly status reports, etc. (approximate 10 month duration) 10 $1,935.70 20 $2,858.40 $0.00 $0.00 5 $361.35 $5,155.45 35 $147.30

SUBTOTAL 22 $4,258.54 20 $2,858.40 0 $0.00 0 $0.00 7 $505.89 $7,622.83 49 $155.57




12/03/15

Y15-900CAssociate Engineer Senior Professional Engineer Senior Staff EngineerProfessional Engineer

GRAND TOTALS 59.5 $11,517.52 195.25 $27,905.13 338 $34,036.60 28 $2,357.60 20 $1,445.41 $77,262.26 640.75Percent Breakdown 9% 15% 30% 36% 53% 44% 4% 3% 3% 2% 100% 100%SUBCONSULTANTS TOTAL LUMP SUM FEE COMPUTATIONS

Name M/WBE Status Amount Percentage(1) -$ 0.0% (1) Salary Cost (from above) = $77,262.26(2) -$ 0.0% (2) Out-of-Pocket Expenses (refer to Exhibit A2) + $817.00(3) -$ 0.0% (3) Subtotal (Consultant's Fees) [(1)+(2)] = $78,079.26Total Subconsultant Fees: -$ 0.0% (4) Subconsultant's Fees (from left) + $0.00

Proposed Total Lump Sum Fee [(3)+(4)] = $78,079.26


EXHIBIT A2 - REIMBURSABLE OUT-OF-POCKET-EXPENSES

Big Sand Lake Alternatives Analysis Date: 12/03/15Orange County, Florida Contract: Y15-900C

Unit Rate per Unit Quantity Subtotal

copy $0.05 200 $10.00copy $0.10 120 $12.00copy $1.00 360 $360.00copy $2.00 60 $120.00

sheet $3.00 0 $0.00sheet $12.00 0 $0.00

sheet $5.00 0 $0.00sheet $10.00 0 $0.00sheet $10.00 0 $0.00sheet $20.00 0 $0.00sheet $7.00 0 $0.00sheet $15.00 0 $0.00sheet $15.00 0 $0.00sheet $30.00 0 $0.00Unit Rate per Unit Quantity Subtotal

Water Level Meter day $20.00 0 $0.00Water Quality Meter (YSI style multi parameter) day $100.00 0 $0.00Turbidity Meter day $25.00 0 $0.00Field Sampling Supplies (ice, filters, jars, foil, etc.) day $25.00 0 $0.00Stormwater Autosampler (ISCO style) month $400.00 0 $0.00Stormwater Autosampler (ISCO style) w/ telemetry month $600.00 0 $0.00GPS Unit day $20.00 0 $0.00Digital Camera day $20.00 0 $0.00Peristaltic Pump day $25.00 0 $0.00Centrifugal Pump day $50.00 0 $0.00Generator day $60.00 0 $0.00

Unit Rate per Unit Quantity Subtotal

delivery $20.00 3 $60.00delivery $15.00 0 $0.00delivery $25.00 0 $0.00

CD/DVD Data each $10.00 3 $30.00Report Production Report Production - 1/2" to 1.5" binder, dividers, sleeve inserts each $20.00 0 $0.00 Report Production - 2" to 3" binder, dividers, sleeve inserts each $25.00 9 $225.00 Report Production - >3" binder, dividers, sleeve inserts each $30.00 0 $0.00

sf $15.00 0 $0.00

Day $0.00 0 $0.00Each $0.00 0 $0.00

GRAND TOTAL: $817.00

Miscellaneous Expenses

Field Expenses 36”x48” Color Plot

Scans Large Format B/W (17"x24", 24"x36", 36"x48") Large Format Color (17"x24", 24"x36", 36"x48") Full Size Plans and Plots (plans, public meetings, etc.) 24”x36” B/W Copies 24”x36” B/W Plot 24”x36” Color Copies 24”x36” Color Plot 36”x48” B/W Copies 36”x48” B/W Plot 36”x48” Color Copies

Color Copies – 11” x 17”

Reproduction CostsPhotocopies B/W Copies – 8½”x11” B/W Copies – 11”x17" Color Copies – 8½” x 11”

Courier / Express Delivery Service Public Works Downtown Orlando All other Central Florida areas (lab samples, etc.)Digital Archiving (include burning and labeling)

Mounting & Laminating (Presentation Materials) Gator Board (3/16”) Mounting with Gloss/Matte FinishProject Specific Costs/Fees



ATTACHMENT B

PROJECT SCHEDULE

ID Task Name Duration Start

1 Notice to Proceed 1 day Mon 2/1/16

2 Alternatives Analysis 59 days Tue 2/2/16

3 1 - Alternative 1 - Reconstruct and Lower Gravity Outfall 10 days Tue 2/2/164 2 - Alternative 2 - Pump Water through Existing Outfall 8 days Tue 2/16/165 3 - Alternative 3 - Construct Additional Drainage Wells 8 days Fri 2/26/166 4 - Alternative 4 - Pump Water to Existing Drainage Wells 8 days Wed 3/9/167 5 - Alternative 5 - Pump Water from Lake to Ribs 8 days Mon 3/21/168 6 - Alternative 6 - Require New Developments Follow Land Locked Basin Criteria 5 days Thu 3/31/169 7 - Alternative 7 - Pump Water from Lake to Nearby Dry Retention Ponds 8 days Thu 4/7/16

10 8 - Evaluate Need for Hydrologic Data 4 days Tue 4/19/1611 Draft Alternatives Analysis Technical Memorandum 41 days Mon 4/25/16

12 9 - Draft Alternatives Analysis Technical MemorandumPreparation 30 days Mon 4/25/1613 Submit Watershed Evaluation Technical Memorandum 1 day Mon 6/6/16

14 County Review of Watershed Evaluation Technical Memorandum 10 days Tue 6/7/1615 Agency Coordination 30 days Tue 6/21/16

16 10 - Permit Determination Meeting with SJRWMD 15 days Tue 6/21/1617 11 - Coordination Meeting with VWCD 15 days Tue 7/12/1618 Draft Final Alternatives Analysis Technical Memorandum 26 days Tue 8/2/16

19 12 - Draft Final Alternatives Analysis Technical Memorandum 15 days Tue 8/2/1620 Submit Draft Final Alternatives Analysis Technical Memorandum 1 day Tue 8/23/16

21 County Review of Draft Final Alternatives Analysis Technical Memorandum 10 days Wed 8/24/1622 13- Attend and Present Study Findings at Lake Advisory Board Meeting 30 days Wed 9/7/1623 Final Alternatives Analysis Technical Memorandum 16 days Wed 10/19/16

24 14 - Final Alternatives Analysis Technical Memorandum Preparation 15 days Wed 10/19/1625 Submit Final Alternatives Analysis Technical Memorandum 1 day Wed 11/9/16

26 Project Closeout 1 day Thu 11/10/16

2/1

4/22

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17 24 31 7 14 21 28 6 13 20 27 3 10 17 24 1 8 15 22 29 5 12 19 26 3 10 17 24 31 7 14 21 28 4 11 18 25 2 9 16 23 30 6 13 20 27Feb '16 Mar '16 Apr '16 May '16 Jun '16 Jul '16 Aug '16 Sep '16 Oct '16 Nov '16 De

Task Milestone Summary

ATTACHMENT B - PROPOSED PROJECT SCHEDULEBIG SAND LAKE ALTERNATIVES ANALYSISORANGE COUNTY, FLORIDA

December 3, 2015Contract #Y15-900C

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big sand lake alt analysis proposal - university of south

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