Top 100 Contractors in PSC F099: Other Natural Resources and Conservation Services, FY2021

Name: Top 100 Contractors in PSC F099: Other Natural Resources and Conservation Services, FY2021
Creator: GovTribe

Parent companies by net contract obligations Oct 1, 2020 – Sep 30, 2021 Code page on GovTribe

The top 10 won 50% of FY2021 PSC F099 contract dollars

Contract obligations: $168,804,288 Net of deobligations, by contracts coded PSC F099
Contractors: 429 Parent companies with an obligation
Largest contractor: Delta Land Services LLC $26.3 million, 15.0% of obligations
Data as of: Oct 14, 2026

Contract actions from FPDS (SAM.gov). How the rankings work · Download all 100 rows as CSV

Full ranking

Rank	Contractor	Net obligations	Share	Trend
1	Delta Land Services LLC Top agencies Army (Department of the Army)	$26,260,302	15.0%	Rank history: #1 in FY2022, #7 in FY2023, not on the FY2024 list and #5 in FY2025; up 17 since FY2020.
2	Tanaq-Ecm-8A JV Top agencies Army (Department of the Army)	$12,626,580	7.2%	Rank history: not on the FY2022 list, #61 in FY2023 and not on the FY2024–FY2025 lists; new, not ranked in FY2020.
3	Oneida Nation Through Sustainment & Restoration Services, LLC Top agencies Army (Department of the Army)	$8,301,813	4.7%	Rank history: #4 in FY2022 and not on the FY2023–FY2025 lists; down 1 since FY2020.
4	Hgl-Aptim JV LLC Top agencies Army (Department of the Army)	$7,790,508	4.5%	Rank history: #3 in FY2022, #14 in FY2023, #11 in FY2024 and #8 in FY2025; up 2 since FY2020.
5	Guardian Environmental Services Co Inc. Top agencies EPA (Environmental Protection Agency)	$6,788,980	3.9%	Rank history: not on the FY2022–FY2025 lists; up 6 since FY2020.
6	Hdr, Inc. 2 awardees, including HDR Environmental, Operations and Construction, Inc. Top agencies Navy (Department of the Navy)	$6,551,836	3.7%	Rank history: #9 in FY2022, #41 in FY2023, #20 in FY2024 and #7 in FY2025; down 2 since FY2020.
7	Calista Corp Through Brice Environmental Services Corporation Top agencies Army (Department of the Army)	$6,293,415	3.6%	Rank history: #6 in FY2022, #20 in FY2023, #16 in FY2024 and not on the FY2025 list; down 6 since FY2020.
8	Olgoonik Corporation Through FPM Remediations, Inc. Top agencies Army (Department of the Army)	$4,970,352	2.8%	Rank history: #10 in FY2022, not on the FY2023 list, #25 in FY2024 and #14 in FY2025; new, not ranked in FY2020.
9	Tetra Tech, Inc. 4 awardees, including Ard, Inc. and Tetra TECH EC, Inc. Top agencies USAID (US Agency for International Development) DHS (Department of Homeland Security) Army (Department of the Army)	$4,605,615	2.6%	Rank history: #2 in FY2022, #12 in FY2023 and not on the FY2024–FY2025 lists; unchanged since FY2020.
10	Buchanan Consulting Services LLC Top agencies USDA (Department of Agriculture)	$3,649,196	2.1%	Rank history: not on the FY2022–FY2025 lists; down 2 since FY2020.
11	ESP Tunica Opportunities LLC Top agencies Army (Department of the Army)	$3,086,688	1.8%	Rank history: not on the FY2022–FY2025 lists; new, not ranked in FY2020.
12	Kmea Through Patriot Joint Venture Top agencies Navy (Department of the Navy) USAF (Department of the Air Force)	$2,410,320	1.4%	Rank history: #19 in FY2022, #93 in FY2023 and not on the FY2024–FY2025 lists; down 7 since FY2020.
13	IO Environmental and Infrastructure Incorporated Top agencies Navy (Department of the Navy)	$2,252,083	1.3%	Rank history: #8 in FY2022, #98 in FY2023 and not on the FY2024–FY2025 lists; up 6 since FY2020.
14	Quicksilver Contracting Co Top agencies DOI (Department of the Interior) USDA (Department of Agriculture)	$2,099,640	1.2%	Rank history: #16 in FY2022 and not on the FY2023–FY2025 lists; up 2 since FY2020.
15	Grayback Forestry, Inc. Top agencies DOI (Department of the Interior)	$2,085,659	1.2%	Rank history: not on the FY2022–FY2025 lists; up 6 since FY2020.
