HomeMy WebLinkAbout20101535.tiff •
DESIGN-OPERATION PLAN
•
•
2010-1535
ill
Waste to Energy Design and Operation Plan
Developed in accordance with Colorado Solid Waste Regulations,
6CCR 1007-2 Sections 11 and 14
For
Heartland Renewable Energy, LLC
SE '' of Section 25 T4N R65W
Operated by Colorado Green, LLC
A subsidiary of Heartland Renewable Energy, LLC
AG
• PRO
Prepared by
AGPROfessionals, LLC
4350 Highway 66
Longmont, CO 80504
(970) 535-9318
April 2009, Original
July 15, 2009, Revision 1
September 15, 2009, Revision 2
February 19, 2010, Revision 3
at
Heartland Renewable Energy Design and Operations Plan
•
Table of Contents
Table of Contents 2
Engineer's Certifications 4
Executive Summary 6
1.0 Introduction 7
(A) Owner/Operator 7
(B) Land and Legal Description 7
2.0 Physical Property 8
(A) Surface 8
(B) Subsurface 8
3.0 General Site Plan 10
(A) Access 10
(B) Signage 11
(C) Security 11
(D) Construction 11
(E) Surface Water & Groundwater Protection 11
4.0 Process 14
(A) General Anaerobic Digestion 14
(B) Inputs/Feed stock 14
(C) Receiving 17
• (D) Materials Processing Description 17
5.0 Digester(s) 19
(A) Construction 19
(B) Equipment 20
(C) Flow 22
(D) Start-up Process 22
6.0 Outputs 22
(A) Liquid materials 22
(B) Solids Materials 22
(C) Re-Introduced Materials/Process 22
(D) Byproducts 22
(E) Materials Storage 24
(F) Reintroduced Material 25
7.0 Natural Gas/Methane 26
(A) Processing 26
(B) Construction 27
8.0 Air 27
(A) Dump Flares 27
(B) Generator(s), Engines, Compressors 27
(C) Emissions 27
9.0 Other Permits/Agencies 28
(A) Weld County Special Use Permit 28
• (B) Weld County Certificate of Designation 28
(C) Water Quality 28
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Heartland Renewable Enerpv Design and Operations Plan
• (D)Air Quality Permits 28
(E) Colorado Department of Agriculture 28
10.0 General Operation 28
(A) Description of General Daily Activities 28
(B) Employees/Staffing 29
(C) Maintenance 31
(D) Emergency Response 32
(E) Emergency Contact Info 32
(F) Contingency 32
11.0 Documentation, Records & Reporting 32
(A) Recordkeeping 32
(B) Reporting 32
12.0 Nuisance Control &Management 33
(A) Dust 33
(B) Odor 33
(C) Windblown Materials & Debris 33
(D)Pest Control 33
13.0 Closure 33
(A) Operational Maintenance & Temporary Closure 33
(B) Closure 34
(C) Post-Closure Care 35
Appendix 37
• Proposed Site Layout
Vicinity Map
Existing Site Map
Legal Description and Easement Map
Preliminary Drainage Report
Custom Soil Report
Well Map
Well Registrations
Flood Plain Map
Preliminary Geoteclmical Report
Monitoring Well Installations
Groundwater Monitoring Information/Plan
Material/Tanks Summary
Equipment Summary
Waste Characterization Plan
Contingency Plan
Fire Protection
Odor Management Plan
Sampling
Sample Results
ATI Drawing Packet
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Heartland Renewable Energy Design and Operations Plan
• Engineer's Certifications
I hereby certify that all portions of the site investigations and preliminary drainage design of
Heartland Renewable Energy have been performed under the supervision of, reviewed by, or
preformed by this professional engineer, licensed to practice in Colorado. To the best of my
professional knowledge,judgment and belief, these plans meet the provisions of 6 CCR 1007-2
Section 14, Weld County storm drainage criteria, and the Weld County Use by Special Review
and Site Plan Review Preliminary Drainage Report Outline.
Travis Hertneky, PE
• AGPROfessionals. LLC.
•
AGPROfessionals,LLC 4
AppliedTech n olog ies Applied Technologies,Inc.
• Engineers-Architects 16815 West Wisconsin Avenue
Brookfield,Wisconsin 53005
Fax 262-784-6847
Telephone 262784-7690
www ati-ae.corn
February 17, 2010
Colorado Department of Public Health and Environment
4300 Cherry Creek Dr. S.
Denver, Colorado 80246-1530
Re: Heartland Renewable Energy, LLC
Waste-to-Energy Project
Weld County Colorado
•
Dear Sirs,
I hereby certify that mechanical and structural portions of the permitting set for the
referenced project related to the waste-to-energy processes at the Weld County site have
been performed under the supervision of, reviewed by, or performed by this professional
engineer, licensed to practice in the State of Colorado.
Sincerely,
Applied Technologies, Inc.
/den: 4 • 4
Robert C. Janke, P.E. `¢PE-39924 •
ONA1.F '`
•
1:\4586\WORDPROC\MISC\Certifcation Itr.doc
Heartland Renewable Energy Design and Operations Plan
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Executive Summary
Heartland Renewable Energy, LLC in conjunction with Colorado Green, LLC is proposing an
anaerobic digester facility located in southeast Weld County, Colorado. Anaerobic digestion of
organic wastes in a controlled environment yields environmentally sound products for beneficial
reuse. This facility will utilize agricultural wastes (including cattle manure) from confined
animal feeding operations, organic wastes from local meat processing facilities, facility wastes
from restaurants, food and beverage processing establishments, yard and horticultural wastes,
and various other forms of green wastes.
The digestion process will yield two major outputs. A methane rich gas stream which will be
refined and processed to meet the quality specifications for interstate pipeline gas for injection
into the local high pressure natural gas transmission pipeline. A second output will be a
composted solid by-product, superior in certain respects to traditional compost and soil
amendments for horticultural and agricultural applications. This product will be marketed to
various distributors and end users.
The process of using cattle manure, food wastes and other organic wastes as feed stock for the
digester facility will preclude release of pollutants to the environment, and specifically, will
reduce the emission of significant amounts of nitrous oxide to the atmosphere. Nitrous oxide is a
• greenhouse gas which is emitted from natural decomposition of manure in an air environment.
This natural decomposition yields an-environmental impact that is approximately 300 times more
detrimental than carbon dioxide in regards to the negative effects of the upper atmosphere.
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Heartland Renewable Energy Design and Operations Plan
•
1.0 Introduction
This Design and Operations Plan (D&O) has been prepared pursuant to the Colorado
Regulations Pertaining to Solid Waste Disposal Sites and Facilities 6-CCR 1007-2 (Regulations),
Section 14 for Class 1 Composting Facilities and Section 11 for Waste-to-Energy Facilities, for
review and approval by the Colorado Department of Public Health and Environment (the
Department) and local governing body. The intent of this D&O is to ensure protection of the
environment and citizens of Colorado by identifying the design, control, and management
measures to protect ground and surface waters, prevent nuisance conditions, and properly
decommission the site in the event of a facility closure.
Heartland Renewable Energy, LLC (HRE) in conjunction with Colorado Green LLC, is
proposing herein an anaerobic digestion facility that will produce methane gas to be injected into
the High Plains Natural Gas Pipeline and an organic solid by-product. Whereas there are no
specific regulations for anaerobic digesters, a combination of a Class I Composting Facility and
Solid Waste-to-Energy Facility permit will be required. This facility shall be located in
southeastern Weld County, CO. It will be operated by Colorado Green, LLC or contracted to a
well qualified company(for example, Southwest Water, CH2M Hill, OMI) that is in the business
•
of contracting to staff, operate and maintain wastewater treatment plants.
(A) Owner/Operator
Owner/Operator: Colorado Green, LLC*
Project Developer: Heartland Renewable Energy, LLC
2400 Trade Center Avenue, Ste 201
Longmont, CO 80503
(303)-485-0600
Contact: George Howard, Managing Member- HRE, LLC
*Colorado Green, CG LLC(CG) is an affiliate of Heartland Renewable Energy, LLC(HRE);
HRE is the developer of the proposed project and holds a majority interest in CG.
(B) Land and Legal Description
Parts of the SE 'A of Section 25, T4N, R65W
This facility is located approximately 1/4 mile northwest of Weld County Road 49 and Weld
County Road 40 intersection and approximately 7 miles southeast of the town of LaSalle, CO.
The site encompasses a total of 80 acres. The digester facility footprint is approximately 30
•
acres. Easements are identified on a map in the appendix.
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Heartland Renewable Energy Design and Operations Plan
• (a) (Appendix) Legal Description and Easement Map
2.0 Physical Property
(A) Surface
I. Vicinity Map
The site is not underlain by any abandoned underground coal mine workings, as determined by
the Colorado Geological Survey's Coal Mine Subsidence and Land Use in the Boulder-Weld
Coalfield, Boulder and Weld Counties.
2. Existing Site Map
The existing gas wells have a one hundred fifty(150') foot setback and the tank batteries have a
two hundred (200') foot setback as required by the Colorado Oil and Gas Conservation
Commission. Additionally, a two hundred (200') foot buffer has been granted to Noble Energy
and Anadarko for drilling operations and well servicing. These setbacks can be offset, as shown
on the map, to accommodate the Heartland Renewable Energy operations and are not required to
be centered on the well. There are no permanent structures, which is the only use restriction
within the setback areas.
(a) Lakes/Streams
• There are no known lakes, rivers, streams, springs, or bogs onsite or within one-half mile of the
facility boundary.
