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AGENDA The City of Auburn Hills

Joint Meeting of the Planning Commission and

Brownfield Redevelopment Authority Tuesday, December 8, 2015 7:00 p.m.

LOCATION: Robert W. Grusnick Public Safety Building (Police/Fire) 1827 N. Squirrel Road Auburn Hills MI

PHONE: 248-364-6900 www.auburnhills.org Meeting minutes are on file in the City Clerk’s office.

1. MEETING CALLED TO ORDER 2. ROLL CALL OF PLANNING COMMISSION 3. ROLL CALL OF BROWNFIELD REDEVELOPMENT AUTHORITY 4. METHANE GAS INVESTIGATION

AKT Peerless - City’s Environmental Consultant Michigan Department of Environmental Quality Update regarding methane gas testing on and around property located at the southeast corner of Dutton Road and Bald Mountain Road (Sidwell No. 14-01-100-028).

5. ADJOURNMENT NOTE: Anyone planning to attend the meeting who has need of special assistance under the Americans with Disabilities Act (ADA) is asked to contact the City Clerk's Office at 370-9402 or the City Manager's Office at 370-9440 48 hours prior to the meeting. Staff will be pleased to make the necessary arrangements. If you wish to receive the Planning Commission meeting agenda on a regular basis via e-mail please call 364-6900 and request to be added to the distribution list.

Methane AssessmentBald Mountain Road

Met with residents - May 12, 2015

Installed 14 wells - June 2015

• MDEQ Action Level is 1.25% (by volume) in soil gas

• To date, the methane evaluation activities have not identified concentrations above the MDEQ action level

Sampling Period Results

June 25-26 2015 – 2 days

Methane detected in MW-1 (0.2-0.6%), MW-4 (0.1-0.4%), and MW-13 (0.1%)

August-November 2015 - 38 days

Methane detected in MW-1 consistently in every sample reading (0.1 to 1.1%)

MW-2 (0.5%), MW-14 (0.3%) – both had one time readings above 0.0%

1000 S. Washington Avenue, Suite 104 Lansing, Michigan 48910

T 517‐482‐9227 www.aktpeerless.com

November 16, 2015

Ms. Stephanie Carroll City of Auburn Hills 1827 North Squirrel Road Auburn Hills, Michigan 48326

Subject: Methane Assessment Summary Report

Bald Mountain Road at Dutton Road Auburn Hills, Michigan AKT Peerless Project No. 10281b

Ms. Stephanie Carroll:

The City of Auburn Hills retained AKT Peerless to conduct Methane Assessment Ac vi es along Bald Mountain Road south of Du on Road and on the property located at the southeast corner of Bald Mountain and Du on Roads in Auburn Hills, Michigan. The Methane Assessment Ac vi es were completed in accordance with AKT Peerless’ proposal Number PB‐17952 dated August 6, 2015.

Site Description

The inves ga on was completed within the western and eastern right‐of‐ways (ROWs) of Bald Mountain Road south of Du on Road and within the property located at the southeast corner of Bald Mountain Road and Du on Road (Parcel Iden fica on Number 14‐01‐100‐028).

Refer to Figure 1 for a topographic site loca on map. See Figure 2 for a site map for sample loca ons.

Previous Investigations

In October of 2014, G2 Consulting Group prepared a Report on Methane Gas Screening for the property currently identified as parcel 14‐01‐100‐028. At the time of G2’s assessment, 15 soil borings were advanced on the parcel. Each boring was converted into a temporary methane monitoring well. Methane gas readings ranged from 0% to 16% of the Lower Explosive Limit (LEL). The instrument that G2 used collected methane readings as percentage of LEL. AKT Peerless converted these readings into percent methane, which ranged from 0.0% to 0.8%. Oxygen gas readings ranged from 1.2% to 19% volume and carbon monoxide gas readings ranged from 0 to 235 parts per million (ppm).

In June of 2015, AKT Peerless installed 14 permanent monitoring wells within the eastern and western right‐of‐ways (ROWs) of Bald Mountain Road, as well as, on parcel ID 14‐01‐100‐028. Methane measurements were collected upon completion of the well installation. Methane gas was detected in 3 of the 14 monitoring wells, MW‐1, MW‐4 and MW‐13 at concentrations ranging from 0.1% to 0.6%.

METHANE ASSESSMENT ACTIVITIES | BALD MOUNTAIN ROAD AT DUTTON ROAD, AUBURN HILLS, MI PAGE 2

The remainder of the monitoring wells did not exhibit detectable concentrations of methane at the time of the June 2015 evaluation.

Scope of Work

On August 31, 2015, AKT Peerless initiated additional methane monitoring of the 14 previously identified, permanent monitoring wells. The wells were monitored up to 5 days a week between August 31, 2015 and October 9, 2015. The wells were monitored twice weekly between October 12, 2015 and November 12, 2015. AKT Peerless personnel collected real‐time monitoring data of the methane gas concentrations at each well location, as well as, oxygen, carbon dioxide and balance gas concentrations. A GEM 5000 was utilized during each sampling event after calibrations to manufacturer’s specifications. Weather conditions including the barometric pressure at the time of monitoring were also documented.

Refer to Table 1 for daily methane, oxygen, carbon dioxide and balance gas concentrations and Table 2 for daily weather data collected during the reporting period.

Findings

During the repor ng period one monitoring well (MW‐1) typically exhibited detectable methane concentra ons ranging from 0.1% to 1.1%. Monitoring well MW‐2 exhibited a detectable concentra on of methane (0.5%) on September 8, 2015, while monitoring well MW‐14 exhibited a detectable concentra on of methane (0.3%) on October 26, 2015. Methane was not detected in the remaining wells during the assessment period.

The MDEQ has iden fied a methane ac on level of 1.25% (by volume) in soil gas. To date, the methane evalua on ac vi es have not iden fied concentra ons of methane above the ac on level.

Recommendations

AKT Peerless recommends con nued monitoring of the permanent monitoring wells, albeit on a less frequent basis (once weekly). Upon comple on of addi onal monitoring, further discussions are warranted with the MDEQ to determine future ac ons.

Limitations

The informa on and opinions obtained in this report are for the exclusive use of the City of Auburn Hills. No distribu on to or reliance by other par es may occur without the express wri en permission of AKT Peerless. AKT Peerless will not distribute this report without your wri en consent or as required by law or by a Court order. The informa on and opinions contained in the report are given in light of that assignment. The report must be reviewed and relied upon only in conjunc on with the terms and condi ons expressly agreed upon by the par es and as limited therein. Any third par es who have been extended the right to rely on the contents of this report by AKT Peerless (which is expressly required prior to any third‐party release), expressly agrees to be bound by the original terms and condi ons entered into by AKT Peerless and the City of Auburn Hills.

Subject to the above and the terms and condi ons, AKT Peerless accepts responsibility for the competent performance of its du es in execu ng the assignment and preparing reports in accordance with the normal standards of the profession, but disclaims any responsibility for consequen al damages. Although AKT Peerless believes that results contained herein are reliable, AKT Peerless cannot warrant or

METHANE ASSESSMENT ACTIVITIES | BALD MOUNTAIN ROAD AT DUTTON ROAD, AUBURN HILLS, MI PAGE 3

guarantee that the informa on provided is exhaus ve or that the informa on provided by the City of Auburn Hills or third par es is complete or accurate.

Signatures of Environmental Professionals

The following individuals contributed to the comple on of this report.

