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R2004-016 02-09-04 RESOLUTION NO. R2004-16 A RESOLUTION OF THE CITY COUNCIL OF THE CITY OF PEARLAND, TEXAS, APPROVING WORK AUTHORIZATION #13 SUPPLEMENT #2 FOR DRAINAGE ANALYSIS SERVICES ASSOCIATED WITH THE PEARLAND MOBILITY AND DRAINAGE BOND PROGRAM (MAGNOLIA ROAD-PRELIMINARY INVESTIGATION). BE IT RESOLVED BY THE CITY COUNCIL OF THE CITY OF PEARLAND, TEXAS: Section 1. That certain contract by and between the City of Pearland and Turner, Collie and Braden, Inc., ("T C & B) for Program Management of the Pearland Mobility and Drainage Bond Program was authorized by the City Council on December 10, 2001. Section 2. That T C & B has developed work authorization #13 Supplement #2, which is attached hereto as Exhibit "A". Section 3. That work authorization #13 Supplement #2 for drainage analysis services associated with the Magnolia Road-Preliminary Investigation is hereby approved. PASSED, APPROVED and ADOPTED this the 9th dayof FebY'uar'y , A.D., 2004. ATTEST: APPROVED AS TO FORM: DARRIN M. COKER CiTY ATTORNEY TOM REID MAYOR Exhibit "A" Resolution No. R2004-16 ATTACHMENT D WORK AUTHORIZATION NO. 13 SUPPLEMENT NO. 2 This Work Authorization is made pursuant to the terms and conditions of the Pearland Mobility & Drainage Bond Pro,am, hereinafter identified as the "Contract", entered into by and between the City of Pearland ("City"), and Turner Collie & Braden Inc. ("Engineer). PART 1. Work Authorization No. 13, is related to Magnolia / Southfork / John Lizer Study. The Engineer will perform Drainage Analysis Studies. PART 2. The maximum amount payable for services under this Work Authorization No.13 Supplement No. 2 is $79,500.00. This amount is based on the attached fee proposals submitted by Klotz Associates, Inc., Inc. for Drainage Analysis Studies, dated January 21, 2004 for $79,500.00. PART 3. Payment to the Engineer for the services established under this Work Authorization shall be "Lump Sum Basis". PART 4. This Work Authorization shall become effective on February 10, 2004 and shall terminate on November 12, 2005, unless extended by a supplemental work authorization. PART 5. This Work Authorization does not waive the parties' responsibilities and obligations provided under the contract. PART 6. This Work Authorization is hereby accepted and acknowledged below. By: ENGINEER By: CITY OF PEARLAND Typed or Printed Name Bil 1 Ei sen Typed or Printed Name Title Date City Manager Title Date LIST OF EXHIBITS Exhibit A - Fee Schedule Exhibit B - Work Schedule Turner Collie Braden Inc. 1/23/2004 EXHIBIT A FEE SCHEDULE Pearland Mobility & Drainage Bond Program Work Authorization No. 13 Supplement No, 2 Summary Proiect Magnolia / Southfork / John Lizer Enflineerinfl Services,. Hydrologic & Hydraulic Environmental Compliance Topographic Survey Geotech ROW Maps & Documents PS&E Basic Services Traffic Control SWPPP Direct Cost ROW Acquisition Assistance Materials Testing Subtotal Total to Date Klotz Associates, Inc. Berg Oliver C.L. Davis Tolunay-Wong Previous Authorization $0.00 $22,300.00 $114,645.00 $29,490.00 $o.oo $o.oo $o.oo $o.oo $o.oo $o.oo $o.oo $o.oo $166,435.00 Current Authorization $ 79,500.00 $0.00 $79,500.00 $245,935.0O Page 1 of 1 KLOTZ ASSOCIATES, INC. CONSULTING ENGINEERS 1160 Dairy Ashford Suite 500 Houston, Texas 77079 (281) 589-7257 (281) 589-7309 Fax email@klotz.com January 21, 2004 Mr. James W. Keller, P.E. Senior Project Manager Turner Collie & Braden Inc. 5757 Woodway Houston, Texas 77057-1599 Re; Magnolia Road - Drainage Analysis Klotz Associates Project No. 0132.011 Dear Mr. Keller: Klotz Associates, Inc. is pleased to present this professional engineering services proposal to Turner Collie & Braden Inc. to prepare a drainage analysis for the proposed Magnolia Road project in the City of Pearland. PROJECT UNDERSTANDING The City of Pearland plans to complete an east-west transportation corridor to improve mobility for the south side of Pearland. The alignment will be on Southfork Drive from SH 288 to Foxden Drive, then Magnolia Road from Foxden Drive to Pearland Parkway. It is anticipated that developers will (or have) constructed most of the western segment of the alignment from County Road 94 to Morgan Street. The City will construct or widen a 5.4- mile section of the alignment from Morgan Street to Pearland Parkway. A separate 280ofoot segment from the SH 288 right-of-way to County Road 94 will also be included in the City project. The project alignment east of CR 94 is in the Marys Creek watershed, although a segment from the railroad crossing to Veterans Drive may be on the watershed divide between Marys Creek and Cowart Creek. The 280-foot segment of road west of CR 94 is on the watershed divide between Mustang Bayou and Clear Creek. The projeCt will be in the jurisdictional limits, or require coordination with the following govemmental bodies and agencies: City of Pearland, Brazoria Drainage District No. 4, Brazoria County, the City of Manvel, and the Texas Department of Transportation. The proposed drainage improvements are intended to serve only the proposed road project. In general, no improvements or capacity will be provided for future adjacent development. However, provisions may have to be made for future development, based on drainage patterns, existing systems, and on current development planning outside of the City of Pearland's city limits and extra-territorial jurisdiction. KLOTZ ASSOCIATES, INC. Mr. James W. Keller, P.E. January 21, 2004 ~ Page 2 The City of Pearland has acquired, and plans to acquire additional detention basin sites along Marys Creek which can be