(b) Floodplain
This site is not located within a mapped 100 year floodplain based on a review of the FEMA
floodplain map of the immediate area, please see Flood Plain Map.
(B) Subsurface
1. Groundwater
(a) Groundwater
Groundwater monitoring at the proposed Heartland Renewable Energy site has been in place
since August of 2009. Three groundwater monitoring wells were professionally installed at
dispersed locations on the site. Two wells are located near the northwest side of the facility and
one near the southeast corner. Immediately following drilling, only one well had static water
present.
Groundwater elevations have subsequently been measured twice to establish groundwater
gradients. The two northern wells demonstrated a static water elevation with the southernmost
• well being dry both times. Analysis based on groundwater depths relative to surface elevation
indicates that groundwater flows consistently in the northwest direction between monitoring
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Heartland Renewable Enerpy Design and Operations Plan
• wells MW#01 and MW #02 at a 0.5% gradient. Due to the fact that static water was only present
in two wells, the true direction of the flow path cannot be determined, however these indicate at
least a northwestern gradient. Groundwater monitoring sampling will continue being taken
every other month for the remainder of 2010 to determine a baseline of data for evaluation as the
Heartland Renewable Energy project continues to develop.
A Ground Water Monitoring Plan has been developed to adequately monitor and analyze the
ground water throughout the construction and operation of the facility. Please see appendix for
Ground Water Monitoring Plan.
(b) (Appendix) Groundwater Monitoring Information/Plan
A commercial well permit (Permit#280709) for the facility was received from the Colorado
Division of Water Resources, Department of Natural Resources. The well will be located to the
north of the facility and used for facility operations.
(c) Groundwater Well Location Map
Please see the Wells map for all wells within one mile of the facility boundary. Please see
Existing Monitoring Wells for installed monitoring well locations.
• (d) (Appendix) Well registrations
(e) (Appendix) Monitoring Installations
2. Subsurface Investigation
(a) Boring locations
A preliminary geotechnical site exploration was conducted by Soilogic in February 2009 for the
existing site. A total of six bores were drilled to a depth of 25 feet. No groundwater was
encountered in any of the bore holes. Please see the Geotechnical Report for a map of the boring
locations and associated findings. In August 2009, three additional bores were drilled by High
Plains Drilling for the purpose of establishing groundwater monitoring wells. They were drilled
to depths of 36 (MW01), 54 (MW02), and 30 (MW03) feet. Groundwater was encountered at 44
feet in MW02. Please see boring logs and well permit applications in the appendix under
Monitoring Well Information.
(b) (Appendix) Preliminary Geotechnical Report
(c) Site Geology and Hydrology
This site is located above the Laramie-Fox Hills Aquifer. This aquifer occurs primarily in the
• lower sandstone units of the Laramie Formation and the upper sandstone and siltstone units of
the underlying Fox Hills sandstone and covers nearly 7,000 square miles. The geological
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Heartland Renewable Enerpy Design and Operations Plan
• formations of this aquifer are primarily composed of Cretaceous and Tertiary sandstone,
conglomerate and shale. The thickness of the aquifer ranges from zero at the boundary to
between 200-300 feet in the central part of the basin. The Laramie Fox Hills Aquifer is underlain
by nearly impermeable Pierre shale and on top consists of fine, to very fine, grained sandstone or
siltstone imbedded in the shale. Groundwater within the Laramie-Fox Hills Aquifer tends to
contain small amounts of dissolved solids with concentrations ranges from 200 to 2,000
milligrams per liter. Some gases, such as hydrogen sulfide and methane exist within the aquifer.
The edges of the aquifer tend to have hard water, consisting of a sodium bicarbonate or sulfate
type.
Depth to groundwater within the aquifer generally ranges within 0 to 250 feet. The preliminary
geotechnical report did not indicate any groundwater within 25 feet of the soil surface.
Subsequent drilling identified water at a depth of 44 feet in the center of the site. Several nearby
wells indicate groundwater levels range from 70-200ft.
(d) Site Soils
Approximately three to six inches of topsoil and vegetation were encountered at the surface
during drilling. Beneath that was light brown to brown silty sand and sandy lean clay. The three
main layers were classified as a fine silty sand, then sandstone to clayey sand in places, with a
claystone layer existing between 25-50 feet. The soils were generally medium dense to dense and
medium stiff to stiff. Occasional zones of loose sand were encountered throughout the borings.
The silty sand and sandy lean clay showed low swell potential. NRCS's custom soil report
classified these soils as Valent sand and Vona loamy sand. Runoff potential from this site is
• considered to be low because the soils are classified as well drained to excessively drained.
Please see the Soils Report for more specific information regarding the soils.
(e) (Appendix) Preliminary Drainage Report: Soils
3.0 General Site Plan
(A) Access
The facility's service area will include the Denver Metro Area and Northeastern Colorado. The
major transportation corridor for the Denver metro area will be Interstate 76 east to Weld County
Road 49. The major transportation corridor for Northeast Colorado will be Colorado Highway 34
to Weld County Road 49. The facility will be accessed from Weld County Road 49. The
entrance to the facility will be located approximately one quarter mile north of Weld County 40
on Weld County Road 49.
An operations building with offices, a laboratory, employee area, and equipment maintenance
areas are located in the southeast comer of the facility along the entrance driveway. A
maintained access from WCR 49, will be constructed to the facility entrance. Traffic will enter
the facility on the east border of the facility and circulate in a counterclockwise pattern. Parking
spaces are available in front of the operations building. A gated access road will be created to the
• north for internal traffic only, to and from the Shelton Dairy
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Heartland Renewable Energy Design and Operations Plan
• (B) Signage
Adequate signage shall be placed at the facility entrance including the facility name, emergency
contact information, traffic control information and materials that will and will not be accepted.
(C) Security
A six foot high chain link fence will surround the Waste to Energy facility with a security
controlled entrance. The entire site perimeter(80 acres), including the soil amendment area will
be fenced with barbed wire. Either an ID card or a manned booth shall ensure no unauthorized
access or material delivery will enter the site.
(D) Construction
HRE shall implement an approved quality assurance and quality control plan in constructing all
engineered structures at the facility. The quality assurance and quality control plan shall be
reviewed and approved by the Department and local governing authority for all engineered
structures at the facility prior to construction. A Construction Quality Assurance (CQA) Plan and
construction drawings shall be submitted to the Department for review and approval, at a
minimum, sixty(60) days prior to construction.
A construction certification report shall be submitted to the Department for review and approval,
at a minimum, sixty(60) calendar days prior to acceptance of feedstock, liquid waste or bulking
material.
• The owner or operator of HRE shall provide copies of the construction record drawings for
engineered features at the site and a report documenting facility construction, including the
results of observations and testing carried out as part of the construction quality assurance plan,
to the Department and local governing authority.
HRE shall not commence operation until the Department has determined that the construction
has been completed in accordance with the approved engineering report/plans and specifications
and has approved the construction documentation in writing.
All engineered features of the facility design shall be reviewed and sealed by a Colorado
registered professional engineer.
(E) Surface Water & Groundwater Protection
1. Run-on, Run-off
Surface water flow onto the facility will be controlled by a combination of natural terrain,
diversions, and site re-grading as outlined in the preliminary drainage report. The natural surface
drainage in the surrounding area of the site drains toward the northwest towards Beebe Draw.
All potential run-on will either be impounded in the natural sand hill depressions or be diverted
around the property along the east and northern edge of the property. The site shall be re-graded
as needed to ensure run-off from the site itself will flow to the storm water pond located in the
• northwest corner of the facility. The diversions will be designed and constructed to divert the
peak discharge from the 25-year, 24-hour storm. The attached site map, indicates the
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Heartland Renewable Enervy Design and Operations Plan
• preliminary grading contours and demonstrates how all runoff will flow toward a storm water
retention pond to be constructed in the northwest corner of the property. The retention pond will
be constructed to hold the volume of the 25-year, 24-hour storm runoff event, plus runoff from
normal precipitation events.
2. Wastewater Ponds
This facility will have a total of six lined storage ponds. The storm water pond with a settling
basin will be located in the northwest corner of the site and will serve as the collection structure
for storm runoff The storm water pond shall be dewatered within thirty(30) days of a storm
event so that the design storm runoff storage capacity is restored. The preliminary drainage
report that outlines the stormwater management system in more detail is included in the
appendix.
Five additional ponds will be constructed directly to the west of the digester facility. The two
reject water storage ponds will be used to receive and store filtrate from the water treatment
process. The two effluent storage ponds will receive and store raw effluent from the clarifiers,
wastewater from the stormwater pond, and piped wastewater from off-site. These ponds will be
designed in accordance with Section 9 of the Solid Waste Regulations as Class II impoundments.
The Ground Water Monitoring Plan has been implemented and ground water monitoring wells
are located to enable detection and assessment of the controlled seepage impact on ground water.
A Contingency Plan is in place if a leak is detected. The dilution water pond will be utilized as a
storage pond for treated water until it can be utilized to dilute the feedstocks in the headworks.
• All of the ponds construction will include the installation and testing of a geo-membrane liner
constructed from either 60mi1 High-density polyethylene(HDPE) or 30mi1 XR-5. All ponds will
be designed and maintained to have a minimum 2 feet of freeboard measured from the lowest
elevation at any given time. The effluent, dilution and reject storage ponds will be elevated
slightly to ensure no storm water runoff will directly enter these ponds.
(Appendix) Preliminary Drainage Report
3. Construction, Testing, Liners, Certification
Upon completion of the ponds, a construction certification report will be prepared and submitted
to the Department documenting, at a minimum, liner type, installation procedures, certification,
and construction specifics for the impermeable liners.
