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Home My WebLink AboutContract 37207 AMENDMENT NO. 1 STATE OF TEXAS S CITY SECRETARY CONTRACT NO. (No M&C Needed) COUNTY OF TARRANT S WHEREAS, the City of Fort Worth (City) and Dannenbaum Engineering Corporation, (Engineer) made and entered into City Secretary Contract No. 35551, (the Contract) which was authorized by the City Council by M&C C-22178 on the 12th day of June 2007; and WHEREAS, the Contract involves engineering services for the following project: Engineering Design Services: Seepage Analysis Study and Report on Linda Lane Drainage Improvements,Dottie Lynn Parkway Culvert Improvements and Oakridge Terrace Drainage Improvements , Project No.00474; DOE No.5414 WHEREAS, it has become necessary to execute Amendment No. 1 to said Contract to include an increased scope of work and revised maximum fee; NOW THEREFORE, City and Engineer, acting herein by and through their duly authorized representatives, enter into the following agreement which amends the Contract: 1 . Article I of the Contract is amended to include the additional engineering services specified in a proposal letter dated March 7, 2008, a copy of which is attached hereto and incorporated herein. The cost to City for the additional design services to be performed by Engineer total $19, 601 .00 . 2 . Article II of the Contract is amended to provide for an increase in the maximum fee to be paid to Engineer for all work and services performed under the Contract, as amended, so that the total fee paid by the City for all work and services shall not exceed the sum of $116,739.00. 05-11 -03 PO4: 31 I " 31 ORIGINAL 3 . All other provisions of the Contract which are not expressly amended herein shall remain in full force and effect. EXECUTED on this the day of , 2006, in Fort Worth, Tarrant County, Texas. ATTEST: 1411 fil�'4) zV-'&1 �Ct- Ma Hendrix --�---- Cit Secretary NO M&C REQUIRED APPROVAL RECOMMENDED: APPROVED: r A. Douglas Rademaker, P.E. Fernando Costa Director, Department of Assistant City Manager Engineering Dannenbaum Engineering Corporation ENGINEER / By Name: Wayne G. Ahrens, P.E. Principal 6401 Camp Bowie Blvd. , Suite 400 Fort Worth, Texas 76116-5421 APPROVED4ASORM ITY: ��Assistan torney 1 2- C I TY k 0 I DANNENBAUM ENGINEERING CORPORATION 6421 CAMP BOWIE BLVD.,SUITE 400 FORT WORTH,TEXAS 76116-5421 (817)763-8883 ,t Y+..acoce March 7, 2008 Mr. Gopal Sahu, P.E. City of Fort Worth 1000 Throckmorton Street Fort Worth, Texas 76102-6311 RE: COFW Storm Water Utility Project Oakridge Terrace,Linda Lane, & Dottie Lynn Parkway Drainage Improvements Supplemental Agreement No. 1 Mr. Sahu: During the development of our preliminary engineering design for the above referenced project, we have determined solutions to the drainage issues that are slightly different than those originally proposed. Those changes include: • Linda Lane — The issue being solved is the mid-block flooding of Linda.Lane. After investigation, the floodirirg' in Linda Lane is the result of storm water drainage from Glen Eden Drive turning onto Linda Lane. The most efficient means to mitigate the flooding occurring along Linda lane is to capture the storm water collecting in Glen Eden Drive before its entry into Linda Lane. This approach will save costs for both length and depth of storm drain constructed, but will require additional