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8.e) Staff Report-Log House Landing-Part 4PRELIMINARY COST ESTIMATE QUINNELL AVENUE N IMPROVEMENTS PROJECT NO. N15.106565 FEBRUARY 2015 ESTIMATED TOTAL NO. ITEM UNITS QTY UNIT PRICE PRICE 02015 Bolton Menk, Inc., All Rights Reserved PRELIMINARY COST ESTIMATE QUINNELL AVE N: 1 MOBILIZATION LS 1 $14,000.00 $14,000.00 2 TRAFFIC CONTROL LS 1 $3,000.00 $3,000.00 3 REMOVE SIGN EA 27 $50.00 $1,350.00 4 CLEARING AND GRUBBING LS 1 $1,000.00 $1,000.00 5 SAWING BITUMINOUS PAVEMENT LF 250 $4.00 $1,000.00 6 SAWING BITUMINOUS DRIVEWAY PAVEMENT LF 80 $4.00 $320.00 7 RECLAIM BITUMINOUS PAVEMENT SY 16,600 $3.00 $49,800.00 8 REMOVE BITUMINOUS DRIVEWAY PAVEMENT SY 50 $3.00 $150.00 9 SUBGRADE PREPARATION SY 16,600 $0.75 $12,450.00 10 STORM WATER QUALITY IMPROVEMENTS LS 1 $20,000.00 $20,000.00 11 SUBGRADE EXCAVATION CY 1,100 $10.00 $11,000.00 12 SELECT GRANULAR BORROW CY 1,100 $10.00 $11,000.00 13 GEOTEXTILE FABRIC SY 3,320 $1.00 $3,320.00 13 AGGREGATE BASE, CLASS 5 TN 2,350 $12.00 $28,200.00 14 AGGREGATE SHOULDERING, CLASS TN 700 $18.00 $12,600.00 15 TYPE SP 12.5 NON -WEARING COURSE MIXTURE (2,B) TN 2,900 $62.00 $179,800.00 16 BITUMINOUS MATERIAL FOR TACK COAT GAL 1,250 $3.50 $4,375.00 17 TYPE SP 12.5 WEARING COURSE MIXTURE (2,B) TN 1,700 $64.00 $108,800.00 18 RAILROAD CROSSING APRON LS 1 $5,000.00 $5,000.00 19 PATCH BITUMINOUS DRIVEWAY SY 50 $25.00 $1,250.00 20 PATCH GRAVEL DRIVEWAY TN 110 $18.00 $1,980.00 21 STREET SWEEPER WITH OPERATOR HR 5 $125.00 $625.00 22 4" DOUBLE SOLID LINE, YELLOW EPDXY LF 7,100 $0.65 $4,615.00 23 SIGN PANELS, TYPE C EA 15 $250.00 $3,750.00 TOTAL CONSTRUCTION COST QUINNELL AVE N: $479,385.00 02015 Bolton Menk, Inc., All Rights Reserved PRELIMINARY COST ESTIMATE The following are transcribed from the meeting recording but they are not official until the Board of Managers approves the minutes at its March 11 meeting. Jim Shaver, Administrator CMSCWD CMSCWD MOTION 1 REGARDING LOG HOUSE LANDING ON February 11, 2015 Steve Kronmiller moved to direct the Administrator to apply for a grant from SCRA, Great River Greening or similar non-profit, to repair or replace the boat ramp at Log House Landing to minimize future erosion. Dave DeVault seconded. Motion passed 5-0 CMSCWD MOTION 2 REGARDING LOG HOUSE LANDING ON February 11, 2015 Steve Kronmiller moved to authorize the District to fund 25% of cost of the Log House Landing road improvements up to $85,000 conditioned on DNR grant funding for the project and District approval of final plans and specifications of the road design. Dave DeVault seconded. Motion passed 5- 0 CMSCWD MOTION 3 REGARDING LOG HOUSE LANDING ON February 11, 2025 Steve Kronmiller moved to authorize the District to spend up to $10,000 to conduct a scientific study to determine the actual amount of erosion and how big the solution needs to be. Furthermore the District will withhold review and funding for the Log House Landing Road Project until the study is complete or it is determined that the cost of the study exceeds the authorized amount. Polasik seconded. Motion passed 3-2 with Lindberg and DeVault against. Board members present: Kristin Tuenge, Dave DeVault, Steve Kronmiller, Tom Polasik, and Eric Lindberg Absent: Andy Weaver February 11,2015 To the Board: It has come to my attention that there are many questions concerning the amount of the annual sediment loss at the Log House project. Not only have members of the community questioned the validity of the figures that the District has been using but both Scandia City officials and CMSCWD Board members are asking to re-evaluate our