4. Groundwater Monitoring and Leachate
A composting facility which has not received a specific waiver from ground water
monitoring from the Department and the governing body, shall submit a Ground Water
Monitoring Plan in accordance with Subsection 2.2 of these Regulations.
Please see Groundwater Monitoring Plan in appendix
•
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Heartland Renewable Energy Design and Operations Plan
• (Appendix) Groundwater Monitoring Information/Plan
5. Low Permeability Workpad
All raw feed stocks will be kept in enclosed tanks that have secondary containment except for the
dairy effluent water which will be stored in the Effluent Storage Pond . All in process material
will be in a concrete digester that has a secondary containment and leak detection system
installed outside the floor and walls of each digester, The secondary containment and leak
detection system will be composed of a two inch sand layer, a two inch rigid insulation and a
containment membrane designed to flow to a sixteen inch containment sump sandwiched
between geotextile fabric. The storm water pond, effluent ponds, dilution water pond, and reject
water ponds shall be lined with an impermeable synthetic liner.
The site will be graded sufficiently with a slope of 2-2.5% percent, so any runoff from the soil
amendment areas will run directly to the pond. Groundwater is over 30 feet deep and has a
relatively impermeable claystone layer above it. With regards to the site characteristics,
monitoring wells, impermeable liners and a leak detection system, HRE believes a low
permeability workpad is not necessary.
However, a non-permeable work pad will be located in the soil amendment delivery building
where the de-watered digestate (soil amendment) will be contained after removal from the
digesters, and prior to being re-located to the soil amendment storage area. The concrete pad
• within this building will be approximately 60 feet wide and 75 feet long. This non-permeable
concrete pad and delivery building will contain daily batches of the initial 90-days of production
of de-watered digestate, and will allow for adequate storage of this product while it is being
analyzed, and before moving it to storage for shipment. If the quantity of the digestate surpasses
the storage capacity of the building during this time, HRE will transfer the digestate to an
approved Class 1 Composting Facility or landfill until the review period is complete.
The anticipated dry matter of the digestate will be 35% to 40% (DM basis by weight) and there
will be no 'free water' excreted from this product when conveyed to the soil amendment delivery
building. At least three composite samples will be collected and tested for the constituents listed
in Table 1 in Section 14.5.1 of the Regulations. The results of this testing procedure will
substantiate HRE's waiver request for a low-permeable work pad. A waiver request for a low-
permeable work pad for the area designated as soil amendment storage will be submitted to the
Division and WCDPHE for approval, to be supported by the full analysis of the de-watered
digestate product.
The non-permeable work pad described for this soil amendment delivery building will be
constructed of concrete with an impermeable synthetic membrane layer placed beneath the
concrete.
•
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Heartland Renewable Energy Design and Operations Plan
• 4.0 Process
(A) General Anaerobic Digestion
This gas production facility uses proprietary anaerobic digester technology for producing
commercial volumes of a methane-rich gas. The gas is scrubbed of impurities and the clean
methane injected into a natural gas pipeline. The term"anaerobic digester" refers to an airtight
vessel in which various organic wastes (such as feedlot and dairy manure, food wastes,
agricultural wastes, and other digestible feed stock) are placed and in which naturally occurring
microbes "digest' the feed stock. The microbial digestion by-products include methane and
carbon dioxide that are captured and processed.
In addition to generating a needed domestic energy source, the gas production facility will have
other significant benefits, including:
• Yielding a compost like by-product which is superior in certain plant growth qualities
to conventionally produced compost and can be used in agriculture, land reclamation,
landscaping, turf topping, gardening, nursery operations, greenhouses, erosion
prevention, and erosion mitigation.
• By using cattle manure, food wastes and other organic wastes as feed stock, the
digester facility will help preclude release of pollutants to the environment and, in
particular, will preclude the emission of significant amounts of nitrous oxide to the
• atmosphere which is a greenhouse gas with an environmental impact that is
approximately 300 times more severe than carbon dioxide. The nitrous oxide arises
from manure spread on land or otherwise exposed to air through the relatively slow
oxidation of the nitrogen in the manure.
(B) Inputs/Feed stock
1. Type I, II & III Feed stock
HRE will be classified as a Class I composting facility, which enables the facility to take Type I,
II and III feed stock in quantities only limited by site. These feed stocks include,but are not
limited to, agricultural crop residues, manure, untreated wood wastes, yard, paper and green
wastes, animal material, animal mortalities, food wastes, fats, oils, and grease.
2. General Discussion on Heartland Inputs
Feed stocks:
HRE's facility will only receive and process the following feed stocks:
-food processing residuals (fats, oils, grease(FOG), carbohydrates, proteins);
•
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Heartland Renewable Energy Design and Operations Plan
• -human food discards from grocery operations including culled and spoiled produce, outdated
juices, bakery products, cardboard not coated with plastic, dairy products but excluding all
meats;
-cattle manure (dairy and feedlot;
-plant matter including agricultural products and agricultural plant residues (for example, spoiled
silage and animal feed);
-post-consumer food discards, including paper and other bio-digestible materials from
restaurants and other food service facilities.
-slaughter plant waste
-brewers waste
HRE's digester facility will not accept bio-solids, or any other solids, processed solid wastes, or
sludge other than those described above. The above feedstocks do not constitute `broad
categories' of waste streams, nor is this facility a solid waste landfill or transfer station, thus
Section 2.1.2 of the Regulations should not apply.
The food processing residuals will be from animal processing facilities and other food processing
plants, including breweries. These food processing residuals will also include the contents of
grease traps from food handling facilities, fryer oil from cooking equipment, and fryer oil
emulsion (the residue from separating used fryer oil from water and entrained food particles.)
A Waste Characterization Plan has been developed and provided as an appendix.
(a) (Appendix) Waste Characterization Plan
Chemicals
# Chemical Name Description Process Name
1 Activated carbon Media adsorbent Odorous air scrubber
2 Alum Coagulant Waste water treatment
3 Diesel Fuel General
4 Elemental sulfur byproduct Hydrogen sulfide removal
5 Ferric chloride Flocculant Clarifier
6 Nutrimix 34/32 Nutrient supplement Hydrogen sulfide removal
7 Polymer Anti-scalant Waste water treatment
8 Polymer Flocculant Waste water treatment
9 Propane Fuel General
10 Proprietary Media adsorbent Carbon dioxide removal
11 Sodium bi-sulfate Neutralizer Waste water treatment
12 Sodium hydroxide pH control Hydrogen sulfide removal
13 Sodium hydroxide pH control Waste water treatment
14 Sodium hypochlorite Biocide Waste water treatment
15 Sodium hypochlorite Disinfectant NPW treatment
16 Various Oil/Lubricants General
• The three main additives used in various places in the process and are described below:
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Heartland Renewable Energy Design and Operations Plan
• The first of these is caustic soda (sodium hydroxide) for the following purposes: (1) to neutralize
an acid condition that could develop in the stored food waste slurry prior to its injection into the
digesters; (2) as a makeup solution to the facility process (Paques) that removes hydrogen sulfide
(H2S) from the FIRE facility's biogas by bacterial action which converts the H2S to elemental
sulfur (a fertilizer that will be marketed); and (3) for neutralization of any potential acid
conditions developing in the digesters from over feeding the digester system in a given time
period.
The sodium hydroxide injection into the digesters or food waste slurry will neutralize any excess
acetic acid formed during the digestion process, with the sodium hydroxide converting to sodium
acetate which will be consumed by the digester bacterial population. The small amount of
sodium acetate that may remain in the digester effluent will partition between the solid (effluent
Total Suspended Solids) and liquid (effluent) phases. A small amount of sodium acetate will be
found in the soil amendment and a small amount will remain in the wastewater to serve as a
nutrient for the aerobic microbes in the downstream effluent treatment system. Sodium acetate is
nonhazardous, and in fact is added to foods as a seasoning in the form of sodium diacetate; a 1:1
complex of sodium acetate and acetic acid.
The second additive is ferrous chloride whose purpose is to remove hydrogen sulfide (H2S) in
the digester effluent by its reaction with the hydrogen sulfide that results in the formation of
ferrous sulfate and iron sulfide (which precipitates out of the digester effluent). This treatment
• reduces the potential for H2S emissions. The iron sulfide precipitate will be periodically
removed along with other settled materials from within the digesters. Some maybe incorporated
in the soil amendment recovered from the digesters, and much of it will be in the water going to
the Recycle Water Treatment System for removal. Any iron sulfide removed from the water will
be marketed to an end user or properly disposed of in a permitted sanitary landfill.
The third additive used in the FIRE facility will consist of a cationic polymer compound added to
the digester effluent as part of the effluent water treatment and recycle process for the purpose of
capturing soil amendment "fines" by agglomeration prior to the clarification step in the effluent
treatment. This class of compounds is identical to what is used in sewage treatment plant
processes and is present in bio-solids which other operations normally 'land apply'. These
polymer compounds in concentrated form pose no human or environmental hazards.
3. Volumes/Quantities of Materials
(a) (Appendix) Material/Tanks Summary
4. Hazardous Materials
(a) Contingency
A visual inspection of each load shall be done upon entrance to the facility. Any unacceptable
materials shall be rejected and returned to the generator or taken to a properly permitted facility.
•
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Heartland Renewable Energy Desien and Operations Plan
• (C) Receiving
1. Cheek-In
Each incoming load will be stopped at the entry gate. The required recordkeeping and a visual
screening process for hazardous or unacceptable materials will be conducted. Material from each
generator will be randomly tested at the on-site laboratory for analysis of any unacceptable
materials.
