HomeMy WebLinkAbout20040681.tiff May 8, 2002 EARTH ENGINEERING
CONSULTANTS, INC.
AgPro Environmental Services, LLC
4311 Highway 66, Suite 4
Longmont, Colorado 80504
Attn: Mr. Tom Haren
Re: Construction Observation and Testing
Stromo LLC
Hudson, Colorado
EEC Project No. 1015006A
Mr. Haren:
Earth Engineering Consultants, Inc. (EEC) personnel have completed the requested
construction observation and testing services for the newly placed lining for the runoff
res" storage lagoon at the Stromo LLC Composting facility in Hudson, Colorado. An outline of
the testing completed as a part of that project along with the results of our field and
laboratory testing and site photographs taken during the construction operations are provided
with this report.
The Stromo LLC composting facility is located near Hudson in Weld County, Colorado. The
site is currently used as a composting facility.
As outlined in previous reports, samples of the lagoon liner materials were delivered to our
Fort Collins laboratory for standard Proctor testing in accordance with ASTM designation
D-698. The results of the standard Proctor test were used to calculate the percent compaction
achieved in compacted liner materials in the field. The results of the laboratory testing are
included with this report.
During the period March 18, 2002 through April 4,2002, EEC personnel visited the site and
performed field density testing of the lagoon liner materials that were placed/prepared and
compacted prior to and during our site visits. The field density testing was completed at
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CENTRE FOR ADVANCED TECHNOLOGY
2301 RESEARCH BOULEVARD, SUITE 104
FORT COLLINS, COLORADO 80526 2004-0681
(970) 224-1522 (FAx) 224-4564
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Earth Engineering Consultants,Inc.
EEC Project No I005006A
May 8,2002
Page 2
random locations on each lift and was performed in general accordance with ASTM
Specification D-2922. Results of field density tests completed by EEC personnel during the
referenced period are indicated on the attached summary sheet. The compaction test results
were within project compaction specifications of at least 95% of the materials maximum
Proctor dry density.
On April 26, 2002, EEC personnel returned to the site as requested and completed final
observations of the liner thickness and collected relatively undisturbed samples of the liner
material for laboratory permeability testing. The results of liner thickness observations
conducted at 10 random locations throughout the lagoon area indicated an average
compacted liner thickness of approximately 20 inches with a minimum compacted liner
thickness of 18 inches. Three relatively undisturbed samples of the compacted liner were
collected in 2" diameter thin-walled sampling tubes. Permeability testing of the sampled
materials is underway and the results of those tests will be reported as they become available.
We appreciate the opportunity to be of service to you on this project. If you have any
questions concerning this report, or if we can be of further service to you in any other way,
please do not hesitate to contact us.
Very truly yours,
Earth Engineering Consultants, Inc.
Reviewed by:
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Michael J. Coley, P.E. Lester L. Litton, P.E.
Project Manager Principal Engineer
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EAP91 ENGINEERING CONSULTANTS,PAC.
SUMMARY OF FIELD DENSITY TESTS
c Compliance With
Field Test Results a a 9
Approximate Test Location/Notes 3e 5 g c Project Specifications
Test Elev./ Material Percent Dry `m g e E (P/F)
Date
eakri0
nber Lift No. (Proctor) Moisture Density O Moisture %Comp.
1 3/18 25'north of southwest comer&5'west of toe-of-slope 1?BC A 25.1% 90.7 3.1% 96% N/A ' Pass
2 3/18 75'north of southwest corner&10'west of toe-of-slope 12"BG A 22.1% 93.5 0.1% 99% N/A Pass
3 3/18 125'north of southwest corner&15'west of toe-of-slope 12"BG A 25.4% 92.4 3.4% 98% N/A Pass
4 3/18 northwest comer 15'west of toe-of-slope 12"BG A 24.4% 93.7 2.4% 100% N/A Pass
5 3/18 50'east of northwest corner&10'north of toe-of-slope 17 BG A 22.6% 91.6 0.6% 97% N/A Pass
6 3/18 100'east of northwest corner&5'north of toe-of-slope 1?BG A 21.8% 92.8 -0.2% 99% N/A Pass
7 3/18 150'east of northwest corner&10'north of toe-of-slope 12'BG A 23.7% 93.2 1.7% 99% N/A Pass
8 3/18 northeast comer 5'north of toe-of-slope 12'BG A 25.1% ', 91.5 3.1% 97% N/A Pass
9 3/18 50'west of northeast corner&15'south of toe-of-slope 12'BG A 23.8% 92.6 1.6% 99% N/A Pass
10 3/18 100'west of northeast corner&10'south of toe-of-slope 12'BG A 22.8% li 93.8 0.8% �. 100% N/A Pass
11 3/18 150'west of northeast comer&S south of toe-of-slope 12'BG A 24.4% 90.2 2.4% 96% N/A Pass
12 3/18 southwest comer 10'south of tce-of-slope IT BG A 23.1% 92.4 1.1% 98% N/A Pass
13 3/19 20'east&30'north of southwest corner 12"BG A 19.7% 91.7 -2.3% 98% N/A Pass
14 3/19 20'east&30'south of northwest comer 12"BG A 20.6% 94.2 -1.4% 100% N/A Pass
15 3/19 40'east&25'south of northwest comer 12"BG A 20.3% 91.4 -1.7% 97% N/A Pass
16 3/19 40'east&25'north of southwest comer 12"BG A 23.7% 92.7 1.7% 99% N/A Pass
17 3/19 80'east&20'north of southwest corner 12'BG A ' 24.8% 92.6 2.8% 99% WA Pass
18 3/19 80'east&20'north of southwest comer 12-BG A 21.2% 93.8 -0.8% 100% N/A Pass
19 3/19 80'west&20'north of southeast comer IT BC A 23.2% 92.2 1.2% 98% N/A � Pass
20 3/19 60'west&20'north of southeast comer 12'BG A 21.1% 91.5 -0.9% 97% N/A Pass
21 3/19 40'west&15'north of southeast corner 12'BG A 23.6% 92.4 1.6% 98% N/A Pass
22 3/19 20'west&10'north of southeast comer 12-BG A 22.9% I 93.8 0.9% 100% N/A Pass
23 3/21 northwest comer 15'west of toe-of-slope 6'BG A 20.6% I 94.2 -1.4% 100% N/A Pass
24 3/21 75'east of northwest corner 15'north of toe-of-slope 6'BG A 21.4% - 92.7 -0.6% 99% N/A Pass
25 3/21 125'east of northwest corner 10'north of toe-of-slope 6 BG A 23.8% 91.3 1.8% li 97% N/A ! Pass
26 3/21 175'east of northwest corner 15'north of toe-of-slope 8'BG A 23.2% 92.6 1.2% 99% N/A Pass
/^`7 3/21 northeast comer 10'north of toe-of-slope 6'BG A 21.9% 93.8 -0.1% 100% N/A Pass
28 3/22 50'south of northwest corner&10'west of toe-of-slope 6"BG A 24.2% 90.4 2.2% 96% N/A Pass
29 3/22 40'south&20'east of northwest corner 6-BG A 23.6% 93.8 1.6% 100% N/A Pass
30 3/22 30'south&40'east of northwest comer 6'BG A 20.4% . 94.4 -1.6% 100% N/A Pass
31 3/22 40'south&60'east of northwest corner 6'BC A 22.8% 91.8 0.8% 98% N/A ! Pass
32 3/22 50'south&80'east of northwest comer 6"BG A 23.2% 93.4 1.2% 99% N/A Pass
33 3/26 25'south&100'east of northwest corner 6 BC A 21.6% li 93.1 -0.4% ', 99% N/A Pass
34 3/26 40'south&120'east of northwest corner 6'BG A 22.8% 92.8 0.8% 99% N/A Pass
35 3/28 30'south&140'east of northwest corner 6'BG A 22.2% 92.1 0.2% 98% N/A Pass
36 3/26 40'south&160'east of northwest corner 6"BG A 21.3% 92.7 -0.7% li 99% N/A Pass
37 3/26 50'south&180'east of northwest corner 6'BG A 24.7% 90.8 2.7% 97% N/A Pass
38 3/27 100'south of northwest corner&15'west of toe-of-slope 6'BG A 19.4% 94.3 -2.6% 100% N/A ' Pass
39 3/27 80'south&20'east of northwest corner 6'BG A 22.6% 92.8 0.6% 99% N/A i Pass
40 3/27 90'south&40'east of northwest corner 6'BG A 21.3% 91.6 -0.7% 97% N/A Pass
41 3/27 100'south&60'east of northwest corner 6'BG A 24.7% 91.3 2.7% 97% N/A • Pass
42 3/27 70'south&80'east of northwest corner 6"BG A 22.1% 1 93.7 0.1% 100% WA Pass
43 3/28 southwest corner 5'west of toe-of-slope 6'BG A 21.8% 93.8 -0.4% 100% N/A Pass
44 3/28 25'north&20'east of southwest corner 6"BG A 23.4% 93.1 1.4% 99% N/A Pass
45 3/28 50'east of southwest corner&10'south of toe-of-slope 8'BG A 25.4% 91.6 3.4% • 97% N/A Pass
Proctor Designation A
Maximum Dry Density(pcf) 94.0
Optimum Moisture Content(%) 22.0%
Required Moisture Variance N/A
Required Percent Compaction 95%
Laboratory Method 0-698
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Project Stromo LLC Protect No:1015006A
Location:Weld County,Colorado Date.April 2002 E E C
•
EAf^!i ENGINEERING CONSULTANTS, ► t
SUMMARY OF FIELD DENSITY TESTS
c Compliance With
Field Test Results d a c 2
Approximate Test Location/Notes
s', m Project Specifications
Test Elev./ Material Percent Dry O > a c (P/F)
Date
tuber Lift No. (Proctor) Moisture I Density O Moisture %Comp.