16	Versar-Arcadis A Joint Venture Top agencies Army (Department of the Army)	$2,065,678	1.2%	Rank history: not on the FY2022–FY2025 lists; down 6 since FY2020.
17	Applied Aquatic Management, Inc. Top agencies Army (Department of the Army)	$1,796,799	1.0%	Rank history: not on the FY2022–FY2025 lists; up 28 since FY2020.
18	ACS Habitat Management, Inc. Top agencies Navy (Department of the Navy)	$1,697,392	1.0%	Rank history: not on the FY2022–FY2025 lists; new, not ranked in FY2020.
19	Entsorgungsbetrieb Luzia Francois GMBH Top agencies USAF (Department of the Air Force)	$1,565,608	0.9%	Rank history: #27 in FY2022, #63 in FY2023, #49 in FY2024 and #61 in FY2025; up 3 since FY2020.
20	Summitt Forests, Inc. Top agencies USDA (Department of Agriculture) DOI (Department of the Interior)	$1,529,632	0.9%	Rank history: #39 in FY2022, #18 in FY2023, #13 in FY2024 and #12 in FY2025; up 9 since FY2020.
21	Johnson Controls Security Solutions LLC Through Johnson Controls Government Systems, LLC Top agencies Army (Department of the Army)	$1,519,785	0.9%	Rank history: #29 in FY2022, #28 in FY2023, #89 in FY2024 and not on the FY2025 list; up 2 since FY2020.
22	Rehbein Enterprises Inc. Top agencies USDA (Department of Agriculture)	$1,417,642	0.8%	Rank history: #59 in FY2022, #80 in FY2023 and not on the FY2024–FY2025 lists; up 29 since FY2020.
23	Toeroek Associates, Inc. Top agencies EPA (Environmental Protection Agency)	$1,417,337	0.8%	Rank history: #58 in FY2022, #48 in FY2023, #39 in FY2024 and #23 in FY2025; down 6 since FY2020.
24	Freedom International Inc. Top agencies USDA (Department of Agriculture)	$1,394,570	0.8%	Rank history: #33 in FY2022, #56 in FY2023 and not on the FY2024–FY2025 lists; new, not ranked in FY2020.
25	Restoration Systems LLC Top agencies Army (Department of the Army)	$1,364,000	0.8%	Rank history: not on the FY2022 list, #46 in FY2023 and not on the FY2024–FY2025 lists; new, not ranked in FY2020.
26	Wood Environment & Infrastructure Solutions Inc. Through WSP E&Is GMBH Top agencies Army (Department of the Army)	$1,314,521	0.8%	Rank history: #69 in FY2022 and not on the FY2023–FY2025 lists; up 4 since FY2020.
27	Central Minority Maintenance, LLC Top agencies USDA (Department of Agriculture)	$1,239,781	0.7%	Rank history: #20 in FY2022, #45 in FY2023, #55 in FY2024 and #35 in FY2025; down 3 since FY2020.
28	DL Reforestation, Incorporated Top agencies DOI (Department of the Interior)	$1,215,676	0.7%	Rank history: not on the FY2022–FY2025 lists; up 10 since FY2020.
29	ECO & Associates, Inc. Top agencies Army (Department of the Army)	$1,201,052	0.7%	Rank history: #38 in FY2022, #67 in FY2023, #96 in FY2024 and #21 in FY2025; down 3 since FY2020.
30	Horsley Witten Group, Inc. Top agencies EPA (Environmental Protection Agency)	$1,143,712	0.7%	Rank history: #47 in FY2022 and not on the FY2023–FY2025 lists; new, not ranked in FY2020.
31	Darrah Co., Inc. Top agencies USDA (Department of Agriculture)	$1,009,675	0.6%	Rank history: not on the FY2022–FY2025 lists; new, not ranked in FY2020.
32	Live Oak Associates, Inc. Top agencies DOI (Department of the Interior)	$1,003,009	0.6%	Rank history: not on the FY2022–FY2025 lists; new, not ranked in FY2020.
33	Environmental Restoration LLC Top agencies EPA (Environmental Protection Agency)	$1,000,000	0.6%	Rank history: #66 in FY2022 and not on the FY2023–FY2025 lists; new, not ranked in FY2020.
34	Cutting Edge Forestry, Inc. Top agencies USDA (Department of Agriculture)	$944,974	0.5%	Rank history: #30 in FY2022, #57 in FY2023, #34 in FY2024 and not on the FY2025 list; new, not ranked in FY2020.
35	Environmental Science Corporation Top agencies Navy (Department of the Navy)	$831,634	0.5%	Rank history: #84 in FY2022, not on the FY2023 list, #94 in FY2024 and #100 in FY2025; up 4 since FY2020.