2. Storage
All feedstocks will be delivered, processed and conveyed through the system and placed in
above-ground steel tanks for storage as in-process material. All receiving hoppers will be
constructed of welded steel, and will be located at ground level, and within a concrete structure
to facilitate repair and maintenance of mechanical equipment and as secondary containment.
Please refer to Table 1.0 for a description of vessel type and capacity.
Table 1.0
Stored Material Tank :UpsQuant. Size Total Volume :Ups
FOG Storage Tank 33 1 32'D x 48'H 302,769 gal Bolted steel,epoxy lined,steel roof,concrete floor
SW&FW Storage 36 2 38'D x 40'H 706,260 gal Bolted steel,epoxy lined,steel roof,concrete floor
Tank
• Blend Tank 38 1 38'D x 32'H 283,148 gal Bolted steel,epoxy lined,steel roof,concrete floor
Manure Tanks 31 &32 2 38'D x 40'H 706,260 gal Bolted steel,epoxy lined,steel roof,concrete floor
FOG=Fats,Oils,&Grease;SW=Slaughter Waste;FW=Food Waste
(D) Materials Processing Description
Tank sizing, storage time and calculations are included in the appendix.
(a) (Appendix) Material/Tanks Summary
(b) (Appendix) Containment Calculations
1. Manure Handling and Pumps
Manure feed stocks from dairies and feedlots will be delivered to a receiving/storage building.
This building will have a concrete floor and be enclosed. Trucks will back into the bay (three
lanes) and dump directly into the steel hopper. The material will then be augured onto a
conveyer that takes it to the tanks. Manure delivered from dairies as a liquid solution will be
dumped directly into a liquid manure wet well. Manure feed pumps will transfer the liquid
manure from the well into the manure tanks. Each manure tank will have two agitators to
• homogenize the two manures. From the manure tanks, the blended manure is pumped via the
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• manure feed pumps through the manure heat exchanger directly into the front end of the
anaerobic digesters at a controlled feed rate.
2. FOG Handling, Heat Exchanger, and Pumps.
FOG from restaurants and other food handling establishments shall be delivered via tanker trucks
to the FOG waste building and pumped into the FOG wet well. FOG transfer pumps will
immediately pump it into a heated FOG storage tank with a single agitator. The FOG feed pump
will pump it to the blend tank.
FOG feed pumps will be variable speed and maintain a preset, but adjustable flow rate. FOG
flow to the blend tanks will be metered. Tank level and temperature will be monitored. Odor
control will be provided by a two-stage scrubber. The two stage scrubber for odor control will
remove any H2S and any other odor that comes off the liquid. The scrubber is a dried granule bed
with two different sized medias through which the air flows for removal of the odors.
3. Food Waste/Slaughter Waste/Food Slurry Handling, and Pumps
• Food waste from various sources will be delivered in dump trucks and emptied onto a concrete
pad and immediately moved directly onto a food waste screw conveyor. The waste will then be
augured into a grinder. It will then be transferred into the SW/FW tank.
Slaughter waste from animal processing facilities will be received from trucks and conveyed via
a screw auger into a wet well with an agitator. The slaughter waste will then be transferred
through a slaughter waste slurry grinder/transfer pump and into the SW/FW storage tank.
Food slurry will be pumped from the truck directly into a food slurry wet well, then transferred
by the food slurry transfer pump into the SW/FW tank.
All three materials are then pumped from the SW/FW tanks via a transfer pump into the blend
tank.
4. Blend Tank
FOG, SW and FW, plus heated dilution water (from the dilution water pond), will be added to
the blend tank. Tank level, temperature, pH and suspended solids will be monitored. Target
suspended solids level will be 12 percent, dry weight. Chemical addition may be provided as
required to adjust pH (up or down), micronutrient levels, as well as to adjust uniformity) to the
blend tanks. The micronutrients are added to help stimulate the biological activity of the
biomass. Emulsification, particularly of the FOG, may be done by both chemical and by
mechanical means. The blend tank will typically be operated in a continuous mode. From the
• blend tank, blended waste feed pumps (3) will pump the mixture into the anaerobic digesters at a
controlled feed rate.
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• 5. Breakdowns/Repairs
The biomass contained within the anaerobic digesters undergoes a series of biochemical
processes as the anaerobic bacteria digest the material as it transits from the inlet end to the exit
end of the digester. The digesters are living systems, similar in many ways to the rumen of a
cow, and can be upset by an imbalance in the system. Each of the twenty four digesters will be
operating in parallel and independent of each other. In the event of an upset, the digesters do not
stop the biological process. The production of biogas can slow over a period of days if no new
feed stocks are added, the pH is not adjusted as needed, or other appropriate action taken.
Monitoring the conditions within the digester by the control system will be done to anticipate
changes within the system to prevent such upsets. At any time a single digester maybe down for
repair or routine maintenance, including some empty digesters to facilitate operational flexibility.
6. Secondary Containment
All above ground tanks shall have secondary containment. A low permeability compacted clay
pad will be placed under each tank. An earthen berm or concrete wall designed for 110%
containment of the largest tank within a feed material storage/blending area shall be constructed.
The tanks and containment area will be visually inspected for leaks on a monthly basis. In the
remote chance of a tank failure, operations staff will seal up the tank and remove the contents
from the secondary containment area immediately, following the procedures described in the
contingency plan.
Each wet well used for feedstocks will have secondary containment similar to the digesters. A
• containment membrane will be installed, with a geotextile fabric overlayed, and then an
aggregate base (sand or gravel) will be placed over these layers. The floor will be sloped to drain
to a sump at the end. A monitoring well will be visually inspected for leaks monthly.
5.0 Diqester(s)
(A) Construction
Twenty four covered, rectangular concrete digesters will be provided as two banks of twelve
digesters. The digesters will be designed as plug-flow reactors with approximately a 5:1 length-
to-width ratio, a 24-day residence time, and the total feed to all of the digesters will be at
approximately 850 gallons per minute (gpm) feed rate. Dimensions of each digester will be 200
feet long, 40 feet wide and 24 feet deep. The depth of the mixture in each digester will be
approximately 20 feet. Digesters will operate in a mesophilic temperature range (95 degrees to
100 degrees Fahrenheit) and will be covered.
Digester covers will consist of a single membrane manufactured from polyester yarn with a PVC
coating. The membrane will be designed for air/gas-supported structures and contain ultraviolet
(UV) protection. The membrane will be designed to sustain dead loads, loads for biogas
inflation, and live loads including wind, snow, and seismic loads.
Heating will be provided by hot water piping embedded in the floor of each digester. Several
temperature control zones will be provided along the length of each digester. Zone temperature
• and digester pH will be monitored. Walls and floors will be insulated with foam-board
insulation, outside the secondary containment system.
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• Each digester will sit atop a layer of permeable material base (sand, gravel). Then a blueboard
(rigid polystyrene) will be placed on top of the base. The blueboard serves as a thermal insulator
for the digester. A layer of geotextile fabric will be laid down over the blueboard, then an
impermeable liner(such as 60 mil HDPE or XR5 material) will be installed at a 1% slope toward
the discharge end of the digesters. This impermeable liner will then be covered with a protective
geotextile layer, and then an engineered aggregate (sand or gravel)base will be placed on top of
these layers. The impermeable liner will extend up the sides of each set of digesters to within two
(2) feet of the top of the digester walls, where the walls will be exposed for visual inspection.
The top two feet of each digester will serve as the gas collection area and will not contain
digestate material.
Digester leak detection will be provided by a sump installed at the downstream end of each
digester. This sump will be located in a dry well at the discharge end of each digester and will be
visually inspected once per month. Documentation of these inspections will be placed in the
facility's operations records. If liquid is found in the sumps, it will be sampled for evidence of
material from within the digesters. The facility operator shall provide written notification to the
Division within seven days of discovering liquid in the leak detection system. If this sampled
liquid is found to contain any material from within the digesters, a report summarizing the
management of the liquid from the leak detection system including volume of liquid removed,
analytical test results, and liquid disposition. The report will also include repairs performed on
the leaking vessel. The report shall be provided in writing to the Division within thirty days of
• receiving analytical results or completion of the repairs.
(B) Equipment
1. Details, Engineering, and Equipment
Water Recycling, Solids Processing, Gas Processing Systems, and Operations Building: Other
onsite operations include a water treatment system, a solids dewatering system, a gas processing
system, and an operations building. These systems are described below:
Water Treatment System: Digestate from the anaerobic digesters contains ammonia and total
dissolved solids (TDS) i.e., salts. If not removed, the concentration of these constituents will
increase in the recycle water, impacting digester performance. Following digestate dewatering,
the clear liquid will flow to a water recycling system to remove ammonia and TDS, as well as
other undesirable components for the recycle stream. If the quantity of excess water exceeds the
quantity required at the blend tank, the excess water will be diverted to a synthetically lined,
effluent storage pond following treatment.
Digestate from the anaerobic digesters will flow to a solids separation and dewatering system.
The dewatered, digested solids will be conveyed to the solids processing area where, if needed,
they will be windrowed and further processed before being marketed to distributors and end-
users.
•
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• The liquid discharge from the solids separation and dewatering system will flow to a primary
clarification system for additional pretreatment. Settleable solids will be removed in the primary
clarifiers and the resultant thickened sludge will be pumped back to the solids separation and
dewatering system for processing and disposal. Some of the primary clarification system
effluent will flow to the activated sludge system for additional treatment and use. Most of the
primary clarification system effluent will be pumped to the effluent storage ponds until needed.
