HomeMy WebLinkAbout20031447.tiff AgPro Environmental Services, LLC 4311 Hwy 66, Suite 4, Longmont, CO 80504
AURORA DAIRY - COLORADO
7228 State Highway 66
Platteville, Colorado 80651
Comprehensive Manure and Wastewater
Management Plan
r
Prepared by:
AgPro Environmental Services, LLC
4311 Hwy 66, Suite 4
Longmont, CO 80504
October 10, 2002
Your "Pro Ag" Environmental Professionals
2003-1447
AgPro Environmental Services,LLC 10.10.2002
TABLE OF CONTENTS
INTRODUCTION 3
PROFESSIONAL ENGINEER'S CERTIFICATION 3
CONTACTS AND AUTHORIZED PERSONS 3
LEGAL DESCRIPTION 3
SITE DESCRIPTION 4
FACILITY 4
MAPS 4
STORMWATER AND PROCESS WASTEWATER MANAGEMENT 4
SURFACE RUNOFF 4
25 year, 24-hour Storm 4
10 year, 10-day Storm 4
Stormwater Containment Capacity 5
Surface Runoff Management and Disposition 5
PROCESS WASTEWATER 5
GROUND WATER PROTECTION 5
POND LEVELS 6
FLOODPLAINS 6
OFF-SITE DRAINAGE DIVERSION 6
SOLID MANURE MANAGEMENT 6
LAND APPLICATION OF SOLID MANURE 6
RECORD KEEPING 7
LIMITATIONS 7
Appendix A 8
Appendix B 9
Appendix C 10
Aurora Dairy-Colorado Comprehensive Manure&Wastewater Management Plan 2
AgPro Environmental Services, LLC 10.10.2002
Introduction
This Comprehensive Manure and Wastewater Management Plan (CMWMP) has been developed
and implemented to comply with requirements, conditions and limitations of the Colorado
"Confined Animal Feeding Operations Control Regulation", 5 CCR 1002-81. This CMWMP
outlines current site conditions, structures and areas requiring management of solid manure,
stormwater run-off and process wastewater. This CMWMP will be kept on-site and amended
prior to any change in design, construction, operation or maintenance which significantly
increases the potential for discharge of solid manure, stormwater run-off and process wastewater
to waters of the State. This CMWMP shall be amended if it is ineffective in controlling
discharges from the facility. Below is the date of the last CMWMP amendment:
Amendment 1:
Amendment 2:
Aurora Dairy - Colorado will keep records relating to the CMWMP onsite for a minimum of
three years.
Professional Engineer's Certification
This CMWMP has been prepared by, or under the direct supervision of, Eric W. Dunker, P.E.,
Colorado Registered Pro ..Engineer No. 33915.
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Contacts and Authorized Persons
Aurora Dairy - Colorado
7228 State Highway 66
Platteville, CO 80651
The individual(s) at this facility who is (are) responsible for developing and implementation,
maintenance and revision of this CMWMP are listed below:
David Sumrall President, Chief Operating Officer
(Name) (Title)
On-Site Manager
(Name) (Title)
Legal Description
,---- The legal description of Aurora Dairy - Colorado is:
The E% of the NE'/, and the NE''A of the SE''A of Sec. 30, Township 3 North, Range 67 West,
Weld County, Colorado.
Aurora Dairy-Colorado Comprehensive Manure& Wastewater Management Plan 3
AgPro Environmental Services, LLC 10.10.2002
Site Description
Facility
Aurora Dairy - Colorado is a proposed new dairy facility located on the south side of State
Highway 66, and approximately 7/8 mile east of Weld County Road 13. Dairy construction will
be industry-typical steel and wood posts, pipe and cable fence, concrete feed aprons and feed
bunks, feed alleys and cow movement alleys, feed storage areas and associated storage structures
and maintenance facilities, waste management and control structures. The ultimate maximum
capacity at Aurora Dairy - Colorado will be 2,500 milking cows. Cow numbers fluctuate during
the year. However, the average number of cattle at the facility is expected to be approximately
2,500 head. Farm ground borders the facility on three sides; north,west and south. An existing
dairy borders on the east.
Maps
The maps described below are included in Appendix A.
Topographic Map
The Topographical Location Map shows the location of Aurora Dairy- Colorado, topography
and major drainages.
Site Layout Map
The Site Layout Map details the proposed configuration of the dairy.
Soils Map
The USDA Soil Survey map details the area's soil types. Also included are detailed soil
descriptions.
Stormwater and Process Wastewater Management
Surface Runoff
Aurora Dairy- Colorado controls stormwater with two retention pond systems located at the
south end of the property (see Site Layout Map in Appendix A).