36	Sacramento River Ranch LLC Top agencies Army (Department of the Army)	$778,136	0.4%	Rank history: not on the FY2022–FY2025 lists; new, not ranked in FY2020.
37	DDC Construction Services LLC Top agencies Army (Department of the Army) USDA (Department of Agriculture)	$771,241	0.4%	Rank history: #49 in FY2022, #82 in FY2023, #70 in FY2024 and #39 in FY2025; down 2 since FY2020.
38	Redhorse Corporation Top agencies Army (Department of the Army)	$740,654	0.4%	Rank history: not on the FY2022–FY2023 lists, #82 in FY2024 and not on the FY2025 list; new, not ranked in FY2020.
39	Brian Bell Enterprises LLC Top agencies USDA (Department of Agriculture)	$730,226	0.4%	Rank history: #100 in FY2022 and not on the FY2023–FY2025 lists; up 91 since FY2020.
40	Mmi-2 International Research, LLC Top agencies USDA (Department of Agriculture)	$696,264	0.4%	Rank history: #46 in FY2022, #78 in FY2023, not on the FY2024 list and #70 in FY2025; up 7 since FY2020.
41	High Sierra Tree Company Inc. Top agencies USDA (Department of Agriculture)	$676,324	0.4%	Rank history: #13 in FY2022, #23 in FY2023 and not on the FY2024–FY2025 lists; new, not ranked in FY2020.
42	Baker Timber Products, Inc. Top agencies USDA (Department of Agriculture)	$673,999	0.4%	Rank history: #57 in FY2022, #40 in FY2023 and not on the FY2024–FY2025 lists; new, not ranked in FY2020.
43	Mid Dakota Vegetation Management, LLC Top agencies USDA (Department of Agriculture)	$643,163	0.4%	Rank history: #55 in FY2022 and not on the FY2023–FY2025 lists; up 6 since FY2020.
44	Emission Advisors, Inc. Top agencies Army (Department of the Army)	$632,640	0.4%	Rank history: not on the FY2022–FY2025 lists; new, not ranked in FY2020.
45	Umpqua Valley Forestry, Inc. Top agencies DOI (Department of the Interior)	$615,453	0.4%	Rank history: #35 in FY2022 and not on the FY2023–FY2025 lists; up 7 since FY2020.
46	Orange Springs Construction, Inc. Top agencies USDA (Department of Agriculture)	$562,040	0.3%	Rank history: not on the FY2022–FY2023 lists, #60 in FY2024 and not on the FY2025 list; new, not ranked in FY2020.
47	Island ECO Services LLC Top agencies Navy (Department of the Navy) DOI (Department of the Interior)	$553,954	0.3%	Rank history: not on the FY2022–FY2025 lists; up 54 since FY2020.
48	Nordstrom Vegetation LLC Top agencies USDA (Department of Agriculture)	$534,144	0.3%	Rank history: #95 in FY2022 and not on the FY2023–FY2025 lists; up 19 since FY2020.
49	PG Environmental, LLC Top agencies EPA (Environmental Protection Agency)	$493,662	0.3%	Rank history: not on the FY2022–FY2025 lists; down 8 since FY2020.
50	Stream Wetland Services, L.L.C. Top agencies USDA (Department of Agriculture)	$485,590	0.3%	Rank history: not on the FY2022–FY2025 lists; new, not ranked in FY2020.
51	Southern Sierra Research Station Top agencies DOI (Department of the Interior)	$485,584	0.3%	Rank history: #68 in FY2022 and not on the FY2023–FY2025 lists; up 2 since FY2020.
52	Natures Capital LLC Top agencies USDA (Department of Agriculture)	$482,496	0.3%	Rank history: not on the FY2022–FY2025 lists; up 103 since FY2020.
53	Engineered Systems & Services, L.L.C. Top agencies Army (Department of the Army)	$460,457	0.3%	Rank history: #71 in FY2022 and not on the FY2023–FY2025 lists; up 1 since FY2020.
54	Panamerican Consultants Inc. 2 awardees Top agencies DOI (Department of the Interior)	$449,203	0.3%	Rank history: not on the FY2022–FY2025 lists; up 15 since FY2020.
55	Neiman Timber Company L.C. Top agencies USDA (Department of Agriculture)	$446,445	0.3%	Rank history: #18 in FY2022, #31 in FY2023 and not on the FY2024–FY2025 lists; new, not ranked in FY2020.
56	Camp Dresser & Mckee Inc. Through CDM Federal Programs Corporation Top agencies EPA (Environmental Protection Agency)	$441,505	0.3%	Rank history: not on the FY2022–FY2025 lists; new, not ranked in FY2020.