Mary C. Hoeh, CHMM Senior Project Manger AKT Peerless Lansing, Michigan Office Phone: 517‐482‐9227 Fax: 517‐568‐1334

FIGURES

BALD MOUNTAIN ROADAUBURN HILLS, MICHIGAN

PROJECT NUMBER : 10281B-1-20

TOPOGRAPHIC LOCATION MAPDRAWN BY:

DATE:

OGO

07/01/2015

FIGURE 1

ROCHESTER QUADRANGLEMICHIGAN - OAKLAND COUNTY

7.5 MINUTE SERIES (TOPOGRAPHIC)

1 MILE

1 KILOMETER

7000 FEET100001000

01

01

MICHIGANQUADRANGLE LOCATION

IMAGE TAKEN FROM 1997 U.S.G.S. TOPOGRAPHIC MAP

2000 3000 4000 5000 6000

ILLINOIS MICHIGAN OHIO GEORGIA

www.aktpeerless.com

MW-6 MW-11

MW-7 MW-10

MW-5

MW-12

MW-8MW-9

MW-4

MW-2

MW-3MW-1

MW-13

MW-14

DU

TT

ON

RO

AD

BA

LD

M

OU

NT

AIN

R

OA

D

BALD MOUNTAIN ROADAUBURN HILLS, MICHIGAN

PROJECT NUMBER : 10281B-1-20

SITE MAP WITH MONITORING WELL LOCATIONS

= MONITORING WELL

DRAWN BY:

DATE:

OGO

07/01/2015

FIGURE 2

2501250SCALE: 1" = 250'

LEGEND

ILLINOIS MICHIGAN OHIO GEORGIA

www.aktpeerless.com

TABLES

Table 1

Methane, Carbon Dioxide, Oxygen and Balance Gas Readings

Bald Mountain Road

Auburn Hills

AKT Peerless Project No. 10281b

Date 8/31/2015 9/1/2015 9/2/2015 9/3/2015 9/8/2015 9/9/2015 9/10/2015 9/11/2015 9/14/2015 9/15/2015 9/16/2015 9/17/2015 9/18/2015 9/21/2015 9/22/2015 9/23/2015 9/24/2015 9/25/2015

Time 11:53 AM 10:12 AM 9:31 AM 9:56 AM 11:52 AM 10:32 AM 2:32 PM 9:47 AM 9:44 AM 10:38 AM 10:16 AM 9:36 AM 9:54 AM 10:19 AM 10:12 AM 9:54 AM 2:58 PM 8:22 AM

CH4% 0.4 0.5 0.5 0.8 0.8 0.5 1.0 1.1 0.6 0.3 0.5 0.8 1.0 0.6 0.6 0.5 0.6 0.4

CO2% 4.8 5.8 6.3 7.2 7.8 3.6 7.4 6.9 5.5 3.3 5.1 8.8 9.0 5.3 5.4 4.4 6.0 5.2

O2% 14.7 13.1 12.2 11.7 11.1 15.8 11.2 12.9 14.7 16.0 14.0 10.2 10.2 14.6 14.3 15.3 12.8 14.9

BAL% 80.3 80.7 81.0 80.5 80.4 80.1 80.4 79.3 79.3 80.4 80.5 80.3 79.7 79.6 79.9 79.8 80.7 79.6


CH4% 0.0 0.0 0.0 0.0 0.5 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0

CO2% 1.4 1.5 2.7 2.9 4.2 1.2 3.7 1.6 0.6 0.6 1.5 4.2 5.6 1.3 0.6 0.6 1.5 2.2

O2% 18.7 18.0 16.4 16.5 14.6 18.9 15.1 19.0 19.8 19.3 18.5 15.2 14.1 19.6 19.9 20.1 18.0 18.6

BAL% 80.0 80.4 80.9 80.6 81.1 80.0 81.2 79.5 79.7 80.1 80.1 80.6 80.4 79.1 79.5 79.3 80.5 79.3


CH4% 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0

CO2% 0.5 0.5 0.4 0.4 0.7 0.7 0.6 0.7 0.7 0.5 0.6 0.5 0.5 0.5 0.5 0.5 0.4 0.4

O2% 19.5 19.1 19.1 19.3 18.5 19.3 18.8 19.7 19.7 19.5 19.5 19.0 19.6 20.3 19.9 20.2 19.7 20.6

BAL% 80.0 80.4 80.4 80.3 80.9 80.0 80.6 79.6 79.6 80.0 79.9 80.4 79.9 79.2 79.6 79.3 79.9 79.0


CH4% 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0

CO2% 10.0 9.9 9.1 9.2 9.7 9.5 10.5 10.7 9.6 8.6 9.2 9.4 8.6 8.6 8.7 8.3 7.9 8.2

O2% 13.3 12.6 12.9 12.9 11.4 12.0 11.1 12.2 13.5 13.6 13.4 13.3 13.9 14.1 14.4 14.5 13.8 14.8

BAL% 76.8 77.5 78.0 77.9 78.9 78.4 78.4 77.2 76.9 77.8 77.3 77.2 77.5 77.1 77.0 77.2 78.5 76.9

Time 11:50 AM 9:55 AM 9:46 AM 10:09 AM 12:10 PM 10:44 AM 2:48 PM 10:00 AM 9:56 AM 10:48 AM 10:28 AM 9:50 AM 10:06 AM 10:31 AM 10:14 AM 10:06 AM 3:12 PM 8:36 AM

CH4% 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0

CO2% 4.9 4.8 4.6 4.7 5.7 5.7 6.5 5.7 5.9 4.7 4.7 4.9 5.2 5.8 5.4 4.7 6.4 6.2

O2% 16.6 16.3 15.7 15.8 13.6 14.6 13.4 15.4 15.5 15.7 15.9 16.3 16.2 16.3 16.3 17.0 14.8 16.3

BAL% 78.5 78.8 79.7 79.5 80.6 79.7 80.1 78.9 78.7 79.6 79.3 78.7 78.6 78.0 78.4 78.4 78.8 77.5

Time 12:30 PM 9:43 AM 9:54 AM 10:15 AM 12:18 PM 10:52 AM 2:56 PM 10:07 AM 10:02 AM 10:56 AM 10:34 AM 9:56 AM 10:12 AM 10:38 AM 10:32 AM 10:12 AM 3:18 PM 8:42 AM

CH4% 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0

CO2% 5.3 5.9 5.6 5.5 5.5 5.1 5.5 5.6 6.0 5.0 5.6 6.5 5.7 5.2 5.4 5.1 5.3 5.2

O2% 14.6 15.1 14.0 14.1 13.6 14.9 13.9 14.9 14.3 14.6 14.3 14.3 14.7 15.6 15.4 15.6 14.5 16.0

BAL% 80.0 79.0 80.4 80.4 80.9 80.0 80.7 79.6 79.7 80.4 80.2 79.2 79.6 79.2 79.3 79.3 80.2 78.8


CH4% 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0

CO2% 6.7 7.4 7.1 7.1 7.2 7.1 7.2 7.4 7.7 6.8 7.1 8.1 7.3 7.2 7.1 6.8 6.6 7.2

O2% 13.7 13.8 13.0 12.9 12.5 13.4 12.5 13.5 13.3 13.4 13.2 13.3 13.4 14.0 13.8 14.1 13.2 14.2

BAL% 79.5 78.7 79.0 80.0 80.4 79.5 80.2 79.1 79.1 79.7 79.7 78.6 79.3 78.7 79.1 79.2 80.3 78.6

Time 12:20 PM 9:50 AM 9:48 AM 10:11 AM 12:13 PM 10:47 AM 2:51 PM 10:02 AM 7:58 PM 10:50 AM 10:30 AM 9:52 AM 10:08 AM 10:34 AM 10:26 AM 10:08 AM 3:14 PM 8:38 AM