• West Pond contains runofffrom the west half of the dairy
• East Pond contains runofffrom the east half of the dairy
Aurora Dairy - Colorado will monitor the site and maintain appropriate diversion structures to
ensure runoff enters the appropriate stormwater collection systems.
25 year, 24-hour Storm
The 25-year, 24-hour storm event for the area west of Platteville, Colorado is 4.0 inches. Using
the SCS runoff curve number 90 for un-surfaced areas and 97 for paved or covered areas, the
amount of runoff generated during a 25-year event is 17.80 acre-feet.
These figures account for rainfall occurring directly on the pond surfaces.
10 year, 10-day Storm
The 10-year, 10-day storm event for Longmont, Colorado is 5.05 inches. Using the SCS runoff
curve number 81 for un-surfaced areas and 94 for paved or covered areas, the amount of runoff
generated during a chronic event is 19.52 acre-feet.
These figures account for rainfall occurring directly on the pond surfaces.
Aurora Dairy-Colorado Comprehensive Manure&Wastewater Management Plan 4
AgPro Environmental Services, LLC 10.10.2002
Storm water Containment Capacity
The two pond systems have a combined capacity of 36.67 acre-feet. This represents 18.87 acre-
feet more than required for a 25-year, 24-hour storm, and 17.14 acre-feet more than required for
a 10-year, 10-day storm.
Calculations for the 25-year and 10-year storms and pond capacities are in Appendix B.
Surface Runoff Management and Disposition
The stormwater pond system is designed for total evaporation. Design calculations were done
for the pond system utilizing average evaporation combined with average precipitation and the
10-wettest years' precipitation. Two tables were generated to illustrate that the system will work
as designed. The tables account for the following:
• Average precipitation values for Longmont, CO
• Precipitation values from the 10-wettest years in recorded history for Longmont, CO
• Average monthly lake-evaporation data for Longmont, CO
• Process wastewater generation rate of 0 GPD for the dairy(process water
discharged to sanitary sewer)
• Evaporation area equal to the surface area of the settling ponds when full and the
main ponds 4 full
• Dairy drainage area of 59.5 acres
• Runoff percentage from NRCS National Engineering Handbook
• Evaluating table to ensure no pumping is required to maintain capacity for a 25-
year, 24-hour or chronic storm event
�— These tables, in Appendix B, show that during average years and the 10-wettest years, the pond
system maintains capacity for a 25-year or chronic storm event.
Process Wastewater
Aurora Dairy - Colorado generates process wastewater within the milking parlor. It is estimated
that Aurora Dairy - Colorado will generate a maximum of 25,000 gallons of process wastewater
per day at maximum capacity. A table summarizes the process wastewater in Appendix B.
Dairy parlor floors and walls, milking equipment, pipelines, and tanks are washed with fresh
water.
Wastewater will flow via pipeline out of the dairy and into a pretreatment processing center
before being discharged to the St. Vrain Sanitation District via sewer line. The pretreatment
process will reduce total solids, total suspended solids, BOD5day, and ammonia to a level that
satisfies the sanitation district. The pre-treatment will include but may not be limited to the
following processes depending on cost and final design considerations:
• Solids Screening • Lagoon with Aeration
• Anaerobic Reactor • Clarifier
Ground Water Protection
The stormwater ponds and the process wastewater system will be constructed to meet the 1/32
inch-per-day maximum seepage requirement in the state's regulations. Upon completion of the
wastewater retention structures, the liners will be inspected and certified by a licensed
professional engineer. Proof of lining will be kept on site and copies forwarded to the Weld
County Department of Public Health and Environment.
Aurora Dairy-Colorado Comprehensive Manure&Wastewater Management Plan 5
AgPro Environmental Services, LLC 10.10.2002
Pond Levels
The stormwater ponds and process wastewater system will have appropriate pond-level gauges
installed when built. The gauges will show incremental depths as well as the appropriate level to
maintain capacity for a 25-year, 24-hour or chronic storm event.
Floodplains
AgPro Environmental Services, LLC, has reviewed the Weld County FEMA maps and
concluded that Aurora Dairy - Colorado and facilities will not be within a mapped 100-year
floodplain.
Off-Site Drainage Diversion
Aurora Dairy - Colorado site is bordered on three sides (west, north & east) by irrigation and/or
drainage ditches that virtually eliminate the chance of stormwater run-on. The dairy slopes south
so stormwater cannot come from that direction.
Solid Manure Management
Aurora Dairy - Colorado manages solid manure through routine pen cleaning and maintenance.
