Langdon Environmental LLC 241 Boston Post Rd., West 1st Floor

Marlborough, Massachusetts 01752

April 4, 2016

Ms. Susan Ruch

Deputy Regional Director

Massachusetts Department of Environmental Protection

Northeast Regional Office

205B Lowell Street

Wilmington, Massachusetts 01887

Subject: Quarterly Landfill Gas Monitoring Results – February 26, 2016 Haverhill Municipal Landfill Site

Dear Ms. Ruch:

On February 26, 2016, Cooperstown Environmental LLC personnel under subcontract to Langdon

Environmental LLC (Langdon) performed a quarterly landfill gas monitoring round at the Haverhill

Landfill in Haverhill, Massachusetts. The sampling procedure was performed in accordance with the

SW-45 permit application for the Southern Mound Landfill Gas Scope of Work dated March 24, 2014

(2014 SOW) as presumptively approved by the Massachusetts Department of Environmental

Protection (MassDEP). As required by MassDEP in the April 13, 2012 permit approving the removal of

the solar flares from the Southern Mound vents, the passive gas vents installed throughout the

Southern Mound were also sampled for methane.

Summary of Monitoring Program Figure 1 attached from the 2014 SOW shows the location of the sampling locations for the landfill gas

monitoring program. Note that well location CDM 11/11A could not be located again during this

round as was the case in December 2015. Vent #13 and CDM-5/5D are located closest to this well

cluster and are considered representative of conditions in the CDM 11/11A area at the property line.

It is possible that soil from over the landfill cap has covered these wells but they can no longer be

located, even with the limited winter vegetation.

Procedures and equipment for the sampling program were conducted in accordance with the

MassDEP standard methods as used during prior monitoring rounds.

Landfill Gas Monitoring Results The results from the landfill gas monitoring wells and probes are summarized in the attached Table 1

and the results for the passive vents within the capped Southern Mound are provided in Table 2. Both

initial and final readings are presented for the monitoring wells and probes. The following is a

summary of the results of the February 2016 round compared to prior sampling events:

Ms. Susan Ruch

MassDEP – Northeast Regional Office April 4, 2016

Page 2

Notifications – During the February 2016 round, there were no exceedances of 25 percent of the Lower Explosive Limit (LEL) in property line monitoring wells that require

24-hour notification to MassDEP in accordance with 310 CMR 19.132(4)(h).

Results along the Southern Compliance Boundary and Lot 26 – There were very low levels of methane (0.2% or less) detected in some of the wells located along the southern

property line compliance boundary including CDM-2R, CDM-4A, CDM-5D, CDM-6A/6D,

CDM-7/7D, which are located between the Southern Mound and the homes along Old

Groveland Road. The remaining vents installed at the limit of the Southern Mound (Vents

3-22) also were monitored and methane was detected only at Vent 5 (0.1% methane),

Vent 8 (0.2% methane and 1% of the LEL, and Vent 13 (0.1% methane). Because there

were only very low levels of methane detected wells and vents along the southern

compliance boundary including 0% LEL at CDM-4/4A, temporary probes SGP-4/4A were

not installed and sampled during this round.

Results along the West/Wetlands Compliance Boundary - Two landfill gas monitoring wells (CDM-1 and CDM-13) and four temporary landfill gas probes (SGP-1, SGP-2, SGP-3,

and SGP-21) were sampled to assess soil gas conditions along the western compliance

boundary including the western side of the National Grid right-of-way. These locations

were sampled for compliance with the 2014 SOW. Methane was not detected in initial or

final readings at any of the wells or probes along the western compliance boundary

during the February 2016 sampling event.

Results in Passive Gas Vents- Passive gas vents were monitored for methane. As shown in Table 2, methane was detected in 35 of the 39 passive vents installed during Southern

Mound construction.

