PROJECT SCOPE OF WORK CITY OF TOWN AND COUNTRY STORMWATER PROGRAM

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Robert Curtis
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PROJECT SCOPE OF WORK CITY OF TOWN AND COUNTRY STORMWATER PROGRAM Project ID Number: 25-5 Problem: Stormwater collected from the neighborhood upstream is released at 9 Muirfield Lane and flows west

1 PROJECT SCOPE OF WORK CITY OF TOWN AND COUNTRY STORMWATER PROGRAM Project ID Number: 25-5 Problem: Stormwater collected from the neighborhood upstream is released at 9 Muirfield Lane and flows west toward Bellerive Country Club. The stormwater exits the outfall and has no defined flow path, creating yard erosion. In order to slow down the erosion, the residents have placed soil, brick, and rocks, but the improvements often get washed out by the high flows. The backyards of 6, 7, 2, 2, and 22 Muirfield Lane have soggy conditions and ditches carved out by erosion. Near 22 Muirfield Lane, the landscape changes from mowed lawns to a small rock swale. The rock has eroded away. Next is a wooded riparian area, which is hidden and likely not often accessed by the nearby residents. The entire reach is in very poor health. The stream is downcutting and widening. Portions of the stream have been lined with large riprap. There is little ground vegetation because the canopy of primarily honeysuckle shades and inhibits the growth of the understory. There is debris in the channel, including a lawnmower, fallen trees and branches, and a mess of live cables. The stagnant water in the stream is blue-green, cloudy, and smells of sewage. At the Bellerive Country Club, the flow is piped. Water is collected and is piped to the west. Proposed Solution: Install bioswales upstream of the project area to reduce flow coming through backyards. At the outlet of the pipe from Muirfield Ln, install a vegetated reinforced earthen swale until approximately the midpoint of the lot for. Construct grade controls at the outfall and again around the midpoint of the new swale. At the downstream end of the swale, install a level spreader to encourage the flow to spread out (much like it does in this location already). Farther downstream near the property line between 6 and 22 Muirfield Ln, remove the existing rock channel and install bank protection with a rock toe. End improvements where the channel moves into the wooded area, with a grade control to lock in the elevation. Required Easements: 5 Muirfield Lane (Temporary Construction Easement) 6 Muirfield Lane (Temporary Construction Easement) 9 Muirfield Lane (Temporary Construction Easement) 2 Muirfield Lane (Temporary Construction Easement) 22 Muirfield Lane (Temporary Construction Easement) Commentary: At the lower end of the reach, average reach slope is approximately 3.5% (typical stable slope is.5 to.7%). Scour line in this area is approximately 3-feet above channel bed, and the bed width is approximately 6-feet wide. Due to the odors in the area, it is recommended that MSD be contacted to investigate their sanitary sewer system. PROJECT SCOPE OF WORK

PROJECT INFORMATION SUMMARY CITY OF TOWN AND COUNTRY STORMWATER PROGRAM Project ID Number: 25-5 Number of Properties Impacted: Number of Easements Required: Number of Properties Benefited: Opinion of

2 PROJECT INFORMATION SUMMARY CITY OF TOWN AND COUNTRY STORMWATER PROGRAM Project ID Number: 25-5 Number of Properties Impacted: Number of Easements Required: Number of Properties Benefited: Opinion of Probable Construction Cost (OPC): (LBI) Project Points: 5 $94, Project Source: x Citizen Complaint Municipality Government Agency Category of Problem: Description Cost to Benefit Ratio: 24,93 Coordination Required: x MSD x Corps of Engineers x MO DNR MODOT County Highways City s City Parks County Parks x Municipality: City of Town & Country Railroad: x : Local Utility Service Providers Attached Supplemental Information: x Project Scope of Work x Conceptual Plan Drawing x Itemized Opinion of Probable Construction Cost (OPC) x (LBI) Forms x Existing Condition Photos A: Frequent structural flooding from creeks or rivers (floodplain) B: Frequent structural flooding from overland flow (non-floodplain) C: Frequent roadway flooding D: Infrequent structural flooding from creeks or rivers (floodplain) E: Infrequent structural flooding from overland flow (non-floodplain) F: Infrequent roadway flooding G: High risk structural erosion H: High risk roadway erosion x I: Yard erosion J: Moderate risk structural erosion K: Moderate risk roadway erosion L: or flooding of common ground or unmaintained area M: Yard flooding N: from inadequate sinkhole O: from inadequate roadway drainage P: of stormwater system facilities Q: Notes: MSD/MO American Water Base Map Number(s): FEMA FIR Map Number(s): 7P4 2989C88K PROJECT INFORMATION SUMMARY

