GCPS TMDL Sampling Locations

TMDL Sampling Locations

Facility Point of DischargeOutfall/ Point of

DischargeReceiving Waters TMDL

BTC‐04.CB.DP Point of Discharge Middle Rouge River E. coli

BTC‐07.OP.DP Point of Discharge Middle Rouge River E. Coli

GCC‐14.MH.DP Point of Discharge Middle Rouge River E. coli

GCC‐19.MH.DP Point of Discharge Middle Rouge River E. Coli



GCC‐70.CB.DP Point of Discharge Middle Rouge River E. coli

GCC‐76.CB.DP Point of Discharge Middle Rouge River E. Coli

GCC‐80.MH.DP Point of Discharge Middle Rouge River E. Coli

GCC‐81.CB.DP Point of Discharge Middle Rouge River E. Coli

DGS‐01.CB.DP Point of Discharge Middle Rouge River E. coli

DGS‐05.CB.DP Point of Discharge Middle Rouge River E. Coli


DGS‐13.CB.DP Point of Discharge Middle Rouge River E. Coli

DGS‐15.MH.DP Point of Discharge Middle Rouge River E. Coli


Farmington 5‐6 Campus FRM‐18.MH.DP Point of Discharge Perrin Drain E. coli

GCM‐09.MH.DP Point of Discharge Middle Rouge River E. Coli

GCM‐12.CB.DP Point of Discharge Middle Rouge River E. Coli



GCM‐25.CB.DP Point of Discharge Middle Rouge River E. coli

GCM‐27.CB.DP Point of Discharge Middle Rouge River E. coli

LEC‐03.FS.DP Point of Discharge Perrin Drain E. coli

LEC‐06.FS.DP Point of Discharge Perrin Drain E. coli

LEC‐08.MH.DP Point of Discharge Perrin Drain E. Coli

LEC‐09.MH.DP Point of Discharge Perrin Drain E. Coli

Maplewood Community Center MMC‐02.CB.DP Point of Discharge Middle Rouge River E. coli

MML‐02.MH.DP Point of Discharge Middle Rouge River E. coli

MML‐04.MH.DP Point of Discharge Middle Rouge River E. coli

MML‐07.MH.DP Point of Discharge Middle Rouge River E. Coli

MML‐16.CB.DP Point of Discharge Middle Rouge River E. Coli

OBG‐01.MH.DP Point of Discharge Middle Rouge River e. Coli

OBG‐04.MH.DP Point of Discharge Middle Rouge River E. Coli

Transportation and School Board Complex GTC‐08.CB.DP Point of Discharge Morgan Drain E. Coli

Old Burger Site

Lathers Early Childhood and

Kindergarten Center

Garden City Public Schools

Memorial 1‐2 Campus

Douglas 3‐4 Campus

Garden City Middle School

Cambridge High School/ Garden City High

School Complex

Burger Transition Center

Updated 1/11/2021 *Highlighted Locations are Sample Locations

www.archenvgroup.com

healthAIR - Industrial Hygiene Services cleanWATER - Consulting & Testing Services

safeEARTH - Hazardous Waste & Recycling Services

DETROIT GRAND RAPIDS CHICAGO (248) 426-0165 (616) 930-4116 (847) 462-9687 Farmington Hills, MI Cedar Springs, MI Cary, IL

June 4, 2020 Mr. Neil Greene Director of Operations Garden City Public Schools 33980 Marquette Garden City, Michigan 48135 [email protected]

RE: Project # AE200001 GCPS Total Maximum Daily Load (TMDL) Sampling Report Burger Transition Center Dear Mr. Greene: Arch Environmental Group, Inc. recently conducted a round of TMDL Wet Weather Sampling at discharge point BTC‐04.CB.DP at the Burger Transition Center on May 15, 2020, in accordance with the applicable NPDES Permit requirements. TMDL sampling is used to determine the level of specific pollutants in the stormwater system by collecting samples from 50% of the district’s stormwater outfalls/discharge points during a representative wet weather event. The sampling results are then evaluated to determine if a particular point source needs to be addressed to reduce the pollutant load of the receiving waters. A report regarding the findings of this round of TMDL Sampling is attached. If you have questions regarding this report, please feel free to contact please feel free to contact the cleanWATER team at (248) 426‐0165. Sincerely,

Arch Environmental Group, Inc. Environmental Services

Steven Ripley Certified Industrial Site Stormwater Operator, I‐15964

TMDL Sampling Report Page 2

Project # AE200001 GCPS


TABLE OF CONTENTS

1.0 Project Summary

2.0 TMDL Sampling Procedures

3.0 TMDL Sampling Results

4.0 Conclusion

5.0 Best Management Practices to Reduce TMDL Pollutant Loads

Attachments:

TMDL Screening Inspection Log

Storm Sewer System Site Map

Analytical Results & Chain of Custody




1.0 / Project Summary

Arch Environmental Group, Inc. (AEG) recently conducted a round of Total Maximum Daily Load (TMDL) Sampling

for E. coli at discharge location BTC‐04.CB.DP at Burger Transition Center on May 15, 2020, in accordance with the

applicable National Pollutant Discharge Elimination System (NPDES) Permit requirements.

A TMDL describes the process used to determine how much of a pollutant a lake or stream can assimilate and sets

pollutant reduction targets for that water body. NPDES Municipal Separate Storm Sewer System (MS4) permits

require regulated public entities located within urbanized areas that discharge storm water to an MS4 which leads

to a water body designated with a TMDL, to demonstrate progress toward meeting Water Quality Standards (WQS).

If the TMDL was written for E. coli or Total Phosphorus (TP), the MS4 permits further require permittees to collect

representative samples of storm water discharges from their points of discharge to MS4s which lead to the impacted

water bodies.1 Based on a review of the sampling results, Stormwater Best Management Practices (BMP)

implementation will be reviewed and BMPs may be updated to ensure progress toward achieving TMDL pollutant

load reductions.

The receiving water body of Burger Transition Center is the Middle Rouge River. The Middle Rouge River has been

designated with TMDLs of E. coli and Biota/Sediment. Further details on the TMDLs listed can be found in the

documents “Total Maximum Daily Load for Biota for the River Rouge Watershed, Including Bishop and Tonquish

Creeks, Washtenaw, Wayne, and Oakland Counties” and “Total Maximum Daily Load for E. Coli for the Rouge River

Wayne and Oakland Counties, Michigan” Some examples of potential sources of E. coli in waterways include fecal

material from livestock, humans, wildlife, waterfowl such as geese, and sanitary systems.

2.0 / TMDL Sampling Procedures

Applicable TMDL sampling was conducted with guidance from the “Storm Water Sampling Guidance for Total

Phosphorus & E. coli.” Sampling was conducted at designated outfalls/discharge points after a dry period of

approximately 72 hours and during a rain event of approximately .25 inches or more. Please see the attached TMDL

Screening Inspection Log for specific rainfall amounts. Sampling was conducted on May 15, 2020 and the last

significant rain event was on May 15, 2020. The weather history for the rain event is available upon request.

When a dip‐cup or similar sampling device was needed to collect the sample, a blank sample was collected to ensure

no contamination was coming from the sampling device. The blank collected during this round of TMDL sampling

came back at zero (0) CFU for E. coli indicating that the sampling device used was not contaminated. The lab results

of the blank sample are attached. Furthermore, all sampling devices were decontaminated with bleach and distilled

water between each sampling location according to the protocol laid out in the “Storm Water Sampling Guidance

for Total Phosphorus & E. coli.” Each location sampled was analyzed for pH and temperature while on‐site and the

sampled discharge point (DP) was inspected for color, odor, and abnormal vegetative growth. The collected samples

were delivered to an external laboratory for analysis.

1 Storm Water Sampling Guidance for Total Phosphorus & E. coli. November 24, 2009. DEQ




3.0 / TMDL Sampling Results

E. coli: The WQS for E. coli is the maximum amount of E. coli that is allowable in surface waters of the state.

These standards are known as total body contact and partial body contact standards. Total body contact is

a more conservative standard used during the summer to protect swimmers during total body contact and

has the daily maximum of 300 CFU per 100 milliliters (mL). This applies to the warmer months of May 1st ‐

October 31stand is the standard being used in this report. Partial body contact is the daily maximum of 1,000

CFU per 100 mL and applies to the waterways year‐round. 2

Structure ID: BTC‐04.CB.DP Structure Type: Catch Basin Location: South of main entrance in grass

At the time of the sampling, clear water flow was noted, and BTC‐04.CB.DP was free of odors and abnormal

vegetative growth. AEG collected a grab sample from BTC‐04.CB.DP and the sample was screened for temperature

and pH in the field. An E. coli grab sample was delivered to an external laboratory for analysis. Results from the

sampling are summarized below. A more detailed TMDL Screening Inspection Log is also attached at the end of the

report.

Parameter: Results: TMDL Benchmark Standard: Units:

pH 7.98 6.5 ‐ 9 pH Units

Temperature 16.6 N/A Celsius

E. coli 115.3 300 CFU per 100mL

The sample results for BTC‐04.CB.DP did not identify elevated levels of pH or E. coli above the TMDL Benchmark

Standards. The reported levels for E. coli (115.3 CFU) are below the Michigan Public Health Department standards

for Total Body Contact (E. coli >300 CFU).

4.0 / Conclusion AEG did not identify any elevated levels of pH or E. coli above the TMDL Benchmark Standards for discharge location

BTC‐04.CB.DP sampled at Burger Transition Center on May 15, 2020.

It is the opinion of Arch Environmental Group, Inc. that the TMDL sampling results indicate good use of BMPs in

maintaining TMDL pollutant load reductions at Burger Transition Center. A list of those BMPs is provided below in

section 5.0. TMDL sampling will be conducted twice per permit cycle to continue to monitor for TMDL pollutant load

levels in accordance with the NPDES Permit requirements.

5.0 / Best Management Practices to Reduce TMDL Pollutant Loads

The Garden City Public Schools Stormwater Management Plan (SWMP) identifies and defines the districts BMPs to

comply with the Six Minimum Measures that are the front line in the nationwide effort to reducing polluted

stormwater discharges to our lake, rivers and streams. The Michigan Department of Environment, Great Lakes, and

Energy recognizes that having a Stormwater Management Plan in place built around the Six Minimum Measures

specified in the NPDES General Jurisdictional Permit have the potential to significantly contribute to the reduction

of TMDL Pollutants in the surface waters of the state. The Six Minimum Measures are listed below:

Public Education and Outreach Program (PEP)

2 “Michigan’s E. Coli Water Quality Standard Guidance” May, 2016. MDEQ




Public Involvement and Participation Program (PIP)

Illicit Discharge Elimination Program (IDEP)

Post Construction Stormwater Management Program

Construction Site Stormwater Runoff Control Program

Pollution Prevention/Good Housekeeping Program. The following is a list of prioritized TMDL best management practices from the districts SWMP that Garden City Public Schools should continue to implement in order to improve water quality impairments associated with the E. coli and Biota/Sediment TMDL of the Middle River Rouge. Prioritization of BMPs is based on Garden City Public Schools targeted TMDL pollutants. Priority is given to BMPs that reduce E. coli loads and address water quality for biota and dissolved oxygen.

E. COLI 1. GCPS will continue to use its website to provide the public information regarding local TMDL issues

(E. coli and biota TMDL Best Management Practice). 2. GCPS will continue to educate staff, faculty, and students using various venues including the “Seven

Simple Steps to Clean Water” program educational materials developed by the various watershed groups specifically related to these issues on the stormwater management webpage.

3. The district passed a post‐construction stormwater board resolution to require implementation of the stormwater standards for construction.

4. Adequately maintains vegetation around stormwater facilities, ditches, and ponds. 5. Provide training to applicable staff and confirm training from contractors including restrictions on the

use of phosphorous containing fertilizers, soaps, cleaners and other chemicals that could impact the separate storm drain system.

ALL TMDLs 1. GCPS will continue to use its website to provide the public information regarding local TMDL issues



3. The district passed a post‐construction stormwater board resolution to require implementation of the stormwater standards for construction.



GCPS strives to be good stewards of the land within their jurisdiction and to use appropriate Best Management

Practices (BMPs) to contribute to the improvement of water quality. GCPS is committed to practicing sound

stormwater management practices; including observance and adherence to all local, state, and federal stormwater

statutes, rules, and regulations.