Summary The results of the February 2016 round were similar to the past several quarterly sampling rounds and

continue to demonstrate control of lateral landfill gas migration, particularly along the southeastern

property line. This suggests that the passive gas vent system installed as part of Southern Mound

closure continues to work as designed.

Since there is adequate monitoring well coverage at the property line in the vicinity of the CDM-10

and CDM-11 monitoring wells that cannot be located, Langdon will prepare an SW-45 permit

application for submission to MassDEP to request the removal of these locations from the ongoing

monitoring program. We intend on submitting this permit application to MassDEP prior to completion

of the next gas monitoring well (May 2016).

Signed copies of the certifications from the site owners required by the MassDEP Solid Waste

Management Regulations (310 CMR 19.000) are attached.

Ms. Susan Ruch

MassDEP – Northeast Regional Office April 4, 2016

Page 3

We appreciate your attention to this project and review of this request. Do not hesitate to contact me

at (508) 630-0351 or (617) 875-3693 if you have any questions or require anything further on this

matter.

Very truly yours,

Bruce W. Haskell, P.E.

Langdon Environmental LLC

cc: Janet Waldron – MassDEP Rick Spieler, MassDEP Derrick Golden – EPA Robert Ward – Haverhill Water/Wastewater Joel Nickel – Aggregate Industries Michael Leon, Esq. – Nutter, McClennen & Fish, LLP Gary Gill-Austern, Esq. – Nutter McClennen & Fish, LLP Jeanne Westervelt, Cooperstown Environmental

G r o v e l a nd H a v e r h i l l

G r o v e l a n d

H a v e r h i l l

a n d R o ad

l e v o r

d G l O

n i M a S t r e et

Y e m m a R o a d

Merrimack River

JohnsonCreek

National Grid

Substation

20-ft Access Easement

60-ft Electric Easement

Southern Mound

Northern Mound

0 150 300

Scale In Feet

600

L E G E N D

Landfill (approximate)

Property Boundaries

House

Municipal Boundary

Edge of Wetlands Approved by Haverhill Conservation Commission (2010)

Approximate Limits of Ash

Proposed Landfill Gas Compliance Boundary

Existing Landfill Gas Monitoring Well

Proposed Landfill Gas Monitoring Well

Existing Soil Gas Probe Location

Proposed Soil Gas Probe Location

N a t i o n a l G r id

(capped)

Approx. Location of Stormwater

Basin

Quonset Hut

SGP-1

SGP-21

SGP-2

SGP-3

SGP-4

SGP-4A

CDM-13

CDM-2

CDM-1

CDM-12

CDM-7

CDM-7M/7D

CDM-3

CDM-5

CDM-5D CDM-6D

CDM-6/6A

CDM-10/10A CDM-11/11A

CDM-4/4A

Haverhill Municipal LandfillFigure 1 Haverhill, MassachusettsLandfill Gas Compliance Boundary Northern Mound CAAA

Prepared by:and Assessment Phase Landfill Gas Monitoring Network

    

  

 

    

Table 1 Landfill Gas Monitoring Results Monitoring Wells and Probes

Interim Monitoring ‐ February 26, 2016 Haverhill Landfill, Haverhill, Massachusetts

Monitoring Location

Methane (% vol.)

LEL (% vol.)

CO2 (% vol.)

O2 (% vol.)

H2S (ppm)

VOCs (ppm)

Atomospheric Pressure (in Hg)