CH4% 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0

CO2% 4.9 5.1 4.7 5.3 6.5 6.4 6.0 6.1 5.9 5.0 4.8 4.9 4.7 6.1 5.2 4.8 4.3 4.3

O2% 16.1 16.5 15.7 15.1 13.4 14.5 14.6 15.6 15.7 15.9 16.1 16.6 16.7 16.0 16.6 16.9 16.4 17.8

BAL% 78.9 78.4 79.6 79.6 80.1 79.1 79.4 78.2 78.4 79.1 79.1 78.5 78.6 77.9 78.3 78.3 79.3 77.8

Time 12:45 PM 10:17 AM 9:22 AM 9:47 AM 11:47 AM 11:22 AM 2:24 PM 9:39 AM 9:36 AM 10:28 AM 10:08 AM 9:28 AM 9:46 AM 10:08 AM 10:03 AM 9:46 AM 2:50 PM 8:14 AM

CH4% 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0

CO2% 1.9 2.0 2.0 2.2 2.5 2.3 2.5 2.6 2.2 1.8 2.1 2.2 2.1 2.3 2.1 1.9 2.1 2.1

O2% 18.2 17.8 18.0 18.2 17.7 18.2 17.6 18.4 18.9 18.7 18.6 18.3 18.5 19.0 18.9 19.2 18.7 19.1

BAL% 79.8 80.2 80.0 79.7 79.8 79.4 79.9 79.1 78.9 79.5 79.3 79.5 79.4 79.8 79.0 78.8 79.2 78.9


CH4% 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0

CO2% 1.9 2.4 3.0 2.9 3.2 1.9 3.0 3.0 1.6 0.9 2.7 4.8 4.4 3.4 2.6 2.0 3.5 5.0

O2% 18.1 17.2 17.1 17.6 17.0 18.5 17.0 17.8 19.2 19.4 18.0 16.2 16.4 18.0 18.6 18.9 17.3 16.4

BAL% 80.0 80.4 79.9 79.6 79.8 79.6 80.0 79.2 79.2 79.7 79.3 79.0 79.2 78.7 78.8 79.0 79.2 78.5


CH4% 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0

CO2% 4.2 4.1 4.2 4.2 4.1 4.1 4.0 4.4 4.7 4.2 4.4 4.5 4.2 4.3 4.3 4.1 4.0 4.1

O2% 15.3 15.1 15.8 15.8 15.7 15.8 15.3 15.8 16.4 16.1 16.2 16.1 16.0 16.7 16.6 16.8 16.5 16.6

BAL% 80.6 80.8 80.1 80.0 80.2 80.1 80.7 79.9 79.0 79.7 79.4 79.4 79.8 79.0 79.1 79.1 79.5 79.4


CH4% 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0

CO2% 1.8 2.2 2.8 2.6 3.5 1.8 2.2 1.9 1.4 1.9 1.7 2.1 3.3 1.4 1.1 1.3 1.3 1.5

O2% 17.6 16.9 15.6 16.0 14.5 17.8 16.3 18.1 18.2 17.6 17.8 17.2 15.9 19.2 19.3 19.1 17.9 19.0

BAL% 80.6 80.9 81.5 81.4 81.9 80.4 81.5 79.9 80.2 80.5 80.6 80.7 80.8 79.4 79.6 79.6 80.8 79.5


CH4% 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0

CO2% 4.4 4.5 4.7 5.4 5.4 5.3 5.8 6.0 5.0 3.9 4.8 5.6 5.4 5.0 4.8 4.3 5.1 5.4

O2% 15.6 15.5 14.6 14.0 13.5 14.6 13.5 14.4 15.6 15.9 15.4 14.6 15.0 16.1 16.1 16.6 15.1 16.0

BAL% 80.0 80.0 80.7 80.5 81.1 80.2 80.7 79.6 79.5 80.2 79.9 79.8 79.6 78.9 79.1 79.1 79.9 78.6


CH4% 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0

CO2% 0.2 0.2 0.2 0.2 0.1 0.2 0.1 0.2 0.3 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2

O2% 19.2 19.1 18.6 18.7 18.2 19.1 18.5 19.6 18.9 18.8 18.8 18.7 19.4 20.0 19.6 19.7 18.8 20.0

BAL% 80.7 80.7 81.2 81.1 81.7 80.7 81.4 80.2 81.0 81.0 81.0 81.1 80.4 79.8 80.1 80.0 81.0 79.6

MW‐12

MW‐1

MW‐2

MW‐3

MW‐4

MW‐5

MW‐6

MW‐7

MW‐8

MW‐9

MW‐10

MW‐11

MW‐13

MW‐14

Page 1 of 2 AKT Peerless Project No. 10281b

Table 1

Methane, Carbon Dioxide, Oxygen and Balance Gas Readings

Bald Mountain Road

Auburn Hills


Date 9/28/2015 9/29/2015 9/30/2015 10/1/2015 10/2/2015 10/5/2015 10/6/2015 10/7/2015 10/8/2015 10/9/2015 10/12/2015 10/15/2015 10/19/2015 10/22/2015 10/26/2015 10/29/2015 11/2/2015 11/5/2015 11/9/2015 11/12/2015

Time 12:50 PM 9:54 AM 10:00 AM 9:54 AM 9:54 AM 9:52 AM 9:48 AM 9:54 AM 9:50 AM 8:54 AM 9:58 AM 11:08 AM 1:24 PM 9:58 AM 9:55 AM 9:53 AM 9:54 AM 9:56 AM 10:56 AM 10:30 AM