figures and to provide a method to compute a cost to the sediment in order to validate the District's involvement with the project. I provide the following and believe it sufficient basis for a decision: SEDIMENT REDUCTION CALCULATION: I asked the Washington Conservation District engineer to provide RUSLE data to be used in the determination of the estimated sediment loss at Log House Landing. I told him to use the same calculators that the Minnesota Board of Water and Soil Resources developed to evaluate their projects and grant applications. The Universal Soil Loss Equations are used world-wide in agricultural and engineering projects. I did not provide the name of the project but told him that it required calculations of class five gravel for these estimated lengths and slopes: 1. An 800 foot length with an 11' slope (ie. the road) 2. A 30 foot length with a 3° slope ( the landing) 3. A 40 foot length with a 25° slope (the boat ramp) He was unable to find the soil characteristic for class 5 but he used the numbers for the gravelly soil in the southern part of Washington County as determined by the soils map of the County. He provided the following soil loss (ie. sediment) data: 1. 11.94tons/acre/year 2. .39tons/acre/year 3. 3.78tons/acre/year I assumed that acreage reduction in sediment was equivalent to the impervious surface installed in conjunction with the project and created the spreadsheets on pages 3 and 4 to figure the soil loss (sediment) reduced in covering the erodible surface with impervious or pavement. The spreadsheets also converts units in order to compare square foot reduction costs: 1 acre=43,560 square feet, 1 ton = 2,000 pounds. I used the following widths of surfaces: road =13 feet, landing= 158 feet, and boat ramp= 15 feet. With this input, the soil loss (sediment) reduction is calculated to be 5.890 pounds (2.94 tons) per year. If sediment reduction is figured for the entire 1,200 foot length of the project, the amount calculated is 8,741 (4.37 tons) pounds per year. EVALUATION OF THE PROJECT: Although the District brought this project to Scandia as a water quality project, there are many other public benefits that are gained as a result of this project. In fact, the DNR's contribution of %: of the total project cost is not based on water quality at all but rather the increased accessibility to public Page 1 of 4 CMSCW D 2/10/2015 5:04 PM recreational resources. Among the benefits the City receives are reduced maintenance, added public safety, and increased amenities to and identification as an important public space and park in the City. They receive these benefits and more with the payment of 25% of the total cost of the project. The District has gained its desired water quality benefit for the cost of the remaining 25% of the project. Washington County Public Works has estimated the cost of the project from $280,000 to $340,000. The District's cost to achieve the reduction in TSS (total suspended solids or sediment) is thus a range from $70,000 to $85,000. The details of the calculation are shown on pages 3 and 4. Log House Landing Cost per Pound of Sediment Reduction CMSCWD Cost of Project 800 foot length 1,200 foot length $70,000 $11.88 per Ib. sediment $8.00 per Ib. sediment $85,000 $14.43 per Ib, sediment $9.72 per Ib. sediment The chart below is taken from Cost Efficiency and Other Factors in Urban Stormwater BMP Selection a presentation in November, 2013 by Greg Busch of the Maryland Department of the Environment. (Currently looking for Mn data and will bring to meeting if available) It presents the total cost of sediment removal