HomeMy Public PortalAboutP002230503_3/6/2024 3:29:36 PMPost-Construction Stormwater BMP Inspection and Maintenance Record
263481
MSD P Number:P002230503
Project:Bayer New Trash Compactor
Address:800 North Lindbergh Boulevard 63137
Customer:Bayer
Contact:Anna Tang
Phone Number:314-694-3169
Email:anna.tang@bayer.com Inspector(s):Marianne Pott
Company:Stormwater STL LLC
Address:6514 Lansdowne Avenue 63109
Constr. Approval:August 28, 2014 Phone:(314) 229-8334
Record Start Date:September 10, 2015 E-mail:marianne@stormwater-stl.net
Stormwater Treatment Facilities:Total Count:
Count Type Description Count Type Description
BIOR BIORETENTION/RAINGARDEN (A)P-1 MICROPOOL EXTENDED DETENTION POND (A)
BIOS BIORETENTION/RAINGARDEN (SMALL) (A)P-2 WET POND (A)
GRWD GRAVEL WETLAND (A)P-3 WET EXTENDED DETENTION POND (A)
CIST CISTERN/DRYWELL (U)P-5 POCKET POND (A)
O-1 DRY SWALE - LARGE (A)W-2 ED SHALLOW WETLAND (A)
O-2 DRY SWALE - SMALL (A)W-3 POND/WETLAND SYSTEM (A)
O-3 WET SWALE - LARGE (A)SCDN STORM CREDIT - DISCONNECT NONROOFTOP (A)
O-4 WET SWALE - SMALL (A)SCDR STORM CREDIT - DISCONNECT ROOFTOP (A)
HDSP PROPRIETARY HYDRODYNAMIC SEPARATOR SCES STORM CREDIT - ENVIRONMENTALLY SENSTV(A)
I-1 INFILTRATION TRENCH (A)SCNA STORM CREDIT - NATURAL AREA CONSERVA (A)
I-2 INFILTRATION BASIN (A)SCOC STORM CREDIT - OPEN CHANNEL USE (A)
1 AMDS AMENDED SOILS (A)SCSB STORM CREDIT - SHEET FLOW TO BUFFER (A)
GRRF GREEN ROOF (A)F-1 SURFACE SAND FILTER (A)
O-5 FILTER STRIPS - LARGE (A)F-3 PERIMETER SAND FILTER (A)
O-6 FILTER STRIPS - SMALL (A)F-4 ORGANIC FILTER (A)
PPAS PERMEABLE PAVEMENT - ASPHALT (A)F-5 POCKET SAND FILTER (A)
PPBK PERMEABLE PAVEMENT - PAVER BLOCK (A)F-PR PROPRIETARY BMP FILTER (U)
PPCO PERMEABLE PAVEMENT - CONCRETE (A)F-2 UNDERGROUND SAND FILTER (U)
PPGR PERMEABLE PAVEMENT - GRAVEL (A)
DET DETENTION WQS UNDERGROUND WATER QUALITY STORAGE
DET U UNDERGROUND FBAY PRETREATMENT FOREBAY
Inspection, Maintenance and Annual Report Submission Record:
Date Activity Date Activity
2015.09.10 Initial Inspection
2015.12.09 Inspection
2016.02.23 Inspection
2016.06.20 Inspection
2016.09.14 Inspection
2016.12.06 Inspection
2017.03.02 Inspection
2017.06.19 Inspection
2017.09.13 Inspection
2017.12.12 Inspection
2018.03.06 Inspection
2018.06.21 Inspection
2018.09.10 Inspection
2018.12.11 Inspection
2019.03.11 Inspection
2019.06.13 Inspection
2019.09.17 Inspection
2019.12.11 Inspection
2020.03.05 Inspection
2020.06.26 Inspection
2020.09.16 Inspection
2020.12.08 Inspection
2021.03.19 Inspection
2021.06.08 Inspection
2021.09.08 Inspection
2021.12.07 Inspection
2022.03.03 Inspection
2022.06.22 Inspection
2022.09.22 Inspection
2022.12.07 Inspection
2023.03.07 Inspection
2023.06.07 Inspection
2023.09.20 Inspection
2023.12.06 Inspection
1
Bayer Equip #:
Post-Construction Stormwater BMP Inspection Report
263481
MSD P Number:P002230503
Project:Bayer New Trash Compactor
Address:800 North Lindbergh Boulevard 63137
Inspection Date:December 6, 2023
Time:8:00 AM
Weather:37°F; Sunny
Last rain event:0.01" on December 5, 2023
Last one inch rainfall:1.62" on September 27, 2023
Bayer Inspector(s):Marianne Pott
Anna Tang Company:Stormwater STL LLC
314-694-3169 Address:6514 Lansdowne Avenue 63109
anna.tang@bayer.com Phone:(314) 229-8334
E-mail:marianne@stormwater-stl.net
Last Inspection Date:September 20, 2023
Inspector's Summary:
Status of Open Action Items Identified During This Reporting Year:
Action Items Identified During This Inspection:
No new action items were identified during this inspection.