Pen density is managed to optimize the surface area and keep cows clean while maintaining
solid, dry footing for livestock. Aurora Dairy - Colorado harrows outside pens daily and cleans
them out at least semi-annually. Manure from the outside corrals and solids off of the
mechanical separation unit will be given away to farmers and/or hauled off to a third-party
composting site.
Table 1 below calculates the amount of manure produced and the associated nutrients on an"as
excreted basis". In addition, `as-hauled' and `composted' weights are calculated accounting for
predictable moisture losses. The calculations are based on NRCS Agricultural Waste
Management Field Handbook, for dairy cattle and an average capacity of 2,500 lactating cows.
Table 1: Solid Manure Produced and Associated Nutrients
NRCS Ag Waste Management Field Handbk Moisture Manure Manure TS VS Nitrogen Prosphorus Potassium
Number of Wt./hd, Total Wt., (lbs./day/ (ft3/day/ (lbs./day/ (lbs./day/ (lbs./day/ (lbs./day/ (lbs./day
Animal Type Ind lbs. lbs. (%) 1000#) 1000# 1000#) 1000#) 1000#) 1000#) /100041)
Milk Cows 2,500 1.400 3,500,000 87.5 80.0 1.30 10.00 8.50 0.45 0.07 0.26
Close-Ups _ 1,200 - 88.4 82.0 1.30 9.50 8.10 0.36 0.05 0.23
Springers - 1,000 - 87.3 85.0 1.30 9.14 7.77 0.31 0.04 0.24
Heifers - 750 - 88.3 85.0 1.30 9.14 7.77 0.31 0.04 0.24
Heifers - 450 - 89.3 85.0 1.30 9.14 7.77 0.31 0.04 0.24
Calves _ 200 - 89.3 85.0 1.30 9.14 7.77 0.31 0.04 0.24
Totals 2,500 3,500,000
Total Daily Production 280,000 4,550 35,000 29,750 1,575 245 910
Total Annual Production 102,200,000 1,660,750 12,775,000 10,858,750 574,875 89,425 332,150
Manure produced w/moisture content of 87.5% 51,100 tons
Manure to apply w/moisture content of 46,0% 11,829 tons
Compost produced wl moisture content of 40.0% 10,646 tons
Land Application of Solid Manure
Aurora Dairy - Colorado does not plan to apply solid manure to its own land. They plan to give
solid manure away to area farmers for use on the farmers' land and/or haul it off site to a third-
party composting site.
Aurora Dairy-Colorado Comprehensive Manure & Wastewater Management Plan 6
AgPro Environmental Services, LLC 10.10.2002
Record Keeping
Aurora Dairy - Colorado will keep records per Table 2 (forms are in Appendix C):
TABLE 2: RECORD-KEEPING FORMS & SCHEDULE
ITEM FORM USED FREQUENCY OF RECORDING
Rainfall Precipitation Log Each event,or more frequently during intense or long-lasting storms
Manure/Compost
Manure Removal Daily during removal
Removal Log
Pond Inspection Pond/Lagoon Monthly
Inspection Form
Limitations
AgPro Environmental Services, LLC, has no control over the services or information furnished
by others. This Comprehensive Manure and Wastewater Management Plan was prepared and
developed in accordance with generally accepted environmental consulting practices. This plan
was prepared for the exclusive use of Aurora Dairy - Colorado and specific application to the
subject property. The opinions provided herein are made based on AgPro Environmental
Services, experience and qualifications, and represent AgPro Environmental Services' best
judgment as experienced and qualified professionals familiar with the agriculture industry.
AgPro Environmental Services, LLC, makes no warranty, expressed or implied.
Aurora Dairy-Colorado Comprehensive Manure& Wastewater Management Plan 7
AgPro Environmental Services, LLC 10.10.2002
Appendix A
• Topographic Location Map
• Site Layout Map
• Soils Map and Detailed Descriptions
Aurora Dairy-Colorado Comprehensive Manure& Wastewater Management Plan 8
AgPro Environmental Services,LLC 10.10.2002
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Appendix B
• 25-year, 24-hour &10-year, 10-day storm and pond capacity
calculations
• Table 1: Stormwater Accumulation Calculation (Average
Years' Precipitation)
• Table 2: Stormwater Accumulation Calculation (10-Wettest
Years in Recorded History)
• Process Wastewater Production
Aurora Dairy-Colorado Comprehensive Manure& Wastewater Management Plan 9
Aurora Dairy
25-Year, 24-Hour 8 10-Year, 10-Day Storm Events and Pond Capacity Calculations
25-year,24-hour event
25-year, 24-hour storm amount taken off of NOAA ATLAS 2, New Dairy
Volume Ill-Isopluvials of 25-yr, 24-hr precipitation map, and within Earthen Concrete
the immediate area of the facility. Areas Areas Total
Applicable Storm Event for Location,inches I 4.00 4.00 4.00
SCS Runoff Curve Number (90 for unsurfaced lots) 90 97
(97 for surfaced lots)
S(potential max retention alter runoff begins),inches 1.11 0.31
Surface Area of Drainage Basins, acres 50.50 9.00 59.50
(Separate different drainage areas)
(Include pens, alleys,mill areas, working areas, etc.)