CH4% 0.9 0.8 0.9 0.8 0.8 0.6 0.7 1.0 0.8 0.2 1.0 0.4 0.2 0.1 0.1 1.0 0.1 0.1 0.0 0.6

CO2% 8.0 7.5 7.0 7.0 7.6 5.2 5.6 8.1 5.7 2.1 10.5 4.9 7.2 1.9 2.4 10.8 3.9 4.3 5.8 9.1

O2% 11.3 12.2 13.2 13.4 12.8 15.0 14.6 12.1 14.1 18.4 8.8 14.6 11.8 18.6 17.9 9.8 16.0 14.9 13.3 11.8

BAL% 79.8 79.5 78.9 78.9 78.8 79.3 79.3 78.9 79.6 79.3 79.6 80.2 80.7 79.5 79.7 78.5 80.1 80.8 80.9 78.9


CH4% 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0

CO2% 3.9 4.2 0.8 0.9 1.4 0.1 2.2 1.6 3.5 1.1 4.4 3.2 5.9 0.8 0.6 1.3 1.0 2.5 2.8 4.0

O2% 16.3 16.1 20.2 20.3 20.0 20.7 18.7 19.4 17.1 20.0 16.2 17.5 14.9 20.1 19.9 20.0 19.3 17.7 17.7 17.0

BAL% 79.8 79.7 79.0 78.8 78.6 79.2 79.1 79.1 79.4 78.8 79.4 79.3 79.3 79.1 79.4 78.7 79.7 79.8 79.5 79.1


CH4% 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0

CO2% 0.4 0.4 0.4 0.4 0.4 0.3 0.3 0.4 0.4 0.4 0.4 0.4 0.4 0.3 0.4 0.3 0.4 0.4 0.5 0.5

O2% 19.9 19.8 20.5 20.7 20.7 20.7 20.5 20.0 20.3 20.5 20.2 20.1 19.6 20.5 20.6 20.6 19.8 20.0 19.9 2.3

BAL% 79.7 79.8 79.1 78.9 78.9 79.0 79.1 79.5 79.3 79.1 79.5 79.6 80.0 79.2 79.0 79.0 79.7 79.6 79.6 79.1


CH4% 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0

CO2% 7.6 7.8 8.2 8.2 8.3 6.4 6.4 6.4 4.7 5.9 5.8 6.0 6.0 4.6 5.6 4.0 5.1 5.3 6.9 7.2

O2% 14.8 15.0 15.3 15.2 15.5 15.7 15.9 15.8 17.2 16.4 16.2 16.5 169.2 17.4 16.8 16.8 13.1 12.7 11.5 10.6

BAL% 77.6 77.3 76.6 76.6 76.5 77.8 77.8 77.9 78.2 77.7 77.8 77.5 77.9 78.0 77.7 79.3 81.7 82.1 81.7 82.2


CH4% 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0

CO2% 5.4 4.9 5.1 6.0 6.0 5.5 4.5 4.3 4.9 4.4 5.0 4.2 5.7 3.4 3.5 5.2 2.1 3.2 4.3 6.1

O2% 16.3 16.6 17.0 17.1 17.3 16.8 17.6 17.5 17.2 17.7 17.0 17.7 16.9 18.5 18.6 15.8 18.1 16.6 15.6 13.7

BAL% 78.4 78.5 77.9 77.0 76.7 77.7 77.9 78.3 77.9 77.9 78.0 78.1 77.5 78.1 748.4 79.0 79.8 80.2 80.2 80.5


CH4% 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0

CO2% 5.7 5.8 6.2 6.5 6.4 4.9 5.0 5.5 5.6 3.6 6.1 5.2 5.9 4.0 3.7 6.4 4.0 3.7 4.3 4.8

O2% 14.7 14.8 15.3 16.1 16.2 16.6 16.7 16.2 16.3 17.6 15.6 16.8 16.4 17.5 17.4 15.4 17.2 17.3 16.0 17.5

BAL% 79.6 79.4 78.6 77.6 77.5 78.5 78.3 78.1 78.0 78.7 78.3 78.0 77.9 78.5 78.8 78.2 78.8 79.1 79.6 78.0


CH4% 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0

CO2% 6.8 7.1 7.6 7.9 7.8 6.9 7.2 7.8 7.7 6.1 7.6 6.9 7.2 5.4 5.9 7.4 5.8 5.4 6.1 5.8

O2% 13.4 13.5 13.9 14.6 14.7 14.7 14.7 14.2 14.4 15.6 14.4 15.4 14.9 16.4 16.0 14.9 16.4 16.1 15.4 15.9

BAL% 79.5 79.4 78.4 77.6 77.8 78.4 78.2 78.0 77.9 78.2 78.0 77.8 78.0 78.2 78.1 77.7 77.9 78.5 78.5 78.3


CH4% 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0

CO2% 3.9 4.0 4.7 5.0 4.7 4.5 4.8 5.0 4.8 4.1 4.4 4.0 4.0 3.2 4.5 2.4 3.5 3.6 4.6 4.1

O2% 17.2 17.2 17.7 17.6 17.8 17.5 17.2 17.0 17.3 18.0 17.6 17.9 17.9 18.6 17.8 16.9 16.7 16.7 16.2 16.6

BAL% 78.9 78.8 77.6 77.4 77.5 78.0 78.0 78.1 77.9 77.9 78.0 78.0 78.0 78.2 77.8 80.7 79.9 79.7 79.2 79.4


CH4% 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0

CO2% 1.9 1.9 2.0 1.9 1.8 1.5 1.6 1.6 1.8 1.5 1.4 1.5 1.6 1.0 1.5 1.3 1.2 1.2 1.4 0.8

O2% 19.0 19.1 19.4 19.5 19.6 19.6 19.4 19.3 19.3 19.8 19.5 19.5 19.3 20.0 19.6 19.5 19.0 19.3 19.2 20.0

BAL% 79.1 79.0 78.6 78.6 78.6 78.9 79.0 79.0 78.9 78.6 79.0 79.0 79.1 79.0 78.9 79.2 79.7 79.5 79.3 79.2


CH4% 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0

CO2% 3.9 3.8 3.4 3.2 3.4 3.1 3.5 2.9 2.9 2.7 3.7 1.9 3.5 1.6 0.9 1.1 0.6 2.0 1.9 4.4

O2% 17.2 17.5 18.2 18.5 18.2 18.2 18.0 18.4 18.5 18.7 17.7 19.0 17.9 19.4 20.1 19.4 19.7 18.9 18.8 17.0

BAL% 78.9 78.8 78.4 78.3 78.3 78.7 78.5 78.7 78.6 78.6 78.6 79.0 78.6 79.0 79.0 79.5 79.7 79.1 79.3 78.6


CH4% 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0

CO2% 4.0 4.0 4.3 4.6 4.8 4.2 4.3 4.6 4.5 3.3 4.4 4.1 4.8 3.4 3.4 4.3 3.5 3.0 3.0 3.6

O2% 16.5 16.7 16.7 16.7 16.5 16.6 16.7 16.5 16.6 17.5 16.5 17.1 16.4 17.7 17.9 16.0 16.7 17.2 16.9 17.1

BAL% 79.5 79.4 79.0 78.8 78.7 79.2 79.0 78.9 78.9 79.1 79.0 78.8 78.7 78.9 78.7 79.8 79.8 79.8 80.1 79.3


CH4% 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0

CO2% 2.7 2.9 1.4 1.3 1.4 1.4 1.4 1.1 1.4 1.5 2.8 1.7 3.7 1.4 1.0 3.1 0.8 1.2 1.0 3.5

O2% 17.1 17.0 19.7 20.0 19.7 19.5 19.6 19.6 19.4 19.4 18.0 19.1 16.9 19.6 19.9 18.4 19.3 19.2 19.5 18.3

BAL% 80.2 80.1 78.9 78.7 78.8 79.1 79.0 79.3 79.1 79.1 79.2 79.2 79.4 79.1 79.0 78.5 79.9 79.5 79.4 78.3


CH4% 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0

CO2% 5.3 5.2 4.5 4.4 4.6 4.3 4.5 4.3 5.0 3.7 4.0 3.5 3.3 2.4 3.5 4.1 3.4 3.6 3.7 4.0

O2% 15.3 15.3 16.9 17.5 17.4 17.1 16.9 16.8 16.4 17.4 16.7 17.7 17.3 18.5 18.1 17.4 17.4 17.0 17.1 17.3

BAL% 79.4 79.5 78.6 78.2 77.9 78.7 78.6 78.9 78.6 78.9 79.3 78.8 79.4 79.0 78.5 78.5 79.2 79.5 79.2 78.7


CH4% 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.3 0.0 0.0 0.0 0.0

CO2% 0.2 0.2 0.3 0.3 0.4 0.3 0.3 0.3 0.3 0.3 0.3 0.5 0.7 0.5 0.8 1.1 0.5 0.3 0.4 0.4

O2% 19.4 19.3 20.1 20.1 20.3 20.4 20.2 19.8 19.8 20.3 19.9 19.3 18.4 19.4 19.0 14.4 19.5 19.9 19.7 20.7

BAL% 80.3 80.4 79.6 79.5 79.3 79.4 79.5 79.9 79.8 79.5 79.8 80.2 80.9 80.1 80.2 84.3 80.1 79.8 79.9 78.9

MW‐12

MW‐1

MW‐2

MW‐3

MW‐4

MW‐5

MW‐6

MW‐7

MW‐8

MW‐9

MW‐10

MW‐11

MW‐13

MW‐14


Table 2

Weather Condition Summary

Bald Mountain Road Methane Assessment

Aubun Hills, Michigan


8/31/2015 9/1/2015 9/2/2015 9/3/2015 9/8/2015 9/9/2015 9/10/2015 9/11/2015 9/14/2015 9/15/2015 9/16/2015 9/17/2015 9/18/2015 9/21/2015 9/22/2015 9/23/2015 9/24/2015 9/25/2015