Initial Final Initial Final Initial Final Initial Final Initial Final Initial Final Initial Final CDM‐1 0 0 0 0 0.1 0.2 20.2 20.1 0 0 0 0.1 29.42 29.42 CDM‐2R 0.1 0 0 0 0.3 0 20.3 20.2 0 0 0 0 29.42 29.42 CDM‐3 0 0 0 0 0.1 0.1 20.1 20.4 0 0 0.1 0 29.42 29.42 CDM‐4 0 0 0 0 0.1 0.2 20.6 20.3 0 0 0.1 0.1 29.42 29.42 CDM‐4A 0.1 0.1 0 0 0.3 1.1 19.9 20.1 0 0 0 0 29.42 29.42 CDM‐5 0 0 0 1 0.1 0.2 20.1 20.1 0 0 0 0 29.42 29.42 CDM‐5D 0.3 0 0 0 0.1 0.1 20.2 20.1 0 0 0 0.1 29.42 29.42 CDM‐6 0 0.2 0 1 0.2 0.1 20.3 20 0 0 0 0 29.42 29.42 CDM‐6A 0.1 0 0 0 0.3 0.1 20.2 20.1 0 0 0 0 29.42 29.42 CDM‐6D 0.3 0 0 0 0.1 0.1 20.2 20.1 0 0 0 0 29.42 29.42 CDM‐7 0.1 0 0 0 0.2 0.4 20.1 20.1 0 0 0 0.1 29.42 29.42 CDM‐7M 0 0.1 0 1 0.1 0.1 20.1 20.0 0 0 0 0 29.42 29.42 CDM‐7D 0.1 0.1 0 0 0 0.1 20.1 20.1 0 0 0.1 0.1 29.42 29.42 CDM‐10 4 Destroyed CDM‐10A 4 Destroyed CDM‐11 5 Not Located CDM‐11A 5 Not Located CDM‐12 0 0 0 0 0.1 0.3 20.0 20.3 0 0 0 0.1 29.42 29.42 CDM‐13 0 0 0 0 0.1 0 20.1 20.1 0 0 0 0 29.42 29.42 Vent 3 6  ‐ 0 ‐ 0  ‐ 0.1  ‐ 20.1  ‐ 0 ‐ 0  ‐ 29.42 Vent 4  ‐ 0 ‐ 0 ‐ 0 ‐ 20.6 ‐ 0 ‐ 0  ‐ 29.42 Vent 5  ‐ 0.1 ‐ 0  ‐ 0.1 ‐ 21.2 ‐ 0 ‐ 0  ‐ 29.42 Vent 6  ‐ 0 ‐ 0 ‐ 0.1 ‐ 20.2 ‐ 0 ‐ 0.1  ‐ 29.42 Vent 7  ‐ 0 ‐ 0 ‐ 0.2 ‐ 20.0 ‐ 0 ‐ 0.1  ‐ 29.42 Vent 8  ‐ 0.2 ‐ 1  ‐ 0.8 ‐ 19.6 ‐ 0 ‐ 0  ‐ 29.42 Vent 10  ‐ 0 ‐ 0 ‐ 0.1 ‐ 20.5 ‐ 0 ‐ 0  ‐ 29.42 Vent 13  ‐ 0.1 ‐ 0  ‐ 0.3 ‐ 20.2 ‐ 0 ‐ 0  ‐ 29.42 Vent 19  ‐ 0 ‐ 0 ‐ 0.1 ‐ 20.2 ‐ 0 ‐ 0  ‐ 29.42 Vent 20  ‐ 0 ‐ 0 ‐ 0.1 ‐ 20.8 ‐ 0 ‐ 0.1  ‐ 29.42 Vent 21  ‐ 0 ‐ 0 ‐ 0.1 ‐ 21.1 ‐ 0 ‐ 0  ‐ 29.42 Vent 22  ‐ 0 ‐ 0 ‐ 0.1 ‐ 20.1 ‐ 0 ‐ 0  ‐ 29.42 SGP‐1 0 0 0 0 0.1 0 20.6 20.7 0 0 0 0 29.42 29.42 SGP‐2 0 0 0 0 0 0.4 20.8 20.4 0 0 0 0 29.42 29.42 SGP‐3 0 0 0 0 0.1 0.1 20.1 20.2 0 0 0 0 29.42 29.42 SGP‐G21 0 0 0 0 0.2 0.2 20.6 20.6 0 0 0 0 29.42 29.42

               

  

    

  

   

      

  

  

  

 

   

Table 2 Landfill Gas Monitoring Results

Passive Gas Vents Within Capped Southern Mound Interim Monitoring ‐ February 26, 2016 Haverhill Landfill, Haverhill, Massachusetts

Monitoring Location

Methane 1 

(% vol.) LEL (% vol.)