Inches of Runoff using SCS Runoff Curve Factor( 2.92 3.65
Minimum Retention Capacity Required,Acre-Ft. 12.28 2.74 15.02
Surface Area of Retention Structures,Acres I 8.33
'Additional Volume Required,Acre-Ft. 2.78
Total Retention Structure Volume Required,Acre-Ft. 17.80
Total Retention Structure Volume Available,Acre-Ft. 36.67
Excess Retention Structure Volume Available,Acre-Ft. 18.87
Stormwater-Only Ponds
Lagoon
Capacities Settling#1 Settling#2 West Pond East Pond
Length (Top-of-Berm) (feet) 550 550 550 550
Width(Top-of-Berm)(feet) 50 50 280 280
Liquid Depth (feet) 6 6 6 6
Slope(ft. horizontal/1 ft. vertical) 3 3 4 4
Freeboard(feet) 2 2 2 2
Liner Thickness(feet) 1 1 1 1
Totals (Cubic-Feet) 63,048 63,048 735,552 735,552
(Acre-Feet) 1.45 1.45 16.89 16.89
Surface Area @ Top-of-Berm,ft2 27,500 27,500 154,000 154,000
Surface Area @ Liquid Level, ft2 20,444 20,444 140,976 140,976
Surface Area @ 1/2-full Depth,ft2 10,400 10,400 122,400 122,400
Surface Area @ Bottom,ft2 1,004 1,004 104,976 104,976
10-year, 10-day storm amount taken from NRCS calculated data of 10-year, 10-day event
10-year events according to Colorado General CAFO Permit New Dairy
requirements, and from the nearest station to the facility Earthen Concrete
(Longmont, CO) Areas Areas Total
Applicable Storm Event for Location,inches I 5.05 5.05 5.05
SCS Runoff Curve Number (81 for unsurfaced lots)• 81 94
I (94 for surfaced lots)'
S(potential max retention after runoff begins),inches 2.35 0.638
Surface Area of Drainage Basins, acres 50.50 . 9.00 59.50
(Separate different drainage areas) I
(Include pens, alleys, mill areas, working areas, etc.)
Inches of Runoff using SCS Runoff Curve Factor] 3.03 4.36
Minimum Retention Capacity Required,Acre-Ft. 12.75 3.27 16.02
Surface Area of Retention Structures,Acres I 8.33
lAdditional Volume Required,Acre-Ft. 3.51
Total Retention Structure Volume Required,Acre-Ft. 19.52
Total Retention Structure Volume Available,Acre-Ft. 36.67
Excess Retention Structure Volume Available,Acre-Ft. 17.14
'Taken from Table 2-3 8 of NRCS publication "Technical Release 60, Design of Earth Dams and
Reservoirs", adjusted curve numer from 24 hours to 10 days.
AgPro Environmental Services, LLC 1 of 1 Eric W. Dunker, P.E.
Aurora Dairy
Table 1:Stormwater Accumulation Calculation(Average Years'Precipitation) Init.Volume
Process Water Generated,GPD= Pond Surface Area,TO= 363,000 Evaporation Area,Ih= 230,752 0
Precip.• Percent Runoff Area Total Runoff Lake Evap. Evap.Area Total Evap. Process-H2O Net Change Amt.Pumped Vol.In Lagoon Annual Pumped
Month (inches) Runoff (Acres) (Acre-Ft.) (inches)*** (Acres) (Acre-Ft.) (Acre-Ft.) (Acre-Ft.) (Acre-Ft.) (Acre-Ft.) (Acre-Ft.)
