Future and Past Committee Members

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2026

S - Soils Certifying Board - Pennsylvania

Chair
Hostrander, Matthew C.

Member
Bourgault, Rebecca R.

Member
Callahan, Michael Paul

Member
Drohan, Patrick J.

Member
Losco, Russell L.

Member
Plowden, Yuri Kusuda

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2025

S - Soils Certifying Board - Pennsylvania

Chair
Hostrander, Matthew C.

Member
Bourgault, Rebecca R.

Member
Callahan, Michael Paul

Member
Drohan, Patrick J.

Member
Losco, Russell L.

Member
Plowden, Yuri Kusuda

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2024

S - Soils Certifying Board - Pennsylvania

Member
Bourgault, Rebecca R.

Member
Callahan, Michael Paul

Member
Chibirka, John D.

Member
Drohan, Patrick J.

Member
Losco, Russell L.

Member
Plowden, Yuri Kusuda

Chair
Hostrander, Matthew C.

Chair
Hostrander, Matthew C.

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2023

S - Soils Certifying Board - Pennsylvania

Member
Bourgault, Rebecca R.

Member
Callahan, Michael Paul

Member
Chibirka, John D.

Member
Drohan, Patrick J.

Member
Losco, Russell L.

Member
Plowden, Yuri Kusuda

Chair
Hostrander, Matthew C.

Chair
Hostrander, Matthew C.

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2022

S - Soils Certifying Board - Pennsylvania

Member
Bourgault, Rebecca R.

Member
Callahan, Michael Paul

Member
Chibirka, John D.

Member
Drohan, Patrick J.

Member
Losco, Russell L.

Member
Plowden, Yuri Kusuda

Chair
Hostrander, Matthew C.

Chair
Hostrander, Matthew C.

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2021

S - Soils Certifying Board - Pennsylvania

Member
Bourgault, Rebecca R.

Member
Callahan, Michael Paul

Member
Chibirka, John D.

Member
Drohan, Patrick J.

Member
Losco, Russell L.

Member
Plowden, Yuri Kusuda

Chair
Hostrander, Matthew C.

Chair
Hostrander, Matthew C.

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