3 OPINION OF PROBABLE CONSTRUCTION COST CITY OF TOWN AND COUNTRY STORMWATER PROGRAM Project ID Number: 25-5 ITEM ESTIMATED UNIT EXTENDED NUMBER PAY ITEM DESCRIPTION QUANTITY UNIT PRICE PRICE Mobilization Lump Sum $2,6.35 $2, Bank Protection - Biostabilization 8 Square Yards $6. $,8. 3 Bioswale 76 Square Yards $77. $3, Clearing Square Yards $,. $,. 5 Excavation Class "B" 26 Cubic Yards $55. $, Excavation Class "C" 238 Cubic Yards $28. $6, Grade Control 27 Cubic Yards $5. $4,5. 8 Level Spreader Each $,. $,. 9 Rock Toe Protection 42 Square Yards $5. $4,83. Seeding & Live Staking 8 Square Yards $45. $8,. Sodding - Fescue 4 Square Yards $.5 $4,6. 2 Vegetated Reinforced Earthen Swale 295 Square Yards $5. $3, Protection and Restoration of Site Lump Sum $,3.53 $,3.53 SUB-TOTAL - CONSTRUCTION: $, Estimated Engineering Fee: $2,. Estimated Geotechnical Engineering Fee: $6,. Estimated Property Survey/Strip Map Preparation Fee: $4,85. Estimated Property Title/Easement Search Report Fee: $2,. Estimated Topographic Survey Fee: $6,8. Estimated Property Rights Acquisition Document Preparation Fee: $2,25. Estimated Cost of Easements: $5,. Estimated Construction Survey Fee: $583. SUB-TOTAL: $49, % Contingency: $44,825. TOTAL: $94,24.69 OPINION OF PROBABLE CONSTRUCTION COST

4 Project Id Number: Ladue Rd (Golf Course) Total Calculated :.4 ROW Yard Subtotal Yard 2 Swale / Berm 3 Yard > / year Life / Limb / year / 5 years Property Value. / years Multiplier Multiplier.

5 Project Id Number: Muirfield Ln Total Calculated :.4 ROW Yard Subtotal 2 Yard Swale / Berm Yard > / year Life / Limb / year / 5 years Property Value. / years Multiplier Multiplier.

6 Project Id Number: Muirfield Ln Total Calculated :.9 ROW 9 Yard 3 Subtotal 2 Yard 6 Swale / Berm 6 Yard > / year Life / Limb / year / 5 years Property Value. / years Multiplier Multiplier.

7 Project Id Number: Muirfield Ln Total Calculated :.4 ROW Yard Subtotal Yard Swale / Berm Yard > / year Life / Limb / year / 5 years Property Value. / years Multiplier Multiplier.

8 Project Id Number: Muirfield Ln Total Calculated :.4 ROW Yard Subtotal Yard Swale / Berm Yard > / year Life / Limb / year / 5 years Property Value. / years Multiplier Multiplier.

9 Project Id Number: Muirfield Ln Total Calculated :.5 ROW 3 Yard 3 Subtotal 6 Yard 6 Swale / Berm 7 Yard > / year Life / Limb / year / 5 years Property Value. / years Multiplier Multiplier.

10 Project Id Number: 25-5 Total Calculated :.9 ROW 3 Yard 3 Subtotal 6 Yard Swale / Berm Yard > / year Life / Limb / year / 5 years Property Value. / years Multiplier Multiplier.

11 Project Id Number: Muirfield Ln Total Calculated :.4 ROW Yard Subtotal Yard Swale / Berm Yard > / year Life / Limb / year / 5 years Property Value. / years Multiplier Multiplier.