For the clarified wastewater sent to the activated sludge system—an aerobic biological treatment
process—much of the remaining BOD and TSS will be removed. Settleable solids will be
collected and pumped as a thickened sludge back to the solids dewatering system for processing.
Most of the effluent from the activated sludge system will flow to the dilution water pond for use
in substrate processing. Some of the activated sludge system effluent will be pumped to the
advanced wastewater treatment system for further processing and use.
For the aerobically treated wastewater sent to the advanced wastewater treatment system—a
membrane treatment process—nearly all of the remaining BOD, TSS, dissolved salts and
ammonia will be removed. Reject from the membrane treatment system will be sent to the reject
storage ponds. Most of the treated water from the membrane treatment system will be sent to the
to the dilution water pond for use in substrate processing. Some of the treated water from the
membrane treatment system will be pumped to the non-potable water (NPW) system from the
dilution water pond for use as fire fighting water, chemical makeup water, building cleaning, and
other utility functions.
•
Solids Dewatering System: Digestate will be pumped to the digested solids tank for
dewatering. It is then immediately pumped into two screw presses which will separate the
liquids from the solids. The solids will be transferred via belt conveyor to the dewatered solid
storage. The dewatered solids storage building is partially enclosed with a non-permeable floor.
The liquid drawn off at the screw presses will go into a pressate wet well, then pumped back to
the primary clarifiers.
Gas Processing System: The main product of the digestion process is clean methane gas. The
methane component is the most valuable product of the bio-energy facility. The methane
produced will be injected into the High Plains Natural Gas Pipeline. As the feedstocks in the
slurry mix are digested, they produce a biogas that is comprised of mostly methane and carbon
dioxide with some hydrogen sulfide, water vapor and minor particulates. The gas processing
system will collect biogas from the individual digesters and the methane will be extracted. Most
of the equipment will be housed in the gas processing building. More discussion of the gas
processing system is incorporated into Section 7.0 below.
Operations Building: The Operations building will include a scale room, restroom for truck
drivers, break area, men and women's locker areas, control room,janitor's closet, mechanical
room, offices, and laboratory. The control room will house the facility's supervisory control and
data acquisition(SCADA) system. The laboratory will have the capability to monitor volatile
fatty acids (VFA), bicarbonates, partial and total alkalinity; may include an inductively coupled
•
plasma mass spectrometer(ICP-MS); a gas chromatograph (GC); and other instrumentation as
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• required to analyze various feed stocks, blended sludge, digester contents, digestate, solids
processing system, water recycling system, and gas processing system. Sanitary waste will
discharge to a commercial septic system.
(C) Flow
The facility will consist of 24 anaerobic digesters at full build-out, fed with the above feed stock,
with each digester resembling what might be referred to as an `Olympic Sized Swimming Pool
with a gas tight Insulating Cover'.
The feed stocks will be pre-processed (grinding, shredding, separation) and then augured and/or
pumped into storage tanks. Then some of the feedstocks will be pumped to the blend tank. Water
will then be injected in to constitute a slurry that is approximately 12% solids by volume. After
the slurry is mixed, it will then be slowly injected into the front end of the digesters while
simultaneously pumping material out the back end of the digester. The manure feedstocks will be
pumped directly from the manure storage tanks to the digesters. The pumping rate will require 24
to 30 days to traverse the length of the digester, and input/output rates will be controlled
automatically to maintain constant slurry levels within the digesters.
(D) Start-up Process
The start up process will take approximately 24 days to fill a digester cell, which then will begin
• the 24 to 30 day digestion process.
6.0 Outputs
(A) Liquid materials
Liquid output for this facility includes outgoing elemental sulfur slurry and recycled digester
water pulled from the digestate.
(8) Solids Materials
Solid output for this facility is solids recovered by a screw press. This compost-like product will,
if needed, be windrowed and/or further processed, and marketed to distributors or end-users.
(a) (Appendix) Sampling
(C) Re-Introduced Materials/Process
Water from the process will be treated and re-used. Any digestate recovered from the leak
detection system will be re-introduced to the digestion process.
(D) Byproducts
1. Sulfur
• H2S (hydrogen sulfide) is created in the biogas production from the digesters. H2S in the tail gas
will be reduced to elemental sulfur and water using an iron chelate solution. The spent solution
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• will be regenerated. By mixing with air, ferric iron chelate in the spent solution is converted to
ferrous iron chelate. The regenerated solution is clarified by decanting. Sulfur slurry is filtered.
This elemental sulfur has substantial market value as a crop fertilizer, and will be marketed
accordingly.
H2S also may be removed by an alternative means known as the Pacques process. The Pacques
process (NATCO) acts on the biogas prior to the Molecular Gate technology to extract the H25
prior to separation of the carbon dioxide and the methane via the Molecular Gate technology.
The final decision on gas treatment options will depend in part on whether or not HRE is able to
secure a purchase contract for the carbon dioxide in the biogas from an industrial supplier or oil
production company; deriving sufficiently clean carbon dioxide can increase facility capital cost
and operating cost.
For the Pacques process, the biogas mixture will be piped via a low pressure system into a
Whirlyscrub Inlet separator and then into an absorber. The absorber is an aqueous soda solution
that contains thiobacillus bacteria. These bacteria absorb the H2S and then biologically coverts
the gas into elemental sulfur in a slurry form that can be dried. This elemental sulfur has
substantial market value as a crop fertilizer.
2. Carbon Dioxide
Methane and carbon dioxide are the two main components of the biogas produced. The carbon
• dioxide (along with other impurities) is extracted from the methane after a compression process.
The most likely gas scrubbing process for use in the facility is the Molecular Gate option which
separates out a clean methane stream and a tail gas stream. This tail gas is about 87% CO2 and
approximately 13% methane; and will flow with this option to a thermal oxidizer. The methane
is effectively combusted in the thermal oxidizer, and a heat exchanger on the hot gas vent is used
to heat the water that is circulating around the digesters. The CO2 is then further cooled and will
be either marketed or released into the atmosphere.
There are other third party options which may be substituted for the Molecular Gate processing
scheme if HRE determines that there is an adequate market for the carbon dioxide separated
from the biogas stream. The reasons for such potential substitution is that the Molecular
Gate/thermal oxidizer process will result in a CO2-rich exhaust stream that is of insufficient
purity to make CO2 recovery practical.
3. Heat/Thermal
Heat is created for the circulating water via a heat exchanger when the tail gas methane is
combusted during the thermal oxidation process. This water is the heat source for the digestion
process. This water needs to be at a temperature such that the digestate within the digester is held
constant at approximately 98 degrees F. The bacteria excreting the methane perform poorly if
subjected to significant temperature variations.
•
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• (E) Materials Storage
1. Gas
The digesters will be covered with gas impermeable covers and contain the biogas that is
generated during the anaerobic digestion of the biomass in the digestate. The biogas will be
composed primarily of methane (-60%), carbon dioxide (-40%) and hydrogen sulfide (-3000
parts per million). The total volume for containment of biogas within one digester is calculated
to be approximately 2,620 cubic yards or a total of 62,880 cubic yards for the 24 digesters. At
any instance of time this is projected to be the maximum amount of biogas in storage.
The total amount of biogas generated daily is projected to be approximately 6.5 times the volume
capacity of the digesters. Under normal operating conditions the biogas that is generated will be
withdrawn and processed for delivery to the gas pipeline at a rate such as to maintain the total
volume and containment pressure within each digester at near constant values. In the event that
the facility is notified in advance that electrical service may be down for short periods (several
hours) the volume of gas contained within the digesters may be"drawn down"by processing
additional gas through the gas processing equipment or the gas flared during this draw down
period.
No finished natural gas will be stored at the facility.
2. Soil Amendment
• The facility is projected to produce between 676 and 957 tons per day of soil amendment at 70%
moisture. The amount produced is dependent on the efficiency of the system in converting
biomass to biogas. The soil amendment will be dried in windrows to reduce the moisture content
to 50% moisture. Assuming average moisture content during drying of 50%, the amount of soil
amendment produced would be 407 tons to 574 tons per day. The facility expects to have up to 3
months of inventory depending on time of year due to the seasonal variation in demand for the
product. Total inventory would range from approximately 36,500 tons to a maximum of 51,660
tons. At a bulk density of 0.5 tons per cubic yard the volume would range from 73,000 to
103,300 cubic yards. It is assumed two months of soil amendment would be "in process", i.e.
drying, and one month of soil amendment would be "finished"product.
Although the facility expects to sell most soil amendment in bulk to large agri-products
businesses that have developed distribution channels for related materials, soil amendment may
also be sold for other applications, including bedding for dairy cows or on farm applications.
The site layout plan depicts specific location(s) of soil amendment storage area(s). Also included
in the appendix are several sample analyses of the amendment, taken from a similar facility
located at Port of Tillamook Bay. The sample labeled PT1 is a wet soil amendment and PT2 is a
dry soil amendment. These samples are from a similar digester,but their retention time is 16
days, whereas HRE's intended retention time is 24 days. Actual data from HRE's site is
anticipated to be lower in nutrients.
• (a) (Appendix) Sample Results
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•
3. Sulfur
The hydrogen sulfide concentration in the biogas is highly dependent on the sulfur content in the
feed materials received at the facility and the concentration in the facility's make up water.
Based in part on analyses of feed materials and water that will be used in the digester system's
operation, HRE expects the biogas exiting the digesters to contain about 3,000 parts per million
(volume basis) of hydrogen sulfide. HRE is considering several alternative processes for use in
reducing the hydrogen sulfide to elemental sulfur. The maximum amount of sulfur that will
generated is projected to be approximately 1.2 tons per day, or a volume of about 1.3 cubic yards
per day.