8 3/28 northwest corner 5'north of toe-of-slope Grade A 23.8% 93.2 1.8% 99% N/A Pass
47 3/28 50'east of northwest corner&10'north of toe-of-slope Grade A 20.9% 94.2 -1.1% 100% N/A Pass
48 3/29 100'east of northwest comer&5'north of toe-of-slope Grade A 23.6% 91.7 1.6% 98% N/A • Pass
49 3/29 150'east of northwest corner&10'north of toe-of-slope Grade A 23.7% 92.8 1.7% 99% N/A Pass
50 3/29 50'south of northwest corner&10'west of toe-of-slope Grade A 25.4% 90.4 3.4% 96% N/A I Pass
51 3/29 40'south&20'east of northwest corner Grade A 21.9% 94.6 -0.1% 101% N/A I Pass
52 3/29 30'south&40'east of northwest corner Grade A 22.7% 92.2 0.7% 98% N/A Pass
53 4/1 50'south&20'west of northeast comer Grade A 20.6% 93.7 -1.4% 100% NIA i Pass
54 4/1 40'south&40'west of northeast corner Grade A 22.8% • 92.8 0.8% 99% N/A Pass
55 4/1 30'south&60'west of northeast corner Grade A 23.4% 92.1 1.4% 98% N/A Pass
58 4/1 40'south&80'west of northeast corner Grade A 22.5% 92.4 0.5% 98% N/A Pass
57 4/1 SC south&100'west of northeast corner Grade A 23.0% 92.1 1.0% ! 98% N/A i Pass
58 4/3 100'south of northwest corner&15'west of toe-of-slope Grade A 24.0% 91.4 2.0% 97% N/A I Pass
59 4/3 90'south&20'east of northwest comer Grade A 23.8% 91.8 1.8% li 98% N/A I Pass
60 4/3 70'south&40'east of northwest corner Grade A 22.0% 94.7 0.0% 101% N/A I
m Pass
61 4/3 80'south&60'east of northwest comer Grade A 21.6% 93.8 -0.4% 100% N/A Pass
62 4/3 70'south&80'east of northwest corner Grade A 23.7% 92.0 1.7% 98% N/A Pass
63 4/4 southwest comer 10'west of toe-of-slope Grade A 23.8% 92.4 1.8% 98% N/A Pass
64 4/4 50'east of southwest corner&5'south of toe-of-slope Grade A 24.5% 92.1 2.5% 98% N/A Pass
85 4/4 100'east of southwest corner&10'south of toe-of-slope Grade A 19.7% i 93.7 -2.3% 100% N/A ! Pass
88 4/4 125 east of southwest corner&15'south of toe-of-slope Grade A 22.8% 91.8 0.8% 97% N/A Pass
67 4/4 20'north&20'east of southwest corner Grade A 20.8% 93.0 -1.4% 99% N/A Pass
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Proctor Designation A
Maximum Dry Density(pct) 94.0
Optimum Moisture Content(%) 22.0%
Required Moisture Variance N/A
Required Percent Compaction 95%
Laboratory Method D-698
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Project: Stromo LLC Project No:1015006A
Location:Weld County,Colorado Date:April 2002 E E C
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Earth Engineering Consultants, Inc.
Summary of Laboratory Classification/ Moisture-Density Relationship
(-4',
145 I \ ' Material Designation: 1015006A.A
YR Sample Location: Delivered Sample
I Description: Brown Sandy Lean Clay
140 4
I \ \ Atterbera I imits(ASTM D-43181
3 1. Liquid Limit: —
135 ' \ Plastic Limit: —
1 Plasticity Index: —
\ Percent Passing No.200 Sieve(ASTM C-117): 53.4%
130 \ Standard Prnctnr(ASTM D-6981
: '75 1 \ Maximum Dry Density: 94.0 pcf
c Optimum Moisture Content: 22.0%
0 125 i -
3
cI Curves for 100%Saturation
a 120 For Specific Gravity Equal to:
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c 2.80
2.70
e..D> 115 i 2.60
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p 110 .
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105
100 I
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95
90 ! i l l i
0 5 10 15 20 25 30 35
Percent Moisture
Project: Stromo LLC
Hudson,Colorado
Project No: 1015006A
Date August 2000
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EEC
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n July 19, 2002 4110
EARTH ENGINEERING
AgPro Environmental Services,LLC CONSULTANTS, INC.
4311 Highway 66, Suite 4
Longmont,Colorado 80504
Attn: Mr.Eric Dunker
Re: Final Permeability Testing
Stromo LLC
Weld County, Colorado
EEC Project No. 1015006A
Mr.Dunker:
As requested,Earth Engineering Consultants,Inc. (EEC)personnel have completed the final sampling and
permeability testing of the runoff storage lagoon at the Stromo LLC composting site in Weld County,
Colorado.An outline of the testing completed as a part of that project along with the laboratory test results
are provided with this report.
As outlined in our report dated May 8,2002,EEC personnel completed field density testing at the new runoff
storage lagoon at the referenced site. The final test results met the project compaction requirements of at
least 95%of the materials maximum Proctor dry density.
In June 2002,relatively undisturbed samples of the existing lagoon liner materials were collected in the field
by EEC personnel. Those samples were hand delivered to the Knight Piesold laboratory in Denver for
laboratory flexible wall permeability testing. Results of those tests indicated a permeability (k) value of
l.5xl0b cm/second.
We appreciate the opportunity to be of service to you on this project. If you have any questions concerning
this report, or if we can be of further service to you in any other way,please do not hesitate to contact us.
Very trul
Eart 1"^'( . .I nsultants,Inc.
•
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Michae ,
Lester L. • ,P.E.
Project Engineer Principal Engineer
ftes'S CENTRE FOR ADVANCED TECHNOLOGY
230 I RESEARCH BOULEVARD, SUITE 104
FORT COLLINS, COLORADO 80526
(970) 224-1522 (sax) 224.4564
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Environmental Consultants — Engineers — Architects — Planners POST-LINER POND CONTOURS 2
Evaluation of potential impact to surface and ground water (14.4.2 (I))
Site Geological and Hydrogeological Conditions:
Geological Conditions:
In previous site investigations in the same area related to remediation of a crude oil flowline leak in
1990, the shallow geology of the site was identified to a depth of +1- 16 feet. These geologic
investigations indicate that there are at least two separate impermeable layers of clay loam which
overlay and protect the sandy gravel located below. The first clay bed is located at 5 feet below
ground surface and the second at 10 feet below ground surface. During the site investigation
period, the sandy gravel section was dry. A cross section of the geologic profile is provided as an
attachment to this document entitled "Site Geological and Hydrogeological Data" and located in
the "Appendix Section". The USDA, Soil Conservation Service Classification of Weld county
Soils Survey, 1980 indicates the surface soils as valent sands from 0 to 3 percent slopes and 3 to 9
percent slopes. Valent sands are described as deep, excessively drained brown sands.
Hydrogeological Conditions:
The proposed site is not located within a "Aquifer Recharge Area" as evidenced by a review of the
"Weld County Aquifer Recharge Area" map which was produced from data provided by the
Colorado Land Use Commission. A copy of a portion of this map is provided as an attachment to
this document entitled " Site Geological and Hydrogeological Data" and is located in the
"Appendix Section".