per pound of various BMPs overtheir expected life, from $4 per pound to $42 per pound. As you can see, the costs computed above for sediment removal at the Log House Landing project align well with this range of costs for various BMPs in this report. This data supports Carnelian - Marine -St. Croix Watershed District's cost share participation with the City of Scandia for 25% of the total project. Pollutant Removal C03101BMP Page 2 of 4 CMSCW D 2/10/2015 5:04 PM Acle TN TP T38 Oeall faM C-1 cd CmIM fiesta! W tlWcered mliv dmN and AquWl P.J. delivmc delivery tlNi.ad OALVENTCOUNV BMP Pala 005 p0a C"Stmol Ion O°al Sam cl Annual ETN dip TSS allamp EIacWercss AWW lemooedpar remold nmo it o Po Wena Crib M Lost removal removal moval BMP Nem° Eln acnaw Fares lil Im"m PSIrm10 Wmal PMunHI IS1PounE PS1PounE all M6 Yearl F rpa l Y -d Q lr a re.l al mp 1 I 8axelention&.n1Mens all urtn 5,6261 00 01 a59 $9.409 $A. 3353 30 Sill $254 Um 10 Bia"Non8aanaercnsA& Imcervroua av 1 60 1.1 381 .5 ffi—a 8Wal n, on Ssw n Fmou 4851] 3] 02 514 Impervbu Ulbnnll".ReWQon Im0arvmu 0.0 84 20 7159 Ill $50.0[0 $905 20 all I'm Will 11 PmmaaOePmmemMNBanaaMVeO pa"O49°ima" a 00 38 05 135A Sall $0 $765 Sl Ill $1288 $9,351 37 BOxtSmeprq rmcervpus 0.0 02 00 337 Sl $0 JU51 1 20 $753 wr $72c0S 1 22 WWn FaW,R . al uN°n 1M.2 24 128.8 $8,750 SSM $383 20 Ill SH] 53,135 8 Uixln RaOl Pill Imlmb 2&2 34391A Uaen M.'Ravius F1/vlous U. a y,0 21 $14 UEan Final Bal pl urban a 25 50140.4 1507 so $203 M 5531 $109 57% 4 Nau9amer0GaWcas ull a 007&4S F02 00 m SO 353 1 SST $5] $892WWn TreeflnNYrB Garviouarxbna 22.0 38 tab Saw $20.409 =a ID N,WS $523 T,3]] 42 aV UNan 9A,. 12 Ill PRO 2030 Sim 20 151] fMB $2330 6 ]%3 1.]293.6pmouembn ec 3,68&2 10 385 Page 2 of 4 CMSCW D 2/10/2015 5:04 PM Area Length in feet slope width in feet acres RUSTL Calculation Tons lbs/acre /yr total lbs Cost Per Lb Removal Total Cost Road 800 11' 13 0.238 75 tons/acre/ye ar=- 11.94 23880 5701. 38 $ 12 $ 67,732 Land! ng Ing 3' 158 0.108 82 tons/acre/ye ar= 0.39 780 84.88 $ 12 $ 1,008 Ramp 40 25' 15 0.013 77 tons/acre/ye ar= 3.78 7560 104.1 3 $ 12 $ 1,237 Total Cost of TSS removal 5890. 39 $ 69,977.7 8 Enter Cost per pound from right side of chart below 11.88 Area Length in feet slope width in feet acres RUSTL Calculation Tons lbs/acre /yr total lbs Cost Per Lb Removal Total Cost Road 800 11' 13 0.238 75 tons/acre/ye ar= 11.94 23880 5701. 38 $ 14 $ 82,271 Land! ng 30 3' 158 0.108 82 tons/acre/ye ar- 0.39 780 84.88 $ 14 $ 1,225 Ramp 40 25' 15 0.013 77 tans/acre/ye ar= 3.78 7560 104.1 3 $ 14 $ 1,503 Total Cost of TSS removal 5890. 39 $ 84,998.2 7 Enter Cost per pound from right side of chart below 14.43 Page 3 of 4 CMSCWD 2/10/2015 5:04 PM Area Length in feet slope width in feet acres RUSTL Calculation Tons lbs/acre/ yr total lbs Cost Per Lb Removal Total Cost Road 1200 11° 13 0.3581 3 tons/acre/yea r-- 11.94 23880 8552.0 7 $ 10 $ 83,126 Landin g 30 3° 158 0.1088 2 tons/acre/yea r- 0.39 780 84.88 $ 30 $ 825 Ramp 40 25' 15 0.0137 7 tons/acre/yea r= 3.78 1 7560 104.13 $ 10 $ 1,012 Total Cost of TSS removal 8741.0 7 $ 84,963.2 4 Enter Cost per pound from right side of chart below 9.72 Area Length in feet slope width in feet acres RUSTL Calculation Tons lbs/acre /yr total lbs Cost Per Lb Removal Total Cost Road 1200 11° 13 0.358 13 tons/acre/ye ar= 11.94 23880 8552. 07 $ 8 $ 68,417 Landi ng 30 3° 158 0.108 82 tons/acre/ye ar- 0.39 780 84.88 $ 8 $ 679 Ramp 40 25° 15 0.013 77 tons/acre/ye ar= 3.78 7560 104.1 3 $ 8 $ 833 Total Cost of TSS removal 8741. 07 $ 69,928.6 0 Enter Cost per pound from right side of chart below 8 Page 4 of 4 CMSCW D 2/10/2015 5:04 PM