The sulfur will be sold (such as for use as an organic fertilizer) or the sulfur and iron sulfide
transported to a permitted commercial landfill for disposal.
(F) Reintroduced Material
1. Water
The amount of makeup water required is very much dependent on the age of the manure, season
of the year that the manure is collected, and overall feed mixture used in the facility. During
periods of the year when the moisture content of the incoming feed material mixture is low HRE
• projects up to 70,000 gallons per day of makeup water may be required. When the moisture
content of the incoming feed material mixture is high, an excess of up to 30,000 gallons per day
may be produced and stored for future use.
2. Solids
HRE projects recovery of approximately 2,900 gallons per day of fiber contained in the water
from the fiber filters. This will be returned to the digesters on a daily basis.
3. Sand/Grit
As part of the feed agreements with the manure suppliers, HRE can return grit (rocks, sand)
separated from manure to the suppliers. The grit that will be returned to the suppliers will have
been washed to remove partially processed solids. Grit material may also be supplied to other
end users for construction or reclamation projects. Preliminary design estimates 83,860 gallons
per day of sand/grit slurry may be produced. The sand/grit will be back hauled in the same
trucks that deliver manure to the facility or will be picked up by other purchasers of the material.
HRE expects to store up to one week of this material on site (up to 4,300 cubic yards at 1.2 tons
per cubic yard). Note that the calculated grit content is based on incoming manure containing
maximum grit content, based on reported results of maximum ash content in feed lot manure as
reported by Texas A & M. Recent results for silicon content in local feedlot manure (and
converted to silica) reported less than 1 percent of total mass weight. Although unlikely the grit
• content will be just silica, results still suggest that the amount of grit produced may be
considerably less than that reported in the Materials Summary sheet (perhaps as low as 10 to
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• 15% of that shown). Once the facility is operational, HRE will be working with the feed lots to
establish processes to minimize the amount of grit (dirt, sand, and rocks) contained within the
manure that is collected.
4. Salts
Brine will be extracted as part of the water recycling process and evaporated to concentrate the
salt as a solid. The salt may be sold for commercial applications or disposed of as required by
local, state, and federal regulations. The amount of salt recovered is expected to be dependent
primarily on mineral content of the incoming manure and water of the various feed materials,
and the need to prevent buildup of excessive minerals in the digesters that may kill or inhibit the
activity of the bacteria that digest the feed materials. Since the water will be recycled in the
facility, the amount of treatment that is needed will be based on operating requirements for the
digesters. Based on analyses for total soluble salt concentration in samples of feedlot manure
from four large cattle feedlots that will be supplying manure to the facility, the amount of soluble
salt extracted per day would be in the range of 3.8 to 18.3 tons/day(or 2.8 to 13.5 cubic yards per
day).
7.0 Natural Gas/Methane
• (A) Processing
The methane component in the biogas produced by the digesters is the most valuable product of
the bio-energy facility. The cleaned methane will be injected into the High Plains Natural Gas
Pipeline.
As the feed stocks in the slurry mix are digested, they produce a biogas that is comprised of
mostly methane and carbon dioxide with some hydrogen sulfide, water vapor and minor
particulates. The gas processing system will collect biogas from individual digesters and
produce pipeline-quality methane by subsequent removal of unwanted components in the biogas.
Most of the equipment will be housed in the Gas Processing Building. Equipment includes a
skid mounted, six-bed pressure swing absorber(PSA) unit "Molecular Gate"that will be used to
remove the water, carbon dioxide, and H2S contaminants in the biogas. Three, screw type feed
compressors will boost pressure to the PSA unit to 100 psi. If an alternative gas processing
scheme is selected to result in a very clean CO2 exhaust stream for sale, the feed compressors
will need to boost the gas pressure to about 400 psig prior to the alternative PSA unit. Following
absorption in the case of the Molecular Gate, the absorber vessel will be regenerated by reducing
the pressure using vacuum pumps. Water, carbon dioxide, and H2S are desorbed and leave the
system as tail gas with the Molecular Gate.
Whichever PSA treatment option is selected, two multi-stage reciprocating compressors will
boost the resulting dry gas (clean methane) pressure to as high as 1200 psig prior to discharge
into the Interstate Pipeline tap (the tap includes valving, control equipment, and a gas flow meter
• provided by the pipeline operating company through which the clean methane passes as it enters
the pipeline).
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• Heat recovered from the compressors and from gas coolers will be used for heating the FOG and
FW/SW storage tanks, the recycle water to the blend tanks, digester feed (trim), as well as
maintaining heat within the digesters.
(B) Construction
1. Details, Engineering, Equipment
The Molecular gate scrubbing process consists of four pressure vessels on a skid with auxiliary
equipment filled with a man-made absorbent. Piping and compressors are hooked up, biogas
from the digesters goes through compression, then feeds into the bottom of one pressure vessel.
The biogas flows up and out through a control valve at the top of each vessel and the 'scrubbed'
gas leaving the vessel is monitored for carbon dioxide content.
The Molecular Gate scrubbing process entails 'dirty components' (carbon dioxide, water vapor,
any hydrogen sulfide, any nitrogen) in the biogas to attach to the absorbent, allowing only clean
methane to flow out top of vessel until CO? of about 1.5% is detected in the cleaned methane
stream. At that point, the flow of biogas is automatically switched to the second vessel with the
first vessel being slowly decompressed and a vacuum applied which draws off the 'dirty
components'plus some carried over methane (a mixture of 12-13% methane and some hydrogen
sulfide plus carbon dioxide) called the 'tail gas'.
• The clean methane goes downstream separately from the tail gas, is dehydrated as may be
needed to meet pipeline quality requirements, compressed to pipeline pressure (up to
approximately 1200 psig), then cooled to 120 degrees F after which this methane flows through
the pipeline'tap' (supplied by the interstate gas pipeline company) and into the flow with all of
the natural gas to the High Plains system.
8.0 Air
(A) Dump Flares
External dump flares for emergency use only will be installed. These flares provide for the
combustion of 100% of the biogas being produced by the HRE facility should an emergency
situation occur(such as a fault in the interstate gas pipeline that precludes injection of HRE's
product gas).
(B) Generator(s), Engines, Compressors
A diesel-powered (emergency use only) stand-by generator will be provided to run safety related
equipment, instrumentation/SCADA systems, and other vital gear. Any emissions from this
generator will be covered in the APEN.
(C) Emissions
All air emissions released from the respective operating systems and equipment(except for
• emergency use only equipment immediately above) will be processed, scrubbed, or desorbed and
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• will leave the system as tail gas. H2S in the tail gas will be reduced to elemental sulfur and water
using an iron chelate solution (or removed using the Pacques process described earlier). The
spent chelate solution will be regenerated. By mixing with air, ferric iron chelate in the spent
solution is converted to ferrous iron chelate. The sulfur slurry is filtered and the elemental sulfur
is collected and marketed as an agricultural nutrient to manufacturers of agronomic products.
Air quality emission parameters for the air emissions permit will be measured and reported upon
facility start-up. All requirements for a Construction Permit (GP03) and Air Pollutant Emission
Notices (APEN) will be fulfilled and the respective applications submitted to CDPHE Air
Pollution Control Division upon completion of the final site design, equipment selection,
construction criteria, and evaluation of actual emission rates and attainment levels.
9.0 Other Permits / Agencies
(A) Weld County Special Use Permit
-All required local permits will be applied for and obtained prior to facility construction
and or facility start-up.
(B) Weld County Certificate of Designation
(C) Water Quality
• -NPDES General Permit, Industrial Discharge Permit or a beneficial reuse permits as
applicable.
(D) Air Quality Permits
-Air Pollutant Emission Notice(APEN) and Application for Construction Permits.
-Self-Certification for compliance and application for a final approval permit.
(E) Colorado Department of Agriculture
The facility shall adhere to the CDA's testing and labeling requirements as applicable for
compost.
10.0 General Operation
(A) Description of General Daily Activities
Daily activities shall consist of:
• receiving, storage and processing of waste streams
• maintenance and repair of all equipment
• shipping of by-products
. • record keeping/monitoring of operations
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• These activities shall occur 24 hours per day, 7 days per week, and 365 days per year. Personnel
shall operate this facility in three shifts per day with continual monitoring. The SCADA system
shall monitor operations data on a constant basis.
(B) Employees/Staffing
I. Employee Training
All facility personnel shall acknowledge review and understanding of the Design and Operation
Plan and shall dutifully follow the requirements set forth.
Facility personnel will meet all respective safety training requirements as established by
Heartland Renewable Energy, LLC, and the facility operating company, and the Occupational
Safety and Health Administration.
2. Staffing
The HRE facility will be staffed 24 hours a day, 7 days a week. HRE expects to receive
feedstocks for the facility 16 hours per day and will be processing materials on a continuous
basis. The maximum staff loading will be on the day shift when most on site materials handling
of the soil amendment, materials for recycling or disposal, and scheduled maintenance and repair
of equipment will be performed as well as administrative activities. Although not a waste water
treatment facility, many of the operations in the facility are closely related to those operations
• staffed by personnel with backgrounds in the wastewater, solid waste, or waste to energy
industry. All staff will be required to pass a drug test and background check as well as have a
valid driver's license with a good driving history. Staff will be required to have the
training/licensing before operating any mobile equipment and other specialized handling and
processing equipment. Facility personnel will be required to participate in routine safety training
related to facility operation and materials handling.
