The following LSPA practice tip was introduced at the April 2026 Membership Meeting, which was held via Zoom on Tuesday, April 14, 2026, from 3:45-5:00 PM.

Practice Tip  
There can be more than one LSP-of-Record for a disposal site. As defined in the MCP (310 CMR 40.0006), an LSP-of-Record is an LSP “…who has rendered an LSP Opinion [at a] site, …”  and remains as such until they provide written resignation to MassDEP. In cases where there are multiple LSPs-of-Record, it may be beneficial to coordinate activities with other parties performing response actions.  

The following LSPA compliance tip was introduced at the February 2026 Membership Meeting, which was held via Zoom on Tuesday, February 11, 2026, from 3:45-5:30 PM.

Compliance Tip  
Per the MCP (at 310 CMR 40.1074(2)(a)5.), where an Active Exposure Pathway Mitigation Measure (AEPMM) is subject to the Obligations and Conditions and other provisions of a Notice of Activity and Use Limitation (NAUL), the sketch plan attached as an exhibit to the NAUL must show the location of the AEPMM. Furthermore, MassDEP has indicated in Notices of Noncompliance that if a sub-slab depressurization system is the AEPMM, a sketch should be provided that shows the locations of suction points, underground piping/manifold piping, and sub-slab soil vapor sampling points, if they are relevant to maintaining the condition of No Significant Risk and meeting the Obligations and Conditions of the NAUL. More than one sketch, such as a sketch of the entire NAUL area and a sketch of the area with the AEPMM, may be necessary to address issues of scale if these details are included. 

The following LSPA compliance tip was introduced at the January 2026 Membership Meeting, which was held via Zoom on Thursday, January 15, 2026, from 3:45-5:00 PM.

Compliance Tip  
Under 310 CMR 40.0041(7)(h), treatment works systems must have clearly posted contact information identifying the “person to contact in the event of a malfunction in an accessible readily visible location.” In practice, this information is posted when a system is first installed, but is not always revisited during long-term system operation. Because personnel and staffing responsibilities can change over time, posted contact information should be reviewed and updated as appropriate to ensure it remains accurate and compliant.

The LSPA received the following email from MassDEP Bureau of Waste Site Cleanup on September 4, 2025: 

The newest installment of the Risk Characterization Guidance, Chapters 14 and 17, has been posted to the MassDEP MCP Amendments webpage.  The review/comment period for these chapters is 90 days, until December 5, 2025.

The following LSPA compliance tip was introduced at the November 2023 Membership Meeting, which was held remotely on November 15, 2023 via Zoom.  

Compliance Tip of the Month

The following LSPA practice tip was introduced at the June 2023 Membership Meeting, which was held in-person at the Westborough Doubletree hotel on June 20, 2023.  

Per 310 CMR 40.0006, Historic Fill cannot contain contaminants that are present as a result of on-site activities. If contaminants at a disposal site could potentially have originated from known historical operations or activities at the site, an LSP needs to first determine that contaminants are not from on-site activities before the contaminants can be attributed to Historic Fill.

The following LSPA practice tip was introduced at the February 2023 Membership Meeting, which was held virtually on February 15,  2023.  

Practice Tip of the Month: 
Administrative issues with Activity and Use Limitations (AULs) commonly result in the issuance of Notices of Noncompliance. One helpful tool for reviewing an AUL and its exhibits and assessing whether all requirements for submitting an AUL have been met, is the AUL Compliance Assistance Checklist available in Appendix I of MassDEP’s 2014 Draft Guidance on Implementing AULs.

The following LSPA practice tip was presented at the January 2023 Membership Meeting, which was held virtually through the Zoom webinar platform, on January 26, 2023.  

Compliance Tip of the Month: 
Pursuant to 310 CMR 40.1403(3)(a), notification to the Chief Municipal Officer and Board of Health of a community in which a Disposal Site is located is required when respirators or other protective clothing (Level A, B, or C Personal Protective Equipment) is used at a Disposal Site. This notification is required at least three days prior to the commencement of such field work or, if the level of protection is upgraded to Level C or above during the course of the work, as soon as practicable.

The following LSPA practice tip was presented at the December 2022 Membership Meeting, which was held virtually through the Zoom webinar platform, on December 14, 2022.  

Compliance Tip of the Month: 
Consistent with 310 CMR 40.1003(7), if all other MCP closure requirements are met, a site with NAPL may be closed with a Permanent Solution With Conditions (PSWC) following complete evaluation of the nature and extent of the NAPL, including demonstration of the following consistent with Policy #WSC-16-450:

The following LSPA practice tip was presented at the November 2022 Membership Meeting, which was held virtually through the Zoom webinar platform, on November 15, 2022.  

