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Module IV Incorporation of Construction Site BMPs into the Design Process

Module IV Incorporation of Construction Site BMPs into the Design Process. Upon completion, the student will be able to incorporate Construction Site BMPs into PID, PA/ED, and PS&E phases of the design process. This includes Completing Section 6 of the SWDR

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Module IV Incorporation of Construction Site BMPs into the Design Process

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  1. Module IVIncorporation of Construction Site BMPs into the Design Process

  2. Upon completion, the student will be able to incorporate Construction Site BMPs into PID, PA/ED, and PS&E phases of the design process. This includes Completing Section 6 of the SWDR Developing a phase appropriate BMP strategy Estimating costs for BMPs Preparing Final PS&E package Module IV Objectives 2

  3. PID PA/ED PS&E Project Study /Project Scope Summary Report Project Report Working Drawings ID Potential WQ Impacts & BMP Strategy Refine BMP Strategy Select BMPs ID SSPs for Line Items BMP Cost Allocation Preliminary BMP Cost Estimate Prepare Line items & Lump Sum Cost estimates Construction Site BMPs and the Design Process

  4. Construction Site BMPs Are Detailed in Section 6 of the Storm Water Data Report Section 6 of the Storm Water Data Report is separated into three distinct parts, as follows: • The Construction Site BMP strategy • Quantity and cost information • Documentation of Construction Division’s concurrence 4

  5. What is a Construction Site BMP Strategy? • It is a discussion of the selected Construction Site BMPs in a short narrative • The level of detail will be different during the following phases: • Project Initiation Document (PID) • Project Approval/Environmental Document (PA/ED) • Plans, Specifications & Estimates (PS&E) 5

  6. Example Project • Roadway Widening • Central Expressway • $50 Million project • Widen from two to four lanes • Elevate roadway • Construct wall and bridge structures • Grade embankments PID Phase 6

  7. Project Information Example Project • Construction Activities • Clearing and grubbing • Structure excavation • Roadway excavation • Roadway grading • Cuts and fills PID Phase 7

  8. Retaining Wall Drainage System Additional Right of Way Embankment Slope Access Road 8

  9. Adobe Creek Bridge Structure Access Point Stockpile Area New Roadway 9

  10. How Do You Develop the Construction Site BMP Strategy at the PID Phase? • Use Section 2 (“Selecting/Implementing Construction Site BMPs”) of the Construction Site BMPs Manual to identify BMPs for the project. • The level of detail should include BMP categories to be implemented. • What is an acceptable strategy at the PID phase? At the PID phase, the strategy should be very general. Give a list of BMP categories to be implemented. 10

  11. Example Strategy at the PID Phase . . . Detail the required construction site BMP categories. 11

  12. Document Construction Division’s Concurrence PID Phase On July 21, 2005 a memo was received from the designated Construction representative (I.M. Concurring), concurring on the Construction Site BMPs strategy for this project. July 31, 2005, memo (I.M. Concurring) Acquire the Construction representative’s concurrence with Section 6, and document it in the narrative. 12

  13. Include an Estimate of Quantities and Costs PID Phase • As outlined in appendix F of the Project Planning and Design Guide, the percent of total cost method was used for estimating the cost of Construction Site BMPs. • At this time no Construction Site BMPs have been designated as separate bid line items. • This project will require a storm water pollution prevention plan (SWPPP). Construction Site BMPs will be incorporated into the project. • The costs to prepare the SWPPP and implement the Construction Site BMP work are estimated at 2% of the entire construction cost. See the storm water BMP cost summary (supplemental attachments) for specifics concerning costs. Indicate the method of BMP quantity and cost estimates used in the narrative, and reference the storm water BMP cost summary. Include it as a supplemental attachment. 13

  14. Construction Site BMPs Cost Summary PID Phase 14

  15. Example Project • Roadway Widening • Central Expressway • Widen from two to four lanes • Elevate roadway • Construct wall and bridge structures • Grade embankments PA/ED Phase 15

  16. Example Project More Project Information • Construction Activities • $60 M Project Costs • 27 acres (11 ha ) of DSA • Four construction stages • Slopes from flat to 1:1.5 • Slope lengths to 125 ft (20 m) • Discharges to an urban channel - Adobe Creek an ESA (not on 303[d] list) PA/ED Phase 16

  17. Example Project More Project Information • Construction Activities • Dewatering • Stream crossing • Vehicle and equipment • Material storage • Stockpiles • Demolition • Concrete placement PA/ED Phase 17

