2026 05 Storm Water Management Report rcd 5 6 2026

Bioretention Basin: This area consists of 0.146 acres towards the front of the site which includes motor vehicle surfaces, impervious and grass areas. Under proposed conditions runoff generated by this area flows overland into the proposed bioretention basin via a 4’ wide curb cut. Proposed Conditions Input Summary Table Drainage Area Drainage Time of Curve Number Name Area Concentration (CN) (acres) (minutes) PDA-Roof Area 0.142 1 98 Impervious PDA-Bioretention 0.068 5.1 80 Basin (Pervious) PDA-Bioretention 0.078 0.5 98 Basin (Impervious) PDA-Uncontrolled 0.071 5.0 80 (Pervious) PDA-Uncontrolled 0.204 2.0 98 (Impervious) Proposed Conditions Flow Summary Table Drainage Current Adjusted Rainfall Projected Adjusted Rainfall Area Conditions Conditions Name Q2 (CFS) Q10 (CFS) Q100 (CFS) Q2 (CFS) Q10 (CFS) Q100 (CFS) POI #1 1.35 2.18 4.27 1.64 2.61 5.59 Point of Analysis #2 Study Area 2: This area consists of 0.042 acres which includes the portion of the area to be developed that drains to Prospect Avenue. In the proposed condition, this area will be occupied by concrete sidewalks installed per Township request, as well as lawn area similar to the existing condition. Stormwater runoff generated by this area flows overland to the right-of-way, as depicted on the Proposed Drainage Area Map. Proposed Conditions Input Summary Table Drainage Area Drainage Time of Curve Number Name Area Concentration (CN) (acres) (minutes) PDA 2 – Impervious 0.017 0.8 98 PDA 2 – Pervious 0.025 3.5 80 Proposed Conditions Flow Summary Table

– Impervious 0.017 0.8 98 PDA 2 – Pervious 0.025 3.5 80 Proposed Conditions Flow Summary Table Drainage Current Adjusted Rainfall Projected Adjusted Rainfall Area Conditions Conditions Name Q2 (CFS) Q10 (CFS) Q100 (CFS) Q2 (CFS) Q10 (CFS) Q100 (CFS) POI #2 0.11 0.20 0.37 0.14 0.24 0.47 Mavis Tire Supply, LLC July 2025 DEC# 1956-24-04187 5 Last revised May 2026