used as detention facilities for this project. The segment through the Silver Lakes development from Morgan Street to Foxden Drive may have detention capacity within the subdivision's detention facilities. This will be verified as part of this analysis. Based on the road alignment and detention basin locations, some segments of Magnolia Road will discharge directly to Marys Creek without detention, causing an impact to Marys Creek. An impact and mitigation analysis will be necessary for these segments of the Marys Creek channel. SCOPE OF WORK Attached is a detailed scope of work for the drainage analysis and a corresponding manhour estimate for each task. FEES We propose to provide the engineering services for a lump sum fee of $79,500. SCHEDULE We plan to complete the analysis in 120 days, exclusive of review times, as shown on the attached schedule. We appreciate the opportunity to work with you and the City of Pearland on this project. If you have any questions regarding the scope or fee, please call me at (281) 589-7257. Sincerely, Richard G. Llewellyn, P.E. Hydrology and Hydraulics Division Manager RGL:ng Attachments KLOTZ ASSOCIATES, INC. CONSULT ~JG ENGINEE ;S Scope of Work Magnolia Road - (SH 288 to Pearland Parkway) Drainage Analysis. Ci~' of Pearland/TC&B General Scope Statement Provide a drainage analysis to determine the drainage infrastructure necessary for the construction of the proposed Magnolia Road project. We will determine the requirements for cross drainage structures and right-of-way drainage, prepare an impact analysis, and determine mitigation (detention) volumes. We will also determine the 100-year water surface elevations to set minimum paving elevations. Where necessary, we will also recommend right-of-way or easement requirements to accommodate the drainage facilities. This analysis will provide a conceptual level design. The drainage analysis will be based on limited topographic surveys. Therefore, additional design analysis will be required during the design phase, when the detailed topographic survey is available. We understand that topographic surveys will not be obtained for outfall routes. Therefore, only limited conceptual design is possible. The proposed roadway will be a four-lane boulevard section (two lanes each direction) with curb-and-gutters and storm sewer drainage. There is no planned future widening of this pavement section. The right-of-way is anticipated to be 100 feet wide. The paving profile will be set to have one lane in each direction above the 100-year water surface. The alignment from SH 288 to Pearland Parkway includes the following segments, with existing pavement sections and approximate lengths noted: · Southfork Drive from SH 288 to CR 94 (280 feet) - Existing half boulevard section. Outfall drainage and detention assumed to be accommodated as part of the adjacent development. · * Southfork Drive from CR 94 to Morgan Street (9,000 feet) - Existing and proposed boulevard section by developers. · Southfork Drive from Morgan Street to Old Chocolate Bayou Road (3,000 feet) - Existing half boulevard section. Outfall drainage and detention are assumed to be accommodated as part of the Silver Lake development. · Southfork Drive from Old Chocolate Bayou to Foxden Drive (2,500 feet) - No existing pavement; new roadway in area apparently reserved for the road. · Magnolia Road from Foxden Drive to Hatfield Road (10,950 feet) - No existing pavement. · Magnolia Road from Hatfield Drive to Pearland Parkway (11,900 feet) - Existing two- lane asphalt road. 1 of 6 KLOTZ ASSOCIATES, INC. CONSULT NC' ENGINEERS * The second segment of Southfork Drive (from CR 94 to Morgan Street) will be completed by others and is not included in this scope of work. Where "floodplain" is referenced in this scope, it includes mapped (regulatOry) floodplains and computed 100-year water surfaces beyond the mapped floodplains. We understand that the following information will not be available for the drainage analysis: · Surveys - topographic surveys of the project alignment, supplemental surveys for outfall routes, datum adjustments, and utility surveys. · Pipeline investigations/probes · A Digital Terrain Model (DTM) of the alignment. · Profile plots of natural ground at ROW lines, existing roads, existing utilities, existing' pipelines, and proposed road profile TC&B will provide the following information in electronic format, where applicable: · Proposed road (plan view) · Locations of proposed detention facilities The following items are not included in the scope of work: · Preparation and submittal of requests for either a Conditional Letter of Map Revision (CLOMR) or a Letter of Map Revision (LOMR). · This drainage analysis will not consider diversions from one watershed to another. · Modeling of regional detention basins or basins remote from the project site is not included in the project scope. · Detailed design of roadway drainage and inlets. · Determination of compensatory storage volumes to mitigate fill in the floodplain. · Creating a DTM for the road alignment. · Plot profiles of natural ground at ROW lines, existing roads, existing utilities, existing pipelines, and proposed road profile. Task 01 - Existing Conditions Analysis . Determine existing drainage conditions along the project alignment; identify drainage outfall locations, constraints in the drainage systems, and requirements for final drainage analysis. Meetings, Coordination, and Project Management Attend up to six meetings with the client, owner, regulatory agencies, and other engineers to obtain information, discuss design basis, options, and alternates. Attend progress meetings with the client. Coordinate with other consultants to collect information (plans, reports, etc.) on their projects in the area. Establish design criteria for the project. 