263-22 Proposal - Mott MacDonald.pdf

Mott MacDonald Zayibeth Carballo, PE.-LS, CME, CFM, Assistant Municipal Engineer July 26, 2022 Page 6 of 10 ● Property boundaries of maintenance yard(s) and other ancillary operations (type) As requested, we have now updated our proposal to include the completion of this mapping in advance of the permit issuance to provide for West Orange to continue to remain in compliance with the Tier A permit as completion of this task will be effective date of permit (EDP+36 months). Our scope and more detailed qualifications and pricing is included in a separate proposal letter dated September 9, 2022. 2.4 Item 12 (Outfall Pipe Stream Scouring - Part IV.B.6.b) The NJDEP letter requires West Orange conduct stream scouring investigations and complete the appropriate SPPP forms, to be completed digitally and provide to the Town. Although you have indicated that the SPPP was to be principally undertaken directly by West Orange, there may be some efficiency to provide for Mott MacDonald to conduct these investigations in conjunction with the outfall mapping updates since the outfall mapping data collection requires field inspection of the receiving streams. Hence, in conjunction with Item 2.5 above, we propose an additional 12 hours of inspection, scientist and GIS Specialist time to conduct the field investigations and complete the SPPP forms for West Orange to use in their SPPP overall submission. This estimate is based on evaluating 75 outfalls, if additional outfalls are encountered, we will notify the Town. 2.5 Item 14 Stormwater Facilities Maintenance (Municipally Owned or Operated) - Part IV.C.1.a The NJDEP letter requires West Orange to prepare a written program of long-term cleaning, operation and maintenance of all municipally owned or operated stormwater facilities. Based upon our most recent conversation, it is assumed that West Orange will take the lead on this task and compile the necessary information. Mott MacDonald assumes a very limited scope to review and confirm the program meets the requirements of the permit and will assist the Township in developing a maintenance log digital tool app that can be used using NJDEP’s example templates and then linked to the Township GIS system. For this task we assume 44 hours of engineering and GIS specialist time but limit our scope to the assistance in developing the tool to be used by West Orange. 2.6 Item 15

to the Township GIS system. For this task we assume 44 hours of engineering and GIS specialist time but limit our scope to the assistance in developing the tool to be used by West Orange. 2.6 Item 15 Stormwater Facilities Maintenance (Privately Owned or Operated) - Part IV.C.1.b Similar to Item 14, private long-term cleaning and maintenance is required on privately owned and operated stormwater facilities. Moreover, the Township is required to submit the maintenance procedures also similar to Item 14. However, it is believed the intent is to have the Township enforce the maintenance and collect the procedures from the private entity for inclusion in the SPPP. As such, it is assumed that West Orange will take the lead on this task and compile the necessary information. Mott MacDonald assumes a very limited scope to review and confirm the program meets the requirements of the permit and will assist the Township in developing a maintenance log digital tool app that should be deployed to the private entities so they can submit their records to the Township. Again the