Attachments: TMDL Screening Inspection Log Storm Sewer System Site Map Analytical Results & Chain of Custody cc: AE200001 project file


ID Number: Long:

Type:

Outfall Dimensions

Flow Characteristics

Sample ID And Information Lab Analysis: Results: TMDL Threshold: Units: Photo ID:

7.98 6.5 ‐ 9 pH units

16.6 N/A Celsius

115.3 300 CFU per 100mL

N/A N/A ug/L

Building:

Samplers:


Steven RipleyKellie Das

Structure Type Catch Basin

South of main entrance in grass

42.332873 83.339651

Location:

Yes, Trickle

Rainfall

Trickle

Lat:

Garden City Public Schools

5/15/2020

TMDL Sampling

Client:

Date

Inspection Type:

Standing Water Characteristics

Standing Water:

Clear

No

Flow Odor

Velocity of Flow:

Structure Information:

Observations:

12”

Discharge Point

BTC‐04.CB.DP

No

No

No

No

No

Abnormal Growth:

Sewage:

Oil Sheen:

No

Algae:

Bacterial Sheen:

UnlikelyOutfall Characterization:

Sample sent to Lab:

Total Rainfall (Inches): 0.77

Sample ID:

Temperature:

pH:

E. coli:

Total Phosphorus:

Other:

Other:

Other:

Time Collected:

Current Weather:

Last Rain Event:

Screening Location Type:

No

Staining:

Suds:

Odor:

Color:

Clear

No

Yes

No

Flow Observed:

Source of Flow:

Color of Flow:

Additional Comments:

BTC‐04.CB.DP TMDL

11:20 AM

< 48 Hours

Overcast

Catch Basin

Yes

Slimes:

Arch Environmental Group

37720 Interchange Drive,

Farmington Hills MI 48370

Phone: (248) 426‐0135

Fax: (248) 426‐0136


2105 Pless Drive Brighton, Michigan 48114 Phone (810)229-7575 Fax (810)229-8650 E-mail [email protected]

TM

May 18, 2020


37720 Interchange Dr.

Farmington Hills, MI 48335

Subject: Burger Transition Center TMDL

AE200001-GCPS

Dear Ms. Sendra :

The invoice for this project will be emailed separately. If you have any questions

concerning the data or invoice, please don't hesitate to contact our office. We

welcome your comments and suggestions to improve our quality systems. Please

reference Brighton Analytical, L.L.C. Project ID 65024 when calling or emailing.

We thank you for this opportunity to partner with you on this project and hope to

work with you again in the future.

Thank you for making Brighton Analytical, L.L.C. your laboratory of choice.

Attached are the results for the samples submitted on 05/15/2020 for the above

mentioned project. NELAP/TNI Accredited Analysis and EGLE Drinking Water

Certified Analysis will be identified in their respective reporting formats. Hard

copies can be supplied at your request for a fee of $20.00 per copy.

Sincerely,

Brighton Analytical, L.L.C.

Environment, Great Lakes, and Energy

Report Date: 05/18/2020

Sample ID:

Brighton Analytical LLC

2105 Pless Drive

Brighton, Michigan 48114

Phone: (810)229-7575 (810)229-8650

e-mail:[email protected]

EGLE Certified #9404

NELAC Accredited #176507




BTC-04.CB.DP TMDL

05/15/2020

05/15/2020Sample Date:

Submit Date:

Burger Transition Center TMDLProject Name:

Project Number:

BA Report Number: 65024

Parameters Result Units DL Method Reference

Analysis

Date

BA Sample ID: CM05370 AE200001-GCPS

Analyst

To:

Microbiological Analysis

E. coli 1.0 SM9223B M Well 05/15/2020WTCFU/100 ml115.3

DL=Reported detection limit for analytical method requested. Some compounds require special

analytical methods to achieve EGLE designated target detection limits (TDL).

Released by

Date 5/18/2020

1


Sample ID:


2105 Pless Drive


Phone: (810)229-7575 (810)229-8650







Blank-Dip Cup TMDL

05/15/2020


Submit Date:

Cambridge-Garden City High SchoolProject Name:

Project Number:



Analysis

Date


Analyst

To:


E. coli 1.0 SM9223B M Well 05/15/2020WTCFU/100 ml0



Released by

Date 5/18/2020

1





June 18, 2020 Mr. Neil Greene Director of Operations Garden City Public Schools 33980 Marquette Garden City, Michigan 48135 [email protected] RE: Project # AE200001 GCPS Total Maximum Daily Load (TMDL) Sampling Report Cambridge High School - Garden City High School Complex Dear Mr. Greene: Arch Environmental Group, Inc. recently conducted a round of TMDL Wet Weather Sampling at discharge points GCC-14.MH.DP, GCC-46.MH.DP, GCC-62.MH.DP, and GCC-70.CB.DP at the Cambridge High School - Garden City High School Complex on May 15, 2020, in accordance with the applicable NPDES Permit requirements. TMDL sampling is used to determine the level of specific pollutants in the stormwater system by collecting samples from 50% of the district’s stormwater outfalls/discharge points during a representative wet weather event. The sampling results are then evaluated to determine if a particular point source needs to be addressed to reduce the pollutant load of the receiving waters. A report regarding the findings of this round of TMDL Sampling is attached. If you have questions regarding this report, please feel free to contact please feel free to contact the cleanWATER team at (248) 426-0165. Sincerely, Arch Environmental Group, Inc. Environmental Services

Kellie Das Certified Industrial Site Stormwater Operator, I-16237

mailto:[email protected]

TMDL Sampling Report Page 2 Project # AE200001 GCPS Cambridge High School – Garden City High School Complex

TABLE OF CONTENTS

1.0 Project Summary 2.0 TMDL Sampling Procedures 3.0 TMDL Sampling Results 4.0 Conclusion 5.0 Best Management Practices to Reduce TMDL Pollutant Loads

Attachments: TMDL Screening Inspection Logs Storm Sewer System Site Map Analytical Results & Chain of Custody


1.0 / Project Summary Arch Environmental Group, Inc. (AEG) recently conducted a round of Total Maximum Daily Load (TMDL) Sampling for E. coli at discharge locations GCC-14.MH.DP, GCC-46.MH.DP, GCC-62.MH.DP, and GCC-70.CB.DP at the Cambridge High School - Garden City High School Complex on May 15, 2020, in accordance with the applicable National Pollutant Discharge Elimination System (NPDES) Permit requirements.

A TMDL describes the process used to determine how much of a pollutant a lake or stream can assimilate and sets pollutant reduction targets for that water body. NPDES Municipal Separate Storm Sewer System (MS4) permits require regulated public entities located within urbanized areas that discharge storm water to an MS4 which leads to a water body designated with a TMDL, to demonstrate progress toward meeting Water Quality Standards (WQS). If the TMDL was written for E. coli or Total Phosphorus (TP), the MS4 permits further require permittees to collect representative samples of storm water discharges from their points of discharge to MS4s which lead to the impacted water bodies.1 Based on a review of the sampling results, Stormwater Best Management Practices (BMP) implementation will be reviewed and BMPs may be updated to ensure progress toward achieving TMDL pollutant load reductions.

Monitoring is not required for Biota/Sediment TMDLs under the MS4 permits.2

The receiving water body of the Cambridge High School - Garden City High School Complex is the Middle Rouge River. The Rouge River has been designated with TMDLs of E. coli and Biota/Sediment, and/or Dissolved Oxygen. Further details on the TMDLs listed can be found in the documents “Total Maximum Daily Load for E. coli for the Rouge River” and “Total Maximum Daily Load for Biota for the River Rouge Watershed, Including Bishop and Tonquish Creeks”. Some examples of potential sources of E. coli in waterways include fecal material from livestock, humans, wildlife, waterfowl such as geese, and sanitary systems. Some examples of potential sources of sediment include erosion and construction activities.

2.0 / TMDL Sampling Procedures Applicable TMDL sampling was conducted with guidance from the “Storm Water Sampling Guidance for Total Phosphorus & E. coli.” Sampling was conducted at designated outfalls/discharge points during a rain event of approximately .25 inches or more. Please see the attached TMDL Screening Inspection Log for specific rainfall amounts. Sampling was conducted on May 15, 2020 and the last significant rain event was on May 14, 2020. The weather history for the rain event is available upon request.

When a dip-cup or similar sampling device was needed to collect the sample, a blank sample was collected to ensure no contamination was coming from the sampling device. The blank collected during this round of TMDL sampling came back at zero (0) CFU for E. coli indicating that the sampling device used was not contaminated. The lab results of the blank sample are attached. Furthermore, all sampling devices were decontaminated with bleach water and distilled water between each sampling location according to the protocol laid out in the “Storm Water Sampling Guidance for Total Phosphorus & E. coli.” Each location sampled was analyzed for pH and temperature while on-site and the sampled outfall/discharge point (OF/DP) was inspected for color, odor, and abnormal vegetative growth. The collected samples were delivered to an external laboratory for analysis.


1 Storm Water Sampling Guidance for Total Phosphorus & E. coli. November 24, 2009. DEQ 2 Addressing Biota TMDLs in Municipal Separate Storm Sewer System Permits” April 5, 2010. DNRE


TMDL Benchmark Standards for E. coli:

• E. coli: The WQS for E. coli is the maximum amount of E. coli that is allowable in surface waters of the state. These standards are known as total body contact and partial body contact standards. Total body contact is a more conservative standard used during the summer to protect swimmers during total body contact and has the daily maximum of 300 CFU per 100 milliliters (mL). This applies to the warmer months of May 1st -October 31stand is the standard being used in this report. Partial body contact is the daily maximum of 1,000 CFU per 100 mL and applies to the waterways year-round. 3

Structure ID: GCC-14.MH.DP Structure Type: Manhole Location: S of GCHS, outside Door C5

At the time of the sampling, clear water flow was noted, and GCC-14.MH.DP was free of odors, and abnormal vegetative growth. AEG collected a grab sample from GCC-14.MH.DP and the sample was screened for temperature and pH in the field. An E. coli grab sample was delivered to an external laboratory for analysis. Results from the sampling are summarized below. A more detailed TMDL Screening Inspection Log is also attached at the end of the report.

Parameter: Results: TMDL Benchmark Standard: Units: pH 7.67 6.5 - 9 pH Units Temperature 16.1 N/A Celsius E. coli 1553.1 300 CFU per 100mL Total Phosphorus N/A N/A ug/L

The sample results for GCC-14.MH.DP did not identify elevated levels of pH above the TMDL Benchmark Standards. However, highlighted values in the tables above indicate that for outfall location GCC-14.MH.DP, the reported levels for E. coli (1553.1 CFU) are above the Michigan Public Health Department standards for Total Body Contact (E. coli >300 CFU).

Structure ID: GCC-46.MH.DP Structure Type: Manhole Location: NE of Cambridge HS, just N of parking lot in grass between sidewalk and lot






Structure ID: GCC-62.MH.DP Structure Type: Manhole Location: SW corner of school in grass by bus loop




Structure ID: GCC-70.CB.DP Structure Type: Catch Basin Location: SE corner of GCHS, just E of drive in grass

At the time of the sampling, clear water flow was noted, and GCC-70.CB.DP was free of odors, and abnormal vegetative growth. AEG collected a grab sample from GCC-70.CB.DP and the sample was screened for temperature and pH in the field. An E. coli grab sample was delivered to an external laboratory for analysis. Results from the sampling are summarized below. A more detailed TMDL Screening Inspection Log is also attached at the end of the report.


The sample results for GCC-70.CB.DP did not identify elevated levels of pH above the TMDL Benchmark Standards. However, highlighted values in the tables above indicate that for outfall location GCC-70.CB.DP, the reported levels for E. coli (1986.3 CFU) are above the Michigan Public Health Department standards for Total Body Contact (E. coli >300 CFU).


4.0 / Conclusion AEG did not identify any elevated levels of pH above the TMDL Benchmark Standards for discharge locations GCC-14.MH.DP, GCC-46.MH.DP, GCC-62.MH.DP, and GCC-70.CB.DP sampled at the Cambridge High School - Garden City High School Complex on May 15, 2020. However, AEG did identify elevated levels of E. coli above the TMDL Benchmark Standards for discharge locations GCC-14.MH.DP, GCC-46.MH.DP, GCC-62.MH.DP, and GCC-70.CB.DP.

Arch Environmental Group, Inc. recommends that the elevated locations GCC-14.MH.DP, GCC-46.MH.DP, GCC-62.MH.DP, and GCC-70.CB.DP be re-assessed each permit cycle (two rounds of sampling occur per permit cycle) to ascertain whether greater or reduced potential for E. coli TMDL contribution has occurred. Additionally, these sites will be monitored annually during regularly scheduled Routine Storm sewer Structural Inspections for changes in conditions or site activities.

Geese, gulls and ducks are speculated to be a major bacterial source in urban areas, particularly where large populations congregate. E. coli (Escherichia Coli) is a sub-group of the fecal coliform group and can be used as an indicator of fecal contamination. E. coli bacteria exist in animal and human fecal matter.4 Elevated levels of E. coli typically occur at sites which have leaking sanitary sewer systems, failed septic systems, or populations of wild or domesticated animals. E. coli originating from birds, raccoons and other wildlife may be present in large numbers in stormwater runoff. In an effort to determine the cause of the benchmark exceedance of E. coli, Arch Environmental Group reviewed the layout of the school storm water system as well as past tracer dye studies. Based on this investigation, sanitary sewer contamination from Cambridge High School - Garden City High School Complex is not suspected. The source is likely natural sources, such as the presence of wild animals in the various open fields on the property.