2 of 6 KLOTZ ASSOCIATES, INC. CONSULTING ENGINEERS Identify additional topographic survey requirements for the drainage analysis. Task includes project management tasks, such as scheduling, budgeting, invoicing, and communications with the client. o o Data collection Obtain maps, plans, and reports from cities, utility districts, developers' engineers, the Brazoria Drainage District No. 4 (BDD#4), Texas Department of Transportation (TxDOT), regulatory agencies, and other engineers. Obtain hydrologic and hydraulic models from FEMA, or from local agencies or engineers, if not available from FEMA. Perform site visits and reconnaissance to determine existing field conditions. Watershed Mapping Develop a base map and delineate major watershed boundaries and sub-basin boundaries for hydrologic analysis of drainage channels. Initial mapping will be based on watershed and sub-basin boundaries defined in other drainage studies. These will be revised, as appropriate, based on topographic analysis and field investigations. The watershed boundaries will be based on the City of Pearland's DEM. Hydrologic Models (HEC-1) a. Reestablish duplicate effective models or use the best available updated model for the Marys Creek watershed. We assume that the model is available electronically, and we will not have to manually key in the data. b. Create a revised base conditions model to reflect current watershed conditions. Reanalyze and/or develop new watershed parameters for use in the hydrologic model. Only those sub-basins that the road alignment crosses will be analyzed for revised base conditions. Hydraulic Models (HEC-2 or HEC-RAS) a. Reestablish duplicate effective models or use the best available updated model for Marys Creek. We assume that the model is available electronically, and we will not have to manually key in the data. b. Create revised base conditions models to reflect current conditions of existing discharge channels. Extend the models to incorporate unmodeled stream reaches, based on available topographic data - additional topographic surveys may be required to effectively and accurately extend the models. c. Tabulate the existing 100-year water surface elevations in relation to the roadway alignment. Offsite Drainage Analysis Define drainage areas for offsite drainage, cross drainage, and sheet flow analysis. Identify existing cross drainage structures and watercourses crossing the proposed road alignment. Analyze watershed parameters and develop flow rates. Identify required locations for cross drainage structures and develop design basis for the structures. 3 of 6 KLOTZ ASSOCIATES, INC. C ~NSU[TING Analyze Potential Outfall Routes Identify existing drainage outfall routes along the project alignment. Analyze depths, capacities, locations, and special restrictions for outfall channels. Right-of-way Drainage Develop drainage areas for the roadway design. Define offsite drainage areas and the development strip drainage areas. Project Layout Sheets Set up approximately six 11 x 17 exhibits (1" -- 200'H, 1" = 10'V). Show the plan view of the roadway alignment and existing drainage features, such as cross drainage structures. 10. Presentation of Findings Prepare for and attend up to two meetings to present the findings to the client, to the City, and to other interested parties. Task 02 - Conceptual Design Analysis Develop the conceptual design of the cross drainage structures, outfall requirements, and right-of-way drainage (storm sewer systems). Determine detention requirements to mitigate the increased peak runoff rates. Identify and evaluate alternate outfall alignments and routes. More detailed analysis will be provided only for selected alternates for the storm sewer system, cross drainage structures, and outfalls. Details for other alternates will not be developed beyond a schematic level. Develop construction cost estimates. Meetings, Coordination, and Project Management Attend up to six meetings with the client, owner, and regulatory agencies, to discuss design basis, options, and alternates. Attend progress meetings with the client. Coordination with other consultants and interested parties will be through TC&B. Task includes project management tasks, such as scheduling, budgeting, invoicing, and communications with the client. Develop Proposed Marys Creek Models Update the revised base conditions models based on review comments. Develop proposed hydrologic conditions in the watersheds and sub-basins. Create proposed hydrologic and hydraulic models for the main drainage systems. o Cross Drainage Structures Evaluate existing cross drainage structures. Size proposed cross drainage structures to convey storm water across the road alignment. Alternate evaluations will consider intercepting offsite drainage into the storm sewer system. 