General Weather

High 70s,

overcast,

warm

Low 70s,

sunny, warm

Low 70s,

sunny, warm,

humid

Mid 70s,

sunny, warm,

humid

High 70s, hot,

humid, sunny

High 60s,

overcast

High 70s,

sunny, warm

Low 60s,

partially

overcast

Low 60s,

sunny, slight

breeze

High 60s,

sunny, warm

Low 70s,

sunny, warm

High 60s,

sunny, warm

Mid 60s,

sporadic rain,

overcast

Low 60s,

sunny, windy

Low 60s,

sunny

Mid 60s,

sunny, warm

High 70s,

sunny, warm

Low 60s,

overcast,

cool

Temperature 81ᵒF 88ᵒF 77ᵒF 78ᵒF 79ᵒF 73ᵒF 77ᵒF 63ᵒF 66ᵒF 70ᵒF 74ᵒF 75ᵒF 66ᵒF 67ᵒF 74ᵒF 72ᵒF 77ᵒF 61ᵒF

Humidity 58% 48% 77% 76% 74% 69% 35% 76% 50% 59% 52% 55% 87% 49% 36% 50% 35% 97%

Barometric

Presssure

30.05 in

(1016.9 mb)

30.06 in

(1017.2 mb)

30.05 in

(1016.9 mb)

29.97 in

(1014.2 mb)

29.93 in

(1013.0 mb)

29.97 in

(1014.3 mb)

29.88 in

(1011.5 mb)

29.96 in

(1014.3 mb)

30.14 in

(1020.7 mb)

30.30 in

(1025.6 mb)

30.32 in

(1026.2 mb)

30.13 in

(1019.9.2

mb)

29.91 in

(1012.3 mb)

30.21 in

(1022.9 mb)

30.23 in

(1023.5 mb)

30.32 in

(1026.5 mb)

30.29 in

(1025.4 mb)

30.30 in

(1025.8 mb)

Dewpoint 65ᵒF 66ᵒF 69ᵒF 70ᵒF 70ᵒF 62ᵒF 47ᵒF 55ᵒF 47ᵒF 55ᵒF 55ᵒF 58ᵒF 62ᵒF 47ᵒF 45ᵒF 52ᵒF 47ᵒF 60ᵒF

24‐Hour

Precipitation0 in 0 in 0 in 0 in 0 in 0 in 0 in 0 in 0 in 0 in 0 in 0 in 0.02 in 0 in 0 in 0 in 0 in 0 in

Odors None None None None None None None None None None None None None None None None None None


Table 2

Weather Condition Summary

Bald Mountain Road Methane Assessment

Aubun Hills, Michigan


9/28/2015 9/29/2015 9/30/2015 10/1/2015 10/2/2015 10/5/2015 10/6/2015 10/7/2015 10/8/2015 10/9/2015 10/12/2015 10/15/2015 10/19/2015 10/22/2015 10/26/2015 10/29/2015 11/2/2015 11/5/2015 11/9/2015 11/12/2015

General WeatherLow 70s,

overcast

High 60s,

partly

overcast

Low 50s,

sunny, windy,

cool

Low 50s,

sunny, windy,

cool

Mid 40s,

sunny, cold,

light breeze

Mid 50s,

overcast

Mid 50s,

overcast,

misting rain,

High 50s,

sunny, slight

breeze

Low 50s,

partially

overcast

Mid 50s,

overcast,

misting rain,

High 50s,

sunny,

breezy

High 50s,

sunny,

breezy

Low 60s,

sunny, windy

Mid 50s,

partially

overcast

Mid 40s,

sunny, slight

breeze

High 30s,

sunny, very

windy

Low 50s,

sunny, light

breeze

Low 60s,

overcast

High 40s,

sunny

Mid 40s,

overcast,

windy

Temperature 72ᵒF 69ᵒF 58ᵒF 50ᵒF 48ᵒF 59ᵒF 56ᵒF 57ᵒF 54ᵒF 55ᵒF 60ᵒF 52ᵒF 62ᵒF 54ᵒF 46ᵒF 39ᵒF 56ᵒF 55ᵒF 45ᵒF 46ᵒF

Humidity 76% 84% 58% 61% 74% 90% 97% 83% 77% 83% 62% 66% 28% 77% 79% 67% 67% 100% 71% 71%

Barometric

Presssure

30.06 in

(1017.5 mb)

29.97 in

(1014.4 mb)

30.15 in

(1020.9 mb)

30.31 in

(1026.6 mb)

30.39 in

(1029.3 mb)

30.21 in

(1023.2 mb)

30.15 in

(1021.0 mb)

30.11 in

(1019.5 mb)

30.11 in

(1019.6 mb)

29.94 in

(1013.7 mb)

29.61 in

(1002.2 mb)

29.93 in

(1013.9 mb)

30.12 in

(1020.3 mb)

30.19 in

(1022.3 mb)

30.44 in

(1031.5 mb)

29.50 in

(999.4 mb)

30.04 in

(1017.3 mb)

30.11 in

(1019.4 mb)

30.33 in

(1027.8 mb)

29.34 in

(993.9 mb)

Dewpoint 64ᵒF 64ᵒF 43ᵒF 37ᵒF 40ᵒF 56ᵒF 55ᵒF 52ᵒF 47ᵒF 50ᵒF 47ᵒF 41ᵒF 28ᵒF 47ᵒF 40ᵒF 29ᵒF 45ᵒF 55ᵒF 36ᵒF 37ᵒF

24‐Hour

Precipitation0 in 0 in 0.19 in 0 in 0 in 0.03 in 0 in 0 in 0 in 0.10 in 0 in 0 in 0 in 0.25 in 0 in 0.47 in 0 in 0 in 0 in 0.32 in

Odors None None None None None None None None None None None None None None None None None None None None


Notice of Public Meeting Hosted by the Planning Commission

and Brownfield Redevelopment Authority

Meeting Date, Time, and Location:

Tuesday, December 8, 2015 at 7:00 p.m. City of Auburn Hills Robert W. Grusnick Public Safety Building (Police/Fire) 1827 N. Squirrel Road, Auburn Hills, MI 48326

Meeting Purpose: Methane Gas Investigation Update from the Michigan Department of Environmental Quality (MDEQ) and City Environmental Consultant regarding methane gas testing on and around property located at the southeast corner of Dutton Road and Bald Mountain Road (Sidwell No. 14-01-100-028). The following is a summary: 14 monitoring wells were installed in June 2015. Sampling occurred on 40 days between June and November 2015. The MDEQ Action Level is 1.25% (by volume) in soil gas. Corrective action

may be required when readings exceed this level. To date, sampling activities have not identified concentrations of methane

above the MDEQ action level. It should be noted that the presence of methane is common in some soils.

Methane was detected in every reading (40 samples) in one monitoring well on the site shown in the map below (Sidwell No. 14-01-100-028), but concentrations never reached the MDEQ action level.

Four wells had one-time readings over 0.0%, but concentrations in those samples did not reach the MDEQ action level.

Monitoring will continue until February 2016 and may be extended if deemed necessary by the MDEQ.

City Staff Contacts: Stephanie Carroll, Manager of Business Development & Community Relations

Steve Cohen, Director of Community Development 248-370-9400

Notice will be sent via U.S. Mail to properties within 1,000 feet of the site under investigation. All interested persons are encouraged to attend. Anyone planning to attend the meeting who has need of special assistance under the Americans with Disabilities Act (ADA) is asked to contact the City Clerk's Office at 248-370-9402 or the City Manager's Office at 248-370-9440 - 48 hours prior to the meeting. Staff will be pleased to make the necessary arrangements.

Location Map

SITE

I

1827 N. Squirrel Road Auburn Hills, MI 48326

June 12, 2015

RE: Methane Gas Investigation - Dutton / Bald Mountain Area Update - Well Installation Dear Property Owner, As a follow-up to the public informational meeting held on May 12, 2015, the City of Auburn Hills wishes to inform you that, weather permitting, a subcontractor is scheduled to drill 14 subsurface monitoring wells between June 24th and June 26th in the approximate locations shown on the map below. Miss Dig utility staking is anticipated to occur about one week prior to the drilling.