5.0 / Best Management Practices to Reduce TMDL Pollutant Loads The Garden City Public Schools’ Stormwater Management Plan (SWMP) identifies and defines the districts BMPs to comply with the Six Minimum Measures that are the front line in the nationwide effort to reducing polluted stormwater discharges to our lake, rivers and streams. The Michigan Department of Environment, Great Lakes, and Energy recognizes that having a Stormwater Management Plan in place built around the Six Minimum Measures specified in the NPDES General Jurisdictional Permit have the potential to significantly contribute to the reduction of TMDL Pollutants in the surface waters of the state. A link to the district’s current SWMP can be found on the district’s website at http://cms.revize.com/revize/gardencityschools/document_center/StudentServices/GCPS%20SWMP%202016%20V2%20Revised%207-19-18.pdf .The Six Minimum Measures are listed below:

• Public Education and Outreach Program (PEP) • Public Involvement and Participation Program (PIP) • Illicit Discharge Elimination Program (IDEP) • Post Construction Stormwater Management Program • Construction Site Stormwater Runoff Control Program • Pollution Prevention/Good Housekeeping Program.

4 Sources of E. coli In Surface Water” - Great Lakes Water Institute, University of Wisconsin, Milwaukee http://www.glwi.uwm.edu/research/genomics/ecoli/sources_of_ecoli_in_water.php

http://cms.revize.com/revize/gardencityschools/document_center/StudentServices/GCPS%20SWMP%202016%20V2%20Revised%207-19-18.pdf


http://www.glwi.uwm.edu/research/genomics/ecoli/sources_of_ecoli_in_water.php


The following is a list of prioritized TMDL best management practices from the districts SWMP that Garden City Public Schools should continue to implement in order to improve water quality impairments associated with the E. coli and Biota/Sediment TMDL of the Rouge River. Prioritization of BMPs is based on Garden City Public Schools targeted TMDL pollutants. Priority is given to BMPs that reduce E. coli loads and address water quality for biota.

E. COLI 1. GCPS will use its website to provide the public with information regarding pet waste (SEMCOG links).

Additionally, SEMCOG pet waste posters are placed at various school buildings. 2. GCPS will prohibit illicit discharges, inspect and monitor suspected illicit discharges, and enforce

elimination of the illicit discharges and connections. 3. GCPS has reviewed all facilities for cross-connections between the sanitary and storm sewer systems. 4. GCPS will conduct bimonthly inspections of parking lot and curb areas and hand clean as needed. 5. GCPS has established programs for soil erosion and sediment control from new or redevelopment

construction. Such developments require permits and inspections for practices to keep exposed soils on site or controlled from runoff.

6. GCPS has implemented routine visual inspections of stormwater structural controls. 7. GCPS will remove excessive sediments from structural sediment removal systems to maintain the

maximum designed performance. Sediments will be disposed of offsite in accordance with Parts 115 or 121.




3. The district passed a post-construction stormwater board resolution to require implementation of the stormwater standards for construction.



GCPS strives to be good stewards of the land within their jurisdiction and to use appropriate Best Management Practices (BMPs) to contribute to the improvement of water quality. GCPS is committed to practicing sound stormwater management practices; including observance and adherence to all local, state, and federal stormwater statutes, rules, and regulations. Attachments: TMDL Screening Inspection Logs Storm Sewer System Site Map Analytical Results & Chain of Custody cc: AE200001 project file


ID Number: Long:Type:Outfall Dimensions


Sample ID And Information Lab Analysis: Results: TMDL Threshold: Units: Photo ID:7.67 6.5 - 9 pH units16.1 N/A Celsius

1553.1 300 CFU per 100mLN/A N/A ug/L

Building:Samplers:

Garden City-Cambridge High School ComplexSteven RipleyKellie Das

Structure Type Manhole

South of GCHS, outside door C5

42.200502 83.194385

Location:

Yes, ContinousRoof and field drainsSlow

Lat:

Garden City Public Schools5/15/2020

TMDL Sampling

Client:Date

Inspection Type:

Standing Water CharacteristicsStanding Water:

ClearNo

Flow Odor

Velocity of Flow:


Observations:12”Discharge PointGCC-14.MH.DP

NoNoNoNoNo

Abnormal Growth:

Sewage:Oil Sheen:

No

Algae:Bacterial Sheen:


Sample sent to Lab:

Total Rainfall (Inches): .77

Sample ID:Temperature: pH:

E. coli:Total Phosphorus:Other:Other:Other:

Time Collected:

Current Weather:Last Rain Event:


NoStaining:

Suds:Odor:Color:

ClearNo

Yes

No

Flow Observed:Source of Flow:

Color of Flow:


GCC-14.MH.DP TMDL 9:30 AM< 48 HoursPartly CloudyManhole

Yes

Slimes:

Arch Environmental Group37720 Interchange Drive, Farmington Hills MI 48370

Phone: (248) 426-0135Fax: (248) 426-0136







Sample ID: GCC-46.MH.DP TMDL pH:Time Collected: 9:50 AM Temperature: Last Rain Event: < 48 Hours E. coli:

Current Weather: Partly Cloudy Total Phosphorus:Sample Location Type: Manhole Other:Total Rainfall (Inches) .77 Other:

Other:UnlikelyOutfall Characterization:

Flow Odor NoOil Sheen:

Staining:Suds:

Sewage: Additional Comments:Bacterial Sheen: No

Algae: NoSlimes: No

Abnormal Growth: Yes

Lat: 42.201127 83.193738Northeast of Cambridge HS, just north of parking lot in grass between sidewalk and lot

Observations:Standing Water Characteristics

Color of Flow: ClearOdor:

Standing Water: Yes Yes, Continous

Discharge Point

Downstream basins

NoNo

Clear Source of Flow:NoNoNo

Flow Observed:

12”

Velocity of Flow: Slow

Structure Information:GCC-46.MH.DP Structure Type

Color:

Location:

Building: Garden City-Cambridge High School Complex

Manhole

Inspectors: Kellie Das Steven RipleyClient:

Sample sent to Lab: Yes

Garden City Public SchoolsDate 5/15/2020

Inspection Type: TMDL Sampling


Phone: (248) 426-0135Fax: (248) 426-0136







Oil Sheen: NoSewage: No Additional Comments:

Bacterial Sheen: NoAlgae: No

Slimes: NoAbnormal Growth: No

9:00 AM Temperature: Last Rain Event: < 48 Hours E. coli:

Current Weather: Partly Cloudy Total Phosphorus:Sample Location Type: Manhole Other:Total Rainfall (Inches):

Odor: No Velocity of Flow: SlowSuds: No Color of Flow: Clear

Staining: No Flow Odor No

Color: Clear Source of Flow: Downstream basins

Discharge Point Location: Southwest corner of school in grass by bus loop18”


Standing Water: Yes Flow Observed: Yes, Continous

Building: Garden City-Cambridge High School ComplexInspectors: Kellie Das Steven Ripley

Structure Information:GCC-62.MH.DP Structure Type Manhole Lat: 42.195918 83.194978

Outfall Characterization:


Sample ID: GCC-62.MH.DP TMDL pH:Time Collected:

.77 Other:Other:

Unlikely

Client: Garden City Public SchoolsDate 5/15/2020



Phone: (248) 426-0135Fax: (248) 426-0136







Sample ID: GCC-70.CB.DP TMDL pH:Time Collected: 9:20 AM Temperature: Last Rain Event: < 48 Hours E. coli:

Current Weather: Partly Cloudy Total Phosphorus:Sample Location Type: Catch Basin Other:Total Rainfall (Inches): .77 Other:

Other:Unlikely

Staining: No Flow Odor NoOil Sheen: No

Sewage: No Additional Comments:Bacterial Sheen: No

Algae: NoSlimes: No

Abnormal Growth: No

Color: Clear Source of Flow: Downstream basins Odor: No Velocity of Flow: SlowSuds: No Color of Flow: Clear

Catch Basin Lat: 42.200201 83.194424Discharge Point Location: Southeast corner of GCHS, just east of drive in grass12”


Standing Water: Yes Flow Observed: Yes, Continous

Building: Garden City-Cambridge High School ComplexInspectors: Kellie Das Steven Ripley



5/15/2020Inspection Type: TMDL Sampling

Date

Structure Information:GCC-70.CB.DP Structure Type

Client: Garden City Public Schools


Phone: (248) 426-0135Fax: (248) 426-0136



TM

May 18, 2020




Subject: Cambridge-Garden City High School

AE200001-GCPS

Dear Ms. Sendra :












Sincerely,




Sample ID:


2105 Pless Drive


Phone: (810)229-7575 (810)229-8650







GCC-62.MH.DP TMDL

05/15/2020


Submit Date:


Project Number:



Analysis

Date


Analyst

To:





Released by

Date 5/18/2020

1


Sample ID:


2105 Pless Drive


Phone: (810)229-7575 (810)229-8650







GCC-70.CB.DP TMDL

05/15/2020


Submit Date:


Project Number:



Analysis

Date


Analyst

To:





Released by

Date 5/18/2020

1


Sample ID:


2105 Pless Drive


Phone: (810)229-7575 (810)229-8650







GCC-14.MH.DP TMDL

05/15/2020


Submit Date:


Project Number:



Analysis

Date


Analyst

To:





Released by

Date 5/18/2020

1


Sample ID:


2105 Pless Drive


Phone: (810)229-7575 (810)229-8650







GCC-46.MH.DP TMDL

05/15/2020


Submit Date:


Project Number:



Analysis

Date


Analyst

To:





Released by

Date 5/18/2020

1


Sample ID:


2105 Pless Drive


Phone: (810)229-7575 (810)229-8650







Blank-Dip Cup TMDL

05/15/2020


Submit Date:


Project Number:



Analysis

Date


Analyst

To:





Released by

Date 5/18/2020

1





June 14, 2020 Mr. Neil Greene Director of Operations Garden City Public Schools 33980 Marquette Garden City, Michigan 48135 [email protected] RE: Project # AE200001 GCPS Total Maximum Daily Load (TMDL) Sampling Report Douglas 3-4 Campus Dear Mr. Greene: Arch Environmental Group, Inc. recently conducted a round of TMDL Wet Weather Sampling at discharge points DGS-01.CB.DP, DGS-09.CB.DP, and DGS-19.CB.DP at the Douglas 3-4 Campus on May 15, 2020, in accordance with the applicable NPDES Permit requirements. TMDL sampling is used to determine the level of specific pollutants in the stormwater system by collecting samples from 50% of the district’s stormwater outfalls/discharge points during a representative wet weather event. The sampling results are then evaluated to determine if a particular point source needs to be addressed to reduce the pollutant load of the receiving waters. A report regarding the findings of this round of TMDL Sampling is attached. If you have questions regarding this report, please feel free to contact please feel free to contact the cleanWATER team at (248) 426-0165. Sincerely, Arch Environmental Group, Inc. Environmental Services



TMDL Sampling Report Page 2 Project # AE200001 GCPS Douglas 3-4 Campus

TABLE OF CONTENTS




1.0 / Project Summary Arch Environmental Group, Inc. (AEG) recently conducted a round of Total Maximum Daily Load (TMDL) Sampling for E. coli at discharge location DGS-01.CB.DP, DGS-09.CB.DP, and DGS-19.CB.DP at the Douglas 3-4 Campus on May 15, 2020, in accordance with the applicable National Pollutant Discharge Elimination System (NPDES) Permit requirements.



The receiving water body of the Douglas 3-4 Campus is the Middle Rouge River. The Rouge River has been designated with TMDLs of E. coli and Biota/Sediment, and/or Dissolved Oxygen. Further details on the TMDLs listed can be found in the documents “Total Maximum Daily Load for E. coli for the Rouge River” and “Total Maximum Daily Load for Biota for the River Rouge Watershed, Including Bishop and Tonquish Creeks”. Some examples of potential sources of E. coli in waterways include fecal material from livestock, humans, wildlife, waterfowl such as geese, and sanitary systems. Some examples of potential sources of sediment include erosion and construction activities.








Structure ID: DGS-01.CB.DP Structure Type: Catch Basin Location: SW side of S parking lot, middle of lot

At the time of the sampling, clear water flow was noted, and DGS-01.CB.DP was free of odors, and abnormal vegetative growth. AEG collected a grab sample from DGS-01.CB.DP and the sample was screened for temperature and pH in the field. An E. coli was delivered to an external laboratory for analysis. Results from the sampling are summarized below. A more detailed TMDL Screening Inspection Log is also attached at the end of the report.


The sample results for DGS-01.CB.DP did not identify elevated levels of pH or E. coli above the TMDL Benchmark Standards. The reported levels for E. coli (2.1 CFU) are below the Michigan Public Health Department standards for Total Body Contact (E. coli >300 CFU).

