V3 RESUBMISSION Response to Township Engineers Review 1 Dated November 3 2022

10 41. The Basin #2 — OS #5-6A detail on sheet SP-20 shows that the grate will be at elevation 418.00 whereas it shows on sheet SP-6 that the grate will be at elevation 419.00. This discrepancy must be resolved. PETRY RESPONSE: Sheet SP-6 has been revised to show a grate elevation of 418.00. 42. The Basin #2 — OS #5-6A detail on sheet SP-20 and Pond No. 1 — Basin #2 Pond Report in the Stormwater Management Report show that a 10 ft weir is proposed at elevation 418.00. The Applicant should clarify how a weir length of 10 ft was determined. PETRY RESPONSE: The weir length has been revised to be 4 feet at an elevation of 418.00. 43. The Basin #3 — OS #1-10 detail on sheet SP-20 shows that two 6" x 10" orifices are proposed at elevation 418.00 whereas the Pond No. 2 — Basin #3 Pond Report shows that two 6" x 10" orifices are proposed at elevation 417.00 and two 6" x 10" orifices are proposed at elevation 418.00. These discrepancies must be resolved. PETRY RESPONSE: The outlet structure details have been revised to match the Pond Report. 44. The Basin #3 — OS #1-10 detail on sheet SP-20 shows that a 6' weir is proposed at elevation 420.00 whereas the Pond No. 2 — Basin #3 Pond Report shows that the weir will be 4 ft long. This discrepancy must be resolved. PETRY RESPONSE: The weir length has been revised to 4 feet on the detail. 45. The Stormwater Management Report includes a New Jersey 24 Hour Rainfall Frequency Data chart which shows that the 100-year storm has a rainfall of 8.66" in Essex County. However, the Precipitation Reports show that a rainfall of 8.24" was used in the calculations for the 100-year, 24-hour storm. This discrepancy must be resolved. PETRY RESPONSE: The hydrograph models have been revised to use a rainfall of 8.66” for the 100-year, 24-hour storm.