Drilling Rig Approximately - 6 ft. tall and 9 ft. wide

Typical Well Installation Note: The well casing will be a cylinder in shape

(shown to the right), not square

Map of the Approximate Monitoring Well Locations 3 ft. above ground (2 ft. in front of the homes on Bald Mountain) and 20 ft. below the surface

- See Reverse Side -

of 2 Methane Gas Investigation - Dutton / Bald Mountain Area Update - Well Installation As a recap, the purpose of this investigation is to evaluate the source and extent of potential migration of methane gas documented at the southeast corner of Dutton and Bald Mountain Roads in late 2014. It is the goal of the City of Auburn Hills to investigate this issue thoroughly and to effectively communicate its findings with the public. Over the next six months to one year, environmental testing is anticipated to occur in the vicinity to determine the extent of gas migration in different weather conditions (summer, fall, and winter). A second public information meeting will be hosted by the City once adequate data on the wells can be analyzed in consultation with the Michigan Department of Environmental Quality. The date of that meeting is uncertain at this time. Please note that experts believe this situation is not dangerous, but should be studied to better understand what conditions exist, locate the source of the methane, and determine if any remedial action is required to ensure safety. If you should have any questions or comments about this investigation, please feel free to contact me via phone at (248) 364-6941 or e-mail at [email protected]. Sincerely, Steven J. Cohen, AICP, PCP Director of Community Development

CITY OF AUBURN HILLS JOINT MEETING OF THE

PLANNING COMMISSION AND BROWNFIELD REDEVELOPMENT AUTHORITY

MINUTES May 12, 2015

1. CALL TO ORDER: Planning Commission Chairperson Ouellette called the meeting to order at 7:03 p.m. 2. ROLL CALL OF PLANNING COMMISSION: Present: Beidoun, Mendieta, Mitchell, Ochs, Ouellette, Pierce, Shearer Absent: Hitchcock, Justice 3. ROLL CALL OF BROWNFIELD DEVELOPMET AUTHORITY: Present: Capen, Douglas, Hawley, Knight Absent: Soltess Also Present: Community Development Director Cohen, Assistant City Planner Keenan, Manager

of Business Development and Community Relations Carroll, Assistant Fire Chief Macias, Fire Inspector Boyce, City’s Brownfield Consultant Jamieson-Urena

Guests: 31 LOCATION: Robert W. Grusnick Public Safety Building, 1827 N. Squirrel Road, Auburn Hills, MI 48326 4. METHANE GAS PRESENTATION Ms. Jamieson-Urena provided the history of the site located in the general area of Dutton Road between Lapeer Road and Bald Mountain Road. The property at one time was the location of the Sanicem Landfill, which closed in 1978 as a result of improper management and maintenance. In 2002 the property was purchased by a private development company. The City worked with the developer to help repurpose the site for light industrial and commercial uses. In 2003 to the present time various environmental engineering measures were taken by the developer to assure that the methane and leachate were properly managed. In 2003 the site began to develop with the construction of light industrial and commercial buildings. Methane is the lightest of all hydro carbons and dissipates rapidly in the air. It’s a colorless, odorless flammable gas that is widely distributed in nature and the atmosphere. Methane is not considered a toxic gas. Leachate from the site is collected and discharged into the sanitary system and sent to the Detroit Water and Sewage Department facility for proper treatment. Sometime around 2005 to 2006 a methane venting system was installed on the site to address the landfill gas generated on the site. Typically fifty-percent of the gas generated from a landfill is methane and fifty-percent is carbon dioxide. Landfill gases can be affected by wind, landfill cover type, moisture, temperature, drains, trenches and pipelines. The reason and purpose for this meeting is that in October 2014 the firm working for the developer of the site owned by Kensington Church site was conducting an assessment of the property to determine if there were any elevated levels of methane on the site and help determine if the adjacent property owner, Rochester Soccer Club, needed to take any measures for their small restroom/storage building. The findings from the report indicated that there was a possible increase level of methane on the Kensington site from 2006 levels. Once the City became aware of the possible elevated methane level from the developers report, the City is initiating additional steps to confirm the findings from the developers report, determine if the methane is migrating off site, and inform citizens in the surrounding area about the current findings and actions to be taken by the City. The City will be conducting its own assessment which will be implemented by the City’s brownfield consulting firm, AKT Peerless, to investigate the methane levels and to help determine if methane is migrating off site. The plan calls for installing a number of temporary monitoring wells along Bald Mountain that will reach about twenty feet below and three feet above grade.

Joint Meeting of the Planning Commission and Brownfield Development Authority – May 12, 2015 Page 2 of 7 Chairman Ouellette asked if members of the Planning Commission and Brownfield Development Authority had any questions. Councilperson Knight asked if the proposed test wells are located far enough south. Ms. Jamieson-Urena indicated that there is no evidence at this time that the methane has migrated off-site in a southern direction along Bald Mountain Road. It appears that it may be following the utility corridor. However, the City does plan on installing a few monitoring wells along Bald Mountain Road to help determine whether or not the methane is migrating in a southerly direction, where the residential homes are located. The City’s investigation will help determine a baseline for methane level for the area south were the residential area that is if in fact methane is detected. Councilperson Knight asked if the City should install a monitoring well on the Atlas Copco site. Mr. Gregory Barrows, MDEQ Senior Geologist suggested not to jump to any conclusions since it is not confirmed that the methane detected on the Kensington site is in fact coming from the Sanicem Landfill site. Mr. Barrows indicated that the Kensington site was also the site of an Oakland County Road Commission landfill that also has the potential of generating methane. Councilperson Knight asked if the City should install a monitoring well to see if the methane is coming from the former Road Commission landfill to the east. Ms. Jamieson-Urena indicated that the test wells are being located were the highest levels of methane were identified in the developers report. That area is the focal point of the City’s initial investigation. The City is also conducting its own investigation since it does not know if the developer’s consultant’s methodology followed standard protocol. Mr. Barrows explained that the findings from the City’s investigation will help dictate if additional testing is warranted or if further testing is necessary in other locations. The area of testing may expand as a result of the City’s investigation. The MDEQ has been involved with the Sanicem landfill for a number of years. The MDEQ has not had access to the property itself for a number of years but have done investigation on the surrounding properties to the north, east, west and south. They have found methane along Premier Drive to the north where the landfill extended into Orion Township. The buildings in that area installed natural gas detention alarms. The MDEQ monitors three times a year now, now that it has a good base line and a larger data set. Findings for the Orion area indicate that methane levels continue to be high but no methane has been detected in the buildings. Ms. Jamieson-Urena stated that the building in the area have engineered systems to help prevent methane from entering the buildings. Mr. Douglas asked if the system that was once used to burn off the methane from the site was still in operation today. Mr. Barrows noted that that system has been shut down for a number of years because there were some problems with the system and the owner of the property wanted to upgrade to a passive venting system, which is currently in place and being maintained and monitored by the owner. Since the installation of the passive system the pressures of the gas have lowered. Mr. Barrows also mentioned that the leachate collection system is also being maintained and monitored by the owner. Chairperson Capen asked if they knew the concentration levels of methane found in the soils on the Kensington property. Mr. Barrows explained that the levels varied in the developers study from six to fourteen percent, by volume. That volume would be parts per million. Methane is an explosive gas. Its lower explosive level is limited to about five percent and its upper explosive level of about fifteen percent. Chairperson Capen asked if the wells will indicate the pressure or rate of migration. Mr. Barrows indicated that there is an instrument used in the field that collects data in real time that measure gas concentration in percent and it also measures pressure. So you can see if it is under pressure or not. Ms. Jamieson-Urena explained that is why the city wants to install wells and to have multiple sampling events to make sure we have representative information.