survey, easement preparation and design. • Dottie Lynn Parkway — The issue being solved is the mitigation of an area upstream of the 2300 Block of Dottie Lynn Parkway that does not drain. The original solution was to modify the existing box culvert by installing a low flow relief structure and constructing a downstream pilot channel to drain. After investigation, we have determined that the grade of the existing downstream channel is extremely flat and the length of the proposed grading/pilot channel will become excessive. Alternatively, downstream of the existing box culvert is an existing pond (a former borrow pit) at a lower elevation that will accommodate positive flow from a proposed storm drain relief pipe; the existing pond is platted into an existing drainage easement. Consideration of this approach will save costs by not modifying an existing box culvert structure and not constructing a long length of pilot channel, but will require additional survey, easement preparation and design. If you are in agreement with these changes, our authorized compensation will increase from $97,138.00 to $116,739.00. -B6&6J�th e issues were discussed with Steve Eubanks and Linda Young during a G:\1210\"4278-32\Admin\Agreement\SA#ITetter Sahu 2008-03-07.doc meeting on February 25, 2008. At the time, they were in general agreement with the changes on Linda Lane and clarified the direction on Dottie Lynn Pkwy leading to this proposal. If you have any questions or require any additional information, please do not hesitate to call. Sincerely, urtis Caldwell, P.E. xc: Ms. Dena Johnson, P.E. Mr. Steve Eubanks, P.E. Ms. Linda Young, P.E. Carlon Small r G:\1210\4278-32\Admin\Agreement\SA#1\Letter Sahu 2008-03-07.doc ATTACHMENT "B" COMPENSATION AND SCHEDULE CITY OF FORT WORTH STORM WATER UTILITY PROJECT OAKRIDGE TERRACE, LINDA LANE, & DOTTIE LYNN PKWY SUPPLEMENTAL AGREEMENT No. 1 CITY PROJECT NO. 00474 DOE NO. 5414 I. Compensation: A. The Engineer shall be compensated a total lump sum fee of$ 19,601.00 as summarized in Exhibit "13-313". Payment of the total lump sum fee shall be considered full compensation for the services described in Exhibit"A" for all labor materials, supplies and equipment necessary to complete the proj ect. B. The Engineer shall be paid monthly as described in Exhibit "B-1", Section 1 —Method of Payment. Each Invoice is to be verified as to its accuracy and compliance with the terms of this contract by an officer of the Engineer. II. Schedule: A. Phases 1 and 2 shall be completed 60 days after the "Notice to Proceed" letter is issued. The Scope of Services is outlined in Attachment"A", Exhibit"A". �n C EXHIBIT"B-V (SUPPLEMENTAL TO ATTACHMENT B) METHOD OF PAYMENT CITY OF FORT WORTH STORM WATER UTILITY PROJECT OAKRIDGE TERRACE, LINDA LANE, & DOTTIE LYNN PKWY SUPPLEMENTAL AGREEMENT No. 1 CITY PROJECT NO. 00474 DOE NO. 5414 I. Method of Payment Partial payment shall be made to the Engineer monthly upon City's approval of an invoice from the Engineer outlining the estimated current percent complete of the total project. The aggregate of such monthly partial fee payments shall not exceed the following: Until satisfactory completion of Exhibit"A",Conceptual Engineering plan submittal and approval by the City,a sum not to exceed 30 percent of the total lump sum fee. Until satisfactory completion of Exhibit"A",Preliminary