57	Benson Farms, Inc. Top agencies USDA (Department of Agriculture) DOI (Department of the Interior)	$440,971	0.3%	Rank history: #81 in FY2022 and not on the FY2023–FY2025 lists; up 19 since FY2020.
58	Sustainable Resources Group Intnl Inc. Top agencies Navy (Department of the Navy)	$426,557	0.2%	Rank history: #87 in FY2022, #92 in FY2023, not on the FY2024 list and #19 in FY2025; up 17 since FY2020.
59	AECOM 2 awardees, including AECOM International Inc. and AECOM Technical Services, Inc. Top agencies Army (Department of the Army)	$407,265	0.2%	Rank history: #45 in FY2022, #99 in FY2023 and not on the FY2024–FY2025 lists; down 32 since FY2020.
60	TK Holdings SP Z O O Through P.s.d. W Bukowce SP. Z O.o. Top agencies Army (Department of the Army)	$405,286	0.2%	Rank history: not on the FY2022–FY2025 lists; new, not ranked in FY2020.
61	Ecosite Construction Inc. Top agencies USDA (Department of Agriculture)	$399,985	0.2%	Rank history: not on the FY2022–FY2025 lists; new, not ranked in FY2020.
62	Bric LLC 2 awardees, including Dine Gray & Pape JV Top agencies DOI (Department of the Interior) Navy (Department of the Navy)	$383,539	0.2%	Rank history: #63 in FY2022, #73 in FY2023 and not on the FY2024–FY2025 lists; up 120 since FY2020.
63	Association of Consultants and Engineers Top agencies Navy (Department of the Navy)	$381,966	0.2%	Rank history: not on the FY2022–FY2025 lists; new, not ranked in FY2020.
64	Williamson Landscape Architecture, LLC Top agencies DOI (Department of the Interior)	$365,364	0.2%	Rank history: not on the FY2022–FY2025 lists; down 21 since FY2020.
65	Bzak Landscaping Inc. Top agencies USDA (Department of Agriculture)	$358,729	0.2%	Rank history: #64 in FY2022, #87 in FY2023, #71 in FY2024 and #55 in FY2025; up 5 since FY2020.
66	Garcia Forest Service LLC Top agencies USDA (Department of Agriculture)	$357,845	0.2%	Rank history: not on the FY2022 list, #95 in FY2023, not on the FY2024 list and #75 in FY2025; up 31 since FY2020.
67	Hawaii International Environmental Services Inc. Top agencies Army (Department of the Army)	$351,677	0.2%	Rank history: #62 in FY2022, #83 in FY2023 and not on the FY2024–FY2025 lists; new, not ranked in FY2020.
68	International Archaeology, LLC Top agencies Navy (Department of the Navy)	$349,840	0.2%	Rank history: #43 in FY2022, not on the FY2023–FY2024 lists and #52 in FY2025; new, not ranked in FY2020.
69	Carney Wade Potter Top agencies USDA (Department of Agriculture)	$338,527	0.2%	Rank history: not on the FY2022–FY2025 lists; new, not ranked in FY2020.
70	Native-X, Inc. Archaeological Services Top agencies USDA (Department of Agriculture)	$337,567	0.2%	Rank history: not on the FY2022–FY2025 lists; up 46 since FY2020.
71	Joseph K Opprmnn-Architect P A Top agencies DOI (Department of the Interior)	$336,402	0.2%	Rank history: not on the FY2022–FY2025 lists; up 1 since FY2020.
72	Riley Morgan Top agencies USDA (Department of Agriculture)	$333,517	0.2%	Rank history: not on the FY2022–FY2025 lists; up 31 since FY2020.
73	Commonwealth Heritage Group, Inc. Top agencies USDA (Department of Agriculture)	$314,550	0.2%	Rank history: not on the FY2022–FY2025 lists; up 23 since FY2020.
74	A-1 Tree Care, Inc. Top agencies USAF (Department of the Air Force)	$304,195	0.2%	Rank history: not on the FY2022–FY2025 lists; up 28 since FY2020.
75	Gowest Energy-Native Resources, LLC Top agencies Army (Department of the Army)	$303,700	0.2%	Rank history: not on the FY2022–FY2025 lists; up 95 since FY2020.
76	Deluna, John Top agencies USDA (Department of Agriculture)	$300,300	0.2%	Rank history: not on the FY2022–FY2025 lists; new, not ranked in FY2020.
77	Oakwood Industries Inc. Through Federal Metal Co Top agencies Navy (Department of the Navy)	$300,030	0.2%	Rank history: #82 in FY2022 and not on the FY2023–FY2025 lists; up 6 since FY2020.
