Mill Creek (HHEI)

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1 Section 401 OEPA Water Quality Certification Application TRU Transportation Improvements Project PID Aug Table A Streams Affected by the Proposed Project Stream STA Description & HUC Total Receiving Distance to Drainage QHEI/HHEI OEPA Use Riparian Corridor Designation Length Impacted Length (ft) Stream Receiving Stream (mi) Area (mi 2 ) Score Designation and Adj. Habitats Culvert Garden Creek Replacement / Extension (134') Mill Creek (QHEI) WWH Wooded Stream 1* Grapevine Creek Stream Stream *Includes impacts at 3 locations. Culvert Replacement / Extension (183') and Realignment (239') Culvert Replacement (122') Culvert Extension (123') Culvert Extension (124') Mill Creek (HHEI) Mod. Class II PHWH Wetland Swine Creek (QHEI) MWWH Wetland / Pasture Grapevine Mod. Class Creek (HHEI) II PHWH Wetland Grapevine Mod. Class Creek (HHEI) II PHWH Pasture

2 Section 401 OEPA Water Quality Certification Application TRU Transportation Improvements Project PID Aug Table B Wetlands Affected by the Proposed Project Wetland STA HUC Cowardin et al. ORAM v5.0 OEPA Total Wetland Impact Area (acre) Adjacent Proximity to Other Designation Classification Score Category Size (acre) Temporary Permanent Habitats Surface Waters A PEM 53 2 >3 acres Meadow Abutting Garden Creek B PEM <0.1-acre Pasture Abutting Stream 1 C PEM 43 Modified 2 >3 acres Pasture Abutting Grapevine Creek D PEM 43 Modified 2 >3 acres Pasture Abutting Grapevine Creek E PEM 43 Modified 2 >3 acres Meadow Abutting Grapevine Creek G PEM 26 1 >3 acres Meadow Abutting Stream 4

3 Section 401 OEPA Water Quality Certification Application TRU Transportation Improvements Project PID Feb Table C Nature of Proposed Activities by Impacted Feature for the Preferred Alternative A. STREAMS Existing Channel Disturbed Due to Placement of Proposed Structure, Highway Fill, Channel Change or Channel Protection Existing Channel Disturbed Due to Temporary Crossing Site/Feature Approx Station Location Garden Creek Proposed Length of Excavation Below OHWM Fill Below OHWM Fill Below OHWM Structure or Channel Length of Channel Action Disturbed Volume Area Volume Area Disturbed** Volume Area (acres) 62' long, 22'x7' 55 cy concrete culvert (concrete) / and temporary 163 cy (RCP) / cofferdam 134 ft NA NA 95 cy (fill) ac 10 ft 38.9 cy #1-111 long, 8 x4 concrete culvert #2-72 long, 42 concrete culvert #3 239' of 68 cy realignmnet and (concrete) / 38 two temprary cy (RCP) / cofferdams 422 ft NA NA cy (fill) ac cy Stream 1* & long, 12 x5 61 cy concrete culvert (concrete) / 77 and temporary cy (RCP) / 77 Grapevine Creek cofferdam 122 ft NA NA cy (fill) ac 10 ft 25.9 cy ' extension on both sides of 108" 97 cy concrete culvert (concrete) / and temporary 173 cy (RCP) / Stream cofferdam 123 ft NA NA 177 cy (fill) ac 10 ft 44.4 cy ' extension on both sides of 7 x4 26 cy concrete culvert (concrete) / 32 and temporary cy (RCP) / 81 Stream cofferdam 124 ft NA NA cy (fill) ac 10 ft 17.8 cy *Includes impacts at 3 locations **Temp fill for cofferdams is within the footprint of permanent fill, therefore does not add to the overall stream length impacted. B. WETLANDS Direct Impacts (Within Construction Limits) Indirect Impact Area Approx Station Total Area Proposed Volume Area Excavated / (Outside of Feature(s) Location Description Impacted Action Excavated Volume Filled Filled Construction Limits) A PEM ac Roadway Fill cy ac NA B PEM ac Roadway Fill 0 45 cy ac NA C PEM ac Roadway Fill 0 32 cy ac NA D PEM ac Roadway Fill cy ac NA E PEM ac Roadway Fill cy ac NA G PEM ac Roadway Fill 0 66 cy ac NA C. Whole Project Summary of Activities Total Project Lineal Stream Disturbance Total Length Disturbed Due to Proposed Structure, Highway Fill, Channel Change or Channel Protection Length Disturbed due to Temporary Crossing Net Length Disturbed Total Project Excavation Stream Excavated Wetland Excavated Total Excavation Volume Area Volume Area Volume Area Volume Area Volume Area Volume Area 1,838 cy 2,612 cy (perm) / (perm) / cy cy (temp) ac 774 cy ac (temp) ac 925 ft NA 925 ft NA NA NA NA NA NA Total Project Fill Stream Filled Wetland Filled Total Filled