CO2 1 

(% vol.) O2 1 

(% vol.) H2S 

2 

(ppm) VOCs 3 

(ppm)

Atomospheric Pressure (in Hg)

Initial Final Initial Final Initial Final Initial Final Initial Final Initial Final Initial Final G‐1  ‐ 0.3 ‐ 1  ‐ NM ‐ NM ‐ NM ‐ NM ‐ 29.42 G‐2  ‐ 0.7 ‐ 4  ‐ NM ‐ NM ‐ NM ‐ NM ‐ 29.42 G‐3  ‐ 7.2 ‐ >999*  ‐ NM ‐ NM ‐ NM ‐ NM ‐ 29.42 G‐4  ‐ 21.3 ‐ >999*  ‐ NM ‐ NM ‐ NM ‐ NM ‐ 29.42 G‐5  ‐ 23.8 ‐ >999*  ‐ NM ‐ NM ‐ NM ‐ NM ‐ 29.42 G‐6  ‐ 42.1 ‐ >999*  ‐ NM ‐ NM ‐ NM ‐ NM ‐ 29.42 G‐7A  ‐ 33.9 ‐ >999*  ‐ NM ‐ NM ‐ NM ‐ NM ‐ 29.42 G‐8  ‐ 11.2 ‐ >999*  ‐ NM ‐ NM ‐ NM ‐ NM ‐ 29.42 G‐9  ‐ 30.7 ‐ >999*  ‐ NM ‐ NM ‐ NM ‐ NM ‐ 29.42 G‐10  ‐ 31.5 ‐ >999*  ‐ NM ‐ NM ‐ NM ‐ NM ‐ 29.42 G‐11A  ‐ 42.2 ‐ >999*  ‐ NM ‐ NM ‐ NM ‐ NM ‐ 29.42 G‐12  ‐ 40.9 ‐ >999*  ‐ NM ‐ NM ‐ NM ‐ NM ‐ 29.42 G‐13  ‐ 45.1 ‐ >999*  ‐ NM ‐ NM ‐ NM ‐ NM ‐ 29.42 G‐14  ‐ 30.3 ‐ >999*  ‐ NM ‐ NM ‐ NM ‐ NM ‐ 29.42 G‐15  ‐ 17.1 ‐ >999*  ‐ NM ‐ NM ‐ NM ‐ NM ‐ 29.42 G‐16  ‐ 10.9 ‐ 51 ‐ NM ‐ NM ‐ NM ‐ NM  ‐ 29.42 G‐17  ‐ 11.5 ‐ 44 ‐ NM ‐ NM ‐ NM ‐ NM  ‐ 29.42 G‐18  ‐ 0.3 ‐ 5  ‐ NM ‐ NM ‐ NM ‐ NM ‐ 29.42 G‐19  ‐ 0.1 ‐ 7  ‐ NM ‐ NM ‐ NM ‐ NM ‐ 29.42 G‐20  ‐ 0.1 ‐ 1  ‐ NM ‐ NM ‐ NM ‐ NM ‐ 29.42 G‐21  ‐ 11.7 ‐ >999*  ‐ NM ‐ NM ‐ NM ‐ NM ‐ 29.42 G‐22A  ‐ 25.0 ‐ 66 ‐ NM ‐ NM ‐ NM ‐ NM  ‐ 29.42 G‐23  ‐ 0 ‐ 2 ‐ NM ‐ NM ‐ NM ‐ NM  ‐ 29.42 G‐24  ‐ 7.6 ‐ >999*  ‐ NM ‐ NM ‐ NM ‐ NM ‐ 29.42 G‐25  ‐ 0.4 ‐ 6  ‐ NM ‐ NM ‐ NM ‐ NM ‐ 29.42 G‐26  ‐ 28.3 ‐ >999*  ‐ NM ‐ NM ‐ NM ‐ NM ‐ 29.42 G‐27  ‐ 2.5 ‐ 53 ‐ NM ‐ NM ‐ NM ‐ NM  ‐ 29.42 G‐28  ‐ 33.9 ‐ >999*  ‐ NM ‐ NM ‐ NM ‐ NM ‐ 29.42 G‐29  ‐ 48.2 ‐ >999*  ‐ NM ‐ NM ‐ NM ‐ NM ‐ 29.42 G‐30  ‐ 41.0 ‐ >999*  ‐ NM ‐ NM ‐ NM ‐ NM ‐ 29.42 G‐31  ‐ 23.9 ‐ >999*  ‐ NM ‐ NM ‐ NM ‐ NM ‐ 29.42 G‐32A  ‐ 33.6 ‐ >999*  ‐ NM ‐ NM ‐ NM ‐ NM ‐ 29.42 G‐33  ‐ 0 ‐ 3 ‐ NM ‐ NM ‐ NM ‐ NM  ‐ 29.42 G‐34  ‐ 0.2 ‐ 1  ‐ NM ‐ NM ‐ NM ‐ NM ‐ 29.42 G‐35A  ‐ 4.4 ‐ 44 ‐ NM ‐ NM ‐ NM ‐ NM  ‐ 29.42 G‐36  ‐ 0.8 ‐ 2  ‐ NM ‐ NM ‐ NM ‐ NM ‐ 29.42 G‐37  ‐ 0 ‐ 1 ‐ NM ‐ NM ‐ NM ‐ NM  ‐ 29.42 G‐38  ‐ 0.1 ‐ 1  ‐ NM ‐ NM ‐ NM ‐ NM ‐ 29.42 G‐39  ‐ 0 ‐ 3 ‐ NM ‐ NM ‐ NM ‐ NM  ‐ 29.42