78	P G & E LLC Top agencies DOI (Department of the Interior)	$295,425	0.2%	Rank history: #50 in FY2022 and not on the FY2023–FY2025 lists; down 65 since FY2020.
79	Joel Fyock Top agencies USDA (Department of Agriculture) DOI (Department of the Interior)	$293,639	0.2%	Rank history: #96 in FY2022 and not on the FY2023–FY2025 lists; up 82 since FY2020.
80	Rocky Mountain Aggregate & Construction, LLC Top agencies USDA (Department of Agriculture)	$293,428	0.2%	Rank history: not on the FY2022–FY2025 lists; up 39 since FY2020.
81	Environmental Quality, Inc. Top agencies DOI (Department of the Interior)	$285,500	0.2%	Rank history: #94 in FY2022 and not on the FY2023–FY2025 lists; new, not ranked in FY2020.
82	Perimeter Solutions LP Top agencies DOI (Department of the Interior)	$277,190	0.2%	Rank history: not on the FY2022–FY2025 lists; down 42 since FY2020.
83	J.w. Bamford, Inc. Top agencies USDA (Department of Agriculture)	$272,092	0.2%	Rank history: #65 in FY2022 and not on the FY2023–FY2025 lists; new, not ranked in FY2020.
84	Woodring Brothers Excavating Inc. Top agencies USDA (Department of Agriculture)	$264,343	0.2%	Rank history: not on the FY2022–FY2025 lists; up 23 since FY2020.
85	Midnight Sun-Trinity JV, LLC Top agencies Army (Department of the Army)	$260,862	0.1%	Rank history: not on the FY2022–FY2025 lists; up 4 since FY2020.
86	ACE Tree Service Top agencies USDA (Department of Agriculture)	$258,160	0.1%	Rank history: not on the FY2022–FY2025 lists; up 62 since FY2020.
87	CR Turner Enterprises, LLC Top agencies USDA (Department of Agriculture)	$251,653	0.1%	Rank history: not on the FY2022–FY2025 lists; new, not ranked in FY2020.
88	Sundance-Ea Associates JV Top agencies Navy (Department of the Navy)	$251,326	0.1%	Rank history: not on the FY2022–FY2025 lists; down 60 since FY2020.
89	Prime Meridian Media Inc. Top agencies DOI (Department of the Interior)	$250,000	0.1%	Rank history: not on the FY2022–FY2025 lists; new, not ranked in FY2020.
90	Pitlik & Wick, Inc. Top agencies USDA (Department of Agriculture)	$249,212	0.1%	Rank history: #83 in FY2022 and not on the FY2023–FY2025 lists; down 32 since FY2020.
91	West Forest, Inc. Top agencies USDA (Department of Agriculture)	$248,997	0.1%	Rank history: not on the FY2022 list, #21 in FY2023, #24 in FY2024 and not on the FY2025 list; up 97 since FY2020.
92	Monture Creek Land Management, Inc. Top agencies USDA (Department of Agriculture) DOI (Department of the Interior)	$243,667	0.1%	Rank history: not on the FY2022–FY2024 lists and #51 in FY2025; up 40 since FY2020.
93	Lakes Aquatic Weed Removal LLC Top agencies DOI (Department of the Interior)	$243,473	0.1%	Rank history: not on the FY2022–FY2025 lists; up 42 since FY2020.
94	Recon Environmental,Inc. Top agencies DOI (Department of the Interior)	$241,485	0.1%	Rank history: not on the FY2022–FY2024 lists and #92 in FY2025; new, not ranked in FY2020.
95	Marshfield Forest Service, Inc. Top agencies USDA (Department of Agriculture)	$241,343	0.1%	Rank history: #73 in FY2022, #91 in FY2023, not on the FY2024 list and #46 in FY2025; down 38 since FY2020.
96	Hanging Rock Excavation & Construction, Inc. Top agencies USDA (Department of Agriculture)	$233,915	0.1%	Rank history: not on the FY2022–FY2025 lists; down 30 since FY2020.
97	Forest Restoration Inc. Top agencies USDA (Department of Agriculture)	$230,241	0.1%	Rank history: not on the FY2022–FY2025 lists; up 123 since FY2020.
98	Colorado Wood Company Inc. Top agencies USDA (Department of Agriculture)	$229,752	0.1%	Rank history: not on the FY2022–FY2025 lists; down 21 since FY2020.
99	National Forest Foundation Top agencies USDA (Department of Agriculture)	$228,896	0.1%	Rank history: not on the FY2022–FY2025 lists; up 185 since FY2020.
100	J & J Timber Resources, Inc. Top agencies USDA (Department of Agriculture)	$228,030	0.1%	Rank history: not on the FY2022–FY2025 lists; up 50 since FY2020.