  18. How Do You Develop the Construction Site BMP Strategy at the PA/ED Phase? • Use Section 2 (“Selecting/Implementing Construction Site BMPs”) of the Construction Site BMPs Manual to identify BMPs for the project. • The level of detail should include BMP types to be implemented. • What is an acceptable strategy at PA/ED? At the PA/ED phase the strategy should become better detailed than in the PID phase, describing types of BMPs typically used on projects with a similar scope and range of construction activities. 18

  19. How Do You Deal with Complex Projects at the PA/ED Phase? • While not technically required, use the Construction Site BMP Consideration Form to aid in the selection of BMPs. • Use the appropriate parts of Checklist CS-1, as instructed by the form. • Develop a BMP strategy (types) from Checklist CS-1, Parts 1 – 6. 19

  20. Typical Strategy at the PA/ED Phase Run-off Control Slope Interruption Detail the required types of temporary BMPs. 20

  21. Include an Estimate of Quantities and Costs PA/ED Phase Although no water pollution control plan sheets were developed, initial quantities are estimated based on the type and length of the project. Indicate the method of BMP quantity and cost estimates used in the narrative, and refer to the stormwater BMP cost summary. Include it as a supplemental attachment. 21

  22. Construction Site BMPs Cost Summary Construction Site BMPs Cost Summary 22

  23. Document Construction Representative Concurrence PA/ED Phase On October 31, 2005 an e-mail was received from the designated Construction representative (Mina Changes) concurring on the Construction Site BMPs strategy for this project. October 31, 2005, e-mail (Mina Changes) Acquire the Construction representative’s concurrence with Section 6, and document it in the narrative. See Reference Material Tab Page 22 23

  24. Example Project • Roadway Widening • Central Expressway • $64 million widening project • Widen from two to four lanes • Elevate roadway • Construct wall and bridge structures • Grade embankments • Purpose • Select and deploy BMPs • Identify SSPs for separate bid line items • Estimate Line item and Lump Sum costs PS&E Phase 24

  25. Proposed Construction Site BMPs Deployment Plans (D-Plans) Example Project 25

  26. How Do You Develop the Strategy at the PS&E Phase? • Use the Construction Site BMP Consideration Form • Use the appropriate parts of Checklist CS-1 as instructed by the form • Level of detail should include specific BMP items and how the BMPs will be implemented 26 See Reference Material Tab Page 1

  27. Example Strategy Construction Site BMP Strategy PS&E Phase The Construction Site BMP strategy for this project shall consist of the following for soil stabilization and sediment control. Perimeter Controls shall consist of silt fence placed at the toe of all embankment slopes and gravel bag berms shall be placed along the construction pad above Smith Creek. Contour grading of slopes shall include surface roughening by walking the slopes with tracked equipment. Immediately thereafter, slope interruption devices such as fiber rolls shall be installed and soil stabilizer shall be hydraulically applied. Whenever possible, early implementation of permanent erosion control seeding or landscape planting shall be performed Perimeter controls silt fence gravel bag berms surface roughening fiber rolls Detail the specific BMPs to be incorporated into the project as prescribed by CS-1, Parts 1 – 6. 27

  28. Include an Estimate of Quantities and Costs PS&E Phase Quantities include take-offs increasing the quantity by 25% 28

  29. SSP 07-485 – Move in/Move out (Temp. Erosion Control) • SSP 20-020 - Move in/Move out (Erosion Control) • SSP 07-466 – Temporary Fence (Type ESA) • SSP 07-350 – Temporary Erosion Control • SSP 07-420 – Temporary Fiber Roll • SSP 07-470 – Temporary Gravel Bag Berm • SSP 07-395 - Temporary Cover • SSP 07-460 – Temporary Silt Fence • SSP 07-490 - Temporary Drainage Inlet Protection • SSP 07-480 – Temporary Construction Entrance • SSP 07-360 – Street Sweeping • SSP 07-395 - Temporary Cover • SSP 07-405 – Temporary Concrete Washout Facility • SSP 07-346 – Construction Site Management Indicate the method of BMP quantity determination and the method of cost estimates in the narrative, and refer to BMP quantity and cost estimates. Provide separate spreadsheets as attachments. 29