The East Neres Canal that runs in a northeasterly direction and crosses to the west of Section 26
represents the nearest surface water. This canal is located greater than % mile from the proposed
site and upgradient to the proposed site. Milton Reservoir is located approximately 1 '/3 miles north
of the site.
A registered domestic groundwater well is located north and west of the site approximately ''4 to 1/3
of a mile downgradient of the composting facility. Groundwater monitoring wells will be installed
between the facility and the domestic well. The monitoring wells will be sampled and analyzed as
outlined in the Groundwater Monitoring Section of this plan.
Proximity to Floodplain:
The proposed site is not located in any floodplain as evidenced by a review of the "Hydrologic Unit
Map" — State of Colorado. A copy of a portion of this map is attached to this document and is
located in the"Appendix Section".
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Your "Pro Ag"Environmental Professionals
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r. Public Water Supply:
No public water supply wells, springs, or surface water intakes exist within one mile of the
proposed site.
Identification of all Surface waters:
No surface waters are located within '/2 mile of the proposed site.
Depth for Uppermost Aquifer& Thickness
The depth to the uppermost aquifer is 40 feet below land surface based on well data dating to 1964.
Reviews of the State Engineer's office well records do not identify a lower confining layer in the
subject site and adjacent site's well records. The thickness of the Aquifer is unknown.
Hydrologic Properties of Uppermost Aquifer:
Unknown
Quality of Ground Water Beneath Site:
Groundwater samples from irrigation wells located approximately 1 '/2 miles west of the site
indicate extremely high concentrations of total dissolved solids (salts) and groundwater nitrates in
the 20 parts-per-million range. This is almost double the EPA recommended 10 parts-per-million
nitrate levels for human consumption.
Types & Regional Thickness of Unconsolidated Bedrock:
Based on core data generated during petroleum well drilling activities, the principal type of bedrock
is a clay stone/shale. The bedrock is located between 40 and 80 feet below grade in the subject site
vicinity. The thickness of the bedrock is estimated at 6-12 feet.
Geologic Hazards:
Weld County geologic hazards maps and data from the Colorado Geologic Service do not identify
any geologic hazards in the subject site area.
Plans for interim and final closure of the site 14.4.2(J)
In the event that it becomes necessary to close the proposed composting facility including the
discontinued receipt, processing and sale of materials for more than 180 days , or otherwise
approved by the CDPH&E, the site will be returned to its original condition. The CDPH&E will be
notified of closure activities and when closure is complete. Closure activities at the facility will not
exceed 90 days without a prior written extensions granted by the CDPH&E. No permanent
structures are planned for the site. All gates, fences and signs will be removed. The following
closure tasks are expected:
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�-� 1) Removal of Residual Materials from Facility: All raw composting materials, manures
and residual materials (sawdust, crop residues, etc.) used in the composting process will
be removed from the site and sent to another approved composting facility or permitted
solid waste facility as necessary or incorporated into adjacent fields by plow cultivation
in an agronomic manner according to Colorado State University, Cooperative Extension
fertilization recommendations.
2) Removal of Compost Debris from Surface Soils in Windrow Areas: After the
windrow area of the facility has been cleared of all composting material, the shallow
surface area will be scalped to remove the compost "hard pan" layer that typically
develops over extended periods of processing. This compost hardpan residue will be
removed from the site and also incorporated into adjacent fields by plow cultivation
similar to paragraph 1 above.
3) Stormwater and Containment Structures: Any stormwater accumulation in the
stormwater containment structure will be dewatered onto adjacent farm ground in an
agronomic manner according to Colorado State University, Cooperative Extension
fertilization recommendations. Residual solids accumulations in the structure will be
removed and land applied along with the surface soils from the composting areas as
outlined in paragraph 2 above. The containment structure will be leveled and the ground
returned to an original state prior to construction and operation.
�.� 4) Re-Contouring of Subject Site: All roads, ditches, berms, earthen diversion and
containment structures will be graded back into the "cut area" from which it was
generated to re-establish original surface contours. A laser-leveling instrument will be
used to tie in the re-contoured areas with original grades and contours.
5) Re-Seeding of Disturbed Surface Area: The disturbed surface area will be prepared
by disking to produce a seedbed. A dry land grass pasture mix including a winter rye or
oats cover crop seed will be drilled into the prepared seedbed. The newly seeded area
will be fenced off from use for a time period adequate to allow the grass seed to
germinate and become established.
6) Post Closure Ground Water Monitoring: Water samples from the proposed down
gradient monitor well will be sampled on a quarterly basis and analyzed for the
following:
Nitrates Total Dissolved Solids Salts Electro Conductivity (EC)
PH Potassium Phosphorus RCRA Metals
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i-. This monitoring program is planned for a period of five years. Evaluation of analytical
results after year one will further define the need for continuing for all of years 2 through
5.
Contingency Plan for Corrective Actions 14.4.2(K)
The shipping/receiving procedures described in 14.4.2(E)(A) are intended to discourage the
(1) Presence of any CDPHE "unapproved wastes". Deliveries to the site will be from known
sources and routine suppliers. Unexpected deliveries from unknown sources are not planned or
expected. Should an unapproved waste be inadvertently brought to the site, the deliverer will not be
allowed to unload and will be required to leave the premises.
(2) The protection of any surface water or shallow ground water will be accomplished by
constructing the compost pads with proper slope to enhance surface water runoff to be directed to
the storm water retention area in the northeast corner of the site. Additionally, pumping and
application at agronomic rates of any accumulated storm water to the adjacent cultivated field to the
west will further minimize the accumulation of water and potential for contamination
(3) Nuisance Conditions including odor and/or flies will be minimized by applying best
management practices in the composting area and to the compost piles as described in the nuisance
management sections of this document.
Additional Details on Nuisance Control 14.4.2(K)
i-. This Management Plan for Nuisance Control has been developed and implemented to identify
methods StroMo, LLC, will use to minimize the inherent conditions that exist in composting
operations. This supplement outlines management practices generally acceptable and proven
effective at minimizing nuisance conditions. StroMo, LLC, will use these management and control
practices, to their best and practical extent.
The four potential sources for nuisance conditions at the proposed site are dust, flies, odors, and
windblown debris. These nuisance conditions control will be handled as follows:
Air Quality
Air quality at and around composting operations is affected primarily from the relationship of
soil/manure and available moisture. The two primary air quality concerns at composting operations
are dust and odor. However, the management practices for dust or odor control are not inherently
compatible. Wet surfaces and manure produce odor. Dry surfaces and manure dusty. The two
paragraphs below outline the best management practices for the control of dust and odors that
StroMo, LLC will use. The manager shall closely observe conditions and attempt to achieve a
balance between proper dust and odor control.
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�.. Dust
Dust control will be accomplished by wetting down the access roads and facility roads as necessary
to minimize fugitive dust at the site and migrating fugitive dust off-site. Intensive management of
the surface usually controls dust from surfaces by routine cleaning of the surface. The purpose of
intensive surface management is twofold; to mix dry and moist surfaces and to reduce pest habitat.
The best management systems for dust control involve moisture management. Management
methods StroMo, LLC shall use to control dust are:
Windrow density
Moisture can be managed by varying windrow densities. The compost's moisture content
keeps the surface moist and control dust emissions.
Regular manure composting
StroMo, LLC will incorporate raw manure into the composting operation within 72 hours.
Open areas will be harrowed several times per month. This will maintain the surface of the
composting operation and level wheel tracks and loader gouges.
Sprinkling
Should nuisance dust conditions arise, sprinkling may be used for moisture control on
surfaces and internal roadways to minimize nuisance dust conditions.
Odor
Odors result from the natural decomposition processes that start as soon as the manure is excreted
and continue as long as any usable material remains as food for microorganisms. Odor strength
depends on the kind of manure, and the conditions under which it decomposes. Although
occasionally unpleasant, the odors are not dangerous to health in the quantities customarily noticed
around manure composting operations.
On-Site: Odors associated with the composting process will be minimized by frequently turning the
windrow piles as needed in order to introduce oxygen into the waste mass and accelerate the bio-
degradation of the waste manure which in turn will minimize odors in the compost mass.
Off-Site: In the event, off-site odors are detected, composing operations will be evaluated and more
frequent turning and or covering of temporary stockpiles with bulking agent will occur. Should
these procedure prove inadequate,biofilters or other masking materials will be utilized to mitigate
the odor migration problem.
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Key practices StroMo, LLC may use to control odor are:
Establish good surface drainage
Dry materials are less odorous than wet materials. Materials will be incorporated into
compost within 72 hours of arrival on site. Regular harrowing and grading of the
composting surfaces can achieve maintaining good pen drainage. The facility will conduct
routine cleaning and harrowing to reduce standing water and minimize wet material.