Show 75 more

100 of 429 contractors listed here. See the rest on GovTribe.

How this ranking works

Source: every contract action FPDS records (as published on SAM.gov) in the period, as GovTribe received it.
Amounts are net obligations: what was obligated, less what was deobligated. Shares are of $175 million obligated before deobligations, so they never pass 100%.
Parent companies: each action counts under the ultimate parent its award record names, or under the awardee when it names none, so no dollar counts twice. Parents of the same name (Inc., LLC and the like aside) count as one company, since FPDS records a company's parent under more than one UEI over time. GovTribe corrects a few parents and names by hand; see the corrections.
Fiscal year 2021 ran Oct 1, 2020 – Sep 30, 2021. The Department of Defense reports its contract actions to FPDS about 90 days late, so a fiscal year is ranked once they're in, in February, and the list doesn't change after.
Rank changes compare with FY2020. "New" marks a company outside that period's top 500, and "Returned" one of those that was on an earlier fiscal year's list.
Rank lines show each company's rank on every fiscal year's list since FY2021, #1 at the top, on a scale that gives the top of the list more room. A dashed stretch spans years it wasn't on the list. The step from FY2020 takes the color of the rank change beside it.
Placeholder recipients FPDS uses when it names no company ("Miscellaneous Foreign Contractors" and the like) aren't ranked.

Quick answers

Who were the top 10 PSC F099 contractors in FY2021?

1. Delta Land Services LLC ($26.3M), 2. Tanaq-Ecm-8A JV ($12.6M), 3. Oneida Nation ($8.3M), 4. Hgl-Aptim JV LLC ($7.79M), 5. Guardian Environmental Services Co Inc. ($6.79M), 6. Hdr, Inc. ($6.55M), 7. Calista Corp ($6.29M), 8. Olgoonik Corporation ($4.97M), 9. Tetra Tech, Inc. ($4.61M), 10. Buchanan Consulting Services LLC ($3.65M).

On GovTribe

Research every contractor on this list

Every contract, task order and IDV they hold
Their subsidiaries, teammates and competitors
Open opportunities they're positioned for
Alerts when they win new work

Try for free Login