Structure ID: DGS-09.CB.DP Structure Type: Catch Basin Location: NE corner of building in grass






Structure ID: DGS-19.CB.DP Structure Type: Catch Basin Location: NW corner of S parking lot near entry/exit drive




4.0 / Conclusion AEG did not identify any elevated levels of pH or E. coli above the TMDL Benchmark Standards for discharge locations DGS-01.CB.DP, DGS-09.CB.DP, and DGS-19.CB.DP sampled at the Douglas 3-4 Campus on May 15, 2020.

It is the opinion of Arch Environmental Group, Inc. that the TMDL sampling results indicate good use of BMPs in maintaining TMDL pollutant load reductions at the Douglas 3-4 Campus. A list of those BMPs is provided below in section 5.0. TMDL sampling will be conducted twice per permit cycle to continue to monitor for TMDL pollutant load levels in accordance with the NPDES Permit requirements.

5.0 / Best Management Practices to Reduce TMDL Pollutant Loads The Garden City Public Schools’ Stormwater Management Plan (SWMP) identifies and defines the districts BMPs to comply with the Six Minimum Measures that are the front line in the nationwide effort to reducing polluted stormwater discharges to our lake, rivers and streams. The Michigan Department of Environment, Great Lakes, and Energy recognizes that having a Stormwater Management Plan in place built around the Six Minimum Measures specified in the NPDES General Jurisdictional Permit have the potential to significantly contribute to the reduction of TMDL Pollutants in the surface waters of the state. A link to the district’s current SWMP can be found on the district’s website at http://cms.revize.com/revize/gardencityschools/document_center/StudentServices/GCPS%20SWMP%202016%20V2%20Revised%207-19-18.pdf. The Six Minimum Measures are listed below:

• Public Education and Outreach Program (PEP)




• Public Involvement and Participation Program (PIP) • Illicit Discharge Elimination Program (IDEP) • Post Construction Stormwater Management Program • Construction Site Stormwater Runoff Control Program • Pollution Prevention/Good Housekeeping Program.














GCPS strives to be good stewards of the land within their jurisdiction and to use appropriate Best Management Practices (BMPs) to contribute to the improvement of water quality. GCPS is committed to practicing sound stormwater management practices; including observance and adherence to all local, state, and federal stormwater statutes, rules, and regulations. Attachments: TMDL Screening Inspection Logs Storm Sewer System Site Map Analytical Results & Chain of Custody


cc: AE200001 project file




Sample ID And Information Lab Analysis: Results: TMDL Threshold: Units: Photo ID:8.8 6.5 - 9 pH units

16.8 N/A Celsius2.1 300 CFU per 100mL

N/A N/A ug/L

Building:Samplers:

Douglas 3-4 CampusSteven RipleyKellie Das


Southwest side of south parking lot, middle of lot

42.190062 83.192594

Location:

Yes, ContinousDownstream basins Trickle

Lat:


TMDL Sampling

Client:Date

Inspection Type:


ClearNo

Flow Odor

Velocity of Flow:


Observations:24”Discharge PointDGS-01.CB.DP

NoNoNoNoNo

Abnormal Growth:

Sewage:Oil Sheen:

No



Sample sent to Lab:




Time Collected:



NoStaining:

Suds:Odor:Color:

ClearNo

Yes

No


Color of Flow:


DGS-01.CB.DP TMDL 10:30 AM< 48 HoursPartly CloudyCatch Basin

Yes

Slimes:


Phone: (248) 426-0135Fax: (248) 426-0136







N/A N/A ug/L

Sample ID: DGS-09.CB.DP TMDL pH:Time Collected: 10:45 Temperature: Last Rain Event: < 48 Hours E. coli:

Current Weather: Partly Cloudy Total Phosphorus:Sample Location Type: Catch Basin Other:Total Rainfall (Inches) .77 Other:



Staining:Suds:

Sewage: Additional Comments:Bacterial Sheen: No

Algae: NoSlimes: No

Abnormal Growth: No

Lat: 42.200442 83.192198Northeast corner of building in grass



Standing Water: Yes Yes, Trickle

Discharge Point

Downstream basins

NoNo


Flow Observed:

8”

Velocity of Flow: Trickle

Structure Information:DGS-09.CB.DP Structure Type

Color:

Location:

Building: Douglas 3-4 Campus

Catch Basin






Phone: (248) 426-0135Fax: (248) 426-0136







Oil Sheen: NoSewage: No Additional Comments:

Bacterial Sheen: NoAlgae: No

Slimes: NoAbnormal Growth: No

10:35 AM Temperature: Last Rain Event: < 48 Hours E. coli:

Current Weather: Partly Cloudy Total Phosphorus:Sample Location Type: Catch Basin Other:Total Rainfall (Inches):

Odor: No Velocity of Flow: TrickleSuds: No Color of Flow: Clear

Staining: No Flow Odor No

Color: Clear Source of Flow: Downstream basins

Discharge Point Location: Northwest corner of south parking lot near entry/exit drive24”


Standing Water: Yes Flow Observed: Yes, Trickle

Building: Douglas 3-4 CampusInspectors: Kellie Das Steven Ripley

Structure Information:DGS-19.CB.DP Structure Type Catch Basin Lat: 42.190062 83.192594



Sample ID: DGS-19.CB.DP TMDL pH:Time Collected:

.77 Other:Other:

Unlikely

Client: Garden City Public SchoolsDate 5/15/2020



Phone: (248) 426-0135Fax: (248) 426-0136



TM

May 18, 2020




Subject: Douglas 3-4 School TMDL

AE200001-GCPS

Dear Ms. Sendra :












Sincerely,




Sample ID:


2105 Pless Drive


Phone: (810)229-7575 (810)229-8650







DGS-01.CB.DP TMDL

05/15/2020


Submit Date:

Douglas 3-4 School TMDLProject Name:

Project Number:



Analysis

Date


Analyst

To:





Released by

Date 5/18/2020

1


Sample ID:


2105 Pless Drive


Phone: (810)229-7575 (810)229-8650







DGS-19.CB.DP TMDL

05/15/2020


Submit Date:


Project Number:



Analysis

Date


Analyst

To:





Released by

Date 5/18/2020

1


Sample ID:


2105 Pless Drive


Phone: (810)229-7575 (810)229-8650







DGS-09.CB.DP TMDL

05/15/2020


Submit Date:


Project Number:



Analysis

Date


Analyst

To:





Released by

Date 5/18/2020

1


Sample ID:


2105 Pless Drive


Phone: (810)229-7575 (810)229-8650







Blank-Dip Cup TMDL

05/15/2020


Submit Date:


Project Number:



Analysis

Date


Analyst

To:





Released by

Date 5/18/2020

1





June 17, 2020 Mr. Neil Greene Director of Operations Garden City Public Schools 33980 Marquette Garden City, Michigan 48135 [email protected] RE: Project # AE200001 GCPS Total Maximum Daily Load (TMDL) Sampling Report Farmington 5-6 Campus Dear Mr. Greene: Arch Environmental Group, Inc. recently conducted a round of TMDL Wet Weather Sampling at discharge point FRM-18.MH.DP at Farmington 5-6 Campus on May 15, 2020, in accordance with the applicable NPDES Permit requirements. TMDL sampling is used to determine the level of specific pollutants in the stormwater system by collecting samples from 50% of the district’s stormwater outfalls/discharge points during a representative wet weather event. The sampling results are then evaluated to determine if a particular point source needs to be addressed to reduce the pollutant load of the receiving waters. A report regarding the findings of this round of TMDL Sampling is attached. If you have questions regarding this report, please feel free to contact please feel free to contact the cleanWATER team at (248) 426-0165. Sincerely, Arch Environmental Group, Inc. Environmental Services



TMDL Sampling Report Page 2 Project # AE200001 GCPS Farmington 5-6 Campus

TABLE OF CONTENTS


Attachments: TMDL Screening Inspection Log Storm Sewer System Site Map Analytical Results & Chain of Custody


1.0 / Project Summary Arch Environmental Group, Inc. (AEG) recently conducted a round of Total Maximum Daily Load (TMDL) Sampling for E. coli at discharge location FRM-18.MH.DP at Farmington 5-6 Campus on May 15, 2020, in accordance with the applicable National Pollutant Discharge Elimination System (NPDES) Permit requirements.



The receiving water body of Farmington 5-6 Campus is the Perrin Drain of the Rouge River. The Rouge River has been designated with TMDLs of E. coli and Biota/Sediment, and/or Dissolved Oxygen. Further details on the TMDLs listed can be found in the documents “Total Maximum Daily Load for E. coli for the Rouge River” and “Total Maximum Daily Load for Biota for the River Rouge Watershed, Including Bishop and Tonquish Creeks”. Some examples of potential sources of E. coli in waterways include fecal material from livestock, humans, wildlife, waterfowl such as geese, and sanitary systems. Some examples of potential sources of sediment include erosion and construction activities.

2.0 / TMDL Sampling Procedures Applicable TMDL sampling was conducted with guidance from the “Storm Water Sampling Guidance for Total Phosphorus & E. coli.” Sampling was conducted at designated outfalls/discharge points after a dry period of approximately 72 hours and during a rain event of approximately .25 inches or more. Please see the attached TMDL Screening Inspection Log for specific rainfall amounts. Sampling was conducted on May 15, 2020 and the last significant rain event was on May 14, 2020. The weather history for the rain event is available upon request.







Structure ID: FRM-18.MH.DP Structure Type: Manhole Location: NE corner of building, northernmost basin in drop off drive

At the time of the sampling, clear water flow was noted, and FRM-18.MH.DP was free of odors, and abnormal vegetative growth. AEG collected a grab sample from FRM-18.MH.DP and the sample was screened for temperature and pH in the field. An E. coli grab sample was delivered to an external laboratory for analysis. Results from the sampling are summarized below. A more detailed TMDL Screening Inspection Log is also attached at the end of the report.

Parameter: Results: TMDL Benchmark Standard: Units: pH 8.11 6.5 - 9 pH Units Temperature 16.9 N/A Celsius E. coli 2419 300 CFU per 100mL Total Phosphorus N/A N/A ug/L

The sample results for FRM-18.MH.DP did not identify elevated levels of pH above the TMDL Benchmark Standards. However, highlighted values in the tables above indicate that for outfall location FRM-18.MH.DP, the reported levels for E. coli (2419 CFU) are above the Michigan Public Health Department standards for Total Body Contact (E. coli >300 CFU).

4.0 / Conclusion AEG did not identify any elevated levels of pH above the TMDL Benchmark Standards for discharge location FRM-18.MH.DP sampled at Farmington 5-6 Campus on May 15, 2020. However, AEG did identify elevated levels of E. coli above the TMDL Benchmark Standards for discharge location FRM-18.MH.DP

Arch Environmental Group, Inc. recommends that the elevated location FRM-18.MH.DP be re-assessed each permit cycle (two rounds of sampling occur per permit cycle) to ascertain whether greater or reduced potential for E. coli TMDL contribution has occurred. Additionally, these sites will be monitored annually during regularly scheduled Routine Storm sewer Structural Inspections for changes in conditions or site activities.

Geese, gulls and ducks are speculated to be a major bacterial source in urban areas, particularly where large populations congregate. E. coli (Escherichia Coli) is a sub-group of the fecal coliform group and can be used as an



indicator of fecal contamination. E. coli bacteria exist in animal and human fecal matter.4 Elevated levels of E. coli typically occur at sites which have leaking sanitary sewer systems, failed septic systems, or populations of wild or domesticated animals. E. coli originating from birds, raccoons and other wildlife may be present in large numbers in stormwater runoff. In an effort to determine the cause of the benchmark exceedance of E. coli, Arch Environmental Group reviewed the layout of the school storm water system as well as past tracer dye studies. Based on this investigation, sanitary sewer contamination from Farmington 5-6 Campus is not suspected. The source is likely natural sources, such as the presence of wild animals from the open fields and parking lots. There is less traffic through the parking lot now that school is closed, allowing animals to move freely throughout the property.






elimination of the illicit discharges and connections. 3. GCPS has reviewed all facilities for cross-connections between the sanitary and storm sewer systems. 4. GCPS will conduct bimonthly inspections of parking lot and curb areas and hand clean as needed.






5. GCPS has established programs for soil erosion and sediment control from new or redevelopment construction. Such developments require permits and inspections for practices to keep exposed soils on site or controlled from runoff.









GCPS strives to be good stewards of the land within their jurisdiction and to use appropriate Best Management Practices (BMPs) to contribute to the improvement of water quality. GCPS is committed to practicing sound stormwater management practices; including observance and adherence to all local, state, and federal stormwater statutes, rules, and regulations.

