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Home My WebLink About25-137 UACC SW Closeout Request939 main street rte 6a yarmouth port mass 02675 down cape engineering, inc civil engineers & land surveyors TRANSMITTAL November 21, 2025 FROM: Heather Cornell hcornell@downcape.com tel. (508) 362-4541 fax (508) 362-9880 Yarmouth Conservation RE: 125 & 133 Route 6A, South Yarmouth Request for Stormwater Permit Closeout DCE# 25-137 Conserv-UACC Method of Delivery: Email; In person drop off Attached: • DCE, Inc Stormwater Permit Closeout request • Drainage Inspection Report 11/20/2025 • Inspection Contract • As Built Site Plan revised 10/31/2025 • Site Inspection Reports —11 Reports CC: File 939 main street rte 6a yarmouth port mass 02675 land court surveys structural design site planning sewage system designs inspections permits down cape engineering, inc civil engineers & land surveyors October 30, 2025 Brittany DiRienzo, Conservation Administrator Yarmouth Conservation Commission Town of Yarmouth 1146 Route 28 South Yarmouth, MA 02664 RE. SW2021-002 UACC, 125 & 133 Route 6A; completed permit Dear Brittany & Commissioners: G tel. (508) 362-4541 fax (508) 362-9880 Daniel A. Ojala, P.E., P.L.S. Arne H. Ojala, P.E., P.L.S. Daniel E. Gonsalves, P.E., S.E. Craig J. Ferrari, E.I.T., S.E. Phellyp T. Tonial, E.I.T., S.E. In March 2022, the Commission issued a Stormwater Management Permit for the redevelopment of the above -referenced site. The scope of the redevelopment included the renovation of the existing buildings generally within their existing footprint. Additionally, the reconstruction of the existing parking lot to meet updated parking requirements in accordance with current regulations. Throughout the construction process, multiple site visits were conducted to confirm the proper installation and location of all stormwater and drainage structures, all of which are accurately shown on the final as -built site plan. Erosion and sediment control measures were actively maintained during construction to prevent discharge, and all stormwater structures were installed in accordance with the approved utilities site plan. All required inspections were completed in compliance with the Special Conditions outlined in the Stormwater Management Permit. As required under the permit, the following ongoing stormwater maintenance conditions are being complied with: • Bi-annual sweeping of all parking areas. • The owner shall provide quarterly inspections of all catch basins and retain records. Catch basins shall be cleaned once they reach 50% sediment depth or once every two years, whichever occurs first. This is to certify, to the best of my knowledge and belief, that all work has been completed in substantial compliance with the approved Stormwater Management Permit and its associated conditions. Based on this, we respectfully request a formal closeout of the Stormwater Management Permit for this site. Thank you for your consideration. Very truly yours, _ Daniel A. Ojala, PE, PLS Down Cape Engineering, Inc. PCE �'WtA OF MAI 9 DANIELA. 4JALA CIVIL No.46502 t � GISTS G�% DRAINAGE INSPECTION REPORT DOWN CAPE ENGINEERING INC. LOCATION OF INSPECTION: 125 & 133 ROUTE 6A, YARMOUTHPORT UROLOGY ASSOCIATES OF CAPE COD DATE OF INSPECTION: 11/20/2025 DRAINAGE STRUCTURES INSPECTED: CATCH BASINS #1-6 MEASURED DEPTH OF SEDIMENT: TCH BASIN #1: SEDIMENT DEPTH = 0.20 FEET TCH BASIN #2: SEDIMENT DEPTH = 0.25 FEET CATCH BASIN #3: SEDIMENT DEPTH = 0.45 FEET CATCH BASIN #4: SEDIMENT DEPTH = 0.30 FEET CATCH BASIN #5: SEDIMENT DEPTH = 0.20 FEET CATCH BASIN #6: SEDIMENT DEPTH = 0.10 FEET INSPECTION NOTES: ALL CATCH BASINS WERE FOUND TO HAVE LESS THAN 2 FEET OF SEDIMENT, AT THIS TIME NO FURTHER ACTION REQUIRED. ADDITIONALLY, DUMPSTER COVERS WERE INSPECTED AND WERE FOUND TO BE IN WORKING ORDER. REFERENCE THE AS BUILT SITE PLAN PREPARED BY DOWN CAPE ENGINEERING, INC. DATED 10-31-25 FOR CATCH BASIN NUMBERS. r I" OF 4f4kq ° DANIELA. l- OJALA CIVIL c: No -46502 IS STE1311' /ONAL - i down cape engineerinq, inc. CIVIL VWIN05 & LAN125URWY0IZ5 959 MAIN 5f / ROUTS 6A YARMOUTWOU, MA 02675 508) 362-4541 FAX ( 508) 362-9880 ;, Date: 11-20-2025 (contract date: 11/20/25 to 11/20/2028). TO: John Austin- via email to JAustin@UACC.CC FROM: Daniel A. Ojala, PE, PLS down cape engineering, inc. Email address: downcape@downcape.com RE: #125)-133 Route 6A Down Cape Engineering proposes to do the required inspections based on the Stormwater O&M Plan and Stormwater Permit recorded in the Registry of Deeds. The scope of work will be to physically measure the sediment depth in all the onsite catch basins, inspect the dumpster covers, and provide a report to the Yarmouth Conservation Department summarizing the findings. If sediment depths are over two feet in thickness, we would recommend a catch basin cleaning company be retained by UACC for maintenance. The O&M plan we prepared recommended 2x per year, but the Permit they issued required 4x per year. I would suggest hiring us to have a meeting with the Commission to request reducing the scope to 2x per year after a year of observations. Our fee for each visit, now four times per year, would be )er visit/report. We can hold this fee level for the three years of contract length, whether 2 or 4 visits per year. The bi-annual parking lot street sweeping is not included in our fee, nor basin cleaning if required. If this is acceptable please sign below as an acknowledgement and we will invoice you for each visit within a month of taking the readings, terms net in 30 days. Please do not hesitate to contact me with any questions at 1-508-362-4541 x106. 00,& 11 /20/2025 John Austin, UACC date