Reduce standing water
Standing water can increase microbial digestion and odor producing by-products. Proper
surface maintenance and surface harrowing will be conducted by the facility to reduce
standing water.
The wastewater ponds will be dewatered within 15 days after a 25-year, 24-hour storm
event.
Composting
Proper composting turns organic materials into a nearly odorless, pathogen-free product that
is valuable for soil conditioning. StroMo, LLC will maximize composting on the land area
available for that purpose.
Land application timing
Typically air rises in the morning and sinks in the evening. StroMo, LLC will consider
weather conditions and prevailing wing direction to minimize odors from land application of
stormwater. Typically, land applications will be timed for early mornings.
Pest Control
Insects and Rodents
Insects and rodents inhabit areas that 1)have an adequate to good food supply and 2) foster habitat
prime for breeding and living. Key practices StroMo, LLC will use to manage insects and rodents
are to first eliminate possible habitat, and then reduce the available food supply.
On-Site: The presence of flies will be minimized by frequently turning the windrow piles as
necessary to avoid anaerobic conditions which tends to produce pockets of decayed wastes which,
in turn, attracts flies. Additionally, the fly population will be controlled through the use of
spray/mist equipment using EPA approved chemicals to treat the surface areas of the site where
flies are observed to congregate.
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r-. Off-Site: If flies are observed to be originating at the subject site and move offsite; fly bait traps will
be placed along the perimeter of the site to minimize off-site migration.
The facility will control flies by applying one or more of the following practices as needed:
Regular manure removal and composting
The management and frequencies outlined in this operations plan removes both food sources
and habitat
Reduce standing water
Standing water is a primary breeding ground for insects
Minimize fly habitat
Standing water, weeds and grass, manure stockpiles, etc., are all prime habitat for
reproduction and protection. Reduce or eliminate these areas where practical.
Manage weeds and grass
Keep weeds and grassy areas to a minimum. These provide both protection and breeding
areas.
Minimize stockpiles or storage of manure
Stockpiles of manure provide both breeding and protective habitat. Keep stockpile use to a
minimum.
Biological treatments
Parasitic wasps are excellent biological fly control and are widely used. The wasps lay their
eggs in fly larvae hindering fly reproduction.
Baits and chemical treatments
Due to environmental and worker's safety concerns, chemical treatments are a last line of
defense for insect control. However,they are very effective. Baits and treatments must be
applied routinely.
Windblown Debris
The migration of wind blown debris off-site will be minimized by the installation of mesh wire
fencing along the perimeter of the proposed facility in the down wind direction of the prevailing
winds. Any windblown debris that does escape the proposed facility will be recovered on a periodic
basis.
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e-. Fire Protection Plan 14.4.2(L)
The elements of a "Fire Protection Plan" were reviewed by the project engineer and Mrs. Wes
Scott, Manager of the Platteville/Gilcrest Fire Protection District. The specific elements that Mr.
Scott suggested should comprise the"Fire Protection Plan"are as follows:
a) Access to the site should be clearly marked by signage posted at the main entrance. The
business hours phone number for the district, as well as the '911" emergency contact
number.
b) The site service road should provide easy access to all areas of the site being used for the
composting process and allow for fire engine turnarounds within the site.
Since no buildings are planned for construction at the site nor are any employees of the applicant
required to be at the site on a permanent basis, no other special requirements of elements were
required by Mr. Scott in preparation of the "Fire Protection Plan".
Low Permeability Work Pad 14.4.3
The site is graded and maintained to prevent ponding of stormwater and leachate to ensure
groundwater protection. The site contains sufficient slopes of 3 to 9 percent to facilitate direction of
stormwater drainage to the stormwater collection system. Manure and composted materials used at
the site, once compacted, are known to create a "hard pan" of virtually impermeable surface
materials approximately 6 to 10 inches thick.
Given the type of soils and the degree of slope existent at the site, it is the opinion of the site
engineer that the precautions and concerns articulated in this section of the regulations will
minimize and adequately address protection of groundwater and surface water resources.
Ground Water Monitoring 14.4.4
One up gradient and two down gradient groundwater monitoring wells are installed around the site.
The up gradient well is located in the southeast portion of the property. The two down gradient
wells are located on the north and northwestern portions of the property respectively. The wells are
measured quarterly for groundwater elevations and calculation for groundwater flow direction.
Quarterly intensity will occur for the first year of operation. If no evidence of contamination is
shown after year one, a written request will be submitted to the Colorado Department of Public
Health and Environment and the Weld County Health Department to reduce groundwater
monitoring frequency to yearly.
Copies of the 2001-2002 groundwater-monitoring reports are included.
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es.
i-. Management of the Compost Piles 14.5.4(A)
(I) The density of the fecal coliform present in the compost shall be maintained at less than
1000 Most Probable Number per gram of total solids (dry weight basis); or
(2) The density of Salmonella sp. Bacteria in the compost shall be maintained at less than
three (3) Most Probable Number per four (4) grams of total solids (dry weight basis) at
the time the compost is to be sold or otherwise distributed for use.
NOTE: To comply with 14.4.5(A) of the regulations, a sample of the compost windrow subsequent
to the blending of bulk materials with the manure will be taken in procedures described in the
section entitled "SAMPLING/ANALYSIS PROCEDURES". During the compost process stage, the
SOLVITA Maturity Index procedure will be used to monitor the maturity stage of each compost
pile. Data generated by the SLOVITA protocol include CO2 rate and ammonia levels (NH3) in the
compost mass and provides guidelines for manipulating these constituents to enhance the compost
process. A copy of the SLOVITA testing guidelines are provided as an attachment to this document
entitled "Guide to SLOVITA testing for compost maturity index? And is located in the "Appendix
Section".
Management of the Compost Piles 14.5.4(B)
Compliance with 14.4.5(B) will be accomplished by maintaining the in-process compost pile at a
temperature of 55 degrees Celsius (131 degrees Fahrenheit) or higher for 15 days or longer. During
the period when the compost is maintained at 55 degrees Celsius or higher, there shall be a
minimum of five (5) turnings of the windrow. Procedures for sampling and testing are previously
described in the attached document entitled "SAMPLING/ANALYSIS PROCEDURES".
Closure Plans 14.6
In the event that it becomes necessary to close the proposed composting facility, the site will be
returned to its original condition. All structures, fences and signs will be removed. The following
closure tasks are expected:
7) Removal of Residual Materials from Facility: All raw composting materials, manures
and residual materials (sawdust, crop residues, etc.) used in the composting process will
be removed from the site and sent to another approved composting facility or permitted
solid waste facility as necessary or if applicable, incorporated into adjacent fields by
plow cultivation in an agronomic manner according to Colorado State University,
Cooperative Extension fertilization recommendations.
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8) Removal of Compost Debris from Surface Soils in Windrow Areas: After the
windrow area of the facility has been cleared of all composting material, the shallow
surface area will be scalped to remove the compost "hard pan" layer that typically
develops over extended periods of processing. This compost hardpan residue will be
removed from the site and also incorporated into adjacent fields by plow cultivation
similar to paragraph 1 above.
9) Stormwater and Containment Structures: Any stormwater accumulation in the
stormwater containment structure will be dewatered onto adjacent farmground in an
agronomic manner according to Colorado State University, Cooperative Extension
fertilization recommendations. Residual solids accumulations in the structure will be
removed and land applied along with the surface soils from the composting areas as
outlined in paragraph 2 above. The containment structure will be leveled and the ground
returned to an original state prior to construction and operation.
10) Re-Contouring of Subject Site: All roads, ditches, berms, earthen diversion and
containment structures will be graded back into the "cut area" from which it was
generated to re-establish original surface contours. A laser-leveling instrument will be
used to tie in the re-contoured areas with original grades and contours.
11) Re-Seeding of Disturbed Surface Area: The disturbed surface area will be prepared
by disking to produce a seedbed. A dry land grass pasture mix including a winter rye or
oats cover crop seed will be drilled into the prepared seedbed. The newly seeded area
will be fenced off from use for a time period adequate to allow the grass seed to
germinate and become established.
12) Post Closure Ground Water Monitoring: Water samples from the proposed down
gradient monitor well will be sampled on a quarterly basis and analyzed for the
following:
Nitrates Electro Conductivity (EC) Total Dissolved Solids Salts
PH RCRA Metals Potassium Phosphorus
This monitoring program is planned for a period of five years. Evaluation of analytical
results after year one will further define the need for continuing for all of years 2 through
5.
