Joe Arnold - Solar Dehydrating Toilets on Longs Peak, Colorado

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The document discusses the history of waste management solutions in Rocky Mountain National Park, beginning with helicopters removing waste in the 1970s. It describes early solar toilet designs from the 1980s and issues with marmot damage, corrosion, and wind. Solutions to these problems incorporated hardware cloth, fiberglass coating, stainless steel, and bracing. Current systems require commitment to maintenance, a place to dispose of dried waste, availability of replacement parts, skills to build specialized components, and customs to deal with waste removal, as there are no perfect solutions and waste must be properly disposed of.

Environment

LONGS PEAK
GEM LAKE
Rocky Mountain National Park
Grand Lake
Estes Park

1970’s HELICOPTER FLY OUT OF “HONEY BUCKETS”

1983
FIRST GENERATION
SOLAR TOILET AT
CHASM JCT.

Rocky Mountain National Park
TRAY EVAPORATOR

REMOVAL OF SOLID
WASTE FROM
DEHYDRATOR
BUCKET

1984 SECOND GENERATION
SOLAR TOILET AT BOULDERFIELD

LESSONS LEARNED/CRITERIA FOR SUCCESS:
1. EASE OF MAINTENANCE AT HIGH ELEVATION
2. MARMOT-PROOF
3. CORROSION RESISTANT
4. SURVIVE WINTER WINDS

MARMOT SOLUTIONS:
1. HARDWARE CLOTH OVER ALL SURFACES
2. FIBERGLASS COATING OVER HARDWARE CLOTH

CORROSION SOLUTIONS:
STAINLESS STEEL LIQUIDS BUCKET, SOLIDS BASKET,
VAULT LINING. POLYETHYLENE RISER.

WIND DAMAGE SOLUTIONS:
¼” GUY CABLES
STEEL ANGLE
BRACING, ETC.

TO BE SUCCESSFUL:
► COMMITMENT TO MAINTENANCE!

TO BE SUCCESSFUL:
► COMMITMENT TO MAINTENANCE!
► PLACE TO DISPOSE OF DRIED WASTE

TO BE SUCCESSFUL:
► COMMITMENT TO MAINTENANCE!
► PLACE TO DISPOSE OF DRIED WASTE
► AVAILABILITY OF REPLACEMENT PARTS

TO BE SUCCESSFUL:
► COMMITMENT TO MAINTENANCE!
► PLACE TO DISPOSE OF DRIED WASTE
► AVAILABILITY OF REPLACEMENT PARTS
► SKILLS TO BUILD SPECIALIZED COMPONENTS

THERE ARE NO PANACEAS!
The waste has to go somewhere…
All systems need maintenance…
WHERE DOES IT GO….??

Joe Arnold
Park Engineer
Rocky Mountain Nat’l Park
1000 Moraine Ave.
Estes Park, CO 80517
970-586-1234
joe_arnold@nps.gov

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Joe Arnold - Solar Dehydrating Toilets on Longs Peak, Colorado

2. LONGS PEAK GEM LAKE Rocky Mountain National Park Grand Lake Estes Park

5. 1970’s HELICOPTER FLY OUT OF “HONEY BUCKETS”

7. 1983 FIRST GENERATION SOLAR TOILET AT CHASM JCT.

9. Rocky Mountain National Park

10.

11. Rocky Mountain National Park TRAY EVAPORATOR

12. PHOTOVOLTAIC POWERED FAN

13. REMOVAL OF SOLID WASTE FROM DEHYDRATOR BUCKET

14. REMOVAL OF SOLID WASTE WITH LLAMAS

15. 1984 SECOND GENERATION SOLAR TOILET AT BOULDERFIELD

16. LESSONS LEARNED/CRITERIA FOR SUCCESS: 1. EASE OF MAINTENANCE AT HIGH ELEVATION 2. MARMOT-PROOF 3. CORROSION RESISTANT 4. SURVIVE WINTER WINDS

17. MARMOT DAMAGE

18. CORROSION

19. WIND DAMAGE

20. MARMOT SOLUTIONS: 1. HARDWARE CLOTH OVER ALL SURFACES 2. FIBERGLASS COATING OVER HARDWARE CLOTH

21. CORROSION SOLUTIONS: STAINLESS STEEL LIQUIDS BUCKET, SOLIDS BASKET, VAULT LINING. POLYETHYLENE RISER.

22. WIND DAMAGE SOLUTIONS: ¼” GUY CABLES STEEL ANGLE BRACING, ETC.

23. 1990’s TO PRESENT: 3rd GENERATION

24.

25.

26. TO BE SUCCESSFUL: ► COMMITMENT TO MAINTENANCE!

27. TO BE SUCCESSFUL: ► COMMITMENT TO MAINTENANCE! ► PLACE TO DISPOSE OF DRIED WASTE

28. TO BE SUCCESSFUL: ► COMMITMENT TO MAINTENANCE! ► PLACE TO DISPOSE OF DRIED WASTE ► AVAILABILITY OF REPLACEMENT PARTS

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30. TO BE SUCCESSFUL: ► COMMITMENT TO MAINTENANCE! ► PLACE TO DISPOSE OF DRIED WASTE ► AVAILABILITY OF REPLACEMENT PARTS ► SKILLS TO BUILD SPECIALIZED COMPONENTS ► LOCAL CUSTOMS CONDUCIVE TO DEALING WITH THE WASTE

31. THERE ARE NO PANACEAS! The waste has to go somewhere… All systems need maintenance… WHERE DOES IT GO….??

32. Joe Arnold Park Engineer Rocky Mountain Nat’l Park 1000 Moraine Ave. Estes Park, CO 80517 970-586-1234 joe_arnold@nps.gov

Joe Arnold - Solar Dehydrating Toilets on Longs Peak, Colorado

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