12 Project Id Number: Muirfield Ln Total Calculated :. ROW 3 Yard Subtotal 4 Yard 6 Swale / Berm 6 Yard > / year Life / Limb / year / 5 years Property Value. / years Multiplier Multiplier.

13 Project Id Number: Muirfield Ln Total Calculated :.4 ROW Yard Subtotal 2 Yard Swale / Berm Yard > / year Life / Limb / year / 5 years Property Value. / years Multiplier Multiplier.

14 25-5 (25) (28) Outlet structure at 9 Muirfield Lane. Looking west from near 2 Muirfield Lane, just downstream of outlet pipe. (25) near 9 Muirfield Ln. (28)

15 25-5 (25) (28) Looking east from near 2 Muirfield Lane. Conditions appear to be slightly worse on site. Looking southwest. After eroded channels, topography flattens out and less erosion is observed. Runoff enters a rock channel near trees seen straight ahead in picture. (28) Rock swale near 6 & 22 Muirfield Ln. Downstream portion is washed out due to inadequate rock size. (28)

16 25-5 Looking upstream at 5 Muirfield Lane; no low vegetation is established, erosion occurring. (25) Cloudy blue-green water in stream, smells of sewage; possible location of sanitary break. (25) Typical stream reach at 5 Muirfield Lane. (25) Damaged utilities just north of stream near 23 Muirfield Lane. (25) Downstream point of stream reach at 2925 Ladue Road (Bellerive Country Club). (25) 2-inch pipe outfall at 22 Muirfield Lane.

25 34 29 26 24 27 7P-3D 495 52 V U 2925 5 5 7P4-5S Proposed Improvements Strip Map Limits Topo Limits FEMA Flood Hazard Zone 5 5 2 7P4-4D 7P4-2S Regulatory Floodway.

2% Annual Chance Flood Hazard 9 2 5 495 7P4-38D 5'' 2'' 7P4-S Easements Required Properties Impacted Properties Benefited Project Conceptual Cost Cost to Benefit

Proposed Solution Description 54 5 5 5 5 55 495 49 485 7P4-26D 2'' 53 2'' 52 5 2'' 7P4-27D 64 Feet inch = feet Warning: If this bar does not measure " then drawing

Remove and replace existing rock swale to the west. 7P4-28S 7P4-26S 4 5 535 7P4-36D 545 37 52 5 52 48 475 7 2'' 5 7.

17 P-3D V U P4-5S Proposed Improvements Strip Map Limits Topo Limits FEMA Flood Hazard Zone P4-4D 7P4-2S Regulatory Floodway.% Annual Chance Flood Hazard.2% Annual Chance Flood Hazard P4-38D 5'' 2'' 7P4-S Easements Required Properties Impacted Properties Benefited Project Conceptual Cost Cost to Benefit Ratio 36 7P4-34D Yard erosion and ponding is occurring in the backyards of several properties. Proposed Solution Description P4-26D 2'' 53 2'' '' 7P4-27D 64 Feet inch = feet Warning: If this bar does not measure " then drawing is not to scale 3 2 City of Town & Country Stormwater Program P4-27S Create a defined, reinforced swale at the outfall of the pipe. Remove and replace existing rock swale to the west. 7P4-28S 7P4-26S P4-36D '' $94,242 24,93 Problem Description 7P4-4S 7P4-37D Stormwater Gravity Main Proposed 7P4-7S 7P4-5S Stormwater Intake/Outfall Parcels 7P4-6S 22 Stormwater Manhole Pavement 35 7P4-4D Stormwater Inlet Impervious MUIRFIELD LN 2 '' '' " ) Sanitary Gravity Main Stormwater Channel Sanitary Manhole # * 7P4-39D 5 V U, %, % 2'' 7P-8S Existing -ft Contours 525 U V 7P-59S Project Location 25-5

PROJECT SCOPE OF WORK CITY OF TOWN AND COUNTRY STORMWATER PROGRAM

PROJECT SCOPE OF WORK CITY OF TOWN AND COUNTRY STORMWATER PROGRAM Project Name: 362 Featherstone Dr Project ID Number: 27-3 Problem: Anecdotal evidence suggests a natural spring exists in the backyard