Notes: * Exceeds instrument limit

Certification

In accordance with the Massachusetts Solid Waste Management Regulations (310 CMR 19.011),

Aggregate Industries - Northeast Region, Inc. submits this certification for the February 2016 Quarterly

Landfill Gas Monitoring Report prepared for us by Langdon Environmental LLC.

I, Joel Nickel, attest under the pains and penalties of perjury that: (a) I have personally examined and am familiar with the information contained in this submittal, including any and all documents

accompanying this certification statement; (b) based on my inquiry of those persons responsible for obtaining the information, the information contained in this submittal is, to the best of my knowledge, true, accurate, and complete; (c) I am fully authorized to bind the entity required to submit these

documents and to make this attestation on behalf of such entity; (d) I am aware that there are

significant penalties, including, but not limited to, possible administrative and civil penalties for

submitting false, inaccurate, or incomplete information and possible fines and imprisonment for

knowingly submitting false, inaccurate, or incomplete information.

Certification

In accordance with the Massachusetts Solid Waste Management Regulations (310 CMR 19.011), the City

of Haverhill, Massachusetts submits this certification for the February 2016 Quarterly Landfill Gas Monitoring Report prepared for us by Langdon Environmental LLC.

I, Robert Ward, attest under the pains and penalties of perjury that: (a) I have personally examined and am familiar with the information contained in this submittal, including any and all documents accompanying this certification statement; (b) based on my inquiry of those persons responsible for obtaining the information, the information contained in this submittal is, to the best of my knowledge,

true, accurate, and complete; (c) I am fully authorized to bind the entity required to submit these documents and to make this attestation on behalf of such entity; (d) I am aware that there are significant penalties, including, but not limited to, possible administrative and civil penalties for

submitting false, inaccurate, or incomplete information and possible fines and imprisonment for knowingly submitting false, inaccurate, or incomplete information.

barcode: *587326*barcodetext: SEMS Doc ID 587326