4 of 6 KLOTZ ASSOCIATES, INC. o Outfall Analysis (Channels/Storm Sewers) Develop outfatl locations,, routes, alignments, and sizing to serve the road's storm sewer systems. Establish outfall channel or storm sewer hydraulic grade lines by normal depth calculations if sufficient topographic information is available. Investigate alternate routes and alignments. Initial routes investigated will be in or adjacent to existing street rights- of-way. Up to four alternate routes will be evaluated. Roadway Drainage (Storm Sewer) Provide a preliminary trunk storm sewer analysis for the road system in accordance with the City of Pearland's design criteria. This analysis will provide proposed stoma sewer sizes, grades, and elevations for use in preparing construction plans. Inlets, leads, and laterals will not be included in this conceptual analysis. Impact and Initial Mitigation Analysis a. Determine the impact to peak discharge rates due to the road construction. b. Using the Small Watershed Method, estimate detention requirements to mitigate the impact to existing conditions. Determine detention requirements for the frequencies required by the City of Pearland. No routing will be performed in determining the initial detention volumes; therefore, volumes will be increased by 25% to provide conservative initial estimates. o Verify Detention Volumes Detention for the Magnolia Road project will be placed in regional detention basins. Therefore, runoff will be routed through outfall channels and possibly through segments of Marys Creek to the basins without mitigation of the peak flow rates, until reaching the basins. Detention basin locations are to be provided by TC&B. a. Set up proposed HEC-1 models to evaluate the detention facilities. b. Using HEC-1, verify that the initial estimated detention volumes are adequate. c. Determine the impact on segments of Marys Creek between outfalls and detention basins. d. Determine improvements necessary to mitigate the impact to Marys Creek between outfalls and detention basins. Drainage Infrastructure Layouts Plot the proposed trunk storm sewer, outfall, and cross drainage structures in plan view only. Right-of-Way Requirements Where necessary, determine fight-of-way requirements beyond the typical 100-foot road right-of-way for drainage infrastructure. Determine the effect of elevating the road profiles above the 100-year floodplain on right-of-way widths. Identify offsite right-of- xvay or easement needs for outfall storm sewers or channels, and for detention basin sites. 5 of 6 KLQTZ ASSOCIATES, COhlSUL~ING 10. Construction Cost Estimates Prepare estimates of probable construction costs for the major drainage infrastructure items and for alternates. Costs for inlets, leads, laterals, and other miscellaneous.drainage items will be based. on generic layouts (i~e. inlet spacing at 600 feet). 11. Draft Report Prepare a draft report documenting the existing conditions and the conceptual design analysis for review by the client, owner, and other regulatory agencies. Provide 8 copies of the draft report. 12. Final Report Based on review comments and coordination with interested parties, finalize the conceptual design of the drainage infrastructure. Provide 8 copies of the final report. 13. Presentation of Findings Prepare for and attend up to three meetings to present the findings to the client, to the City, and to other interested parties. 6 of 6 o 0 0 0 0 0 0 TurnerCollie _ Braden Inc. Engineers · Planners · Project Managers P.O. Box 130089 Houston, Texas 77219-0089 5757 Woodway 77057-1599 Tel: (713) 780-4100 Fax: (713) 780-0838 January 23, 2004 TC&B Job No. 052.511256.013 Re:¸ Pearland Mobility and Drainage Program Magnolia / Southfork / John Lizer Mr. Joe Wertz, Jr. Projects Director City of Pearland 3519 Liberty Drive Pearland, Texas 77581 Dear Mr. Wertz: In accordance with the Program Management Contract approved by the Pearland City Council on December 10, 2001, Turner Collie & Braden is requesting the following Contract Supplement for the ongoing Program Work as described below: Work Authorization No. 13-2 Magnolia / Southfork / John Lizer Fite Road Improvements Drainage Analysis Studies Klotz Associates, Inc. $79,500.00 The total amount of the Contract Supplement is $79,500.00. Copies of the Work Authorization and the Proposals for the work are attached. Please return one executed copy of each of the attached Work Authorizations. ~_~ncerely, Keller, P.E. Senior Proj ect Manager Attachments Engineering Established in 1946 Excellence for Over One-Half Century AN AECOM Co~P~qY KLOTZ Attachment A 1160 Dairy Ashford ASSOCIATES, Suite500 INC. Houston,Texas 77079 (281)589-7257 CONSULTING ENGINEERS (281)589-7309 Fax email@klotz.com February 9, 2004 Mr. James W. Keller,P.E. Senior Project Manager Turner Collie &Braden Inc. 5757 Woodway Houston, Texas 77057-1599 Re: Magnolia Road—Drainage Analysis Klotz Associates Project No. 0132.011 Dear Mr. Keller: Klotz Associates, Inc. is pleased to present this professional engineering services proposal to Turner Collie& Braden Inc. to prepare a drainage analysis for the proposed Magnolia Road project in the City of Pearland. PROJECT UNDERSTANDING The City of Pearland is investigating east-west transportation corridors to improve mobility for the south side of Pearland. The alignment being investigated under this project is Southfork Drive from SH 288 to Foxden Drive, then Magnolia Road from Foxden Drive to Pearland Parkway. Developers have constructed the segment of the alignment from County Road 94 to Morgan Street. The City will construct or widen a 5.4-mile section of the alignment from Morgan Street to Pearland Parkway. A separate 280-foot segment from the SH 288 right-of-way to County Road 94 will also be included in the City project. The project alignment east of CR 94 is in the Marys Creek watershed, although a segment from the railroad crossing to Veterans Drive may be on the watershed divide between Marys Creek and Cowart Creek. The 280-foot segment of road west of CR 94 is on the watershed divide between Mustang Bayou and Clear Creek. The project will be in the jurisdictional limits, or require coordination with the following governmental bodies and agencies: City of Pearland, Brazoria