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14.6.1 and 14.6.2
It is not anticipated that the site will experience some interim period of non-use. However, in the
event that it becomes necessary to close the proposed composting facility including the discontinued
receipt, processing and sale of materials for more than 180 days, or otherwise approved by the
CDPH&E, the site will be returned to its original condition. The CDPH&E will be notified of
closure activities and when closure is complete. Closure activities at the facility will not exceed 90
days without a prior written extensions granted by the CDPH&E.
14.6.3 and 14.6.4
Since no permanent structures will be constructed at the site, closure of the site at the conclusion of
composting operations will consist of removing all compost and bulk materials from the site;
disking of the surface areas used for composting, and re-seeding of the impacted site with a dry land
pasture grass mix to be drilled in. Additionally, a straw-mulch will be lightly disked into the
seedbed along with a separate seeding of the area with a cover crop of winter rye or oats to
minimize soil erosion during the grass germination/maturation stage.
Post Closure Care and Maintenance 14.7
A. Following closure of the facility, a notation will be placed on the deed notifying any
potential purchaser that the property has been used as a composting facility.
�., B. The post closure care and maintenance shall be for(5) five years and shall consist of:
(1) The continued monitoring and sampling of groundwater or surface water.
(2) Inspection and maintenance of any cover material or vegetation.
S mitt b
Il/'5 ov
Date
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r
APPENDIX
Floodplain Map
Hydrologic Unit Map
Aquifer Recharge Areas
Sampling/Analysis Procedure
SOLVITA Maturity Index
Stormwater Containment Construction Information
Groundwater Monitoring Data
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NATIONAL FLOOD INSURANCE PROGRAM
FIRM
FLOOD INSURANCE RATE MAP
WELD
COUNTY,
COLORADO
UNINCORPORATED AREA
PANEL 900 OF 1075
(SEE MAP INDEX FOR PANELS NOT PRINTED•
•
COMMUNITY•PANEL NUMBER
080266 0900 C
MAP REVISED:
ii SEPTEMBER 28, 1982
federal emergency management agency
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PROPOSED COMPOST SITE
GEOLOGIC STRATIGRAPHY
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STROMO, LLC COMPOST FACILITY
SAMPLING/ANALYSIS PROCEDURE
Page 1 of 3
I. OVERVIEW:
The primary source of animal manure waste will be generated by MORWAI Dairies. Each
load of manure received at the compost site will be logged into a traffic journal maintained at
the compost site. The manure received will be either stockpiled in the receiving area or
dumped directly into a compost row where bulking materials will be blended with the manure
mass. There will be two stages of sampling/analysis conducted at the compost site.
II. Initial Sampling/Analysis Procedure:
A. Sampling Procedure: •
Once the manure wastes are windrowed but prior to blending with bulking materials, random
grab samples of the manure waste will be collected at designated linear intervals from one
end of the row to the other end. Each grab sample should consist of +/- 1/2 pound of sample
material and should be placed in one or more clean plastic 5 gallon pails. The grab samples
will then be thoroughly blended in a large plastic tub. Once the sample mass has been
successfully homogenized, a 1 pound composite sample will be collected and placed in a 1
gallon zip lock plastic bag; placed in a iced or refrigerated cooler; and delivered within 8 hours
✓s' to a designated laboratory with a "chain of custody" document completed for each sample
submitted (several samples may be entered on to a single document form.
B. Analysis Procedure:
The composite sample will be submitted for laboratory analysis to determine the following
constituent concentrations;
- Moisture (%)
- Nitrates (ppm)
- Nitrogen (%)
- ph
- EC (salts) •
- Organic Matter [(%) & (carbon:nitrogen ratio)]
The test results for each sample submitted will entered info a "Lab Analysis" log book for
future reference.
NOTE: Based on the lab data generated during the initial sampling/analysis stage,the raw
manure waste will be mixed with bulking materials, water, and/or other nutrients to accelerate
the bio-degradation process. After subsequent cyclical rotations (turnings) and other
treatment of the windrowed manure mass has been completed, the second stage of sampling
analysis will be accomplished.
r
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STROMO, LLC COMPOST FACILITY
SAMPLING/ANALYSIS PROCEDURE
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Page 2 of 3
Ill. Final Sampling/Analysis Procedure:
A. Sampling Frequency:
In compliance with 14.5.2 of the CDPHE regulations, "(A) Finished compost will be sampled
and tested once every 20,000 cubic yards of compost produced or annually, whichever is
more frequent; and (B) Finished compost which has been sampled and tested, but to which
additional feedstock is added prior to, or during distribution, shall be re-sampled and re-tested
prior to commencing or continuing distribution".
A. Sampling Procedure:
In compliance with 14.5.3 of the CDPHE regulations, the following sampling procedure will be
implemented to "------assure valid and representative analytical results":
Once the compost operations supervisor determines that an individual windrow of processed
manure waste appears to have completed the bio-degradation cycle, random grab samples of
the processed material will be collected at designated linear intervals from one end of the row
to the other end. Each grab sample should consist of +/- 1/2 pound of sample material and
should be placed in one or more clean plastic 5 gallon pails. The grab samples will then be
thoroughly blended in a large plastic tub. Once the sample mass has been successfully
homogenized, a 1 pound composite sample will be collected and placed in a 1 gallon zip lock
plastic bag; placed in a iced or refrigerated cooler, and delivered within 8 hours to a
designated laboratory with a "chain of custody" document completed for each sample
submitted (several samples may be entered on a single document form.
STR0MO, LLC COMPOST FACILITY
SAMPLING/ANALYSIS PROCEDURE
*************a._"_"___e*******SA££££**
Page, 3 of 3
B. Analysis Procedure:
In compliance with 14.5 Table 1 of the CDPHE regulations, the following analysis will be
accomplished for finished compost to be sold or distributed for off-site usg;
TABLE 1
Maximum Constituents Concentration for Compost
Sold or Distributed for Offsite Use
[ mg/kg (ppb) dry weight basis]
CONSTITUENTS MAXIMUM LEVEL
INORGANICS ' (mg/kg)
Arsenic (As) 41
n Cadmium(Cd) 39
Copper (Cu) 1500
Lead (Pb) 300
Mercury (Hg) 17
Nickel (Ni) 420
Selenium (Se) 100
Zinc (Zn) 2800
BIOLOGICAL
Fecal Coliform see 14.5.4
Salmonella see 14.5.4
"Inorganic Methodology: Test Methods for Evaluating Solid Waste Physical/Chemical
Methods" (SW-846), Third Edition, December 1996.
As, Cd, Cu,Pb,Ni,Se, and Zn by Method No. 6010 or No. 7000.
Hg by No. 7471
The sampling/analysis procedures will be reviewed on an annual basis to assure that those
procedures stay in full compliance with county and state regulations.
n
eitcp
kcOLVITA sesc,o�
by WOODS END®RESEARCH
GUIDE TO SOLVITA® TESTING '
FOR COMPOST MATURITY INDEX
The Solvita®test kit is a new, simple procedure that gives a Maturity Index for any sample
of active or aged compost. It is based on measuring carbon-dioxide respiration and ammo-
nia content simultaneously in the same test. Each test alone provides important clues to
compost quality, and used together provide valuable information to judge the condition
and safety of any composted product.
Compost Maturity 18—i term that has been used in a variety of ways.The Sohdta Maturity
Test ranks your compost on a 1-to-S index scale of increasing maturity. Maturity means
resistant to further decomposition and free of compounds such as ammonia and organic
acids which can be toxic to plant growth.
• The Solvita test can be used effectively for the following purposes:
1))!valuating compost conditions in order to make improvements to the compost process:
2)Establishing compost maturity for marketing reasons and to determine the best end-use
prior to distribution and sales.
Solvita Compost Testing:
3 Steps to Satisfactory Results
There are three easy steps involved in using the Solvita test kit to evaluate compost.
A- Obtain and prepare the sample. •
B-Perform the test by placing both Solvita gel-paddles in the jar. Use enclosed Color Keys
to find the appropriate color numbers. Use the simple computation table to determine
your compost's Maturity Index.
C-Interpret the results. Once you know the maturity index, consider the process
management and desired end use of your compost. Use the tables in the manual as well
as the troubleshooting section to evaluate the process and determine the best use.
TIPS ABOUT HANDLING THE SOLVITA KIT
All Solvita kits are carefully packaged at the factory to insure highest quality prior to ship-
ping.The gel-paddles should be the"Control Color"when the foil pack is opened (see color
chart). If the foil packs have been punctured or damaged, or the jar cracked in any way,
then the test may not work properly. Store at room temperature and use within the indi-
cated time period. Shelf-life is significantly extended by refrigerating the un-opened foil
packs. Do not allow to freeze.