Construction Plan submittal to City, a sum not to exceed 60 percent of the total lump sum fee, less previous payments. Until satisfactory completion of Exhibit"A",Final Construction plan submittal to the City, a sum not to exceed 90 percent of the total lump sum fee, less previous payments. The balance of the earnings, less previous payments, shall be payable after the successful completion of Exhibit"A",Pre-Construction Conference. II. Progress Reports A. The Engineer shall submit to the designated representative of Director of Department of Engineering monthly progress reports covering all phases of design by the 151h of every month in the format required by the City. B. If the Engineer determines in the course of making design drawings and specifications that the construction cost estimate of$ 156,400.00(as estimated on Exhibit B-4)will be exceeded,whether by change in the scope of the project, increased costs or other conditions,the Engineer shall immediately report such fact to the City's Director of the Department of Engineering and, if so instructed by Director of the Engineering Department, shall suspend all work hereunder. EXHIBIT B-2 (SUPPLEMENT TO ATTACHMENT B) HOURLY RATE SCHEDULE CITY OF FORT WORTH STORM WATER UTILITY PROJECT OAKRIDGE TERRACE,LINDA LANE, & DOTTIE LYNN PKWY SUPPLEMENTAL AGREEMENT NO. 1 CITY Project No.00474 DOE No. 5414 Employee Classification Rate/Hour Principal $258.00 Project Manager/Planner $160.00 Senior Engineer/QA-QC $160.00 RPLS $125.00 Project Engineer $117.00 Design Tech. $81.00 CADD Tech. $ 58.00 Clerical $ 60.00 2-Man Survey Crew $91.00 3-Man Survey Crew $124.00 4-Man Survey Crew $167.00 Reimbursables Cost+ 10% Mileage $0.505 Per Mile Reproduction work will be at current commercial rates. Subcontractors will be paid for at actual invoice cost plus ten percent (101/6). 4278 Exhibit B-2 EXHIBIT B-3A SUMMARY OF TOTAL PROJECT FEES City of Fort Worth Storm Water Utility Project Oakridge Terrace, Linda Lane, & Dottie Lynn Parkway SUPPLEMENTAL AGREEMENT No. 1 City Project No. 00474 DOE No. 5414 TOTAL CONSTRUCTION COST $ 156,400.00 BASIC ENGINEERING DESIGN FEE: Estimated Construction Cost $ 156,400.00 TSPE Curve A 7.9% Basic Charge $ 12,355.60 15% Fee Reduction (Construction) 85.0% Basic Fee $ 10,502.00 SPECIAL SERVICES FEE M/WBE % M/WBE Field Surveys(S&A) $ 4,550.00 $ 4,550.00 100.0% Easement Preparation (S&A) $ 3,300.00 $ 3,300.00 100.0% Hydraulics& Hydrology Basin Analysis $ - $ - 0.0% Bid Tabulation $ - $ - 0.0% Public Meetings (Maximum 2) $ - $ - 0.0% SUBTOTAL(SPECIAL SERVICES) $ 7,850.00 $ 7,850.00 100.0% CONSTRUCTION SERVICES Construction Phase Services $ - $ - 0.0% As-Built Drawings $ - $ - 0.0% SUBTOTAL (CONSTRUCTION SERVICES) $ - $ - 0.0% REPRODUCTION (Assumes 1 contract with 20 total sheets) 6 Sets of Review Plans $ 36.00 $ - 0.0% 16 Sets of Preliminary Plans (Utility Clearance) $ 96.00 $ - 0.0% 50 Sets of Construction Plans $ 300.00 $ - 0.0% 50 Sets of Specifications $ - $ - 0.0% 2 Sets of As-Built Plans $ 12.00 $ - 0.0% 1 Set of Mylars $ 20.00 $ - 0.0% Mounted Exhibit for Public Meetings $ - $ - 0.0% SUBTOTAL (REPRODUCTION) $ 464.00 $ - 0.0% 10% SUB-CONTRACTOR MARK-UP $ 785.00 TOTAL LUMP SUM FEE $ 19,601.00 $ 7,850.00 40.0% PROPOSED MIWBE SUBCONSULTANTS PROPOSED SERVICES FEES % CONTRACT Spooner&Associates Field Survey $ 4,550.00 23.2% Spooner&Associates Easement Preparation $ 3,300.00 