Joint Meeting of the Planning Commission and Brownfield Development Authority – May 12, 2015 Page 3 of 7 Mr. Barrows explained the need to collect multiple samples is because methane is a difficult substance to get a handle on and barometric pressure has a big effect on it. Chairperson Ouellette asked how the MDEQ conducts measurements. Mr. Barrows explained that the MDEQ has an instrument that they can use to take measurements in real time and another instrument called an FID that measures real low concentrations of gas. They also have natural gas alarms. Chairperson Ouellette inquired if the City’s testing will be used to authenticate the developer’s findings. Ms. Jamieson-Urena confirmed that the City’s investigation will be used in part to help confirm the developers findings as well as to help determine the origins of the methane. Chairperson Ouellette asked how long it would take for the results to come in and how long testing will last. Mr. Barrows confirmed that the results will be real time that will be repeated several times throughout the year in order to acquire accurate baseline data. Chairperson Ouellette inquired if the storm drains in the area will be tested. Ms. Jamieson-Urena noted that City staff have already taken readings along the storm drain line in the area a couple weeks ago, that did not raise any “red flags”. She noted that the method of sampling is not typical of those used for data collection. Mr. Knight asked that the City Council remain informed about the test results on a regular basis. Ms. Jamieson-Urena assured the City Council, Planning Commission and Brownfield Redevelopment Authority will be updated on a regular basis. Ms. Ochs asked for clarification related to the test wells that will be located in front of the residence houses within the road right-of-way. Will the wells pose any risk of possible ignition of gasses? Mr. Barrows stated that ignition of gasses from a test pipe has yet to occur anywhere. However if you had enough methane coming out of a pipe it is a possibility, it would just flare at the top point of the pipe. He indicated that it only becomes a concern when it is contained within a structure. When it’s vented it never reaches that critical concentration in the surrounding air. Mr. Barrows further explained that the pipe would be a white PCV pipe about two inches in diameter. Mr. Boguslaski 4190 Bald Mountain Road asked if any testing was done to determine if the wells needed to be located in front of the residential properties along Bald Mountain Road. Ms. Jamieson-Urena explained that the reason for the test well is to help determine if methane is migrating towards the residential properties and the only way to determine if this is occurring is to place the wells in the identified locations, determined by City Staff and City’s brownfield consultant. The well installation and testing will be conducted by the City’s brownfield consulting firm, AKT Peerless. Mr. Pierce asked how data will be collected. Mr. Barrows explained that a well will be installed and staff will go to the site and collect the data as many times as needed. Typically data collection will be collected daily at first then weekly. Mr. Beidoun asked how the baseline levels will be determined. Ms. Jamieson-Urena indicated that MDEQ testing protocol will be followed. Mr. Beidoun asked where the 2014 test samples were collected. Ms. Jamieson-Urena identified the location of the samples as being in the southwest corner of the Kensington site.

Joint Meeting of the Planning Commission and Brownfield Development Authority – May 12, 2015 Page 4 of 7 Councilperson Mitchell asked if Ms. Jamieson-Urena could elaborate on the methods used as part of the developer’s study. Ms. Jamieson-Urena explained that the methane experts at her firm were not 100 percent convinced that the methodologies were standard practice. Mr. Barrows stated that the MDEQ had questions on the instrument that was used to collect the data and that the data collected was limited to a single day which is not sufficient to make any type of determination. Mr. Mendieta inquired about the process and timeframe for the installation of the wells. Ms. Jamieson-Urena indicated the installation of all the monitoring wells would take three to four days once testing is completed, which will be determined on the test findings, the wells would be properly abandoned and removed. Mr. Ouellette opened the questioning to the public. Ms. Millan 3744 Bald Mountain Road stated that the residents were informed by the MDEQ about a similar issue related to high and explosive levels of methane at a meeting a few years ago and asked what has been done since then to address the issue. Mr. Barrows stated that there are explosive levels on the north side of the landfill. The MDEQ’s investigation on the west side of the landfill did not find any high levels of methane nor were levels high for the area were homes are located along Bald Mountain Road. The past and current property owner of the Sanicem landfill will continue to monitor on all sides of their property and the MDEQ review of the data has not indicated migration of methane off site. The new data from the 2014 study has raised some questions and why it is testing being conducted in this new area. Ms. Millan asked if there should be any concerns for people who are on well water. Mr. Barrows indicated there should be no concerns for residents along Bald Mountain Road of having methane in their water. The Oakland County Health Department is testing water from residential wells of property closer to the landfill but has not found anything unusual, except for some minor elevated levels of nitrates. Mr. Heilbrun 4260 Bald Mountain Road asked if the cap for the landfill is destroyed allowing water to penetrate into the ground were the material is located leading to decomposition thereby causing the methane. If that is the case should the cap be fixed to prevent the water from getting to the material? Mr. Barrows stated that landfill, whether they are properly constructed or improperly constructed, generates methane. However landfills that are capped and not properly maintained, have areas that tend to act as vents, allowing methane to escape in those areas. In that regard it’s almost a plus because the methane would not migrate laterally. Mr. Heilbrun asked if a sample of the methane can help determine where it came from the Sanicem or Oakland Heights landfill. Mr. Barrows stated that methane is all the same and does not have a fingerprint as to where it originated. However, tests around the Oakland Heights landfill indicate that gas is not coming from that site. Mr. Hughes 3744 Bald Mountain Road inquired if it has been determined how far south the gas is traveling and if there are any plans for rezoning the Dutton Tech Park property to light industrial. Mr. Cohen indicated that there is a specific contract between the developer and the City that identifies specific uses that are allowed on the site, such as high tech uses or with a special land use permit certain light industrial uses. Oil and gas wells could not go on this site because it’s not allowed. The City and Planning Commission had planned on conducting an overall neighborhood study for this area but have delayed that to find out what is going on at this site. What comes out of this methane study could impact the Master Plan for this area but it’s too early to have that discussion.

Joint Meeting of the Planning Commission and Brownfield Development Authority – May 12, 2015 Page 5 of 7 Mr. Barrows stated that the current information collected does indicate that the methane is traveling south. The extent of the investigation will be dependent upon the findings of the initial test data and the determination whether or not monitoring needs to extend further south. Chairperson Ouellette indicated that the City can develop a method of keeping the residents up to date on the test results. Councilperson Kittle 4027 Hillsdale asked for clarification on the location of the old Oakland County Road Commission landfill site. Ms. Jamieson-Urena explained that some of the waste from the County landfill was transported to the Sanicem landfill when it was open. Nothing was deposited in the southwest portion of the Kensington site. Mr. Ferraiuolo 4234 Bald Mountain Road asked if the detection of methane gas on the Kensington parcel dictates a rezoning of the property from residential to commercial use. Chairperson Ouellette indicated it could lead to a rezoning request because it could be difficult to acquire financing to build a house. Ms. Ferraiuolo 4234 Bald Mountain Road inquired if there are any precautions they can take to assure safety. Mr. Barrows stated that the MDEQ agreed to provide gas alarms to the residents of the five homes located on Bald Mountain Road, south of the Kensington site. He mentioned he has some on hand to distribute to the home owners after the meeting. Mr. Barrows explained the alarms are set to go off at 19 percent LDL which is a one a percent methane level, long before the concentrations reach the explosive level. If the alarm goes off, residents should leave the house immediately and call the Fire Department when they are outside the house. The residents should remain a good distance from the house. Mr. Boyce confirmed that if the alarm goes off you should vacate the house and call 911 when you are outside the house. The fire department would respond and use their equipment to help determine if gas is present in the house. Fire Department equipment is set to go off at ten percent of the LDL. We would use similar procedures as if your carbon monoxide alarm goes off. Ms. Ochs inquired how information would be disseminated to the residents. Mr. Cohen explained that we would use a similar format as today’s meeting where we could provide the information to the residents and they could ask questions. We could also post some information on the Community Development Departments blog. Councilperson Knight informed the residents that the City will follow up in a positive way to assure they know what is going on because it is important to the residents. Mr. Heilbrun asked who was going to install and monitor the wells Mr. Barrows stated that the installation and monitoring will be conducted by the City’s brownfield consultants, AKT Peerless and the MDEQ will be kept apprised of the results. Ms. Jamieson-Urena explained that her company works directly for the City not for the private developer. Mr. Sparkman from Ajax Paving 4879 Bad Mountain Road Orion Twp. asked if any testing had occurred on the Ajax Paving property since elevated methane levels were reported around Premier Drive. Mr. Barrows stated that testing has been done along that area but the MDEQ has not gone onto the Ajax Paving property. Mr. Sparkman asked if the elevated levels were something Ajax Paving should be concerned with. Mr. Barrows explained that the elevated levels were found on the west side of Premier Drive, which would be west of the Ajax Paving property, and west of the development in Orion Township where the landfill material is located. That is the area where the higher concentration of gas were detected. Off of the landfill property there hasn’t been a lot of migration.