  30. Project Engineer to Sign & Date Ratify the Construction Site BMP Consideration Form PS&E Phase Acquire the Construction representative’s concurrence with Section 6, and initial and date the bottom of the form. Include the form as a required attachment to the SWDR. 30

  31. Document Construction Representative Concurrence PS&E Phase At a separate meeting for Construction Site BMP implementation conducted on December 31, 2005 the designated Construction representative (Mark S. Alott) concurred on the Construction Site BMPs strategy for this project. See the meeting minutes. December 31, 2005, (Mark S. Alott), meeting minutes Document concurrence with Section 6 in the narrative. 31

  32. BEEs and Construction Site BMPs Quantities BEES and Construction Site BMPs Quantities 32

  33. Construction Site BMPs Cost Summary Construction Site BMPs Cost Summary 33

  34. Summary of Cost Information by Phase 34

  35. $64 million widening project Three-year construction project Total length of 3 miles To be constructed in four stages Four bridges to be widened Four freeway-to–local street interchanges to be modified Class Exercise Time Appropriate Strategies for the Design Phases Is the strategy appropriate? Which design phase (PS&E, PA/ED, PID)? Exercise Tab Page 6 35

  36. Example Project Proposed Construction Site BMPs Deployment Plans • Use D-Plans to • Develop deployment quantity • Justify temporary BMP quantities in RE file • Develop WPC plans for PS&E (per District policy) • Obtain concurrence from Construction Division See Reference Material Tab Page 22 36

  37. Estimating Construction Site Costsin the PS&E Phase Select and deploy BMPs Identify SSPs for separate bid line items Conduct BMP takeoff for separate bid items Estimate Line item costs Estimate Construction Site Management Costs (Lump Sum) 37

  38. Construction Site BMP Estimating Example Project • Conduct BMP takeoff • Count and measure BMP quantities • Apply increase factor for complicated projects • Multiple stages • Multiple rainy seasons • Multiple construction activities • Proximity to 303(d) bodies or other sensitive environmental areas 38

  39. Specify Soil Stabilization Type Protect DSAs from rainfall by applying soil stabilization BMPs 39

  40. Separate Contract Items: List in Estimate (BEES) Include takeoff quantities in the Quantity Table Example Quantity Takeoff Spreadsheet Example Project 40

  41. Checklist CS-1, Part 1 Example Project (b) Increase the quantities by 25% for each additional rainy season. (The designated Construction representative may suggest an alternate increase.) 41

  42. Review plans to determine quantity Each direction Each stage Each major construction activity (structures, etc.) Breaks in K-rail Acceleration lanes Temporary Construction Entrance Estimating Example Project 42

  43. Proposed Construction Site BMPs Deployment Plans (D-Plans) Example Project 43

  44. Step 1: Determine total volume of concrete to be placed Step 2: Determine total volume of waste to be generated Step 3: Select the most likely types of washout to be used Step 4: Determine the number of washout facilities of the type selected Temporary Concrete Washout Estimating Example Project Exercise Tab Page 9 44

  45. Project Information $64 million freeway widening project Total length of 3 miles Four bridges to be widened Four freeway-to–local street interchanges to be modified Includes retaining walls and sound walls Requires local street work 60,160 yd3 (46,000 m3 ) of concrete to be placed Class Exercise Time Estimating Quantity of Concrete Washouts Example Project Determine the estimated quantity of temporary concrete washouts for the project Exercise Tab Page 9 45

  46. Step 1: Review standards (SC-7 and SSP 07-360) Step 2: Determine the duration sweeping may be required Step 3: Determine the number of sweepers required Street Sweeping Estimating Example Project Exercise Tab Page 10 46

  47. Step 1: Review standards (SC-7 and SSP 07-360) Street Sweeping Estimating Example Project 47

  48. Class Exercise Time Estimating Street Sweeping Cost Example Project • Project Information • $64 million freeway widening project • Three-year construction project • Total length of 3 miles • To be constructed in four distinct stages • Four bridges to be widened • Four freeway-to–local street interchanges to be modified • Includes local street work • Entails 392,385 yd3(300,000 m3) of roadway excavation • Requires 130,795 yd3(100,000 m3)of imported borrow Determine the estimated cost of street sweeping for the project Exercise Tab Page 10 48

  49. BEEs and Construction Site BMPs Quantities BEES and Construction Site BMPs Quantities 49

  50. The quantity is one Lump Sum, but how do we estimate the cost? Construction Site Management Estimating Example Project ? 50

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