Design and Review Process w w w. t r a n s p o r t a t i o n . o h i o . g o v 1
What Should Be Reviewed, and When? w w w. t r a n s p o r t a t i o n . o h i o . g o v 2
Overview Alternative Evaluation Report Stage 1 Design Submittal Stage 2 Design Submittal Stage 3 Design Submittal Design Review Checklists ODOT Post-Construction Review Responsibilities w w w. t r a n s p o r t a t i o n . o h i o . g o v 3
Overview Alternative Evaluation Report Stage 1 Design Submittal Stage 2 Design Submittal Stage 3 Design Submittal Design Review Checklists ODOT Post-Construction Review Responsibilities w w w. t r a n s p o r t a t i o n . o h i o . g o v 4
Alternative Evaluation Report (AER) L&D Vol. 3, Section 1403.4.2 AER Components: Consider BMPs in setting construction limits Preliminary BMP selection and sizing w w w. t r a n s p o r t a t i o n . o h i o . g o v 5
Overview Alternative Evaluation Report Stage 1 Design Submittal Stage 2 Design Submittal Stage 3 Design Submittal Design Review Checklists ODOT Post-Construction Review Responsibilities w w w. t r a n s p o r t a t i o n . o h i o . g o v 6
Stage 1 Design Submittal L&D Vol. 3, Section 1403.5.3 Stage 1 Review Submission Components: “Final Post Construction Storm Water Best Management Practices (BMP) Design Calculations and documentation of any BMP implementation issues” w w w. t r a n s p o r t a t i o n . o h i o . g o v 7
Stage 1 Design Submittal L&D Vol. 2, Section 1116.2 BMP Submittals; include the following information in the submittal: Estimated Project Earth Disturbed Area Treatment Percent Calculation BMP selected Drainage area mapping Total contributing area to BMP Contributing area within ODOT right-of-way Plan sheets showing locations of BMPs Calculations for each BMP Explanation of any area that is not treated w w w. t r a n s p o r t a t i o n . o h i o . g o v 8
Overview Alternative Evaluation Report Stage 1 Design Submittal Stage 2 Design Submittal Stage 3 Design Submittal Design Review Checklists ODOT Post-Construction Review Responsibilities w w w. t r a n s p o r t a t i o n . o h i o . g o v 9
Stage 2 Design Submittal BMP details in plan sheets (ODOT PDP) Incorporate comments from Stage 1 w w w. t r a n s p o r t a t i o n . o h i o . g o v 10
Overview Alternative Evaluation Report Stage 1 Design Submittal Stage 2 Design Submittal Stage 3 Design Submittal Design Review Checklists ODOT Post-Construction Review Responsibilities w w w. t r a n s p o r t a t i o n . o h i o . g o v 11
Stage 3 Design Submittal L&D Vol. 3, Section 1403.9.2 Stage 3 Detailed Design Activities: Preparation of the Project Site Plan Project Site Plan: L&D Vol. 3 Section 1308 Includes many pieces of information showing NPDES permit compliance w w w. t r a n s p o r t a t i o n . o h i o . g o v 12
Project Site Plan Project EDA Contractor EDA NOI EDA Name and location of receiving streams, surface waters, wetlands, and jurisdictional ditches Existing contours (drainage patterns) Flow arrows indicating proposed drainage patterns Culverts, storm sewers, and catch basins Post construction BMP information w w w. t r a n s p o r t a t i o n . o h i o . g o v 13
Project Site Plan Post construction BMP information: Show and label all BMPs on plan sheet Include BMP information in a table Lat. and long of each BMP Beginning and end position for linear BMPs Outlet position for other BMPs EDA treatment credit for each BMP Width for linear BMPs w w w. t r a n s p o r t a t i o n . o h i o . g o v 14
Project Site Plan Sample Project Site Plan: SP 1308-1 w w w. t r a n s p o r t a t i o n . o h i o . g o v 15
Prelim. BMP Sizing AER BMP Treat. Credit BMP lat. and long. BMP Calcs. Project EDA Stage 1 Project Site Plan Final BMP Sizing Drainage Areas Prelim. Space for BMP Stage 2 Prelim. BMPs ID’ed Treat. Needs vs. Treatment Credit Treatment % BMP Detail Sheets Stage 3 BMP Trib. Area w w w. t r a n s p o r t a t i o n . o h i o . g o v 16
Overview Alternative Evaluation Report Stage 1 Design Submittal Stage 2 Design Submittal Stage 3 Design Submittal Design Review Checklists ODOT Post-Construction Review Responsibilities w w w. t r a n s p o r t a t i o n . o h i o . g o v 17
Design Review Checklists w w w. t r a n s p o r t a t i o n . o h i o . g o v 18
Manufactured System w w w. t r a n s p o r t a t i o n . o h i o . g o v 19
Vegetated Filter Strip w w w. t r a n s p o r t a t i o n . o h i o . g o v 20
Vegetated Biofilter w w w. t r a n s p o r t a t i o n . o h i o . g o v 21
Extended Detention w w w. t r a n s p o r t a t i o n . o h i o . g o v 22
Bioretention w w w. t r a n s p o r t a t i o n . o h i o . g o v 23
Overview Alternative Evaluation Report Stage 1 Design Submittal Stage 2 Design Submittal Stage 3 Design Submittal Design Review Checklists ODOT Post-Construction Review Responsibilities w w w. t r a n s p o r t a t i o n . o h i o . g o v 24
Review Responsibilities ODOT Let Quality vs. Quality/Quantity treatment Treatment % Treatment area required Drainage area to each BMP ODOT R/W to each BMP WQ V or WQ F calculations Consistent with all L&D requirements w w w. t r a n s p o r t a t i o n . o h i o . g o v 25
Review Responsibilities Local Let Is a BMP required? Quality vs. Quality/Quantity treatment required? Is a BMP provided? Local holds NPDES permit and responsibility w w w. t r a n s p o r t a t i o n . o h i o . g o v 26
Local-Let Review Checklist w w w. t r a n s p o r t a t i o n . o h i o . g o v 27
Updates from Construction General Permit Larger WQ V Larger WQ F for manufactured systems Retention basin storage larger 2018: 75% below and 75% above 2019: 100% below and 100% above Stage 2 submittal before Jan. 31, 2019 Current Design After: larger WQ V and WQ F w w w. t r a n s p o r t a t i o n . o h i o . g o v 28
Updates from Construction General Permit What about volume reduction in new CGP? Allowed by Ohio EPA Unclear how they would be applicable on roadway projects ODOT OHE must approve any use of runoff reduction methods w w w. t r a n s p o r t a t i o n . o h i o . g o v 29
Questions ? Jon Prier, P.E. jonathan.prier@dot.ohio.gov 614-644-1876 w w w. t r a n s p o r t a t i o n . o h i o . g o v 30
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