Page 1
i
7
INS '1' R UCT1ONS
SAMPLE PREPARATION The Soivita paddles and their foil packages are color-coded:
the carbon-dioxide paddle(marked with"C")is purple at the
1. COMPOSITE SAMPLE:A composite representing the whole start and the ammonia paddle(marked with"A")Is yellow.
pile to be tested(or any part thereof)should be gathered in a Open each package by tearing along the top strip and care-
pail by making several sub-samples around the pile with a fully remove the paddle by grasping the handle. Do not touch
shovel,mixing as you go. It is(deal to take a sample Just the special gel surface,and don't allow compost to touch it.
Walli after turning a pile,since it will be homogenous. Particles C Once the gelpack is opened, the test should be started within
such wood chips which are too large for the Jar(over 1/2 r ' 30-minutes.The gel is not harmful to touch,but should be
inch)should be removed or screened from the compost earn- fffffffffff kept out of the mouth and eyes.
pie at this point. If the sample is hot, it should be allowed to
cool covered to room temperature before testing(see note , 2. Insert the paddles into the sample at right angles to each
about equilibration). q°a!OST other so that they can be seen through the viewing side.The
edges of the paddles can be touching In the middle. Positio
2.CHECK MOISTURE:Optimal moisture is absolutely neces- iii;,,."r. the two paddles as indicated by the color squares on the Jai
sary for accurate maturity testing.Samples which are either sf„ ' .label. Push the paddle tips Into the compost to the bottom of
too wet or too thy are not likely to produce accurate results. .. " the Jar. Be careful not to jostle or tip the jar. Do not use a pad
The moisture level should be Judged by the squeeze test die if the gel is dried out or if the color is not the"Control
before proceeding with sampling'.If the compost appears too Color"indicated on the respective color charts.
(optional) wet or too dry, it is advisable to make adjustments to the
process prior to sampling. Changes made to samples after 3. SCREW THE LID TIGHT. and keep the Jar at room tempera-
removal from a pile may bias the test results unpredictably. . ture(68-77°F or 20-25°C) out of direct sunlight for 4 hours.
Illa3. LOAD COMPOST INTO THE JAR:Fill the jar to the Milne : 4. READ THE GEL COLOR. Read the Soivita paddle colors 4
and obtain proper density by sharply tapping the bottom of -- hours after the test is started.To read the colors,observe the
the jar on a counter. Fluffy or coarse composts should be ,t; n paddles through the viewing side of the Jar with the lid in
-4— compacted by pressing firmly into the jar. g place and illuminated from the front.Color rendition is best hi
3_ • -' t moderate-intensity, fluorescent room light.Compare to the
wtv 4. EQUILIBRATION NEED: If compost is tested which is not --�' color charts provided with the kit, and record the color num-
already in an optimal state,It may need equilibrating prior to . hers that most closely match. Since the Solvita colors may
running a maturity test.This is the case if a compost has continue to change after 4-hours,the proper interpretation fm
been sampled extremely hot(thermophilic):or has been this test is based on a 4-hour reading.
recently adjusted by adding water or drying due to being very pio
Ella
u 2 E 1 P, dry or too wet, or has been previously frozen and thawed. iLR'�. j(\j 5 ABOUT RECYCLING OUR STYRENE PADDLE:
IIIV 9 3 : Under these circumstances proper equilibration may require (: Jr� We desIghed the styrene paddle su it may be reused as a wrath
between 1 and 3 da and should be determined by trial and �
g t error. - , c /YG erproof plant marker.Just peel the gel off, (It can be flushed
1 9 - �•`rr?nr Igg; down the drain)and the paddle can then be used and written on
dry ": tit o-c Vii •'^�I' with a felt-tip pen.
RUNNING THE SOLVITA TEST • 1,
For information arid booklets on composting.contact:
1.OPEN FOIL PACKS&INSERT THE PADDLES;The Compost
Woods End®Agricultural Institute
Maturity Test is actually two tests run in the same 4-hour PO Box 297-Mt.Vernon ME 04352
test period.Carbon-dioxide and ammonia are measured sep- phone'107-'183-'1457 Fez 207-293-2488
arately—each by a separate color-indicator"paddle." Email-infofawoodsend.org
, ht[p://www.woodsend.oq
I.Squeeze test:a small handful of compost squeezed lightly should feel wee without produc-
ing any free water.Comport that Is too dry is duty and will not Gump with hod squeezing.
Page 2
Page 3
i
THE COMPOST MATURITY INDEX INTERPRETING SOLVITA'MATURITY INDEX RL TS
the Maturity Index of any compost sample may be Judged in Table I below,using both color As compost ages.it normally goes from a fresh condition(Solvita Index#I-2)to a mature
est results from paddle A and C.This Index number is later used for the interpretations in state(So(vita Index#7-8).The changes may take weeks to several months.The actual time
fables 2,3, 4, and 8. depends on the materials and prevailing conditions during composting.The Maturity Index
"or composts with low ammonia(color chart numbers 4 or 5),the Maturity Index is the same is determined from both Solvita tests and normally increases as both the CO2-rate and
is the CO2-color chart number.However,with high ammonia levels the Maturity Index may be ammonia levels decline and/or disappear.These factors in turn influence how compost is
ess than it appears from the CO2 result.The reason is that ammonia can inhibit microbial perceived and ultimately how it behaves when used.
ictivity,Interfere with the CO2 test and by itself is dangerous for compost use on plants.
fable 2 presents a visual overview of how the two tests together tell something about the TABLE#3: Solvitae Compost Maturity Index and Other Indexes
nature of the compost and the process.
TABLE#1: Compost Maturity Index Computation Table'
use the A and C paddle numbers and and across and down to where the columns meet 1 Maturity EquMhnt fo
CO2-Rats(Paddle"C")Teat Result 4: IF SOLVITA THE APPROXIMATE STAGE THE 4.
/41VO,v`o,
BWvita - I MATURITY OF THE MAJOR Rating
At 1 2 3 4 5 6 7 S - INDEX IS: COMPOSTING PROCESS IS: CLASS IS:
5 Very Low NH3 I 2 3 4 5 6 7 8 Inactive,highly matured compost,very
.14 8. well aged,possibly over-aged,like soil;no <1 2
i?, 4 Low NH3 I 2 3 4 5 6 7 8' limitations for usage "FINISHED" V
COMPOST -
2 High NH; I 1 1 2 3 4 5 6 a grade;few lintatons for usage 1.5 4
1 Very High NH3 I 1 I 1 I 2 3 4 , - Curing;aeration requirement reduced;
6. compost ready for piling;significantly 2.5 8
a.Example:If the NH3 result Is 2,and the CO2 result 6.then the Maturity Index is 4. reduced management requirements
IV .
5 Compost is moving past the active phase
■ of decomposition and ready for curing; „AG7.IVE„ 4 12
reduced need for intensive handling
TABLE#2:Overview of Compost Condition and Solvita Ratings COMPOST
Compost in medium or moderately active
5 possible high C:N 4■ stage of decomposition;needs manage- 6 Ili
or too acidic M$tilre ment
III
.i q Active compost;fresh ingredients,still
s
Ideal ■ needs intensive oversight and management 9 20
j 3 .Curing
Ideal potentially 2 Very active,putrescible fresh compost;
)
inhibited • high-respiration rate;needs very intensive ii 15 24
II
2 fresh mix Active compost 1 aeration and/or turning "RAW"
and COMPOST
low C:N Fresh,raw compost;typical of new mixes;•
1 1 • extremely high rate of decomposition; I >20 >3(
1 Too mu h nitrogen — aution t i o n putrescible or very odorous material
a.DEWAR=Dewar self-healing lest,a standard procedure in regions inc.US.,Europe,Australia
Solvita CO2-Rate(Paddle"c")Color b.Total C02=total mg CO2-C evolved per Solvita test
Result 1 2 3 4 5 6 •
7 ; :8- - c.Cor-Rate=mg CO2-C/gC/day(assumes average carbon content in standard 24hr lab test)
Page 4 Page 5
i
1J
USING THE SOLVITA MATURITY TEST TO DETERMINE Appendix I. INTERPRETING SOLVITA®AMMONIA LESULTS
THE MOST APPROPRIATE USE OF COMPOST PRODUCTS The So!vita Ammonia Test is used primarily to derive the Maturity Index(Table 1). It is
optionally possible, however, to use the test to obtain more information about your sem-
:Solvitas Maturity Index can be used to identify the best use category of a compost.This pie.This is because ammonia Indicates the relative nitrogen content, stability and age of
thod takes into account limitations known to exist with regard to COZ-evolution rate and the material.You can use this information in these other two ways:
mania content.The table also shows typical associations with other known soil amendments.