Drainage District No. 4, Brazoria County, the City of Manvel, and the Texas Department of Transportation. The proposed drainage improvements are intended to serve only the proposed road project. In general, no improvements or capacity will be provided for future adjacent development. However, provisions may have to be made for future development, based on drainage patterns, existing systems, and on current development planning outside of the City of Pearland's city limits and extra-territorial jurisdiction. A-1 KLOTZ ASSOCIATES, INC. CONSULTING ENGINEERS Mr. James W. Keller,P.E. February 9, 2004 Page 2 The City of Pearland has acquired, and plans to acquire additional detention basin sites along Marys Creek which can be used as detention facilities for this project. The segment through the Silver Lakes development from Morgan Street to Foxden Drive may have detention capacity within the subdivision's detention facilities. This will be verified as part of this analysis. Based on the road alignment and detention basin locations, some segments of Magnolia Road will discharge directly to Marys Creek without detention, causing an impact to Marys Creek. An impact and mitigation analysis will be necessary for these segments of the Marys Creek channel. SCOPE OF WORK Attached is a detailed scope of work for the drainage analysis and a corresponding manhour estimate for each task. FEES We propose to provide the engineering services for a lump sum fee of$79,500. SCHEDULE We plan to complete the analysis in 120 days, exclusive of review times, as shown on the attached schedule. We appreciate the opportunity to work with you and the City of Pearland on this project. If you have any questions regarding the scope or fee,please call me at(281) 589-7257. Sincerely, � r W/0460,v7. Richard G. Llewellyn,P.E. Hydrology and Hydraulics Division Manager RGL:ng Attachments A-2 KLOTZ ASSOCIATES, INC. CONSULTING ENGINEERS Scope of Work Magnolia Road—(SH 288 to Pearland Parkway) Drainage Analysis City of Pearland/TC&B General Scope Statement Provide a drainage analysis to determine the drainage infrastructure necessary for the construction of the proposed Magnolia Road project. We will determine the requirements for cross drainage structures and right-of-way drainage, prepare an impact analysis, and determine mitigation (detention)volumes. We will also determine the 100-year water surface elevations to set minimum paving elevations. Where necessary,we will also recommend right-of-way or easement requirements to accommodate the drainage facilities. This analysis will provide a conceptual level design. The drainage analysis will be based on limited topographic surveys. Therefore, additional design analysis will be required during the design phase,when the detailed topographic survey is available. We understand that topographic surveys will not be obtained for outfall routes. Therefore, only limited conceptual design is possible. The proposed roadway will be a four-lane boulevard section (two lanes each direction)with curb-and-gutters and storm sewer drainage. There is no planned future widening of this pavement section. The right-of-way is anticipated to be 100 feet wide. The paving profile will be set to have one lane in each direction above the 100-year water surface. The alignment from SH 288 to Pearland Parkway includes the following segments, with existing pavement sections and approximate lengths noted: • Southfork Drive from SH 288 to CR 94 (280 feet)—Existing two-lane asphalt pavement section. Outfall drainage and detention assumed to be accommodated as part of the adjacent development. • Southfork Drive from CR 94 to Morgan Street(9,000 feet)—Existing boulevard section completed by developers. • Southfork Drive from Morgan Street to Old Chocolate Bayou Road(3,000 feet)— Existing half boulevard section. Outfall drainage and detention are assumed to be accommodated as part of the Silver Lake development. • Southfork Drive from Old Chocolate Bayou to Foxden Drive(2,500 feet)—No existing pavement; new roadway in area apparently reserved for the road. • Magnolia Road from Foxden Drive to Hatfield Road(10,950 feet)—No existing pavement. • Magnolia Road from Hatfield Drive to Pearland Parkway(11,900 feet)—Existing two- lane asphalt road. 1 of 6 A-3 • KLOTZ ASSOCIATES, INC. CONSULTING ENGINEERS Where "floodplain" is referenced in this scope, it includes mapped (regulatory) floodplains and computed 100-year water surfaces beyond the mapped floodplains. We understand that the following information will not be available for the drainage analysis: • Pipeline investigations/probes • A Digital Terrain Model (DTM) of the alignment TC&B will provide the following information in electronic format, where applicable: • Proposed road (plan view) • Locations of proposed detention facilities The following items are not included in the scope of work: • Preparation and submittal of requests for either a Conditional Letter of Map Revision (CLOMR) or a Letter of Map Revision(LOMR). • This drainage analysis will not consider diversions from one watershed to another. • Modeling of regional detention basins or basins remote from the project site is not included in the project scope. • Detailed design of roadway drainage and inlets. • Determination of compensatory storage volumes to mitigate fill in the floodplain. (This item is to be calculated by the program manager). • Creating a DTM for the road alignment. • Plot profiles of natural ground at ROW lines, existing roads, existing utilities, existing pipelines, and proposed road profile. Task 01 - Existing Conditions Analysis Determine existing drainage conditions along the project alignment; identify drainage outfall locations, constraints in the drainage systems, and requirements for final drainage analysis. 