Attachments: TMDL Screening Inspection Log Storm Sewer System Site Map Analytical Results & Chain of Custody cc: AE200001 project file





2419 300 CFU per 100mLN/A N/A ug/L

Building:Samplers:

Farmington 5-6 CampusSteven RipleyKellie Das


Northeast corner of building, northern most basin in dropoff drive

42.19141 83.221016

Location:

Yes, ContinousDownstream basins and roof drains Moderate

Lat:


TMDL Sampling

Client:Date

Inspection Type:


ClearNo

Flow Odor

Velocity of Flow:


Observations:36”Discharge PointFRM-18.MH.DP

NoNoNoNoNo

Abnormal Growth:

Sewage:Oil Sheen:

No



Sample sent to Lab:




Time Collected:



NoStaining:

Suds:Odor:Color:

ClearNo

Yes

No


Color of Flow:


FRM-18.MH.DP TMDL 2:15 PM< 48 HoursRainManhole

Yes

Slimes:


Phone: (248) 426-0135Fax: (248) 426-0136



TM

May 18, 2020




Subject: Farmington 5-6 Campus TMDL

AE200001-GCPS

Dear Ms. Sendra :












Sincerely,




Sample ID:


2105 Pless Drive


Phone: (810)229-7575 (810)229-8650







FRM-18.MH.DP TMDL

05/15/2020


Submit Date:

Farmington 5-6 Campus TMDLProject Name:

Project Number:



Analysis

Date


Analyst

To:


E. coli 1.0 SM9223B M Well 05/15/2020WTCFU/100 ml>2419



Released by

Date 5/18/2020

1


Sample ID:


2105 Pless Drive


Phone: (810)229-7575 (810)229-8650







Blank-Dip Cup TMDL

05/15/2020


Submit Date:


Project Number:



Analysis

Date


Analyst

To:





Released by

Date 5/18/2020

1





September 30, 2020 Mr. Neil Greene Director of Operations Garden City Public Schools 33980 Marquette Garden City, Michigan 48135 [email protected] RE: Project # AE200001 GCPS Total Maximum Daily Load (TMDL) Sampling Report Garden City Middle School Dear Mr. Greene: Arch Environmental Group, Inc. recently conducted a round of TMDL Wet Weather Sampling at discharge points GCM-24.MH.DP and GCM-28.CB (Upstream of GCM-27.CB.DP) at Garden City Middle School on September 8, 2020, in accordance with the applicable NPDES Permit requirements. TMDL sampling is used to determine the level of specific pollutants in the stormwater system by collecting samples from 50% of the district’s stormwater outfalls/discharge points during a representative wet weather event. The sampling results are then evaluated to determine if a particular point source needs to be addressed to reduce the pollutant load of the receiving waters. A report regarding the findings of this round of TMDL Sampling is attached. If you have questions regarding this report, please feel free to contact please feel free to contact the cleanWATER team at (248) 426-0165. Sincerely, Arch Environmental Group, Inc. Environmental Services

Brendan Koziol Consultant


TMDL Sampling Report Page 2 Project # AE200001 GCPS Garden City Middle School

TABLE OF CONTENTS

1.0 Project Summary 2.0 TMDL Sampling Procedures 3.0 TMDL Sampling Results 4.0 Conclusion/Recommendations 5.0 Best Management Practices to Reduce TMDL Pollutant Loads



1.0 / Project Summary Arch Environmental Group, Inc. (AEG) recently conducted a round of Total Maximum Daily Load (TMDL) Sampling for E. coli at discharge locations GCM-24.MH.DP and GCM-28.CB at Garden City Middle School on September 8, 2020, in accordance with the applicable National Pollutant Discharge Elimination System (NPDES) Permit requirements.



The receiving water body of Garden City Middle School is the Middle Rouge River which drains directly into the Rouge River. The Rouge River has been designated with a TMDL of E. coli and Biota/Sediment. Further details on the TMDLs listed can be found in the documents “Total Maximum Daily Load for Biota for the River Rouge Watershed, Including Bishop and Tonquish Creeks, Washtenaw, Wayne, and Oakland Counties” and “Total Maximum Daily Load for E. coli for the Rouge River”. Some examples of potential sources of E. coli in waterways include fecal material from livestock, humans, wildlife, waterfowl such as geese, and sanitary systems. Some examples of potential sources of sediment include erosion and construction activities.

2.0 / TMDL Sampling Procedures Applicable TMDL sampling was conducted with guidance from the “Storm Water Sampling Guidance for Total Phosphorus & E. coli.” Sampling was conducted at designated outfalls/discharge points after a dry period of approximately 72 hours and during a rain event of approximately .25 inches or more. Please see the attached TMDL Screening Inspection Logs for specific rainfall amounts. Sampling was conducted on September 8, 2020 and the last significant rain event was on September 2, 2020. The weather history for the rain event is available upon request.

Anytime that a sampling occurs, a blank sample is also collected to ensure there has been no contamination from the sampling device or sampling process. The blank collected during this round of TMDL sampling came back at zero (0) CFU for E. coli indicating that no contamination occurred. The lab results of the blank sample are attached. Furthermore, all sampling devices were decontaminated with bleach water and distilled water between each sampling location according to the protocol laid out in the “Storm Water Sampling Guidance for Total Phosphorus & E. coli.” Each location sampled was analyzed for pH and temperature while on-site and the sampled outfall/discharge point (OF/DP) was inspected for color, odor, and abnormal vegetative growth. The collected samples were delivered to an external laboratory for analysis.






Structure ID: GCM-24.MH.DP Structure Type: Manhole Location: North of building, north parking lot, along north edge of parking lot.

At the time of the sampling, clear water flow was noted, and GCM-24.MH.DP was free of odors, and abnormal vegetative growth. AEG collected a grab sample from GCM-24.MH.DP and the sample was screened for temperature and pH in the field. An E. coli grab sample was delivered to an external laboratory for analysis. Results from the sampling are summarized below. A more detailed TMDL Screening Inspection Log is also attached at the end of the report.


The sample results for GCM-24.MH.DP did not identify elevated levels of pH or E. coli above the TMDL Benchmark Standards. The reported levels for E. coli (290.9 CFU) are below the Michigan Public Health Department standards for Total Body Contact (E. coli >300 CFU).

Structure ID: GCM-28.CB Structure Type: Catch Basin Location: East of door D1 on east bus drive.

At the time of the sampling, clear water flow was noted, and GCM-28.CB was free of odors, and abnormal vegetative growth. AEG collected a grab sample from GCM-28.CB and the sample was screened for temperature and pH in the field. An E. coli grab sample was delivered to an external laboratory for analysis. Results from the sampling are summarized below. A more detailed TMDL Screening Inspection Log is also attached at the end of the report.




The sample results for GCM-28.CB did not identify elevated levels of pH or E. coli above the TMDL Benchmark Standards. The reported levels for E. coli (109.1 CFU) are below the Michigan Public Health Department standards for Total Body Contact (E. coli >300 CFU).

4.0 / Conclusion/Recommendations AEG did not identify any elevated levels of pH or E. coli above the TMDL Benchmark Standards for discharge locations GCM-24.MH.DP and GCM-28.CB sampled at Garden City Middle School on September 8, 2020.

It is the opinion of Arch Environmental Group, Inc. that the TMDL sampling results indicate good use of BMPs in maintaining TMDL pollutant load reductions at Garden City Middle School. A list of those BMPs is provided below in section 5.0. TMDL sampling will be conducted twice per permit cycle to continue to monitor for TMDL pollutant load levels in accordance with the NPDES Permit requirements.

5.0 / Best Management Practices to Reduce TMDL Pollutant Loads The GCPS Stormwater Management Plan (SWMP) identifies and defines the districts BMPs to comply with the Six Minimum Measures that are the front line in the nationwide effort to reducing polluted stormwater discharges to our lake, rivers, and streams. The Michigan Department of Environment, Great Lakes, and Energy recognizes that having a Stormwater Management Plan in place built around the Six Minimum Measures specified in the NPDES General Jurisdictional Permit have the potential to significantly contribute to the reduction of TMDL Pollutants in the surface waters of the state. A link to the districts, current SWMP can be found on the district’s website at http://cms.revize.com/revize/gardencityschools/document_center/StudentServices/GCPS%20SWMP%202016%20V2%20Revised%207-19-18.pdf. The Six Minimum Measures are listed below:


The following is a list of prioritized TMDL best management practices from the districts SWMP that GCPS should continue to implement in order to improve water quality impairments associated with the E. coli and Biota/Sediment TMDL of the Rouge River. Prioritization of BMPs is based on GCPS targeted TMDL pollutants. Priority is given to BMPs that reduce E. coli loads and address water quality for biota.

E. COLI

1. GCPS will use its website to provide the public with information regarding pet waste (SEMCOG links). Additionally, SEMCOG pet waste posters are placed at various school buildings.

2. GCPS will prohibit illicit discharges, inspect and monitor suspected illicit discharges, and enforce elimination of the illicit discharges and connections.

3. GCPS has reviewed all facilities for cross-connections between the sanitary and storm sewer systems.

4. GCPS will conduct bimonthly inspections of parking lot and curb areas and hand clean as needed.




5. GCPS has established programs for soil erosion and sediment control from new or redevelopment construction. Such developments require permits and inspections for practices to keep exposed soils on site or controlled from runoff.

6. GCPS has implemented routine visual inspections of stormwater structural controls.

7. GCPS will remove excessive sediments from structural sediment removal systems to maintain the maximum designed performance. Sediments will be disposed of offsite in accordance with Parts 115 or 121.

ALL TMDLs

1. GCPS will continue to use its website to provide the public information regarding local TMDL issues (E. coli and biota TMDL Best Management Practice).

2. GCPS will continue to educate staff, faculty, and students using various venues including the “Seven Simple Steps to Clean Water” program educational materials developed by the various watershed groups specifically related to these issues on the stormwater management webpage.


4. Adequately maintains vegetation around stormwater facilities, ditches, and ponds.

5. Provide training to applicable staff and confirm training from contractors including restrictions on the use of phosphorous containing fertilizers, soaps, cleaners and other chemicals that could impact the separate storm drain system.

GCPS strives to be good stewards of the land within their jurisdiction and to use appropriate Best Management Practices (BMPs) to contribute to the improvement of water quality. GCPS is committed to practicing sound stormwater management practices, including observance and adherence to all local, state, and federal stormwater statutes, rules, and regulations.

Attachments: TMDL Screening Inspection Logs Storm Sewer System Site Map Analytical Results & Chain of Custody cc: AE200001 project file






Building:Samplers:

Garden City Middle SchoolBrendan KoziolKellie Das

Evan Gist


North of building, north parking lot, along north edge of parking lot.

42.323748 -83.375884

Location:

Yes, ContinousRain Substantial

Lat:


TMDL Sampling

Client:Date

Inspection Type:


ClearNo

Flow Odor

Velocity of Flow:


Observations:12”Discharge PointGCM-24.MH.DP

NoNoNoNoNo

Abnormal Growth:

Sewage:Oil Sheen:

No



Sample sent to Lab:

Total Rainfall (Inches): .85"



Time Collected:



NoStaining:

Suds:Odor:Color:

ClearNo

Yes

No


Color of Flow:

Additional Comments:AEG observed a basin upstream that had leaf debris covering the basin. This could negatively impact the test results. AEG suggests that this basin be regularly swept.

GCM-24.MH.DP TMDL9:05 am < 48 HoursRainManhole

Yes

Slimes:


Phone: (248) 426-0135Fax: (248) 426-0136







Sample ID: GCM-28.CB TMDL pH:Time Collected: 8:55 am Temperature: Last Rain Event: < 48 Hours E. coli:

Current Weather: Rain Total Phosphorus:Sample Location Type: Catch Basin Other:Total Rainfall (Inches) .85" Other:



Staining:Suds:

Sewage: Additional Comments:Bacterial Sheen: No AEG observed geese in the area which could lead to increased levels of E. coli in the samples.

Algae: NoSlimes: No

Abnormal Growth: No

Lat:East of door D1 on east bus drive.



