Hydrological Solutions, Inc.

Form 5500

HSI SERVICES, INC.

20581 Fm 362, Waller, Tx 77484 (936) 372-1222 EIN:76-0514932 Plan Admin:Julie Miller

Year	Plan Name	Participants BOY/EOY	Assets BOY/EOY
2023	Plan NameHSI SERVICES, INC. 401(K) PROFIT SHARING PLAN Plan #001 Participants BOY/EOY12 / 15 Assets BOY/EOY$1,103,770 / $1,333,355	2023	HSI SERVICES, INC. 401(K) PROFIT SHARING PLAN - Plan #001	12 / 15	$1,103,770 / $1,333,355
2022	Plan NameHSI SERVICES, INC. 401(K) PROFIT SHARING PLAN Plan #001 Participants BOY/EOY13 / 10 Assets BOY/EOY$1,318,587 / $1,103,770	2022	HSI SERVICES, INC. 401(K) PROFIT SHARING PLAN - Plan #001	13 / 10	$1,318,587 / $1,103,770
2021	Plan NameHSI SERVICES, INC. 401(K) PROFIT SHARING PLAN & TRUST Plan #001 Participants BOY/EOY13 / 12 Assets BOY/EOY$1,489,243 / $1,318,587	2021	HSI SERVICES, INC. 401(K) PROFIT SHARING PLAN & TRUST - Plan #001	13 / 12	$1,489,243 / $1,318,587
2020	Plan NameHSI SERVICES, INC. 401(K) PROFIT SHARING PLAN AND TRUST Plan #001 Participants BOY/EOY12 / 13 Assets BOY/EOY$1,244,893 / $1,489,243	2020	HSI SERVICES, INC. 401(K) PROFIT SHARING PLAN AND TRUST - Plan #001	12 / 13	$1,244,893 / $1,489,243
2019	Plan NameHSI SERVICES, INC. 401(K) PROFIT SHARING PLAN AND TRUST Plan #001 Participants BOY/EOY11 / 12 Assets BOY/EOY$972,990 / $1,244,893	2019	HSI SERVICES, INC. 401(K) PROFIT SHARING PLAN AND TRUST - Plan #001	11 / 12	$972,990 / $1,244,893