1. Meetings, Coordination, and Project Management Attend up to six meetings with the client, owner, regulatory agencies, and other engineers _ to obtain information, discuss design basis, options, and alternates. Attend progress meetings with the client. Coordinate with other consultants to collect information(plans, reports, etc.) on their projects in the area. Establish design criteria for the project. Identify additional topographic survey requirements for the drainage analysis. Task includes project management tasks, such as scheduling, budgeting, invoicing, and communications with the client. 2 of 6 A-4 KLOTZ • ASSOCIATES, INC. CONSULTING ENGINEERS 2. Data collection Obtain maps, plans, and reports from cities, utility districts, developers' engineers, the Brazoria Drainage District No. 4 (BDD#4), Texas Department of Transportation (TxDOT),regulatory agencies, and other engineers. Obtain hydrologic and hydraulic models from FEMA, or from local agencies or engineers, if not available from FEMA. Perform site visits and reconnaissance to determine existing field conditions. 3. Watershed Mapping Develop a base map and defineate`major watershed boundaries and sub-basin boundaries for hydrologic analysis of drainage channels. Initial mapping will be based on watershed and sub-basin boundaries defined in other drainage studies. These will be revised, as appropriate,based on topographic analysis and field investigations. The watershed boundaries will be based on the City of Pearland's DEM. 4. Hydrologic Models (HEC-1) a. Reestablish duplicate effective models or use the best available updated model for the Marys Creek watershed. We assume that the model is available electronically, and we will not have to manually key in the data. b. Create a revised base conditions model to reflect current watershed conditions. Reanalyze and/or develop new watershed parameters for use in the hydrologic model. Only those sub-basins that the road alignment crosses will be analyzed for revised base conditions. 5. Hydraulic Models (HEC-2 or HEC-RAS) a. Reestablish duplicate effective models or use the best available updated model for Marys Creek. We assume that the model is available electronically, and we will not have to manually key in the data. b. Create revised base conditions models to reflect current conditions of existing discharge channels. Extend the models to incorporate unmodeled stream reaches, based on available topographic data—additional topographic surveys may be required to effectively and accurately extend the models. c. Tabulate the existing 100-year water surface elevations in relation to the roadway alignment. 6. Offsite Drainage Analysis Define drainage areas for offsite drainage, cross drainage, and sheet flow analysis. Identify existing cross drainage structures and watercourses crossing the proposed road alignment. Analyze watershed parameters and develop flow rates. Identify required locations for cross drainage structures and develop design basis for the structures. 7. Analyze Potential Outfall Routes Identify existing drainage outfall routes along the project alignment. Analyze depths, capacities, locations, and special restrictions for outfall channels. 3 of 6 A-5 KLOTZ ASSOCIATES, INC. CONSULTING ENGINEERS 8. Right-of-way Drainage Develop drainage areas for the roadway design. Define offsite drainage areas and the development strip drainage areas. 9. Project Layout Sheets Set up approximately six 11 x 17 exhibits (1"=200'H, 1"= 10'V). Show the plan view of the roadway alignment and existing drainage features, such as cross drainage structures. 10. Presentation of Findings Prepare for and attend up to two meetings to present the findings to the client, to the City, and to other interested parties. Task 02—Conceptual Design Analysis Develop the conceptual design of the cross drainage structures, outfall requirements, and right-of-way drainage (storm sewer systems). Determine detention requirements to mitigate the increased peak runoff rates. Identify and evaluate alternate outfall alignments and routes. More detailed analysis will be provided only for selected alternates for the storm sewer system, cross drainage structures, and outfalls. Details for other alternates will not be developed beyond a schematic level. Develop construction cost estimates. 1. Meetings, Coordination, and Project Management Attend up to six meetings with the client, owner, and regulatory agencies, to discuss design basis, options, and alternates. Attend progress meetings with the client. Coordination with other consultants and interested parties will be through TC&B. Task includes project management tasks, such as scheduling, budgeting, invoicing, and communications with the client. 2. Develop Proposed Marys Creek Models Update the revised base conditions models based on review comments. Develop proposed hydrologic conditions in the watersheds and sub-basins. Create proposed hydrologic and hydraulic models for the main drainage systems. Coordinate development of models with Dannenbaum Engineering in their modeling of the West Marys Creek detention basin and the SWEC detention basin. 3. Cross Drainage Structures Evaluate existing cross drainage structures. Size proposed cross drainage structures to convey storm water across the road alignment. Alternate evaluations will consider intercepting offsite drainage into the storm sewer system. 