Standing Water: Yes Yes, ContinousRain

NoNo


Flow Observed:

12”

Velocity of Flow: Substantial

Structure Information:GCM-28.CB Structure Type

Color:

Location:

Evan Gist

Building: Garden City Middle School

Catch Basin

Inspectors: Kellie Das Brendan KoziolClient:





Phone: (248) 426-0135Fax: (248) 426-0136



TM

September 09, 2020




Subject: Garden City Middle School TMDL

AE200001-GCPS

Dear Ms. Perfetti :












Sincerely,




Sample ID:


2105 Pless Drive


Phone: (810)229-7575 (810)229-8650







Dip Cup Blank TMDL

09/08/2020


Submit Date:

Garden City Middle School TMDLProject Name:

Project Number:



Analysis

Date

BA Sample ID: CN02229 AE200001-GCPS

Analyst

To:





Released by

Date 9/9/2020

1


Sample ID:


2105 Pless Drive


Phone: (810)229-7575 (810)229-8650







GCM-28.CB TMDL

09/08/2020


Submit Date:


Project Number:



Analysis

Date


Analyst

To:





Released by

Date 9/9/2020

1


Sample ID:


2105 Pless Drive


Phone: (810)229-7575 (810)229-8650







GCM-24.MH.DP TMDL

09/08/2020


Submit Date:


Project Number:



Analysis

Date


Analyst

To:





Released by

Date 9/9/2020

1





September 2, 2020 Mr. Neil Greene Director of Operations Garden City Public Schools 33980 Marquette Garden City, Michigan 48135 [email protected] RE: Project # AE200001 GCPS Total Maximum Daily Load (TMDL) Sampling Report Lathers Early Childhood and Kindergarten Center Dear Mr. Greene: Arch Environmental Group, Inc. recently conducted a round of TMDL Wet Weather Sampling at discharge points LEC-03.FS.DP and LEC-06.FS.DP at Lathers Early Childhood and Kindergarten Center on May 18, 2020, in accordance with the applicable NPDES Permit requirements. TMDL sampling is used to determine the level of specific pollutants in the stormwater system by collecting samples from 50% of the district’s stormwater outfalls/discharge points during a representative wet weather event. The sampling results are then evaluated to determine if a particular point source needs to be addressed to reduce the pollutant load of the receiving waters. A report regarding the findings of this round of TMDL Sampling is attached. If you have questions regarding this report, please feel free to contact please feel free to contact the cleanWATER team at (248) 426-0165. Sincerely, Arch Environmental Group, Inc. Environmental Services

Jacqueline Keeler Consultant


TMDL Sampling Report Page 2 Project # AE200001 GCPS Lathers Early Childhood and Kindergarten Center

TABLE OF CONTENTS

1.0 Project Summary 2.0 TMDL Sampling Procedures 3.0 TMDL Sampling Results 4.0 Conclusion/Recommendations 5.0 Best Management Practices to Reduce TMDL Pollutant Loads



1.0 / Project Summary Arch Environmental Group, Inc. (AEG) recently conducted a round of Total Maximum Daily Load (TMDL) Sampling for E. coli at discharge locations LEC-03.FS.DP and LEC-06.FS.DP at Lathers Early Childhood and Kindergarten Center on May 18, 2020, in accordance with the applicable National Pollutant Discharge Elimination System (NPDES) Permit requirements.


Monitoring is not required for Biota/Sediment TMDLs under the MS4 permits.2 The receiving water body of Lathers Early Childhood and Kindergarten Center is the Perrin Drain of the Rouge River. The Rouge River has been designated with a TMDL of E. coli and Biota/Sediment. Further details on the TMDL(s) listed can be found in the documents “Total Maximum Daily Load for Biota for the River Rouge Watershed, Including Bishop and Tonquish Creeks” and Total Maximum Daily Load for E. coli for the Rouge River”. Some examples of potential sources of E. coli in waterways include fecal material from livestock, humans, wildlife, waterfowl such as geese, and sanitary systems. Some examples of potential sources of sediment include erosion and construction activities. 2.0 / TMDL Sampling Procedures Applicable TMDL sampling was conducted with guidance from the “Storm Water Sampling Guidance for Total Phosphorus & E. coli.” Sampling was conducted at designated discharge points during a rain event of approximately .25 inches or more. Please see the attached TMDL Screening Inspection Logs for specific rainfall amounts. Sampling was conducted on May 18, 2020 and the last significant rain event was on May 17, 2020. The weather history for the rain event is available upon request.

Anytime that a sampling occurs, a blank sample is also collected to ensure there has been no contamination from the sampling device or sampling process. The blank collected during this round of TMDL sampling came back at zero (0) CFU for E. coli indicating that no contamination occurred. The lab results of the blank sample are attached. Furthermore, all sampling devices were decontaminated with bleach water and distilled water between each sampling location according to the protocol laid out in the “Storm Water Sampling Guidance for Total Phosphorus & E. coli.” Each location sampled was analyzed for pH and temperature while on-site and the sampled discharge point (DP) was inspected for color, odor, and abnormal vegetative growth. The collected samples were delivered to an external laboratory for analysis.






Structure ID: LEC-03.FS.DP Structure Type: Flow Splitter Location: North parking lot

At the time of the sampling, clear water flow was noted, and LEC-03.FS.DP was free of odors, and abnormal vegetative growth. AEG collected a grab sample from LEC-03.FS.DP and the sample was screened for temperature and pH in the field. An E. coli grab sample was delivered to an external laboratory for analysis. Results from the sampling are summarized below. A more detailed TMDL Screening Inspection Log is also attached at the end of the report.

Parameter: Results: TMDL Benchmark Standard: Units: pH 7.11 6.5 - 9 pH Units Temperature 14.4 N/A Celsius E. coli 435.2 300 CFU per 100mL The sample results for discharge location LEC-03.FS.DP did not identify elevated levels of pH above the TMDL Benchmark Standards. However, highlighted values in the tables above indicate that for discharge location LEC-03.FS.DP, the reported levels for E. coli (435.2 CFU) are above the Michigan Public Health Department standards for Total Body Contact (E. coli >300 CFU). Structure ID: LEC-06.FS.DP Structure Type: Flow Splitter Location: South parking lot

At the time of the sampling, clear water flow was noted, and discharge point LEC-06.FS.DP was free of odors, and abnormal vegetative growth. AEG observed high levels of calcium carbonate build up in the pipes. AEG collected a grab sample from discharge point LCE-06.FS.DP and the sample was screened for temperature and pH in the field. An E. coli grab sample was delivered to an external laboratory for analysis. Results from the sampling are summarized below. A more detailed TMDL Screening Inspection Log is also attached at the end of the report.

Parameter: Results: TMDL Benchmark Standard: Units: pH 10.22 6.5 - 9 pH Units Temperature 16.2 N/A Celsius E. coli 145.5 300 CFU per 100mL

The sample results for discharge location LEC-06.FS.DP did not identify elevated levels of E. coli above the TMDL Benchmark Standards. However, highlighted values in the tables above indicate that for discharge location LEC-



06.FS.DP, the reported levels for pH (10.22) are above the Michigan Public Health Department standards for hydrogen ion concentration expressed as pH (6.5-9).

4.0 / Conclusion/Recommendations AEG did identify elevated levels of pH above the TMDL Benchmark Standards for discharge location LEC-06.FS.DP and elevated levels of E. coli above the TMDL Benchmark Standards for discharge location LEC-03.FS.DP.

Arch Environmental Group, Inc. recommends that the elevated location LEC-03.FS.DP be re-assessed each permit cycle (two rounds of sampling occur per permit cycle) to ascertain whether greater or reduced potential for E. coli TMDL contribution has occurred. Additionally, these sites will be monitored annually during regularly scheduled Routine Storm sewer Structural Inspections for changes in conditions or site activities.

Geese, gulls and ducks are speculated to be a major bacterial source in urban areas, particularly where large populations congregate. E. coli (Escherichia Coli) is a sub-group of the fecal coliform group and can be used as an indicator of fecal contamination. E. coli bacteria exist in animal and human fecal matter.4 Elevated levels of E. coli typically occur at sites which have leaking sanitary sewer systems, failed septic systems, or populations of wild or domesticated animals. E. coli originating from birds, raccoons and other wildlife may be present in large numbers in stormwater runoff. In an effort to determine the cause of the benchmark exceedance of E. coli, Arch Environmental Group reviewed the layout of the school storm water system as well as past tracer dye studies. Based on this investigation, sanitary sewer contamination from Lathers Early Childhood and Kindergarten Center is not suspected. The source is likely natural sources, such as the presence of wild animals from the large playground and field in between the two sampled discharge points where birds were seen on site.

AEG observed a playground and field which is likely the source of the high results. AEG recommends getting a decoy to place in the fenced in pond area. This decoy will scare away the birds and animals. (https://www.watchdoggoosepatrol.com/)

A potential source of high pH in waterways can be caused by high concentrations of limestone or calcium carbonate. These occur naturally in soils and they can leach into waterways with stormwater runoff. Water that is high in pH is often referred to as “Hard Water”. “Hard Water” often carries minerals such as iron and will try to become more neutral by releasing these minerals. Once the mineral, iron in this case, is released, it oxidizes and becomes rust. In an effort to determine the cause of the benchmark exceedance of pH, Arch Environmental Group reviewed the layout of the school storm water system and surrounding area land use. AEG believes the high levels of pH at LEC-06.FS.DP are due to calcium carbonate found in the pipes of the discharge point and the upstream basin. 5.0 / Best Management Practices to Reduce TMDL Pollutant Loads The Garden City Public Schools Stormwater Management Plan (SWMP) identifies and defines the districts BMPs to comply with the Six Minimum Measures that are the front line in the nationwide effort to reducing polluted stormwater discharges to our lake, rivers and streams. The Michigan Department of Environment, Great Lakes, and Energy recognizes that having a Stormwater Management Plan in place built around the Six Minimum Measures specified in the NPDES General Jurisdictional Permit have the potential to significantly contribute to the reduction of TMDL Pollutants in the surface waters of the state. A link to the districts current SWMP can be found on the district’s website under public notices at http://www.gardencityschools.com/departments/student_services.php

The Six Minimum Measures are listed below:


https://www.watchdoggoosepatrol.com/




The following is a list of prioritized TMDL best management practices from the districts SWMP that Garden City Public Schools should continue to implement in order to improve water quality impairments associated with the E. coli and Biota/Sediment TMDL of the Rouge River Watershed Prioritization of BMPs is based on Garden City Public Schools targeted TMDL pollutants. Priority is given to BMPs that reduce E. coli loads and address water quality for biota.




















435.2 300 CFU per 100mLNA NA NANA NA NANA NA NANA NA NA

Building:Samplers:

Lathers Early Childhood and KindergartenCarly DoulosAlex Reiber

Structure Type Flow Splitter

North parking lot

42.19672 83.191072

Location:

Yes, ContinousStormwaterModerate

Lat:


TMDL Sampling

Client:Date

Inspection Type:


ClearNo

Flow Odor

Velocity of Flow:


Observations:12”Discharge PointLEC-03.FS.DP

NoNoNoNoNo

Abnormal Growth:

Sewage:Oil Sheen:

No



Sample sent to Lab:

Total Rainfall (Inches): 0.3



Time Collected:



NoStaining:

Suds:Odor:Color:

ClearNo

Yes

No


Color of Flow:

Additional Comments:Large playground/ field in between the two sampled discharge points, potential for animal feces. Birds noted to have been seen on site.

LEC-03.FS.DP.TMDL10:25< 48 HoursOvercastFlow Splitter

Yes

Slimes:


Phone: (248) 426-0135Fax: (248) 426-0136







NA NA NANA NA NANA NA NANA NA NA

Sample ID: LEC-06.FS.DP pH: No photo due to lid being sealed shutTime Collected: 11:00 am Temperature: Last Rain Event: < 48 Hours E. coli:

Current Weather: Rain Total Phosphorus:Sample Location Type: Flow Splitter Other:Total Rainfall (Inches) 0.3 Other:



Staining:Suds:

Sewage: Additional Comments:Bacterial Sheen: No AEG assumes that the high pH value is due to the build up of calcium carbonate in the pipes. The upstream basin was

noted to also have calcium carbonate build up. Algae: NoSlimes: No

Abnormal Growth: No

Lat: 42.19138 83.191062South parking lot




Discharge Point

Stormwater

NoNo


Flow Observed:

12”

Velocity of Flow: Moderate

Structure Information:LEC-06.FS.DP Structure Type

Color:

Location:

Building: Lathers Early Childhood and Kindergarten

Flow Splitter

Inspectors: Alex Reiber Carly DoulosClient:





Phone: (248) 426-0135Fax: (248) 426-0136



TM

May 19, 2020




Subject: Lathers Early Childhood Center-TMDL Sampling

AE200001 GCPS

Dear Ms. Perfetti :












Sincerely,




Sample ID:


2105 Pless Drive


Phone: (810)229-7575 (810)229-8650







TMDL-Blank

05/18/2020


Submit Date:

Lathers Early Childhood Center-TMDL SamplingProject Name:

Project Number:



Analysis

Date

BA Sample ID: CM05429 AE200001 GCPS

Analyst

To:





Released by

Date 5/19/2020

1


Sample ID:


2105 Pless Drive


Phone: (810)229-7575 (810)229-8650







LEC-03.FS.DP.TMDL

05/18/2020


Submit Date:


Project Number:



Analysis

Date


Analyst

To:





Released by

Date 5/19/2020

1


Sample ID:


2105 Pless Drive


Phone: (810)229-7575 (810)229-8650







LEC-06.FS.DP.TMDL

05/18/2020


Submit Date:


Project Number:



Analysis

Date


Analyst

To:





Released by

Date 5/19/2020

1


Sample ID:


2105 Pless Drive


Phone: (810)229-7575 (810)229-8650







Blank-TMDL

05/18/2020


Submit Date:

Douglas 3-4 Building-TMDL SamplingProject Name:

Project Number:



Analysis

Date


Analyst

To:





Released by

Date 5/19/2020

1

www.archenvgroup.com healthAIR - Industrial Hygiene Services

cleanWATER - Consulting & Testing Services safeEARTH - Hazardous Waste & Recycling Services

DETROIT GRAND RAPIDS CHICAGO (248) 426-0165 (616) 930-4116 (847) 462-9687Farmington Hills, MI Cedar Springs, MI Cary, IL

June 8, 2020

Mr. Neil Greene Director of Operations Garden City Public Schools 33980 Marquette Garden City, Michigan 48135 [email protected]

RE: Project # AE200001 GCPS Total Maximum Daily Load (TMDL) Sampling Report Maplewood Community Center

Dear Mr. Greene:

Arch Environmental Group, Inc. recently conducted a round of TMDL Wet Weather Sampling at discharge point MMC-02.CB.DP at the Maplewood Community Center on May 15, 2020, in accordance with the applicable NPDESPermit requirements. TMDL sampling is used to determine the level of specific pollutants in the stormwatersystem by collecting samples from 50% of the district’s stormwater outfalls/discharge points during arepresentative wet weather event. The sampling results are then evaluated to determine if a particular pointsource needs to be addressed to reduce the pollutant load of the receiving waters. A report regarding the findingsof this round of TMDL Sampling is attached.