Joint Meeting of the Planning Commission and Brownfield Development Authority – May 12, 2015 Page 6 of 7 Mr. Boguslaski 4190 Bald Mountain Road asked how many properties to the south of the Kensington site will have testing take place. Ms. Jamieson-Urena stated just two properties. Mr. Barrows stated that the area of testing may expand depending upon the results of the initial testing. Ms. Jamieson-Urena explained that if high levels of gas is detected on the second property south of the Kensington site, that new testing wells would be installed further south on Bald Mountain Road. Ms. Heilbrun asked if the gas extraction site on the north side of Dutton Road would be an area for testing. Mr. Keenan explained that the gas extraction well closed in 2013 because it was no longer producing gas. Mr. Sparkman confirmed that the extraction well was located on the Ajax Paving property closed in 2013. Mr. Beidoun inquired that once the baseline is established, who makes the decision on the next steps. Mr. Barrows stated that the MDEQ would work with the City and the City’s brownfield consultants to come up with a recommendation. Mr. Beidoun asked who might be liable for this situation. Mr. Barrows indicated that Mr. Fons, the former owner of the landfill, who the MDEQ went to court with, would be liable but they were found insolvent. Mr. Beidoun inquired if the State then would cover the costs. Mr. Barrows explained that if the gas is detected in existing structures, not future structures, the State could possibly step in and make the decision to do something. That would include residential structures. Mr. Douglas asked if the MDEQ monitored the closing of the gas extraction well that was located on the Ajax Paving site. Mr. Barrows indicated that the MDEQ’s Geological Survey Division and Public Services Commission would have monitored the decommissioning of the well to assure it was done correctly. Ms. Ochs asked if the City has any obligation to rezone the Kensington site based on the high concentrations of methane gas on the site. Chairperson Ouellette indicated that that is a land use question that would be addressed during the revisiting of the neighborhood master plan for the north east corner. That process would include a public meeting to get feedback from the residents. As to the City having any obligation to the owner of the property, no the City would have no obligation to the owner. Mr. Keenan confirmed the City would have no obligation to rezone the property. Mr. Boguslaski asked if it would be prudent for him to have his own testing done on his property, since the last monitoring well is located in front of the property just north of his, or if he should wait for the monitoring results. He noted that his property is about 10 feet lower than his neighbor’s property to the north. Ms. Jamieson-Urena indicated she would discuss the option with her technical team. She also explained that the well would be placed in the road right-of-way not on the private property. Mr. Boguslaski expressed his concern that the MDEQ is not confident in the company that completed the 2014 testing. Ms. Jamieson-Urena clarified that her firm, AKT Peerless, works for the City and was not the third party company involved in the 2014 testing conducted by the property owner of the Kensington site. The company that conducted the 2014

Joint Meeting of the Planning Commission and Brownfield Development Authority – May 12, 2015 Page 7 of 7 testing was not present at the meeting today. She further explained that her company is not assured that the company that conducted the test used proper testing protocol. Mr. Boguslaski asked why not locate the new test wells further south along Bald Mountain Road, if there is no confidence in the testing that was completed by the third party. Ms. Jamieson-Urena indicated that there is no data that would justify installing a monitoring well further south. Mr. Barrows explained that the 2014 test indicted high levels only in the southwest corner of the Kensington property. Mr. Capen noted that if a resident still has a concern there are natural gas alarms you could purchase from a store like Home Depot. Mr. Knight asked if a well could be installed on a private property if the owner gave permission to do so. Mr. Barrows indicated that that could be a possibility if the tests indicate the gas is migrating south and towards the house. It would be prudent to get an access agreement from the property owner to conduct further testing. Ms. Ochs asked if methane is a natural element commonly found in the environment. Ms. Jamieson-Urena indicated it is not uncommon to find methane in the environment. Mr. Barrows stated that methane is commonly found in wetland areas, peat marshes, and things of that nature that produce methane at higher concentrations. It’s in the air at about a one percent concentration. 5. ADJOURNMENT The meeting was adjourned at 8:27 p.m. Respectfully Submitted, Shawn Keenan

JOINT MEETING OF THE PLANNING COMMISSION AND BROWNFIELD REDEVELOPMENT AUTHORITY

May 12, 2015

CURRENT LAND USE

FORMER SANICEM LANDFILL

• Property: 145 acres– Landfill: 70 acres

• Approx. 7,000 – 8,000 CY of waste disposed daily between1964 –1978– Closed June 7, 1978 due to

improper maintenance and operation of the landfill

FORMER SANICEM LANDFILL

• 2002 the property was acquired

• 2003 - Present: Various environmental engineering measures taken to address methane and leachate production from the historic landfilling operations

• Commercial and light industrial buildings constructed between 2003 to Present

“METHANE 101”

METHANE 101

• Methane is the lightest of all hydrocarbons and diffuses rapidly in air

• It is a colorless, odorless, flammable gas

• Methane is widely distributed in nature and the atmosphere and is not toxic

Diagram Source: Utah State University

Photo Source: www.apkmodgame.net

Landfill Gas (LFG) • 50% methane• 50% carbon dioxide• Non-methane organic

compounds

LFG Migration Affected by• Wind• Landfill cover type• Moisture• Temperature• Drains, trenches, pipelines

FINDINGS AS OF 2014• Methane gas recently

identified at the SE corner of Dutton Road and Bald Mountain Road

• Increase in detectable levels since 2006

Methane Investigation:

Installation & Sampling of 14 Wells

• Wells will extend 20 feet BG and 3 feet AG

THANK YOU!Anne Jamieson

Senior Project [email protected]

www.aktpeerless.com

248-615-1333

Notice of Public Meeting

Hosted by the Planning Commission and Brownfield Redevelopment Authority

Meeting Date, Time, and Location:

Tuesday, May 12, 2015 at 7:00 p.m. City of Auburn Hills Robert W. Grusnick Public Safety Building (Police/Fire) 1827 N. Squirrel Road, Auburn Hills, MI 48326

Meeting Purpose: Methane Gas Presentation Advisement of planned investigation to delineate the extent of methane gas recently identified by a third party consultant at the property located at the southeast corner of Dutton Road and Bald Mountain Road (Sidwell No. 14-01-100-028). The reason for the investigation is to evaluate the potential source area based on the recent findings of increased methane gas readings in subsurface wells being documented at the above referenced property

City Staff Contact: Steve Cohen, Director of Community Development - 248-364-6941

Notice will be sent via U.S. Mail to properties within 1,000 feet of the site under investigation. All interested persons are encouraged to attend. Anyone planning to attend the meeting who has need of special assistance under the Americans with Disabilities Act (ADA) is asked to contact the City Clerk's Office at 248-370-9402 or the City Manager's Office at 248-370-9440 - 48 hours prior to the meeting. Staff will be pleased to make the necessary arrangements.

Location Map

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