4 of 6 A-6 KLOTZ ASSOCIATES, INC. CONSULTING ENGINEERS 4. Outfall Analysis (Channels/Storm Sewers) Develop outfall locations, routes, alignments, and sizing to serve the road's storm sewer systems. Establish outfall channel or storm sewer hydraulic grade lines by normal depth calculations if sufficient topographic information is available. Investigate alternate routes and alignments. Initial routes investigated will be in or adjacent to existing street rights- of-way. Up to four alternate routes will be evaluated. 5. Roadway Drainage (Storm Sewer) Provide a preliminary trunk storm sewer analysis for the road system in accordance with the City of Pearland's design criteria. This analysis will provide proposed storm sewer sizes, grades, and elevations for use in preparing construction plans. Inlets, leads, and laterals will not be included in this conceptual analysis. 6. Impact and Initial Mitigation Analysis a. Determine the impact to peak discharge rates due to the road construction. b. Using the Small Watershed Method, estimate detention requirements to mitigate the impact to existing conditions. Determine detention requirements for the frequencies required by the City of Pearland. No routing will be performed in determining the initial detention volumes; therefore, volumes will be increased by 25%to provide conservative initial estimates._ 7. Verify Detention Volumes Detention for the Magnolia Road project will be placed in regional detention basins. Therefore, runoff will be routed through outfall channels and possibly through segments of Marys Creek to the basins without mitigation of the peak flow rates, until reaching the basins. Detention basin locations are to be provided by TC&B. a. Set up proposed HEC-1 models to evaluate the detention facilities. b. Using HEC-1, verify that the initial estimated detention volumes are adequate. c. Determine the impact on segments of Marys Creek between outfalls and detention basins. d. Determine improvements necessary to mitigate the impact to Marys Creek between outfalls and detention basins. 8. Drainage Infrastructure Layouts Plot the proposed trunk storm sewer, outfall, and cross drainage structures in plan view only. 9. Right-of-Way Requirements Where necessary, determine right-of-way requirements beyond the typical 100-foot road right-of-way for drainage infrastructure. Determine the effect of elevating the road profiles above the 100-year floodplain on right-of-way widths. Identify offsite right-of- way or easement needs for outfall storm sewers or channels, and for detention basin sites. 5 of 6 A-7 KLOTZ ASSOCIATES, INC. CONSULTING ENGINEERS 10. Construction Cost Estimates Prepare estimates of probable construction costs for the major drainage infrastructure items and for alternates. Costs for inlets, leads, laterals, and other miscellaneous drainage items will be based on generic layouts (i.e. inlet spacing at 600 feet). 11. Draft Report Prepare a draft report documenting the existing conditions and the conceptual design analysis for review by the client, owner, and other regulatory agencies. Provide 8 copies of the draft report. 12. Final Report Based on review comments and coordination with interested parties, finalize the conceptual design of the drainage infrastructure. Provide 8 copies of the final report. 13.Presentation of Findings Prepare for and attend up to three meetings to present the findings to the client, to the City, and to other interested parties. 6 of 6 A-8 Summary Engineering Services Budget City of Pearland/TC&B Magnolia Road (from SH 288 to Pearland Parkway) Klotz Assoc. Proj. No. 0132.011 December 2, 2003 Task Labor Subs Expenses Unadjusted Adjusted Totals Budgets Task 01 $ 27,699 $ - $ 1,932 $ 29,631 $ 29,600 Task 02 $ 47,272 $ - $ 2,611 $ 49,882 $ 49,900 Total $ 74,971 $ - $ 4,543 $ 79,514 $ 79,500 A : in Magnolia Fee Jan 04 1/21/2004 1 of 8 Task 01 - Existing Conditions Analysis City of Pearland/TC&B Magnolia Road(from SH 288 to Pearland Parkway) Klotz Assoc.Proj.No.0132.011 Act. Subtask Descriptions Prin. Project Project Engr. Designer Cler. Total Fee By Nos. Mgr. Engr. Hours Activity 01 Meetings,Coordination,&PM - TC&B&client kick-off meeting 2 2 4 - Coordination with other engineers '2 2 4 - TC&B progress&coord.mtgs.-2 @ 2 hrs ea. 4 4 8 Agency coordination meetings(See Item 02) 0 - Monthly invoices&status reports 1 2 1 4 Communications with client- 1 hr/wk, 6 wks 4 2 6 PM activities- 1 hr/week,6 weeks 6 6 Activity Subtotals 1 20 0 10 0 1 32 $ 3,851 02 Data Collection Site Investigations 4 8 12 Obtain maps,reports,plans-various sources 8 8 Obtain HEC-1 and HEC-2 models 4 4 Activity Subtotals 0 4 0 20 0 0 24 $ 2,129 03 Watershed Mapping c) Map Marys Creek watershed Setup base map 4 4 8 Analyze basin&sub-basin boundaries 2 4 6 Revise boundaries 1 2 2 5 QA/QC 1 0 Activity Subtotals 0 3 1 10 6 0 20 $ 1,770 04 Hydrologic Model-Marys Creek Run and evaluate existing model 1 2 3 Create revised base cond's model 0 Watershed parameters 4 8 4 16 Analyze and compare flow rates 1 8 9 QA/QC 2 2 0 Activity Subtotals 0 6 2 18 4 0 30 $ 2,763 05 Hydraulic Model-Marys Creek Run and evaluate existing model 1 4 5 Create revised base cond's model 0 Magnolia Fee Jan 04 1/21/2004 2 of 8 Task 01 - Existing Conditions Analysis City of Pearland/TC&B Magnolia Road(from SH 288 to Pearland Parkway) Klotz Assoc.Proj.No.0132.011 Act. Subtask Descriptions Prin. Project Project Engr. Designer Cler. Total Fee By Nos. Mgr. Engr. Hours Activity Determine updated info to use 2 4 6 Extend model 2 8 10 Analyze and compare WSEL's 1 2 3 QA/QC 2 2 0 Activity Subtotals 0 6 2 18 0 0 26 $ 2,452 06 Off-site Drainage Analysis Define drainage areas 1 2 4 4 11 Sheet flow analysis 