If you have questions regarding this report, please feel free to contact please feel free to contact the cleanWATER team at (248) 426-0165.

Sincerely,

Arch Environmental Group, Inc. Environmental Services



TMDL Sampling Report Page 2 Project # AE200001 GCPS Maplewood Community Center

TABLE OF CONTENTS




1.0 / Project Summary Arch Environmental Group, Inc. (AEG) recently conducted a round of Total Maximum Daily Load (TMDL) Sampling for E. coli at discharge location MMC-02.CB.DP at the Maplewood Community Center on May 15, 2020, in accordance with the applicable National Pollutant Discharge Elimination System (NPDES) Permit requirements.



The receiving water body of the Maplewood Community Center is the Middle Rouge River. The Rouge River has been designated with TMDLs of E. coli and Biota/Sediment, and/or Dissolved Oxygen. Further details on the TMDL(s) listed can be found in the documents “Total Maximum Daily Load for E. coli for the Rouge River” and “Total Maximum Daily Load for Biota for the River Rouge Watershed, Including Bishop and Tonquish Creeks”. Some examples of potential sources of E. coli in waterways include fecal material from livestock, humans, wildlife, waterfowl such as geese, and sanitary systems. Some examples of potential sources of sediment include erosion and construction activities.







• E. coli: The WQS for E. coli is the maximum amount of E. coli that is allowable in surface waters of thestate. These standards are known as total body contact and partial body contact standards. Total bodycontact is a more conservative standard used during the summer to protect swimmers during total bodycontact and has the daily maximum of 300 CFU per 100 milliliters (mL). This applies to the warmer monthsof May 1st -October 31stand is the standard being used in this report. Partial body contact is the dailymaximum of 1,000 CFU per 100 mL and applies to the waterways year-round. 3

Structure ID: MMC-02.CB.DP Structure Type: Catch Basin Location: SW of basketball court along road in grass

At the time of the sampling, clear water flow was noted, and MMC-02.CB.DP was free of odors, and abnormal vegetative growth. AEG collected a grab sample from MMC-02.CB.DP and the sample was screened for temperature and pH in the field. An E. coli grab sample was delivered to an external laboratory for analysis. Results from the sampling are summarized below. A more detailed TMDL Screening Inspection Log is also attached at the end of the report.


The sample results for MMC-02.CB.DP did not identify elevated levels of pH above the TMDL Benchmark Standards. However, highlighted values in the tables above indicate that for outfall location MMC-02.CB.DP, the reported levels for E. coli (868.4 CFU) are above the Michigan Public Health Department standards for Total Body Contact (E. coli >300 CFU).

4.0 / Conclusion AEG did not identify any elevated levels of pH above the TMDL Benchmark Standards for discharge location MMC-02.CB.DP sampled at the Maplewood Community Center on May 15, 2020. However, AEG did identify elevatedlevels of E. coli above the TMDL Benchmark Standards for discharge location MMC-02.CB.DP.

Arch Environmental Group, Inc. recommends that the elevated location MMC-02.CB.DP be re-assessed each permit cycle (two rounds of sampling occur per permit cycle) to ascertain whether greater or reduced potential for E. coli TMDL contribution has occurred. Additionally, these sites will be monitored annually during regularlyscheduled Routine Storm sewer Structural Inspections for changes in conditions or site activities.

Geese, gulls and ducks are speculated to be a major bacterial source in urban areas, particularly where large populations congregate. E. coli (Escherichia Coli) is a sub-group of the fecal coliform group and can be used as an



indicator of fecal contamination. E. coli bacteria exist in animal and human fecal matter.4 Elevated levels of E. coli typically occur at sites which have leaking sanitary sewer systems, failed septic systems, or populations of wild or domesticated animals. E. coli originating from birds, raccoons and other wildlife may be present in large numbers in stormwater runoff. In an effort to determine the cause of the benchmark exceedance of E. coli, Arch Environmental Group reviewed the layout of the school storm water system as well as past tracer dye studies. Based on this investigation, sanitary sewer contamination from the Maplewood Community Center is not suspected. The source is likely natural sources, such as the presence of wild animals from the soccer field or the courtyard garden. Another possible source is the offsite residential road where there are many trash cans and debris.


• Public Education and Outreach Program (PEP)• Public Involvement and Participation Program (PIP)• Illicit Discharge Elimination Program (IDEP)• Post Construction Stormwater Management Program• Construction Site Stormwater Runoff Control Program• Pollution Prevention/Good Housekeeping Program.


E. COLI1. GCPS will use its website to provide the public with information regarding pet waste (SEMCOG links).

Additionally, SEMCOG pet waste posters are placed at various school buildings.2. GCPS will prohibit illicit discharges, inspect and monitor suspected illicit discharges, and enforce

elimination of the illicit discharges and connections.3. GCPS has reviewed all facilities for cross-connections between the sanitary and storm sewer systems.4. GCPS will conduct bimonthly inspections of parking lot and curb areas and hand clean as needed.5. GCPS has established programs for soil erosion and sediment control from new or redevelopment

construction. Such developments require permits and inspections for practices to keep exposed soilson site or controlled from runoff.






6. GCPS has implemented routine visual inspections of stormwater structural controls.7. GCPS will remove excessive sediments from structural sediment removal systems to maintain the

maximum designed performance. Sediments will be disposed of offsite in accordance with Parts 115or 121.


(E. coli and biota TMDL Best Management Practice).2. GCPS will continue to educate staff, faculty, and students using various venues including the “Seven

Simple Steps to Clean Water” program educational materials developed by the various watershedgroups specifically related to these issues on the stormwater management webpage.

3. The district passed a post-construction stormwater board resolution to require implementation ofthe stormwater standards for construction.

4. Adequately maintains vegetation around stormwater facilities, ditches, and ponds.5. Provide training to applicable staff and confirm training from contractors including restrictions on the

use of phosphorous containing fertilizers, soaps, cleaners and other chemicals that could impact theseparate storm drain system.



cc: AE200001 project file


ID Number: Long:

Type:

Outfall Dimensions



7.76 6.5 ‐ 9 pH units

15.9 N/A Celsius

868.4 300 CFU per 100mL

N/A N/A ug/L

Building:

Samplers:

Maplewood Community Center Steven RipleyKellie Das


Southwest of basketball court along road in grass

42.331424 83.355407

Location:

Yes, Continous

Downstream basins

Slow

Lat:


TMDL Sampling

Client:

Date

Inspection Type:


Standing Water:

Clear

No

Flow Odor

Velocity of Flow:


Observations:

12”

Discharge Point

MMC‐02.CB.DP

No

No

No

No

No

Abnormal Growth:

Sewage:

Oil Sheen:

No

Algae:

Bacterial Sheen:


Sample sent to Lab:


Sample ID:

Temperature:

pH:

E. coli:

Total Phosphorus:

Other:

Other:

Other:

Time Collected:

Current Weather:

Last Rain Event:


No

Staining:

Suds:

Odor:

Color:

Clear

No

Yes

No

Flow Observed:

Source of Flow:

Color of Flow:


Discharge point located directly along a residential street.

MMC‐02.CB.DP TMDL

11:45 AM

< 48 Hours

Overcast

Catch Basin

Yes

Slimes:




Phone: (248) 426‐0135

Fax: (248) 426‐0136



TM

May 18, 2020




Subject: Maplewood Community Center TMDL

AE200001-GCPS

Dear Ms. Sendra :












Sincerely,




Sample ID:


2105 Pless Drive


Phone: (810)229-7575 (810)229-8650







MMC-02.CB.DP TMDL

05/15/2020


Submit Date:

Maplewood Community Center TMDLProject Name:

Project Number:



Analysis

Date


Analyst

To:





Released by

Date 5/18/2020

1


Sample ID:


2105 Pless Drive


Phone: (810)229-7575 (810)229-8650







Blank-Dip Cup TMDL

05/15/2020


Submit Date:


Project Number:



Analysis

Date


Analyst

To:





Released by

Date 5/18/2020

1





July 20, 2020 Mr. Neil Greene Director of Operations Garden City Public Schools 33980 Marquette Garden City, Michigan 48135 [email protected] RE: Project # AE200001 GCPS Total Maximum Daily Load (TMDL) Sampling Report Memorial 1-2 Campus Dear Mr. Greene: Arch Environmental Group, Inc. recently conducted a round of TMDL Wet Weather Sampling at discharge points MML-02.MH.DP and MML-03.MH.DP at Memorial 1-2 Campus on May 15, 2020, in accordance with the applicable NPDES Permit requirements. TMDL sampling is used to determine the level of specific pollutants in the stormwater system by collecting samples from 50% of the district’s stormwater outfalls/discharge points during a representative wet weather event. The sampling results are then evaluated to determine if a particular point source needs to be addressed to reduce the pollutant load of the receiving waters. A report regarding the findings of this round of TMDL Sampling is attached. If you have questions regarding this report, please feel free to contact please feel free to contact the cleanWATER team at (248) 426-0165. Sincerely, Arch Environmental Group, Inc. Environmental Services



TMDL Sampling Report Page 2 Project # AE200001 GCPS Memorial 1-2 Campus

TABLE OF CONTENTS




1.0 / Project Summary Arch Environmental Group, Inc. (AEG) recently conducted a round of Total Maximum Daily Load (TMDL) Sampling for E. coli at discharge locations MML-02.MH.DP and MML-03.MH.DP at Memorial 1-2 Campus on May 15, 2020, in accordance with the applicable National Pollutant Discharge Elimination System (NPDES) Permit requirements.



The receiving water body of Memorial 1-2 Campus is the Middle Rouge River. The Rouge River has been designated with TMDLs of E. coli and Biota/Sediment. Further details on the TMDL(s) listed can be found in the documents “Total Maximum Daily Load for E. coli for the Rouge River” and “Total Maximum Daily Load for Biota for the River Rouge Watershed, Including Bishop and Tonquish Creeks”. Some examples of potential sources of E. coli in waterways include fecal material from livestock, humans, wildlife, waterfowl such as geese, and sanitary systems. Some examples of potential sources of sediment include erosion and construction activities.





• E. coli: The WQS for E. coli is the maximum amount of E. coli that is allowable in surface waters of the state. These standards are known as total body contact and partial body contact standards. Total body



contact is a more conservative standard used during the summer to protect swimmers during total body contact and has the daily maximum of 300 CFU per 100 milliliters (mL). This applies to the warmer months of May 1st -October 31stand is the standard being used in this report. Partial body contact is the daily maximum of 1,000 CFU per 100 mL and applies to the waterways year-round. 3

Structure ID: MML-02.MH.DP Structure Type: Manhole Location: NE corner of property, in grass

At the time of the sampling, clear water flow was noted, and MML-02.MH.DP was free of odors, and abnormal vegetative growth. AEG collected a grab sample from MML-02.MH.DP and the sample was screened for temperature and pH in the field. An E. coli grab sample was delivered to an external laboratory for analysis. Results from the sampling are summarized below. A more detailed TMDL Screening Inspection Log is also attached at the end of the report.


The sample results for MML-02.MH.DP did not identify elevated levels of pH or E. coli above the TMDL Benchmark Standards. The reported levels for E. coli (149.5 CFU) are below the Michigan Public Health Department standards for Total Body Contact (E. coli >300 CFU).

Structure ID: MML-03.MH.DP Structure Type: Manhole Location: SE corner of W parking lot, N of drive in grass

At the time of the sampling, clear water flow was noted, and MML-03.MH.DP was free of odors, and abnormal vegetative growth. There were organic suds noted in MML-03.MH.DP, as well as a slight oil sheen. AEG collected a grab sample from MML-03.MH.DP and the sample was screened for temperature and pH in the field. An E. coli grab sample was delivered to an external laboratory for analysis. Results from the sampling are summarized below. A more detailed TMDL Screening Inspection Log is also attached at the end of the report.


