HomeMy WebLinkAbout981543.tiff Q
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DEPARTMENT OF HEALTH
• ?, P tS 1517 16TH AVENUE COURT
. t, 7 GREELEY, CO 80631
0 �' Q`.�; ADMINISTRATION (970) 353-0586
C. {� HEALTH PROTECTION (970) 353-0635
CO
MMUNITY HEALTH (970) 353-0639
COLORADO FAX (970) 356-4966
July 13, 1998 yJ9 r'I t ::;',`l lr Planning Dent.
JUL 1 4 189,9
H. Michael Croissant ,�.. .
BOSS Compost, Inc. .-
Post Office Box 987
Brighton, Colorado 80601
Re: BOSS Compost, Inc. Facility, Site Visit on July 9, 1998
Dear Mr. Croissant:
The purpose of this letter is to summarize a conversation that occurred during a July
9, 1998, site visit by myself and Brenda Lujan of the Colorado Department of Public
Health and Environment to your composting facility, located near WCR's 12 and 35.
During our visit we discussed the Acklam and Associates, Inc. drainage study, dated
September 12, 1997. We discussed the fact that the drainage study encompasses
only 10 acres of the 80 acre site. We also discussed that all raw and composted
manure must be processed and stored on the 10 acre portion considered in the
Acklam study. This will allow any precipitation that may come into contact with the
manure or compost piles to be captured in the retention ponds designed by Acklam.
Materials such as wood chips, straw, etc. may be stored outside of the 10 acre portion
as long as they remain within the permitted 80 acre site.
Also discussed was the feasibility of the facility constructing lined retention ponds as
an alternative to the ground water monitoring plan previously proposed in the
application materials. Your assertion that the County and the CDPHE had previously
requested that the entire working area be lined in order to prevent seepage of
contaminants into the shallow groundwater, was correct, however, after observing the
site and the working area, it appears that the existing surficial soils may adequately
serve as a liner.
In light of these recent observations, our Department would give consideration to a
request to amend your operating permit to eliminate groundwater monitoring in the
14. EtIBIT
981543
CASE#d/96
H. Michael Croissant
July 13, 1998
Page 2
event you can demonstrate that the working area and the pond lining have a
permeability less than or equal to 1 X 10-5 cm/sec.
In order for this amendment to be considered you must submit a written request and
proposal to the Weld County Health and Planning Departments and the Colorado
Department of Public Health and Environment. At a minimum, the request and
proposal must describe, in detail, the type and method of lining for the retention
ponds, the frequency and method of testing to demonstrate the permeability of the
lining material of both the working area and the retention ponds, and a commitment to
submit a post-construction report.
I hope that this letter adequately summarizes our discussions on this date. If this letter
does not adequately summarize our discussions, or if you have any questions or
concerns, please do not hesitate to contact me at (970) 353-0635, extension 2232.
Sincerely,
Trevor Jiricek
Supervisor
Environmental Protection Services
tj\1059
cc: Brenda Lujan, Colorado Department of Public Health and Environment
Julie Chester, Weld County Planning Department
981.543
Weld County Planning Dept, H.MICHAEL CROISSANT
B.O.S.S. COMPOST, INC.
P.O. BOX 987
JUL 2 8 1998
BRIGHTON, COLORADO 80601
RECEIVED
E C E I V apr py� TELEPHONE 303/659-5987
.�[l FMS■!♦� i`�.i./1 FAX 303/659-1900
July 27, 1998
Trevor Jiricek
Supervisor
Environmental Protection Service
Weld County Department of Health
1517 16th Avenue Court
Greeley, Colorado 80631
Re: Elimination of Ground Water Monitoring Plan/Proposal For Lining Site B.O.S.S. Compost Working
Area and Detention Ponds, Permeability Less Than or Equal To 1X10-5cm/sec
Dear Mr. Jiricek:
In response to your letter summarizing our conversation on July 9, 1998 with you and Brenda Lujan
of the Colorado Department of Public Health and Environment at my composting facility WCR 12-and-
35, I find the facts to be represented correctly. Therefore as requested I am directing this proposal to
meet the permeability requirements and drainage detention. I further understand that I,will have four
(4)months to complete this new proposed plan.
On July 20,through July 24,we continued leveling me compost site for consistent drainage to the three
ponds and packing local clay during this process. Then on July 25, 1998 I, received shipment of three
semi trailer loads of Bentonite, from the First Bentonite Company of Salida, Colorado. This material
is presently in the process of being applied in each of the three (3) ponds at the compost site.
In order to achieve the permeability goal the bentonite is being applied at the rate of 5 pounds per
square foot @ 1'A inches thick in each pond.
I, have further researched other companies who are able to supply additional lining materials and have
found that H&H Environmental, Inc. P.0.Box 4581 Grand Junction, Colorado 81502 have given me
guidelines and can convey the materials in a timely manner to meet the final goal in this process.
4. EXHIBIT
981.549 I usie ii%
Trevor Jiricek
Supervisor
Environmental Protection Services
Weld County Health Department
July 27, 1998
Page 2
Mr.William Bellis Groundwater Specialists 4730 Table Mesa Drive Boulder, Colorado is in the process
of designing a part of proposal which will address frequency and method of testing to demonstrate
the permeability of the lining of both the working area and the retention ponds. Once this is completed
we will direct that report to you.