The following is the total projected facility staff with job classification, number (in parenthesis)
and job description for the facility staff. Number of employees on site on a daily basis is
expected to be 18 —24 employees, and allowances are made for day-off schedules.
Plant Manager (1)
The Plant Manager develops work schedules and records of work activities, procedures, and
guidelines for material receiving, scheduling of materials delivery, materials processing, and
treatment and maintenance operations. Maintains and enforces facility policies and procedures,
and environmental standards and compliance. This position supervises the operations and
maintenance of the facility and directs and supervises personnel to ensure the facility is operated
and maintained in a clean, safe and efficient manner.
Required: Three years working as a Plant Manager in the power, waste water or waste to energy
field. Bachelor's degree in engineering or equivalent experience in the field.
• Administrative Assistant (2)
AGPROfessionals,LLC 29
Heartland Renewable Energy Design and Operations Plan
• Reports to Plant Manager. Prepares invoices, reports, memos, letters, financial statements, and
other documents, using word processing, spreadsheet, database, or other software. Maintains
documentation on all incoming materials, operational procedures, safety, training, personnel
status and other administrative activities.
Required: Associates Degree or equivalent with one to two years experience in office
administration and accounting, preferably related to water, waste water, or waste to energy
facilities. Must have good customer service and interpersonal skills. May require certification
and additional vocational training in safety or other specialized areas related to facility operation.
Shift Supervisor (4)
Serves as Plant Manager's representative during periods when Plant Manager is off-site. Directs
activities of Plant Operators and Materials Handlers and serves as Plant Operator in the absence
of said Operator. Trains shift personnel in safety procedures, equipment use, and facility
operations. Responsible for enforcement and administration of lockout/tag out procedures,
confined space entry program and monitoring, as well as other safety and environmental
requirements to assure safe working conditions. Monitors facility operation control system and
takes corrective action as required to maintain facility operation in safe condition. Performs other
administrative duties such as conducting performance appraisals, disciplinary forms, accident
and equipment damage reports, approval of timesheets, and documentation of attendance and
tardiness, materials control documentation, and maintenance of facility security. Maintains an
accurate log of facility operations, activities, and events.
• Required: Five years experience in the field with at least 2 years working as a plant supervisor.
Associates degree or equivalent experience preferably in the wastewater, waste management, or
waste to energy operations.
Plant Operator I - Mechanical (10)
Reports to Shift Supervisor. Requires mechanical and observation skills sufficient to perform
varied mechanical tasks safely. Monitor, and safely operate equipment used to receive and
process feed materials including augers, grinders, pumps, mixers, mixing tanks, heating systems
and heat exchangers, valves, and sieves. Monitor and safely operate equipment to dewater/clean
soil amendment and grit. Perform scheduled maintenance on digester system including repairing
valves, sensors, gas flaring system, and dewatering equipment for soil amendment. May include
regular inspections of gas compression, and other equipment and implementation of repairs by
service technicians as required. Perform other duties as may be required. May relieve Shift
Supervisor of control room operation when required.
Required: High school diploma and skills and technical knowledge of water, waste water
treatment, or waste to energy facility operation attained by specialized courses and on-the-job
training. One to two years directly related work experience in water, wastewater, or waste to
energy operations. May require certification in water, waste treatment specialty or other
specialty.
Plant Operator II—Chemical (4)
• Reports to Shift Supervisor. Responsible for maintenance of waste water treatment system
including preventative maintenance and repair of equipment, monitoring of water quality and
AGPROfessionals,LLC 30
Heartland Renewable Energy Design and Operations Plan
• chemical treating, as well as water storage systems and laboratory testing of incoming materials.
Ensures all water related systems are operating safely, efficiently, reliably, and in compliance
with state and federal regulations, and protection of employee and public health and safety. May
include other responsibilities including those of Plant Operator— Mechanical as directed by Shift
Supervisor.
Required: High school diploma and skills and technical knowledge of water or waste water
treatment facility operation and maintenance attained by specialized courses and on-the-job
training. One to two years directly related work experience in water, wastewater, or waste to
energy operations. May require certification in water or wastewater treatment specialty.
Materials Handler (9)
Reports to Shift Supervisor. Assure orderly and safe transfer of feed material from haulers to
storage tanks or containment vessels. Load trucks/containers with waste materials for recycling
or disposal. Windrow soil amendment for drying and operate equipment for turning and
processing material as well as load trucks transporting finished "dried" soil amendment to
customer. Assist with general maintenance duties at facility including washing down and
cleaning equipment, grounds maintenance, collecting samples for testing and calibrating
equipment. Perform other duties as instructed by Shift Supervisor.
Required: High school diploma with skills and technical knowledge attained by specialized
courses and on-the-job training in the operation of specialized equipment May require training
and certification related to operation of specialized equipment.
Security Guard (1)
Reports to Plant Manager. The security gate to the facility will be open and staffed by a Security
Guard during normal working hours Monday through Friday. In addition to greeting,
documenting and admitting visitors, delivery persons, vendors and staff, the Guard will also
admit haulers of feed materials to the facility. All vendors and visitors to the facility will be
required to be accompanied by an employee when on site. Each hauler will be issued an access
card that will be used to verify that the driver is certified to deliver or pick up material at the
facility. The access card will be used to open the gate when the security gate is not staffed and
will also be used for weighing and recording type and amount of materials received at, or hauled
from the facility. In addition, video surveillance cameras will be located at strategic locations
within the facility including at the security gate. This will provide continuous monitoring in the
facility control room and other key locations, such as where feed materials are delivered, of
personnel and trucks entering or leaving the property. Personnel without appropriate access
certification or clearance will not be admitted to the facility.
Required: High School or GED equivalent with skills and training in facility security and safety.
(C) Maintenance
Routine preventative maintenance and cleaning shall be provided by staff as needed. Some
systems will be designed with clean-in-place capabilities.
•
AGPROfessionals,LLC 31
Heartland Renewable Energy Design and Operations Plan
• (D) Emergency Response
1. Fire
Please see Fire Protection in Appendix
(a) (Appendix) Fire Protection
2. Other
Additional emergency response procedures will be designed and implemented prior to facility
start-up. Procedures and personnel will be in place to address mitigation of all emergencies and
implement control measures
(E) Emergency Contact Info
To be determined following construction and facility start-up.
(F) Contingency
Please see Contingency Plan in the Appendix.
(a) (Appendix) Contingency Plan
11.0 Documentation, Records & Reporting
• (A) Recordkeeping
The following records, at a minimum, shall be maintained on-site:
1. Type and amount of feed stocks, liquid wastes, and bulking materials received,
processed, and remaining on-site.
2. Amount of by-products sold or distributed off-site.
3. Water quality monitoring data.
4. Waste stream analysis.
5. Operational monitoring data.
6. Financial Assurance.
7. Design and Operations plan.
8. Certificate of Designation.
9. Facility Personnel training.
10. Maintenance plans/schedules.
11. Records supporting the mechanism to preclude acceptance of any hazardous or
unacceptable wastes.
12. Leak detection reports (if applicable)
(B) Reporting
The operator shall maintain records of all air emission stack tests and continuous monitoring
results for facility operations as required within the respective permits. These records will be
• maintained on-site and available to the Department or local authority upon request.
AGPROfessionals.LLC 32
Heartland Renewable Energy Design and Operations Plan
• The operator shall submit an annual report by May 1 of each calendar year to the Department
and Weld County. The annual report shall provide total volumes of materials received at the
facility during the previous calendar year.
Leak detection reporting shall be provided as previously described in Section 5.0.
12.0 Nuisance Control & Management
(A) Dust
Should nuisance dust conditions arise, dust suppression equipment or methods will be
implemented for optimal control of nuisance conditions. Nuisance dust generation will be
mitigated by improved surfaces for vehicle use and reduction of non-vegetative areas. Dust
control processes will include, but will not be limited to, application of water to traffic areas,
reclamation of bare ground which may develop over time, and reduction and control of dust
generating operational activities.
(B) Odor
Please see Odor Management Plan in Appendix.
(a) (Appendix) Odor Management Plan
(C) Windblown Materials & Debris
• The site shall be fully enclosed with fencing, which will prevent any windblown material or
debris from leaving the site. If there is any accumulation of debris along the site perimeter, it will
be removed from the fencing, and hand collected if refuse was to exceed the site perimeter.
(D) Pest Control
Pest control on this facility will be managed by utilizing best management practices to minimize
habitat and reduce available food supply. Standing water, weeds and grass, manure or compost
stockpiles are all prime habitat for pest reproduction and protection. These areas will be reduced
or eliminated where practical and as needed. Baits and chemical treatments, although a last line
of defense, are very effective. Selective placement of traps and baits may periodically be used to
help manage any rodent or fly populations. Regular cleaning of processing areas will help reduce
pest food sources.
13.0 Closure
(A) Operational Maintenance & Temporary Closure
In the event of an emergency shutdown or temporary closure the digesters themselves will
continue to produce gas. The SCADA system will detect any upset events and immediately
respond with alerts and an alarm page to the appropriate on-call personnel. In the event of a
malfunction with the gas system, the SCADA system will automatically re-direct the flow of gas
to the dump flares. The dump flares are designed to handle 110% of total production and will
• combust the methane gas and release the CO2.
AGPROfessionals,LLC 33
Heartland Renewable Energy Design and Operations Plan
• (B) Closure
Due to economic and market conditions it may be necessary for HRE to suspend operation of the
facility. At such time that operations are suspended, the Closure Plan shall be implemented.