The sample results for MML-03.MH.DP did not identify elevated levels of pH above the TMDL Benchmark Standards. However, highlighted values in the tables above indicate that for outfall location MML-03.MH.DP, the reported levels for E. coli (2419.6 CFU) are above the Michigan Public Health Department standards for Total Body Contact (E. coli >300 CFU)

3 “Michigan’s E. Coli Water Quality Standard Guidance” May 2016. MDEQ


4.0 / Conclusion AEG did not identify any elevated levels of pH or E. coli above the TMDL Benchmark Standards for discharge location MML-02.MH.DP sampled at Memorial 1-2 Campus on May 15, 2020. However, AEG did identify elevated levels of E. coli above the TMDL Benchmark Standards for discharge location MML-03.MH.DP.

Arch Environmental Group, Inc. recommends that the elevated location MML-03.MH.DP be re-assessed each permit cycle (two rounds of sampling occur per permit cycle) to ascertain whether greater or reduced potential for E. coli TMDL contribution has occurred. Additionally, these sites will be monitored annually during regularly scheduled Routine Storm sewer Structural Inspections for changes in conditions or site activities.

Geese, gulls, and ducks are speculated to be a major bacterial source in urban areas, particularly where large populations congregate. E. coli (Escherichia Coli) is a sub-group of the fecal coliform group and can be used as an indicator of fecal contamination. E. coli bacteria exist in animal and human fecal matter.4 Elevated levels of E. coli typically occur at sites which have leaking sanitary sewer systems, failed septic systems, or populations of wild or domesticated animals. E. coli originating from birds, raccoons and other wildlife may be present in large numbers in stormwater runoff. In an effort to determine the cause of the benchmark exceedance of E. coli, Arch Environmental Group reviewed the layout of the school storm water system as well as past tracer dye studies. Based on this investigation, sanitary sewer contamination from Memorial 1-2 Campus is not suspected. The source is likely natural sources, such as the presence of wild animals in the open fields and playground area.




E. COLI






1. GCPS will use its website to provide the public with information regarding pet waste (SEMCOG links). Additionally, SEMCOG pet waste posters are placed at various school buildings.

2. GCPS will prohibit illicit discharges, inspect, and monitor suspected illicit discharges, and enforce elimination of the illicit discharges and connections.

3. GCPS has reviewed all facilities for cross-connections between the sanitary and storm sewer systems. 4. GCPS will conduct bimonthly inspections of parking lot and curb areas and hand clean as needed. 5. GCPS has established programs for soil erosion and sediment control from new or redevelopment









use of phosphorous containing fertilizers, soaps, cleaners, and other chemicals that could impact the separate storm drain system.




ID Number: Long:

Type:

Outfall Dimensions



8.29 6.5 ‐ 9 pH units

17.9 N/A Celsius

149.5 300 CFU per 100mL

N/A N/A ug/L

Slimes:

No

Staining:

Suds:

Odor:

Color:

Clear

No

Yes

No

Flow Observed:

Source of Flow:

Color of Flow:


MML‐02.MH.DP TMDL

3:00 PM

< 48 Hours

Overcast

Manhole

Yes

Algae:

Bacterial Sheen:


Sample sent to Lab:


Sample ID:

Temperature:

pH:

E. coli:

Total Phosphorus:

Other:

Other:

Other:

Time Collected:

Current Weather:

Last Rain Event:


Flow Odor

Velocity of Flow:


Observations:

12”

Discharge Point

MML‐02.MH.DP

No

No

No

No

No

Abnormal Growth:

Sewage:

Oil Sheen:

No

Building:

Samplers:

Memorial 1‐2 CampusSteven RipleyKellie Das


Northeast corner of property, in grass

42.19521 83.20841

Location:

Yes, Continous

Downstream basins and field drain

Slow

Lat:


TMDL Sampling

Client:

Date

Inspection Type:


Standing Water:

Clear

No




Phone: (248) 426‐0135

Fax: (248) 426‐0136



ID Number: Long:

Type:

Outfall Dimensions



7.98 6.5 ‐ 9 pH units

16.9 N/A Celsius

2419.6 300 CFU per 100mL

N/A N/A ug/L





Color:

Location:

Building: Memorial 1‐2 Campus

Manhole

Slight

No

Clear Source of Flow:

No

Organic

No

Flow Observed:

12”

Velocity of Flow: Slow


MML‐03.MH.DPStructure Type Lat: 42.19872 83.20818

Southeast corner of west parking lot, north of drive in grass

Observations:


Color of Flow: Clear

Odor:


Discharge Point

Downstream basins

Flow Odor No

Oil Sheen:

Staining:

Suds:

Sewage: Additional Comments:

Bacterial Sheen: No Stormwater in MML‐03.MH.DP had a lot of debris and slight oil sheen was noted. Stormwater looked dirty with some

organic suds.Algae: No

Slimes: No

Abnormal Growth: No

Sample ID: MML‐03.MH.DP TMDL pH:

Time Collected: 2:50 PM Temperature:

Last Rain Event: < 48 Hours E. coli:

Current Weather: Overcast Total Phosphorus:

Sample Location Type: Manhole Other:

Total Rainfall (Inches) .77 Other:

Other:





Phone: (248) 426‐0135

Fax: (248) 426‐0136



TM

May 18, 2020




Subject: Memorial 1-2 Campus TMDL

AE200001-GCPS

Dear Ms. Sendra :












Sincerely,




Sample ID:


2105 Pless Drive


Phone: (810)229-7575 (810)229-8650







MML-03.MH.DP TMDL

05/15/2020


Submit Date:

Memorial 1-2 Campus TMDLProject Name:

Project Number:



Analysis

Date


Analyst

To:





Released by

Date 5/18/2020

1


Sample ID:


2105 Pless Drive


Phone: (810)229-7575 (810)229-8650







MML-02.MH.DP TMDL

05/15/2020


Submit Date:

Memorial 1-2 Campus TMDLProject Name:

Project Number:



Analysis

Date


Analyst

To:





Released by

Date 5/18/2020

1


Sample ID:


2105 Pless Drive


Phone: (810)229-7575 (810)229-8650







Blank-Dip Cup TMDL

05/15/2020


Submit Date:


Project Number:



Analysis

Date


Analyst

To:





Released by

Date 5/18/2020

1





June 8, 2020 Mr. Neil Greene Director of Operations Garden City Public Schools 33980 Marquette Garden City, Michigan 48135 [email protected] RE: Project # AE200001 GCPS Total Maximum Daily Load (TMDL) Sampling Report Transportation and School Board Office Dear Mr. Greene: Arch Environmental Group, Inc. recently conducted a round of TMDL Wet Weather Sampling at discharge point GCT-08.CB.DP at the Transportation and School Board Office on May 15, 2020, in accordance with the applicable NPDES Permit requirements. TMDL sampling is used to determine the level of specific pollutants in the stormwater system by collecting samples from 50% of the district’s stormwater outfalls/discharge points during a representative wet weather event. The sampling results are then evaluated to determine if a particular point source needs to be addressed to reduce the pollutant load of the receiving waters. A report regarding the findings of this round of TMDL Sampling is attached. If you have questions regarding this report, please feel free to contact please feel free to contact the cleanWATER team at (248) 426-0165. Sincerely, Arch Environmental Group, Inc. Environmental Services



TMDL Sampling Report Page 2 Project # AE200001 GCPS Transportation and School Board Office

TABLE OF CONTENTS




1.0 / Project Summary Arch Environmental Group, Inc. (AEG) recently conducted a round of Total Maximum Daily Load (TMDL) Sampling for E. coli at discharge location GCT-08.CB.DP at the Transportation and School Board Office on May 15, 2020, in accordance with the applicable National Pollutant Discharge Elimination System (NPDES) Permit requirements.



The receiving water body of the Transportation and School Board Office is the Morgan Drain of the Rouge River. The Rouge River has been designated with TMDLs of E. coli and Biota/Sediment, and/or Dissolved Oxygen. Further details on the TMDLs listed can be found in the documents “Total Maximum Daily Load for E. coli for the Rouge River” and “Total Maximum Daily Load for Biota for the River Rouge Watershed, Including Bishop and Tonquish Creeks”. Some examples of potential sources of E. coli in waterways include fecal material from livestock, humans, wildlife, waterfowl such as geese, and sanitary systems. Some examples of potential sources of sediment include erosion and construction activities.








Structure ID: GCT-08.CB.DP Structure Type: Catch Basin Location: S property line, E of school board sign, in grass

At the time of the sampling, clear water flow was noted, and GCT-08.CB.DP was free of odors, and abnormal vegetative growth. AEG collected a grab sample from GCT-08.CB.DP and the sample was screened for temperature and pH in the field. An E. coli grab sample was delivered to an external laboratory for analysis. Results from the sampling are summarized below. A more detailed TMDL Screening Inspection Log is also attached at the end of the report.


The sample results for GCT-08.CB.DP did not identify elevated levels of pH above the TMDL Benchmark Standards. However, highlighted values in the tables above indicate that for outfall location GCT-08.CB.DP, the reported levels for E. coli (686.7 CFU) are above the Michigan Public Health Department standards for Total Body Contact (E. coli >300 CFU).

4.0 / Conclusion AEG did not identify any elevated levels of pH above the TMDL Benchmark Standards for discharge location GCT-08.CB.DP sampled at the Transportation and School Board Office on May 15, 2020. However, AEG did identify elevated levels of E. coli above the TMDL Benchmark Standards for discharge location GCT-08.CB.DP.

Arch Environmental Group, Inc. recommends that the elevated location GCT-08.CB.DP be re-assessed each permit cycle (two rounds of sampling occur per permit cycle) to ascertain whether greater or reduced potential for E. coli TMDL contribution has occurred. Additionally, these sites will be monitored annually during regularly scheduled Routine Storm sewer Structural Inspections for changes in conditions or site activities.

Geese, gulls and ducks are speculated to be a major bacterial source in urban areas, particularly where large populations congregate. E. coli (Escherichia Coli) is a sub-group of the fecal coliform group and can be used as an indicator of fecal contamination. E. coli bacteria exist in animal and human fecal matter.4 Elevated levels of E. coli typically occur at sites which have leaking sanitary sewer systems, failed septic systems, or populations of wild or domesticated animals. E. coli originating from birds, raccoons and other wildlife may be present in large numbers in stormwater runoff. In an effort to determine the cause of the benchmark exceedance of E. coli, Arch

3 “Michigan’s E. Coli Water Quality Standard Guidance” May, 2016. MDEQ 4 Sources of E. coli In Surface Water” - Great Lakes Water Institute, University of Wisconsin, Milwaukee http://www.glwi.uwm.edu/research/genomics/ecoli/sources_of_ecoli_in_water.php



Environmental Group reviewed the layout of the school storm water system as well as past tracer dye studies. Based on this investigation, sanitary sewer contamination from the Transportation and School Board Office is not suspected. The source is likely natural sources, such as the presence of wild animals in the football field and baseball field. There are many open fields throughout the facility.











(E. coli and biota TMDL Best Management Practice).




2. GCPS will continue to educate staff, faculty, and students using various venues including the “Seven Simple Steps to Clean Water” program educational materials developed by the various watershed groups specifically related to these issues on the stormwater management webpage.




GCPS strives to be good stewards of the land within their jurisdiction and to use appropriate Best Management Practices (BMPs) to contribute to the improvement of water quality. GCPS is committed to practicing sound stormwater management practices; including observance and adherence to all local, state, and federal stormwater statutes, rules, and regulations. Attachments: TMDL Screening Inspection Log Storm Sewer System Site Map Analytical Results & Chain of Custody cc: AE200001 project file






Building:Samplers:

Transportation and School Board OfficeSteven RipleyKellie Das


South property line, east of school board sign, in grass

42.318599 83.37459

Location:

Yes, ContinousDownstream basins Slow

Lat:


TMDL Sampling

Client:Date

Inspection Type:


ClearNo

Flow Odor

Velocity of Flow:


Observations:30”Discharge PointGCT-08.CB.DP

NoNoNoNoNo

Abnormal Growth:

Sewage:Oil Sheen:

No



Sample sent to Lab:




Time Collected:



NoStaining:

Suds:Odor:Color:

ClearNo

Yes

No


Color of Flow:


GCT-08.CB.DP TMDL 1:40 PM< 48 HoursOvercastCatch Basin

Yes

Slimes:


Phone: (248) 426-0135Fax: (248) 426-0136



TM

May 18, 2020




Subject: Transportation & School Board Office TMDL

AE200001-GCPS

Dear Ms. Sendra :












Sincerely,




Sample ID:


2105 Pless Drive


Phone: (810)229-7575 (810)229-8650







GCT-08.CB.DP TMDL

05/15/2020


Submit Date:

Transportation & School Board Office TMDLProject Name:

Project Number:



Analysis

Date


Analyst

To:





Released by

Date 5/18/2020

1


Sample ID:


2105 Pless Drive


Phone: (810)229-7575 (810)229-8650







Blank-Dip Cup TMDL

05/15/2020


Submit Date:


Project Number:



Analysis

Date


Analyst

To:





Released by

Date 5/18/2020

1

Documents

GCPS TMDL Sampling Locations