Page 1
Bayer Equip #:
Customer:
Contact:
Phone Number:
Email:
This document has been prepared exclusively for the Customer noted above (Customer) by Stormwater STL LLC (Stormwater STL), based on a visual inspection conducted on the date(s) noted
above. Unless specifically indicated, Stormwater STL did not undertake any forensic investigation at this location on the date(s) noted. The opinions expressed in this document relate only to the
condition of the site and the Post-Construction Stormwater BMP(s) as observed by Stormwater STL on the date(s) noted. The content of this document reflects the opinion of Stormwater STL only
and Stormwater STL makes no express or implied representation or warranty with respect to the conditions described or the functionality of the systems identified in this report. Other than Customer,
third parties who rely upon this document do so solely at their own risk and Stormwater STL disclaims all liability, damages or loss with respect to such reliance. Neither Customer nor Stormwater
STL, nor any person acting for and/or on behalf of those companies, assumes any responsibility, duty of care or liability to any person to update the contents of this document or to distribute any
subsequently learned information to recipients of this document other than to Customer. This disclaimer must accompany every copy of this document, which is an integral document and must be
read in its entirety.
Construction for stormwater BMP associated with this project was approved by MSD on August 28, 2014. The initial inspection revealed that compost had
not been added to the area. According to the approved plans, 2" of compost was to be tilled into existing soil "to a depth of 6 inches for turf cover."
Reconstruction was completed before the inspection on February 23, 2016. Sampling at several places in the component confirms that compost has been
tilled to a depth of six inches. Turf has become established throughout the turf reinforcement mat. After carefully reviewing each component of the system
and finding that no maintenance is needed (see below), I am pleased to report that:
Based on what was observed, this stormwater treatment component appears to be functioning in accordance with the design intent.
Amended Soil Area CONTROL for weedy growth along north edge (Bayer) --- COMPLETED
Post-Construction Stormwater BMP Inspection Report
Field Observations:
Amended Soil (GIS-BMP-5928)
Assessment Comments
Green
Green
Green
Green
Miscellaneous
Assessment Comments
Green
Green
Green
Green
N/A
Photographs
Inspector's Notes
Page 2
Attribute
Trash/debris/leaves Weedy growth was removed, photo 1; some leaves present
Turf coverage Turf grass has spread across majority of turf reinforcement mat, photos 1, 2 & 6
Attribute
Complaints None of which I'm aware
Mosquitoes
Water ponding on surface/erosion MONITOR slight erosion below east edge of curb opening, photo 4
Compost Multiple probes confirm 2" compost tilled to a depth of 6", photo 3
Bayer New Trash Compactor - December 6, 2023
See attached sheet
Encroachment(s) on facility or easement
Public Hazard(s)
Other (describe)
September 10, 2018 - BMP is in good condition. No standing water after recent heavy rain events.
December 11, 2018 - No changes noted that would impact functionality.
March 11, 2019 - No changes noted. Turf coverage estimated at about 90 -95% of turf reinforcement mat.
June 13, 2019 - No changes noted. No standing water or erosion noted after heavy rain events this spring. The BMP appears to be in good condition.
September 17, 2019 - No ponding water was noted. Amended soil area, as well as surrounding lawn, was aerated. This should assist in the spread of turf
across the erosion control blanket as air, water and nutrients can penetrate down to the grass roots better.
December 11, 2019 - No changes noted that would impact functionality.
March 5, 2020 - No changes were noted.
June 26, 2020 - Area is free of leaves and appears to function as designed.
September 16, 2020 - No changes were noted.
December 7, 2022 - No changes were noted.
December 8, 2020 - Area has collected some leaves, but no changes were noted that would impact the amended soil area's functionality.
March 19, 2021 - Area was fully dry within 18 hours following a 2.04" rain event.
June 8, 2021 - Area is showing great coverage of turf and no ponding water.
September 8, 2021 - No changes noted.
December 7, 2021 - No changes noted.
March 3, 2022 - No changes noted.
June 22, 2022 - Slight erosion is occurring below the double layer of erosion control matting at the east edge of the curb opening that should be monitored.
September 22, 2022 - No changes noted.
December 7, 2022 - No changes noted.
March 7, 2023 - No changes noted.
June 7, 2023 - No changes noted.
September 20, 2023 - Weeds are starting to grow along the north edge of the amended soil area. This edge should be trimmed out.
December 6, 2023 - Weeds growing along the north edge of the amended soil area were trimmed back. Some leaves present.
BAYER –
New Trash Compactor Stormwater BMP Photos
December 6, 2023
1. LOOKING NORTH ACROSS AMENDED SOIL (GIS-
BMP-5928) SHOWING WEEDS WERE REMOVED
2. LOOKING EAST ACROSS AMENDED SOIL (GIS-
BMP-5928)3. VIEW OF COMPOST TILLED TO 6” DEEP IN SOIL
4. MONITOR SLIGHT EROSION OCCURRING BELOW
THE EAST EDGE OF CURB OPENING
5. SOME SPOTS OF THINNER TURF COVERAGE
REMAIN 6. TURF COVERAGE IN MARCH 2017