2 4 2 8 Develop flow rates 2 8 10 Schematic of flow(intercept vs.pass-through) 2 4 4 10 QA/QC 2 2 0 Activity Subtotals 1 8 2 20 10 0 41 $ 3,821 n 07 Analyze Potential Outfall Routes I . Identify potential outfall channels 1 2 4 2 9 Analyze outfall capacities 2 8 10 Determine outfall channel restrictions 2 4 6 QA/QC 2 2 0 Activity Subtotals 1 6 2 16 2 0 27 $ 2,601 08 Right-of-Way Drainage Define Drainage Areas 0 Onsite drainage areas 2 8 4 14 Development strip 4 8 4 16 Offsite drainage areas 2 4 2 8 Existing flow rates 2 8 10 QA/QC 2 2 Activity Subtotals 0 0 10 2 28 10 0 50 $ 4,581 09 Project Layout Sheets Set up 11x17 exhibits(1"=200') 2 4 6 Plot existing drainage elements 1 4 8 13 Magnolia Fee Jan 04 1/21/2004 3 of 8 Task 01 - Existing Conditions Analysis City of Pearland/TC&B Magnolia Road(from SH 288 to Pearland Parkway) Klotz Assoc.Proj.No.0132.011 Act. Subtask Descriptions Prin. Project Project Engr. Designer Cler. Total Fee By Nos. - Mgr. Engr. Hours Activity QAIQC 1 1 - Activity Subtotals 0 1 1 6 12 0 20 $ 1,639 10 Presentation of Findings I Prepare exhibits _ 2 4 4 10 Presentations-2@ 2 hrs.ea. 2 4 4 10 0 Activity Subtotals 2 6 0 8 4 0! 20 $ 2,093 I Task Totals 5 70 12 154 48 1+ 290 $ 27,699 n I N Magnolia Fee Jan 04 1/21/2004 4 of 8 Task 02 - Preliminary H&H Design City of Pearland/TC&B Magnolia Road(from SH 288 to Pearland Parkway) Klotz Assoc.Proj.No.0132.011 Act. Subtask Descriptions Prin. Project Project Engr. Designer Cler. Total Fee by Nos. Mgr. Engr. Hours Activity 01 Meetings,Coordination,&PM TC&B progress&coord.mtgs. -2 @ 2 hrs ea. 4 4 8 Agency coord.meetings-4 n,2 hrs ea. 4 4 8 Monthly invoices and status reports 1 2 2 5 Communications with client- 1 hr/wk, 8 wks 4 2 6 PM activities- 1 hr/week,8 weeks 8 8 Activity Subtotals 1 22 0 10 0 2 35 $ 4,192 02 Develop Proposed Marys Creek Models Proposed hydrologic models 1 16 17 Proposed hydraulic models 1 16 17 QA/QC 2 2 Activity Subtotals 0 2 2 32 0 0 36 $ 2,966 03 Cross Drainage Structures - y Major-3 a,4 hrs.ea. 2 4 12 18 �, Minor- 15 @ 0.5 hrs.ea. 4 8 12 W Alternate structures-4 @ 2 hrs.ea. 2 8 10 QAIQC 4 - 4 0 . Activity Subtotals 2 10 4 28 0 0 44 $ 4,294 04 Outfall Design(Channels/Storm Sewers) Determine primary outfall routes 1 4 4 2 11 Identify alternate outfall routes 2 4 2 Outfall design 4 16 Outfall channel HGL's(normal depth) 2 8 QA/QC 4 Activity Subtotals 1 12 4 32 4 0 53 $ 5,053 05 Roadway Drainage(Storm Sewer Design) Storm sewer schematics 4 - 4 4 12 Storm sewer models 8 24 32 Models for alternate layouts 4 8 QA/QC 4 4 0 Magnolia Fee Jan 04 1/21/2004 5 of 8 V Task 02 - Preliminary H&H Design City of Pearland/TC&B Magnolia Road (from SH 288 to Pearland Parkway) Klotz Assoc.Proj.No.0132.011 Act. Subtask Descriptions Prin. Project Project Engr. Designer Cler. Total Fee by Nos. Mgr. Engr. Hours Activity Activity Subtotals 0 16 4 36 4 0 60 $ 5,789 06 Impact and Initial Mitigation Analysis - Impact Analysis 0 Develop proposed flow rates 2 8 10 Summarize impact 1 2 3 Mitigation(detention)analysis-initial 0 Small Watershed Method 4 8 12 QA/QC 2 2 0 Activity Subtotals 0 7 2 18 0 0 27 $ 2,595 07 Verify Detention Volumes Set up detention HEC-1 model 2 16 18 Run and evaluate models,verify volumes 4 8 12 n Impact on channels 2 4 6 �, Mitigate impact on channels 2 8 10 - - QA/QC 2 2 0 Activity Subtotals 0 10 2 36 0 0 48 $ 4,425 08 Project Layout Sheets ROW&development strip drainage areas 1 2 4 8 15 Storm sewer layouts 2 8 8 18 Outfalls ? i 1 4 4 9 Alternate layouts 1 1 4 8 13 QA/QC 2 2 Activity Subtotals 1 6 2 20 28 0 57 $ 4,934 09 Right-of-Way Requirements Roadway fill 2 6 8 Outfall routes 2 2 4 Detention sites 2 4 6 0 Activity Subtotals 0 6 0 12 0 0 18 $ 1,794 10 Construction Cost Estimates Magnolia Fee Jan 04 1/21/2004 6 of 8 Task 02 - Preliminary H&H Design City of Pearland/TC&B Magnolia Road(from SH 288 to Pearland Parkway) Klotz Assoc.Proj.No.0132.011 Act. Subtask Descriptions Prin. Project Project Engr. Designer Cler. Total Fee by Nos. Mgr. Engr. Hours Activity Quantity take-offs _ 1 8 8 17 Unit price analysis 2 2 4 Set up estimates 4 . 4 Analyze estimates 2 2 Alternates estimates 2 4 4 10 QA/QC 2 2 Activity Subtotals 0 - 0 7 _ 2 18 12 0 39 $ 3,528 11 Draft Report Text 2 32 8 4 46 Tables _ Exhibits 2 8 32 38 Appendices 4 1 1 6 Assemble report 2 1 1 4 - n QA/QC 2 8 10 � n Activity Subtotals 4 34 8 26 34 6 112 $ - � 11,230 12 Final Report Text 2 12 4 4 22 Tables 8 Exhibits 2 8 16 26 Appendices 4 1 1 6 Assemble report 1 1 1 3 QA/QC 2 4 6 Activity Subtotals 4 14 4 25 18 6 71 $ 6,656 13 Presentation of Findings Prepare exhibits 2 4 8 Presentations-3 @ 2 hrs.ea. 2 6 14 4 Activity Subtotals 2 8 0 0 8 8 0 26 $ 2,691 Task Totals 11 124 28 228 90 8 489 $ 47,272 Magnolia Fee Jan 04 1/21/2004 7 of 8 I Expenses City of Pearland/TC&B Magnolia Road(from SH 288 to Pearland Parkway) Klotz Assoc. Proj.No.0132.011 Expense Descriptions Task 01 Task 02 Total Budget Subconsultants Survey $0 Geotechnical $0 Structural $0 Architectural $0 Civil Traffic $0 $0 Electrical $0 CAD(Contract people or a firm) $0 Landscape $0 Other $6 Total Subconsultants $0 $0 $0 Direct Expenses Mileage $150 $200 $350 Parking $0 tT Tolls $20 $20 $40 Meals and Lodging $0 Plotting of Drawings/Exhibits $300 $900 $1,200 Prints of Drawings/Exhibits $0 Mylars $0 Copying and Binding(Reports) $1,000 $1,000 Color Copies $0 Photos $50 $10 $60 Deliveries $100 $100 $200 Postage $20 $20 $40 Faxes/Phone $20 $20 $40 Printing(Offset) $0 Supplies $0 Maps $0 Computer Software $0 FEMA Models $1,000 $1,000 Other $20 $20 Total Direct Expenses $1,680 $2,270 $3,950 Total Project Expenses $1,680 $2,270 $3,950 Magnolia Fee Jan 04 1/21/2004 8 of 8