4 Section 401 OEPA Water Quality Certification Application TRU Transportation Improvements Project PID Aug Table D Proposed Lowering of Water Quality by the Preferred and Antidegradation Alternatives Alternative Preferred Direct Stream Impacts 925 ft (0.178 ac) Aquatic Hab.(QHEI) / Use / Stream Flow Aquatic Biota T&E Species WWH / MWWH / Mod. Class II PHWH Expected Impacts by Alternative Temporary Displacement Terrestrial Plant / Animals (Riparian Area) Wetlands Summary No Adverse Effect Minimal ac Minor wetland and stream impacts. No significant impacts to other resources. WWH / Minimal Deg. 925 ft (0.178 ac) MWWH / Mod. Class II PHWH Temporary Displacement No Adverse Effect Minimal ac Minor wetland and stream impacts. No significant impacts to other resources. Non-Deg None NA NA None None None No Impacts

5 Section 401 OEPA Water Quality Certification Application TRU Transportation Improvements Project PID Aug Table E Proposed Stream Mitigation for the Preferred and Antidegradation Alternatives Preferred Design and Minimal Degradation Alternatives Type of Watershed HHEI Mitigated Length Stream Name Impacted Length Mitigation Impacted Mitigated* QHEI Score Score On-Site Off-Site Garden Creek 134 ft Credits NA ft Stream ft Credits NA ft Grapevine Creek 122 ft Credits NA ft Stream ft Credits NA ft Stream ft Credits NA ft *Stream impacts will be mitigated through utilization of credits at ODOT s North River Road Dam Pooled Stream Mitigation Area

6 Section 401 OEPA Water Quality Certification Application TRU Transportation Improvements Project PID Aug Table F Proposed Wetland Mitigation for the Preferred and Antidegradation Alternatives Preferred Design Alternative Type of Watershed ORAM v5.0 OEPA Mitigated Area Wetland ID Impacted Area Mitigation Impacted Mitigated Score Category On-Site Off-Site A ac Credits ac B ac Credits ac C ac Credits Modified ac D ac Credits Modified ac E ac Credits Modified ac G ac Credits ac *wetland impacts will be mitigated through the utilization of wetland credits at Cherry Valley Wetland Mitigation Bank. Minimal Degradation Alternative Type of Watershed ORAM v5.0 OEPA Mitigated Area Wetland ID Impacted Area Mitigation Impacted Mitigated Score Category On-Site Off-Site A ac Credits ac B ac Credits ac C ac Credits Modified ac D ac Credits Modified ac E ac Credits Modified ac G ac Credits ac *wetland impacts would be mitigated through the utilization of wetland credits at Cherry Valley Wetland Mitigation Bank.

7 Appendix D - Miscellaneous Wetland Data Forms (Davey Resources Group.) ORAM Forms (Davey Resources Group) QHEI Forms (Davey Resources Group) HHEI Forms (Davey Resources Group) Wetland Mitigation Bank/Pooled Mitigation Areas Supporting Documentation

44 Supplemental Compensatory Mitigation Discussion In the 2006 Application, the proposed compensatory stream mitigation for the 817 linear feet of impact included the removal of a low head dam commonly known as the North River Road Dam at River Mile on the Mahoning River. Due to project delays, a reduction in the scope of the proposed project, and the expiration of the previously-granted Individual Section 401 Water Quality Certification, the proposed stream mitigation in this Application has changed. Specifically, stream impacts under the Preferred Design Alternative have increased from 817 linear feet in the 2006 Application to 925 linear feet in this Application. Therefore, the proposed compensatory stream mitigation has been adjusted accordingly. The mitigation will still take place at ODOT s North River Road Dam Pooled Stream Mitigation Area at a 1.5:1 ratio. To satisfy this requirement, ODOT will utilize 1,388 linear-feet of stream credits from their available balance. In the 2006 Application, the proposed compensatory wetland mitigation for the 1.26 acres of impact included the utilization of 2.6 acres of credit at the Cherry Valley Mitigation Bank. Due to project delays, a reduction in the scope of the proposed project, and the expiration of the previously-granted Individual Section 401 Water Quality Certification, the proposed wetland mitigation in this Application has changed. Specifically, wetland impacts were reduced from 1.26 acres in the 2006 Application to acre in this Application. Therefore, the proposed compensatory wetland mitigation has been adjusted accordingly. The mitigation will still take place at the Cherry Valley Mitigation Bank sing a 1.5:1 ratio for Category 1 and a 2.0:1 ratio for Category 2 Wetlands. To satisfy this requirement, ODOT will utilize acre from their available balance.

Riparian Setback- What is that and what should I be doing? October 25th, 2016 Presented by: Anil Tangirala, PE, CFM, ENV SP

Riparian Setback- What is that and what should I be doing? October 25th, 2016 Presented by: Anil Tangirala, PE, CFM, ENV SP Agenda Introduction Stream and Riparian Impacts Ohio EPA Stormwater General Permit