Practice Tip of the Month: 
The LSPA has developed a Climate Change MCP Toolkit to assist practitioners as they consider the potential effects of climate change on site assessment and response actions. This is anticipated to be required by the pending amendments to the MCP.  The toolkit includes a flowchart, checklist, two case studies, glossary, and list of resources.

The following LSPA compliance tip was presented at the May 2022 Membership Meeting, which was held virtually through the Zoom webinar platform, on May 18, 2022.  

Practice Tip of the Month: 

The following LSPA compliance tip was presented at the October 2021 Membership Meeting, which was held virtually through the Zoom webinar platform, on October 28, 2021.  

Compliance Tip:
Even if you have demonstrated that no Imminent Hazard exists and there is a condition of No Significant Risk at your site, you still need to address a Critical Exposure Pathway (CEP) if one has been identified.  As required by 310 CMR 40.0414(3)&(4), you must conduct response actions to eliminate, prevent, and/or mitigate the CEP, or submit documentation that it is not feasible to do so.  

The following LSPA compliance tip was presented at the November 2021 Membership Meeting, which was held virtually through the Zoom webinar platform, on November 17, 2021.  

Compliance Tip:
Once a Notice of Activity and Use Limitation (AUL) has been filed, the Disposal Site should be reviewed periodically to confirm that the conditions and obligations contained in the AUL are being complied with and/or maintained (310 CMR 40.1070, et seq.). MassDEP routinely performs field audits of sites with AULs, often several years after filing. LSPs should remind their clients that compliance with AUL conditions and obligations is required, and should document these reminders.

The following LSPA practice tip was presented at the September 2021 Membership Meeting, which was held virtually through the Zoom webinar platform, on September 14, 2021.  

Practice Tip - MassDEP’s Private Well PFAS Testing
MassDEP is conducting free PFAS testing for a limited number of private wells, focusing on 84 Massachusetts towns where 60% or more of residents are served by private wells. Practitioners should know about MassDEP’s Story Map which is regularly updated to present the results of this private well sampling to date.

The following LSPA compliance tip was presented at the April 2021 Membership Meeting, which was held virtually through the Zoom webinar platform, on April 15, 2021.  

Compliance Tip of the Month

The following LSPA compliance tip was presented at the December 2020 Membership Meeting, which was held virtually through the Zoom webinar platform, on December 15, 2020.  

Click here to view all published compliance tips. This document is also posted in the Members Only section of the website under Technical Resources.

Meeting Date & Location	Topic & Speaker
Wednesday, September 18, 2019  Boston Marriott Newton, Newton	Annual Kick-Off Meeting Liz Callahan and Paul Locke, MassDEP
Thursday, September 26, 2019 Hilton Garden Inn, Springfield	Environmental Law: Part 1 Jeanine Grachuk, Beveridge & Diamond 1.0 non-DEP Regulatory Credit Course #1626A
Thursday, October 17, 2019 Mechanics Hall, Worcester	Annual Dinner
October 2019 Hilton Garden Inn, Springfield	Environmental Law: Part 2 Michelle O'Brien, Pierce Atwood LLP  1.0 non-DEP Regulatory Credit Course #1626B
Thursday, November 21, 2019  Doubletree Hotel, Westborough	Topic for Credit
November 2019 Hilton Garden Inn, Springfield	Environmental Law: Part 3 Robert Cox, Bowditch & Dewey, LLP  1.0 non-DEP Regulatory Credit Course #1626C
December 2019 Downtown Boston Area	Co-Sponsor the EBC Winter Garden Party
Thursday, January 16, 2020 Doubletree Hotel, Andover	Topic for Credit Michael Marley, XDD Environmental
Wednesday, February 12, 2020 Doubletree Hotel, Westborough	Theory and Applications of ISCO Injectate Selection and In Situ Remediation Using Activated Carbon Based Injectates   Speakers from ISOTEC and AST Environmental 1.5 Technical Credits  Course #1677
Thursday, March 19, 2020 Holiday Inn, Mansfield	Topic for Credit
Tuesday, April 14, 2020  Crowne Plaza, Woburn	Topic for Credit
Tuesday, May 19, 2020 Doubletree Hotel, Westborough	Topic for Credit
Thursday, June 18, 2020 Holiday Inn, Taunton	Topic for Credit and LSPA Scholarship Presentation

The LSPA presented the following compliance tip at the April Membership Meeting at the Holiday Inn in Taunton, MA on April 23, 2019.