In the event that it becomes necessary to suspend operation of the facility including the
discontinued receipt, processing and sale of materials for more than 180 days, or otherwise
approved by CDPH&E, HRE shall notify CDPH&E and Weld County and begin the
implementation of the Closure Plan in accordance with 6 CCR 1007-2 Sec. 14.8.2 to maintain
safe environmental conditions. HRE shall provide CDPH&E and Weld County written
notification within fourteen(14) calendar days of commencing the implementation of the
Closure Plan in accordance with 6 CCR 1007-2 Sec. 14.8.4. HRE shall provide CDPH&E and
Weld County written notification within thirty(30) calendar days documenting that all of the
requirements and conditions of the Closure Plan have been achieved in accordance with 6 CCR
1007-2 Sec. 14.8.5. Following the closure of the facility a notation shall be placed on the
property deed notifying any potential purchaser that the property has been used as a composting
facility in accordance with 6 CCR 1007-2 Sec. 14.8.6.
The following closure tasks shall be completed within ninety (90) days unless an extension is
granted by CDPH&E and Weld County. This extension request would be necessary if the closure
will take more than ninety(90) days for HRE to complete all necessary measures to prevent
threats to human health and the environment.
• Closure:
Removal of Residual Materials from Facility
All stored raw materials including manure, FOG, and food waste will be used in the digestion
process to completion. All digester activity will continue until the flow process is completed and
the digesters are empty. The HRE site has a capacity of 248,200 tons per year of total finished
compost material. All of the finished material shall be marketed and sold until removed. All
finished compost shall be removed from the site within 90 days unless prior written authorization
is given by Weld County and CDPH&E.
Removal of Residual Materials from Digesters and Storage Tanks
After all digester processing activities have been completed, each digester vessel and all storage
and process vessels shall be cleaned of any environmental hazards. The cleaning process will
include washing the walls, floors, and any mechanical apparatus within the vessel with a high
pressure water system or a high volume water system, and the residual wash water will be
pumped to the effluent storage pond. The digester covers will be maintained for a period of five
(5) years following the temporary shut-down of the facility.
Removal of Compost Debris from Surface Soils in Windrow Areas
• All finished compost debris material will be removed from surface soils.
AGPROfessionals,LLC 34
Heartland Renewable Pnerpv Design and Operations Plan
• Storm Water Pond, Reject Storage Ponds, Effluent Storage Ponds and Dilution Water
Pond
During the closure process, water contained in the effluent storage pond will be utilized as fluid
for the digestion process. Any water remaining in the effluent storage pond upon completion of
all digestion processes will be pumped to the wastewater water treatment system and transferred
to the dilution water pond. All water contained in the dilution water pond will be utilized for the
digestion process and during the cleanup of the facility, or may be utilized for site reclamation as
permitted for, and outlined in, the facility's discharge permits. All water remaining in the
Stormwater Pond after facility closure will be used for land application, both within the facility,
or on third-party land application sites as permitted for, and outlined in, the facility's discharge
permit(s).
The ponds and pond liners will be maintained for a period of five (5) years following the
temporary shut-down of the facility. Maintenance will include periodic dewatering of storm
water from each pond and maintenance of the pond liner integrity.
(C) Post-Closure Care
At the end of the five (5) year temporary shut-down the facility will be permanently closed. The
following procedures will be followed to complete the permanent closure.
Storm Water Pond, Reject Storage Ponds, Effluent Storage Ponds and Dilution Water
• Pond
Following the de-watering of all impoundments, the respective synthetic liners will be removed
and disposed of in an approved sanitary landfill. The excavated area of each impoundment will
be backfilled with existing native soil and graded to blend into the topography of the surrounding
area to prevent ponding of stormwater.
Re-Seeding of Disturbed Surface Area
The surface area of the facility's tillable acres will be ripped once to loosen the soil and then
disked once to break up clods and smooth the surface to produce a seed bed. The ripping and
disking of the soil will remove the"hard pan" layer, a thick, compacted layer of soil that
develops and hardens over time. The loosened soil shall be used for re-vegetation of the site.
The compacted clay surface area will be disked to produce a seedbed. A dryland grass mix,
including winter rye or oats cover crop will be cross-drilled into the seedbed. Cross drilling is a
method used to incorporate the seed in which the seeds are drilled into the soil in two different
directions.
Removal of the Digesters
At the end of this five year period, if permanent facility closure is eminent, the digesters will be
crushed by adding soil to the bottom of the vessel and pushing the end and side walls in on each
other. The crushed digester will then be filled with existing native soil stockpiled on site during
construction. Additional soil will be placed above the crushed digesters to a thickness of 1.5 feet.
•
The placed soil will be graded to prevent any ponding of stormwater.
35
AGPROfessionals.LLC
Heartland Renewable Energy Design and Operations Plan
• Following permanent closure of the facility, HRE shall conduct post-closure care in accordance
with 6 CCR 1007-2 Sec. 14.9.1 by monitoring the site. HRE shall inspect and maintain the
ground cover and vegetation indicated in the Closure Plan and shall submit an annual report to
CDPH&E and Weld County detailing post-closure care activities during the prior year. In
conjunction with the post-closure care, HRE will maintain the facility to meet the Use by Special
Review and Weld County development standards including building and facility maintenance,
weed control and facility security.
The post-closure care and maintenance period shall be for a minimum of five (5) years unless
HRE, after consultation with CDPH&E, demonstrates that the reduced period is sufficient to
protect human health and the environment in accordance with 6 CCR 1007-2 Sec. 14.9.2.
In accordance with 6 CCR 1007-2 Sec. 14.9.3 following completion of the post-closure care
period HRE shall submit a certification signed by an independent Colorado registered
professional engineer for approval by CDPH&E and Weld County verifying that post-closure
care has been completed in accordance with the post-closure plan and has been placed in the
operating record.
•
•
AGPROfessionals.LLC 36
Heartland Renewable Energy Design and Operations Plan• Appendix
• Proposed Site Layout
• Vicinity Map
• Existing Site Map
• Legal Description and Easement Map
• Preliminary Drainage Report
• Custom Soil Report
• Well Map
• Well Registrations
• Flood Plain Map
• Preliminary Geotechnical Report
• Monitoring Well Installations
• Groundwater Monitoring Information/Plan
• Material/Tanks Summary
• Secondary Containment Calculations
• Equipment Summary
• Waste Characterization Plan
• Contingency Plan
• Fire Protection
• Odor Management Plan
•
• Sampling
• Sample Results
• ATI Drawing Packet
•
AGPROfessionals,LLC 37
R°°-"
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N I
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+
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EFFLUENT STORAGE C DIGESTER DIGESTER ] S S ♦♦ ♦\ 1 -----_-- .._,,._--_----_
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. ----. ROAD 40
STRUCTURE LEGEND
STRUCTURE NO STRUCTURE NAME STRUCTURE NO. STRUCTURE NAME '
]0 MANURE RECEINNG BUILDING 45 ANAEROBIC DIGESTERS
JI MANURE TANK NO I 46 AD EFFLUENT PUMP BUILDING
32 MANURE TANK NO 2 47 BOILER BUILDING
33 FOG STORAGE TANK 50 SOLIDS DEWATERING w,
p JS FOG WASTE BUILDING 60 WASTEWATER TREATMENT
56 SW k FW STORAGE TANKS 65 WASTEWATER PUMP BUILDING
9 SW&FW BUILDING 67 DILU RON WATER PUMP BUILDING N
!9 BLEND TANK 68 EFFLUENT PUMP STATION '
39 LIQUID MANURE RECEINNG JO BIOGAS TREATMENT II i FI
40 ADS PUMP BUILDING 75 GAS COMPRESSOR BUILDING ES —
42 PIPE TUNNEL BO OPEFADONS BUILDING NUALL.I--_w
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• LEGAL DESCRIPTION:
A PARCEL OF LAND LYING IN THE SOUTHEAST 1/4 OF SECTION 25, TOWNSHIP 4 NORTH,
RANGE 65 WEST, OF THE 6TH P.M., COUNTY OF WELD, STATE OF COLORADO BEING
MORE PARTICULARLY DESCRIBED AS FOLLOWS:
BASIS OF BEARING: CONSIDERING THE SOUTH LINE OF THE SOUTHEAST 1/4 OF
SECTION 25, TOWNSHIP 4 NORTH, RANGE 65 WEST, OF THE 6TH. P.M., TO BEAR SOUTH
89°53'33"WEST AND WITH ALL OTHER BEARINGS CONTAINED HEREIN RELATIVE
THERETO:
COMMENCING AT THE SOUTHEAST SECTION CORNER OF SECTION 25, TOWNSHIP 4
NORTH, RANGE 65 WEST;
THENCE ALONG THE SOUTH LINE OF THE SOUTHEAST 1/4 OF SAID SECTION 25
S 89°53'33"W FOR A DISTANCE OF 1297.31 FEET TO THE POINT OF BEGINNING;
THENCE CONTINUING ALONG SAID SOUTH LINE S 89°53'33"W FOR A DISTANCE OF
1317.95 FEET TO THE SOUTH ONE QUARTER CORNER OF SAID SECTION 25;
THENCE ALONG THE NORTH-SOUTH MIDSECTION LINE N 00°00'59" E FOR A DISTANCE
OF 2640.04 FEET;
THENCE N 89°53'42" E FOR A DISTANCE OF 849.55 FEET;
THENCE N 89°53'33" E FOR A DISTANCE OF 472.47 FEET;
THENCE S 00°06'17"W FOR A DISTANCE OF 2640.02 FEET TO THE POINT OF BEGINNING.
CONTAINING A CALCULATED AREA OF 80.00 ACRES
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