Please find the attached proposal as amended addressing the ground water issues, to include
material installation.
Sincerely,
H. Michael Croissant
by L.J. Eccher
cc: Ms.Brenda Lujan Colorado Department of Public Health and Environment
Julie Chester WeldCounty Planning Department
981.543
PROPOSAL
TO AMEND GROUNDWATER MONITORING PLAN
B.O.S.S. COMPOST SITE
NE% SEC 11, T 1N R66W
RD.12 AND RD.35
WELD COUNTY COLORADO
1.o INTRODUCTION
The ground water monitoring plan originally approved by the Colorado Department
of Health and Environment(CDPHE) and the Weld County Department of Health
(WCDH), included five (5) monitoring wells to be installed at the site to be used in
the groundwater monitoring program. Two monitoring wells to be installed
upgradient of the composting area to assess background groundwater conditions
and three (3) monitoring wells downgradient of the composting area to assess
potential impacts associated with the operation.
Field investigations of the area by Weld County Health Department and Colorado
Department of Public Health and Environment on July 8, 1998 revealed that the
three (3) ponds presently on site could be altered to meet the required water
retention/detention and permeability of 1X10-5 cm/sec.. Therefore this amended
proposal is described as that choice that B.O.S.S. Compost requests to pursue in
an effort to fullfill requirements of groundwater control.
1.1 SCOPE OF WORK
Three (3) ponds serving as natural drainage will be excavated and sealant materials
will be applied. The application and process will be as; the soil sealant shall be free
flowing , high swelling sodium bentonite as distributed by H&H environmental Inc.,
Grand Junction Colorado, or approved equal.
A. Materials
The bentonite material shall conform to the following requirements.
a. Dry fineness: Semi - Granular Grade
20% maximum retained on a 20% mesh
30% maximum passing a 200 mesh
b. Free Swell: min 12cc High swelling is defined as the ability
of 2 grams of bentonite when mechanically reduced to
minus100 mesh to swell in water to a volume of 12cc.
c. Moisture content: 9% to 12%
d. pH 6.4% Suspension: 7.5 to 10.5
B. Execution
The surface area upon which the water barrier is to be constructed
shall be graded as per the drawings by the engineer.
981,541.
Remove all vegetation, and debris which would penetrate the area of
seal. Work on the slopes shall be performed first before the bottom
to permit drainage in the event of rainfall.
Water will be added to the soil, or dried if to wet, before applying the
sealant to result in an optimum moisture content of plus or minus 2%.
The bentonite shall be spread uniformly across the base surface at
the specified application rate of five pounds per square foot @1 1 "
thick.
The sealant-soil layer shall be compacted to 95% of Modified Proctor
density.
The completed seal shall be covered with at least 4 inches of soil to
control erosion.
The completed seal will be hydrated with fresh water for testing and
protection. The adequacy of the completed seal for water tightness
will be tested by Groundwater Specialist William Bellis and a report
generated with determined permeability to meet the requirement of
1X10 -5cm/sec..
981543
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H&H ENVIRONMENTAL, INC. it t‘.
Sodium Bentonite' Salt Products Snowmelt & host Control Plastic Liners
"Protecting & Preserving Our Environment" Donald E. Kendall- President
"SODIUM BENTONITE"
WHAT IS IT AND WHERE Dill IT COME FROM?
Chemically, Bentonite is a hydrous aluminum silicate. It is a tti-layered platelet called
montmorillonite having tremendous absorption and swelling capabilities. In simpler terns,
it is a result of volcanic ash that was spewed into the air millions of years ago and then
settled in bodies of water. The ash and rock evolved into a soft waxy mineral over a long
period of time as it laid on the bottom of the ocean floor. It is believed the ash which fell
into salt water bodies was transformed into Sodium Ientonite. When the waters receded
and dry land was exposed, it left large deposits of Bentonite ore. It was used for hundreds
of years by Native Americans and by early pioneers as a soap, a lubricant for wagon
wheels and windmills and as a cabin roof sealant. It was first known to be commercially
mined and processed in the 1880's. It's most common uses today are: soil sealant in
ponds, lagoons and landfills, drilling mud, bonding agent for animal feed, sluny wall
construction, well hole plugging and as radon barriers for mining remediation projects..
WHAT ARE IT'S ADVANTAGES AS A LINER SYSTEM?
1. One of the most distinct and useful properties of Bentonite is its natural ability to fora
an impermeable bather to liquids and solids. Under normal conditions, unless damaged,
bentonite will hold its seal indefinitely, saving the cost of replacing deteriorated or depleted
alternate liners.
2. Bentonite generally cost less than membrane liners and can be installed with common
earth moving equipment. Specialized welding and testing equipment along with high cost
certified installers not required.
3. Bentonite is non-toxic and safe for human, fish and vegetation environments. It also
resist the harmful UV rays of the sun.
4. Where minimum permeability standards are required, amending the existing soils with
bentonite in lieu of importing large amounts of oil site clay soils can be cost effective. In
cases where existing soils include clay, but fall short of attaining permeability standards,
only a small amount of bentonite is required to achieve the required permeability.
991543
P.U. Box -1581 • Growl dill"lien, ( '1) I!I;,I ' • I :i(11) '15:! {WIC! . (!1 111 ' 1:-, °x(111 • (0711) 213 1111!)8 fn.
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