1.Ammonia m compost can be toxic to some plants,and is often responsible for the
composts should always be checked under actual growing conditions.
-burn effect with certain soil amendments(see Table 4, 5). However,high ammonia
may also indicate a potential positive crop response when applied correctly to field
crops such as corn,sorghum etc.,which are heavy nitrogen feeders.
'Imble 4:Best Use Of Compost
- 2.You can estimate total ammoniacal nitrogen in the sample if you know the compost pH
(Table 6).This provides important clues about the C:N balance and maturity(see
Table 2 and 7).
• TABLE#5: Potential Phytotoxicity Associated with Ammonia Gas
SOLVITA MaterWm � '•col�rNo: 1 _.2. 3 _ Q $ J
MATURITY this class is Potential Phrtotoxkity Is: Very High High Medium Slight None
INDEX /11/1/11/1/1/1/41/1/11/ parable to:
Under normal conditions,ammonia increases during the period of rapid decomposition.
8. ✓ ✓ ✓ ✓ soil&peat-based then declines or disappears as the compost matures.The pH of the compost tends to Col-
mixes _ low this cycle of ammonia,reaching 8.5-9.0 when the ammonia content is high.This
cycle is affected by the balance of available carbon and nitrogen in the compost mix,
7. I V V V V ✓ soil mixes expressed as the C:N ratio.A surplus of nitrogen(C:N<25)can cause elevated ammonia
throughout the composting process,resulting in nitrogen loss and delay of maturity due
6.- compost-soil to elevated pH.Conversely, nitrogen deficiency(C:N>35)results in relatively low ammo-
blends nisi content,and possible delay in maturity due to inadequate supply of nitrogen.
✓ of ✓ ✓ organic TABLE#6: Estimating Total Ammonium-N In Compost(ppm dry basis)
a fertilizers Ammonia Color No: 1 2 3 4 5
4. I ✓ ✓ ✓ ✓ organic Compost pH=7A n/a Na >10,000 8000 <4000
fertilizers I 7.5 n/a >15,000 8000 4000 <2000
3 ✓ ✓ ✓ dehydrated : LO >20,000 10,000 4000 2000 <1000
manures 83 >7000 3000 1500 600 <400
2. ✓ ✓ ✓ raw-waste and 9.0 >4000 1500 700 300 <200 \
most manures )
1. V raw-waste&some TABLE#7:Interpreting Compost Stability based on Ammonium Content
manures
I Ammonia level is: >10,000 4000-10,000 500-4000 100-500 <100
Compost Condition Very Active Med.Active Curing Cured Mature
Please note:There are factors other than maturity that affect how well a
compost will perform with crops.These include,but are not limited to, Table 7 shows how the total ammonium content relates to the condition or decomposi-
nutrient content, nitrogen-release,pH,and salinity.You may wish to non state of typical compost having moderate or surplus nitrogen.If the nitrogen is low
have a full-service compost laboratory such as Woods End analyze the (i.e. high C:N ratio), then ammonia may be low even if the compost is immature(see
sample.Please write to Woods End or see www-woodseruiorg for a full Table 2).Ammonia's pH-raising effect is sometimes counteracted by volatile fatty acids In
list of recommended tests and analytical interpretation guidelines. very active compost,especially if oxygen demand is not being met.O
Page Page 7
6
em em 4311 Highway 66, Suite 4
Longmont,CO 80504
Office(970)535-9318
Fax: (970) 535-9854
April 11, 2002
Mr. Roger Doak
Solid Waste Unit, Compliance Program
Colorado Department of Public Health& Environment
4300 Cherry Creek Drive South
Denver, Colorado 80246
RE: Stromo, LLC Composting Facility Groundwater Monitoring Report
Dear Roger Doak,
The following letter includes the December 2001 and March 2002 groundwater
sampling results and the groundwater elevations and gradient for the Stromo, LLC
Composting Facility located in Weld County, Colorado.
r"` AgPro Environmental Services, LLC.personnel, sampled and recorded groundwater
levels in each monitoring well on December 10, 2001 and March 27, 2002.
Groundwater contours were plotted and depict a groundwater gradient 0.0062 ft./ft.
from east to west across the site.
The groundwater samples were analyzed by Olsen's Agricultural Laboratory, Inc. in
McCook, Nebraska. Analytical results are included in this letter report along with a
summary. The samples were analyzed for Nitrates, EC, TDS, Salts,pH, RCRA
Metals, Potassium and Phosphorus as outlined in the Design and Operations Plan.
Although none of the wells are used for drinking water, the EPA Maximum
Contaminant Limits (MCL) for Drinking Water were used as a relative reference for
comparison only. The analytes exceeding the primary MCL were lead and nitrate in
MW-1, and selenium in MW-1 and MW-2. Selenium concentrations only exceeded
for the December sampling event, while lead exceeded the standards beginning with
the March event. Nitrate concentrations exceeded the MCL for both sampling
events. Based on the results of the groundwater gradient measurements, MW-2 is
cross—gradient from the composting site and lagoon, while MW-1 is down-gradient.
Additionally, our knowledge and experience with groundwater wells in the Hudson
Valley region indicate nitrate levels between 15 and 40 are not uncommon. Total
Dissolved Solids (TDS) exceed the secondary standards in all three wells. This is
also typical of our experience in the Hudson Valley Region.
r^
Apt-all, 2002
Page 2
This letter report and attached data concludes the December 2001 and 2002 first
quarter analyses. The next sample period for the second quarter of 2002 will occur
in July 2002 with reports submitted in December 2002.
Sincerely,
Marshall Massaro
Environmental Consultant
Attachments:
Groundwater Gradient Map, March 2002
Groundwater Sample Results Summary
Olsen's Agriculture Lab Monitoring Well Sample Results, March 2002
Sample Chain-of-Custody
Pc: Cindi Etcheverry, Trevor Jiricek, Weld County Health Department
Tim Smith, StroMo, LLC
f�,
r, eTh
,re‘ Or o.. - 49W.90 LL
Geub tlNr Div. - 4999.37 _)
91
b,
il90
93
42'n
9]
.02
July rot ,Vt
95
99
97
Groundwater Div. . 4997.24 11
(w 3)
0 x00 400
SCALE: 1' - 400'
Morch 2002
AgPro Environmental Services, LLC Stromo, LLC 103<02/02
Environm nfol tssas*g - Enginee inq - Pbneetip Groundwater Gradient Map j
) ) )
StroMo, LLC
Groundwater Monitoring Well Comparison
Monitoring Well# 1 Jul-01 Dec-01 Mar-02
Laboratory Number 13697 I 15226 I 15683
Analyte MCL*(Primary Standards) mg/L ug/L
Arsenic 0.05 <0.9 47.6 14.9
Barium 2 <0.09 33.2 29.0
Cadmium 0.005 <0.09 3 <0.01 l
Chromium 0.1 <0.2 8.7 <1.0 )
Lead 0.015 <0.8 2 23.9
Mecury 0.002 <1.0 <0.1 <0.005
Selenium 0.05 25.3 116.5 31.4
Silver 0.10 (Secondary Standard)*" _ <1.0 _ <1.0 2.0
mg/L
Nitrate 10 2.01 31 32.61
Potassium NA 7 7.2 7
Phosphorus NA 0.02 0.01 0.18
pH 6.5 - 8.5 (Secondary Standard)** 7.5 7.3 7.4
TDS 500 (Secondary Standard)** 871 1532 1896
EC NA 1.36 mmhos/cm 1.36 mmhos/cm 2.96 mmhos/cm
)
*MCL - Maximum Contaminant Level (MCL) - The maximum permissible level of a contaminant in
water which is delivered to any usor of a public water system.
**Secondary Standards- are non-enforceable guidelines regulating contaminants that may cause
cosmetic effects or aesthetic effects in drinking water.