16.8% TOTAL M/WBE�,(City M/WBE Goal = 18%) $ 7,850.00 40.0% PROPO E6��7N-M/WBE SUBCONSULTANTS NONE EXHIBIT`B-3B" FEE SUMMARY CITY OF FORT WORTH STORM WATER UTILITY PROJECT OAKRIDGE TERRACE,LINDA LANE, & DOTTIE LYNN PKWY SUPPLEMENTAL AGREEMENT No. 1 CITY PROJECT NO. 00474 DOE NO. 5414 ***STORM DRAINAGE*** OPINION OF PROBABLE CONSTRUCTION COSTS $ 156,400.00 CURVE"A" 7.9%X 0.85 =6.715% ENGINEERING DESIGN $ 10,502.00 DESIGN SURVEY(1,400 LF @$3.25/LF) (S&A) $ 4,550.00 EASEMENT PREPARATION (6 @$550 EA) $ 3,300.00 REPRODUCTION $ 464.00 TOTAL PAVING& STORM DRAINAGE FEE $ 18,816.00 10%FOR SUB ($ 7,850.00) $ 785.00 TOTAL FEE $ 19,601.00 SUMMARY OF TOTAL FEE AND BREAKDOWN OF DESIGN FEE (LESS SURVEY FEE) A. SUMMARY OF TOTAL FEE Service Description Water Sewer Paving/Drainage Total Engineering Services $ 0.00 $ 0.00 $ 11,751.00 $11,751.00 Surveying Services $ 0.00 $ 0.00 $ 7,850.00 $ 7,850.00 Total $ 0.00 $ 0.00 $ 19,601.00 $ 19,601.00 B. BREAKDOWN OF WATER, SEWER AND PAVING FEES(LESS SURVEY FEES) Total Paving/Drainage Fee(less survey fee)Breakdown by Concept,Preliminary and Final Design 1. Concept(30%)=(Total Drainage Fee—Survey Fee)x(0.3) =$ 3,525.00 2. Preliminary(60%)=(Total Drainage Fee—Survey Fee)x(0.6) =$ 7,051.00 _3. Final_Livo)_(Total Drainage Fee—Paving Fee)x(0.1) =$ 1,175.00 EXHIBIT`B-3C" CITY OF FORT WORTH STORM WATER UTILITY PROJECT OAKRIDGE TERRACE,LINDA LANE, & DOTTIE LYNN PKWY SUPPLEMENTAL AGREEMENT NO. 1 CITY PROJECT No. 00474 DOE No. 5414 BREAKDOWN FOR REPRODUCTION FEE: REPRODUCTION FEE TOTAL = $ 464.00 6 Sets of Plans (Review) (6 sets x $6/set) = $ 36.00 16 Sets of Plans (Utility Clearance) (16 sets x $6/set) = $ 96.00 50 Sets of Plans (Bid Sets) (50 sets x $6/set) = $ 300.00 1 Sets of Mylars (4 sheet x $5/sheet) = $ 20.00 2 Sets of Plans (As-Builts) (2 sets x$6/set) = $ 12.00 EXHIBIT "B-4" OPINION OF PROBABLE COST SUMMARY CITY OF FORT WORTH STORM WATER UTILITY PROJECT OAKRIDGE TERRACE,LINDA LANE, & DOTTIE LYNN PKWY SUPPLEMENTAL AGREEMENT NO. 1 CITY PROJECT No. 00474 DOE No. 5414 Drainage Improvements: Water $ 0.00 Sewer $ 0.00 Paving & Drainage $ 156,400.00 TOTAL $ 156,400.00 i Dannenbaum Engineering Corporation SUPPLEMENTAL AGREEMENT No. 1 ENGINEER'S PRELIMINARY OPINION OF CONSTRUCTION COST PROJECT: City of Fort Worth February 29,2008 Linda Lane Drainage Improvements Difference Between Original&Revised Designs PROJECT MANAGER: Dena Johnson,PE DEC Job No.0042-78 ITEM DESCRIPTION UNIT QUANTITY UNIT TOTAL NO. PRICE AMOUNT Paving Improvements: 1 UTILITY ADJUSTMENT LS 1 $10,000.00 $ 10,000.00 2 PROVIDE TRAFFIC CONTROL LS 15 000.00 - 3 PROJECT DESIGNATION SIGNS E4 500.00 - 4 REMOVE EXISTING ASPHALT PAVEMENT SY 467 3.00 1,400.00 5 REMOVE EXISTING CONCRETE PAVEMENT SY 1,350 8.00 16,800.00 6 REMOVE EXISTING 6"CURB&18"GUTTER LF 296 3.00 900.00 7 PROP.18"CL.111 R.C.P. LF 5 63.00 300.00 8 PROP.24"CL.111 R.C.P. LF 47 74.00 3 500.00 9 PROP.30"CL.III R.C.P. LF 280 87.00 24 400.00 10 PROP.36"CL.III R.C.P. LF 234 100.00 23 400.00 11 PROP.42"CL III R.C.P. LF 540 125.00 67 500.00 12 PROP.48"CL.III R.C.P. LF 175.00 - 13 PROP.54"CL.III R.C.P. LF - 190.00 - 14 PROP.60"CL.III R.C.P. LF 200.00 15 PROP.36"CL Ili R.C.P.BY TUNNELING LF 120 435.00 52,200.00 16 PROP.6'X6'R.C.BOX LF 400.00 17 PROP.STD.20'INLET EA 2 3,800.00 ,600.00 18 PROP.STD.10'INLET EA 8 2 350.00 18,800.00 19 PROP.STD.8'SQUARE MANHOLE EA 4,500.00 20 PROP.STD.6'SQUARE MANHOLE E4 1 3,500.00 3,500.00 21 PROP.STD.5'SQUARE MANHOLE E4 1 3,000.00 3,000.00 22 PROP.STD.4'SQUARE MANHOLE EA 4 2 500.00 10 000.00 23 TRENCH SAFETY LF 660 2.00 1,300.00 24 TRENCH EXCAVATION&BACKFILL CY 7 12.00 100.00 25 REMOVE EXISTING INLET EA 500.00 - 26 REMOVE EXISTING STRUCTURE E4 2,000.00 - 27 REMOVE 24"RCP LF 450 5.00 (2300.00) 28 REMOVE 36"RCP LF 8.00 29 JPROP.STRUCTURAL EXCAVATION CY 6 15.00 100.00 30 PROP.CONCRETE HEADWALL,WING,TOE AND APRON CY 4 400.00 (1,600.00) 31 HMAC PAVEMENT REPAIR SY 433 35.00 15 200.00 32 CONCRETE PAVEMENT REPAIR SY 10 50.00 500.00 33 6"THICK TOPSOIL,COMPLETE IN PLACE CY 91 14.001 1,300.00 34 PROP.6"CURB&18"GUTTER LF 240 20.00 4,800.00 35 REINFORCED CONCRETE VALLEY GUTTER SF 350.00 - 36 CONCRETE SIDEWALKS AND DRIVEWAYS SF 1,350 4.50 6,100.00 37 WHEEL CHAIR RAMPS EA 500.00 - 38 REMOVE EXIST.CONCRETE SF 1,260 15.00 18 900.00 39 SODDING SY 653 5.00 3300.00 40 12"ROCK RIPRAP INCLUDING 4 IN BEDDING CY 90.00 SUBTOTAL $ 96,800.00 Contingencies(10%) 9,800.00 TOTAL CONSTRUCTION COST-Dottie Lynn Parkway Drain Improvements $ 106,600.00 v'JDO Dannenbaum Engineering Corporation SUPPLEMENTAL AGREEMENT No. 1 ENGINEER'S PRELIMINARY OPINION OF CONSTRUCTION COST PROJECT: City of Fort Worth Dottie Lynn Parkway Drainage Improvements February 29,2008 Difference Between Original&Revised Designs PROJECT MANAGER: Dena Johnson,PE DEC Job No.0042-78 ITEM DESCRIPTION UNIT QUANTITY UNIT TOTAL NO. PRICE AMOUNT Paving Improvements: 1 UTILITY ADJUSTMENT LS - $10,000.00 $ - 2 PROVIDE TRAFFIC CONTROL LS - 15,000.00 - 3 PROJECT DESIGNATION SIGNS EA - 500.00 - 4 REMOVE EXISTING ASPHALT PAVEMENT SY - 3.00 - 5 REMOVE EXISTING CONCRETE PAVEMENT SY - 8.00 - 6 REMOVE EXISTING 6"CURB&18"GUTTER LF - 3.00 - 7 PROP. 18"CL.111 R.C.P. LF 690 63.00 43,500.00 8 PROP.24"CL.III R.C.P. LF - 74.00 - 9 PROP.30"CL.III R.C.P. LF - 87.00 - 10 PROP.36"CL.III R.C.P. LF 75 100.00 7,500.00 11 PROP.42"CL.III R.C.P. LF - 125.00 - 12 PROP.48"CL.III R.C.P. LF - 175.00 - 13 PROP.54"CL.III R.C.P. LF - 190.00 - 14 PROP.60"CL.III R.C.P. LF - 200.00 - 15 PROP. 18"CL.III R.C.P.BY TUNNELING LF 25 435.00 10,900.00 16 PROP.6'X6'R.C.BOX LF - 400.00 - 17 PROP.STD.29 INLET EA - 3,800.00 - 18 PROP.STD. 19 INLET EA - 2,350.00 - 19 PROP.STD.8'SQUARE MANHOLE EA - 4,500.00 - 20 PROP.STD.6'SQUARE MANHOLE EA - 3,500.00 - 21 PROP.STD.5'SQUARE MANHOLE EA - 3,000.00 - 22 PROP.STD.4'SQUARE MANHOLE EA 1 2,500.00 2,500.00 23 TRENCH SAFETY LF 6151 2.00 1,200.00 24 TRENCH EXCAVATION&BACKFILL CY 510 12.00 6,100.00 25 REMOVE EXISTING INLET EA - 500.00 - 26 REMOVE EXISTING STRUCTURE EA 2 2,000.00 4,000.00 27 REMOVE 24"RCP LF - 5.00 - 28 REMOVE 36"RCP LF - 8.00 - 29 PROP.STRUCTURAL EXCAVATION CY - 15.00 - 30 PROP.CONCRETE HEADWALL,WING,TOE,AND APRON CY - 400.00 - 31 HMAC PAVEMENT REPAIR SY - 35.00 - 32 CONCRETE PAVEMENT REPAIR SY - 50.00 - 33 6"THICK TOPSOIL,COMPLETE IN PLACE CY 322 14.00 4,500.00 34 PROP.6"CURB&18"GUTTER LF - 20.00 - 35 REINFORCED CONCRETE VALLEY GUTTER SF - 350.00 - 36 CONCRETE SIDEWALKS AND DRIVEWAYS SF - 4.50 - 37 WHEEL CHAIR RAMPS EA - 500.00 - 38 CHANNEL EXCAVATION CY 15.00 - 39 SODDING SY 367 5.00 1,800.00 40 12"ROCK RIPRAP INCLUDING 4"BEDDING CY - 90.00 - SUBTOTAL $ 45,200.00 Contingencies(10%) 4,600.00 TOTAL CONSTRUCTION COST-Dottie Lynn Parkway Drain Improvements $ 49,800.00 g:\1210\4095- 2Wdmin\Project\Conts_$\Alt Analysis\4278-32_Estimate SA#1.xls