4/11/0210:42 AM
) > )
StroMo, LLC
Groundwater Monitoring Well Comparison
Monitoring Well# 2 Jul-01 Dec-01 Mar-02
Laboratory Number 13698 1 15226 i 15684
Analyte MCL*(Primary Standards) mg/L ug/L
Arsenic 0.05 <0.9 34.6 16.9
Barium 2 <0.09 36.5 34.8
Cadmium 0.005 <0.09 3.3 <0.01
Chromium 0.1 <0.2 <0.1 2.0
Lead 0.015 8.2 14 11.5
Mecury 0.002 <1.0 <1.0 <0.005
Selenium 0.05 45.9 60.1 33.4
Silver 0.10 (Secondary Standard)** 4.0 <0.1 4.0
mg/L
Nitrate 10 30.47 8.3 8.59
Potassium NA 6 5.6 5
Phosphorus NA 0.05 0.18 0.2
pH 6.5 -8.5 (Secondary Standard)** 7.3 7.3 7.7
TDS 500 (Secondary Standard)** 1739 934 1024
EC NA 2.72 mmhos/cm 1.40 mmhos/cm 1.6 mmhos/cm
*MCL - Maximum Contaminant Level (MCL) - The maximum permissible level of a contaminant in
water which is delivered to any usor of a public water system.
**Secondary Standards- are non-enforceable guidelines regulating contaminants that may cause
cosmetic effects or aesthetic effects in drinking water.
4/11/0210:43 AM
)
StroMo, LLC
Groundwater Monitoring Well Comparison
Monitoring Well# 3 Jul-01 Dec-01 Mar-02
Laboratory Number 13999 I 15227 15685
Analyte MCL*(Primary Standards) mg/L ug/L
Arsenic 0.05 18.4 23.9 14.3
Barium 2 <0.09 34.2 40.7
Cadmium 0.005 <0.09 3.6 <0.01
Chromium 0.1 <0.2 <0.1 3.0 )
Lead 0.015 <0.8 5.4 13.4
Mecury 0.002 <1.0 <1.0 <0.005
Selenium 0.05 25.3 26.9 14.3
Silver 0.10 (Secondary Standard)** 3.0 <0.1 2.0
mg/L
Nitrate 10 8.47 1 1.01
Potassium NA 6 6.6 22
Phosphorus NA 0.05 0.31 0.76
pH 6.5 - 8.5 (Secondary Standard)** 7.4 7.6 7.5
TDS 500 (Secondary Standard)** 1226 648 917
EC NA 1.92 mmhos/cm 0.96 mmhos/cm 1.43 mmhos/cm )
*MCL - Maximum Contaminant Level (MCL) - The maximum permissible level of a contaminant in
water which is delivered to any usor of a public water system.
*"Secondary Standards- are non-enforceable guidelines regulating contaminants that may cause
cosmetic effects or aesthetic effects in drinking water.
10:43 AM4/11/02
n
Olsen's Agricultural Laboratory, Inc. e
210 E. First St./P.O. Box 370/McCook, Nebraska 69001 A
Office: 308-345-3670/FAX: 308-345-7880
Website: http://www.olsenlab.com
April 10, 2002
Agpro Environmental Services, LLC
4311 Hwy 66 Suite 4
Longmont CO 80504
Re: RCRA Metals Results
Date Received: March 28, 2002
LAB NUMBER 15683 15684 15685
SAMPLE ID MW-1 MW-2 MW-3
METAL TESTED
Silver, ug/L 2.0 4.0 2.0
Arsenic, ug/L 14.9 16.9 14.3
Barium, ug/L 29.0 34.8
40.7
Cadmium, ug/L <0.01 <0.01 <0.01
Chromium, ug/L <1.0 2.0 3.0
Lead, ug/L 23.9 11.5 13.4
Selenium, ug/L 31.4 33.4 14.3
Mercury, ug/L <0.005 <0.005 <0.005
ug/L=micrograms per liter
<= less than
Res ectfully Submitted,
Bob Olsen
n
WATER ANALYSIS REPORT / -- 1� t
A6F'RO ENVIRONMENTAL
SUBMITTED BY:OLSEN'S
r.N'i I l k _tit (_L.\;
4311 riW'r U{:! ^I.:Y T F 4
ARICULTURAL :..��ntt>l�ON r co r;r;,�;
LABORATORY, INC.
NAME: 4
AG PRO
P.O. BOX 370 McCOOK, NE 69001 (308)345-3670-OFFICE
(308)345-7880-FAX
DATE RECEIVED: ;i, 2 e/2(lt.)c ()'.3(_! DATE REPORTED: L( ; - !',:!()1.).';!
TOTAL
LAB SAMPLE CAR- MAR- CALCIUM NAG- POTAS- . SODIUM NITRATE SULFATE PHOSPHATE ZINC COPPER , MAN- IRON BORON CHLORIDE , DISSOLVED
NUMBER ' IDENTIFICATION i BONATE BONATE NESIUM SLUM as N) ! (us SI (us P( GANESE SOLIDS
' P I' .) /i N'-. f
L 337 5r: 7 y' 32.81 208
DATE ';/r:' 1/ f l'' ,'I! LBSIACRE-FT 1 `1E
SAMPLED V t. I �- �i'fC; 14( 1':i :_'c F1�+.. t; r.. �:(;:,�? F:1 •,
15;)84 MW-.- mg/L 184 31 5 92 8.51 13 /)1
DATE ..�/ 'r;200.7E le 00LRSIACRE-FT 4.37 9 j 14 _'48 23. 1 35t
t-
;;=685 MW -3 m L 77 33 22 01 1 .01 ?8. 91.
`
m ,4; 7. ''(.)U% 1310 LBS/ACRE-FT 208 fit) 59 246 c• • 72 26 2 •7.
. 4�
mg/L
DATE
SPARED: t.MACRE-FT
COLIFORM BACTERIA ADJUSTED
L46 MOST PROBABLE NUMBER HARDNESS, HARDNESS, CONDUCTIVITY LBS.LIME' SODIUM SODIUM SODIUM SODIUM
NUMBER NO.PER IOOIML (as CaCO3 equiv.), (as CaCO3 skquiv.(, pH mmhasicm, AS CaCO3 ABSORPTION ABSORPTION SALINITY HAZARD, HAZARD
TOTAL FECAL MO_ grains/gallon I EC.,, p0 acre foot RATIO,SAP RATIO HAZARD j
SAR SARad
SARadjI j
r LOW
I
165'34 I I F;I'►7 .6 I i�;.. _ I . 71 1 .6° 1 .(73I 'HIGH iG!i I.,..)W '
5685 3:,8. 1 19.2 7,5 3 . '
moIL=MIWGRAMS PER LITER PLEASE READ SPECIAL COMMENTS ON BACK
COMMENTS:
- �` N r TIME OF ANA 'i
:.��II' �..� i t►r :F L l Zi METHOD ri=:1Lr USED
NITRAFK .',./29/2C0') @ 1414 EPA 1y`�'i METHOD '35:i. 2
(}II '.;/2'.4,'20l)2 @ 084.5 EPA 19?9 METHOD 600,4 -79-020
- WAS F.:-1[J 1 u.: 13L.ir; . : FROM l_./tis�'•or<I^,-1-I: Ri LISLE) F-OR SAMPLE' YES •
•1—A F2F: ,Ux'kI.:` -,fJALYs.l.:.} OF NIT ATE AND cOi..Ii-ori BACTERIA IN DIVHCINi:I Wft'i'F..P? wiTNlw 48 HOOPS Af lER C-oLL.Fu'tION.
•
CLIENT NAtviE:Ac no aienievfiTnt Fag S7J .m°, £4. C •
CHAIN OF CUSTODY RECORD :
ADDRESS: 93/) .llwy a6/Su2TE 4 Olsen's Agricultural Laboratory
L.ON AIOA17; CO f 05 04' 210 East First Street / P.O. Box 370 / McCook, Ne 69001
Office (308) 345-3670 - FAX (308) 345-7880
: PHONE: - q70-535- '3IS Fix q1o=S. s--ReS4
,.project NamelNumber Project la n ANALYSIS REQUESTED
6eaud0WITER Ivens STRO MO, t.LC
Sam�,p(lerssSign ire: .. - `o m 4j7/ =Kr
Al anisne— 7 P
NoDateT Comp. Grab Sample IdenGticafion 6VA
3/27&2O5 X M,w— i 2 X X X X X X
3/niazryas N MW- .z Z X XXN X X X .X
/3/O X Mw -3 Z X XX X X4XX X
- - .
p.
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CHAIN OF CUSTODY RECORD
ADDRESS: t}3/1 /fi./ s6> SurTE it Olsen's Agricultural.Laboratory
„ t.ONGfo t/T, co -`0SO4 210 East First Street / P.O. Box 370 / McCook, Ne 69001
Office (308) 345-3670 FAX (308)345-7880
PHONE: qv—ass-13w MA: 170-&35-WSJ
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