Jan 0.41 7.4% 59.50 0.44 1.20 5.30 0.53 - (0.09) -
Feb 0.38 7.0% 59.50 0.39 1.40 5.30 0.62 - (0.22) -
Mar 1.09 8.0% 59.50 1.19 2.20 5.30 0.97 - 0.22 0.22
Apr 1.70 11.5% 59.50 2.15 3.60 5.30 1.59 - 0.56 0.78
May 2.47 20.7% 59.50 4.24 4.80 5.30 2.12 - 2.13 2.90
a Jun 1.71 17.5% 59.50 2.67 5.80 5.30 2.56 - 0.11 3.02 -
2 Jul 1.11 16.2% 59.50 1.66 6.00 5.30 2.65 - (0.99) 2.03
} Aug 1.24 15.4% 59.50 1.80 5.40 5.30 2.38 - (0.58) 1.45
Sep 1.24 17.2% 59.50 1.92 4.00 5.30 1.77 - 0.15 1.60
Oct 1.31 14.5% 59.50 1.85 2.80 5.30 1.24 - 0.62 2.22
Nov 0.68 8.0% 59.50 0.74 1.60 5.30 0.71 - 0.04 2.25
Dec 0.46 8.0% 59.50 0.50 1.20 5.30 0.53 - (0.03) 2.23
Jan 0.41 7.4% 59.50 0.44 1.20 5.30 0.53 - (0.09) 2.13
Feb 0.38 7.0% 59.50 0.39 1.40 5.30 0.62 - (0.22) 1.91
Mar 1.09 8.0% 59.50 1.19 2.20 5.30 0.97 - 0.22 2.13
Apr 1.70 11.5% 59.50 2.15 3.60 5.30 1.59 - 0.56 2.69
N May 2.47 20.7% 59.50 4.24 4.80 5.30 2.12 - 2.13 4.81
a Jun 1.71 17.5% 59.50 2.67 5.80 5.30 2.56 - 0.11 4.92 -
`� Jul 1.11 16.2% 59.50 1.66 6.00 5.30 2.65 - (0.99) 3.94
> Aug 1.24 15.4% 59.50 1.80 5.40 5.30 2.38 - (0.58) 3.36
Sep 1.24 17.2% 59.50 1.92 4.00 5.30 1.77 - 0.15 3.51
Oct 1.31 14.5% 59.50 1.85 2.80 530 1.24 - 0.62 4.13
Nov 0.68 8.0% 59.50 0.74 1.60 5.30 0.71 - 0.04 4.16
Dec 0.46 8.0% 59.50 0.50 1.20 5.30 0.53 - (0.03) 4.13
Jan 0.41 7.4% 59.50 0.44 1.20 5.30 0.53 - (0.09) 4.04
Feb 0.38 7.0% 59.50 0.39 1.40 5.30 0.62 - (0.22) 3.82
Mar 1.09 8.0% 59.50 1.19 2.20 5.30 0.97 - 0.22 4.03
Apr 1.70 11.5% 59.50 2.15 3.60 5.30 1.59 - 0.56 4.60
May 2.47 20.7% 59.50 4.24 4.80 5.30 2.12 - 2.13 6.72
En
',, Jun 1.71 17.5% 59.50 2.67 5.80 5.30 2.56 - 0.11 6.83 -
`� Jul 1.11 16.2% 59.50 1.66 6.00 5.30 2.65 - (0.99) 5.85
} Aug 1.24 15.4% 59.50 1.80 5.40 5.30 2.38 - (0.58) 5.27
Sep 1.24 17.2% 59.50 1.92 4.00 5.30 1.77 - 0.15 5.42
Oct 1.31 14.5% 59.50 1.85 2.80 5.30 1.24 - 0.62 6.04
Nov 0.68 8.0% 59.50 0.74 1.60 5.30 0.71 - 0.04 6.07
Dec 0.46 8.0% 59.50 0.50 1.20 5.30 0.53 - (0.03) 6.04
Jan 0.41 7.4% 59.50 0.44 1.20 5.30 0.53 - (0.09) 5.95
Feb 0.38 7.0% 59.50 0.39 1.40 5.30 0.62 - (0.22) 5.73
Mar 1.09 8.0% 59.50 1.19 2.20 5.30 0.97 - 0.22 5.94
Apr 1.70 11.5% 59.50 2.15 3.60 5.30 1.59 - 0.56 6.50
May 2.47 20.7% 59.50 4.24 4.80 5.30 2.12 - 2.13 8.63
* Jun 1.71 17.5% 59.50 2.67 5.80 5.30 2.56 - 0.11 8.74 -
m Jul 1.11 16.2% 59.50 1.66 6.00 5.30 2.65 - (0.99) 7.75
> Aug 1.24 15.4% 59.50 1.80 5.40 5.30 2.38 - (0.58) 7.18
Sep 1.24 17.2% 59.50 1.92 4.00 5.30 1.77 - 0.15 7.33
Oct 1.31 14.5% 59.50 1.85 180 5.30 1.24 - 0.62 7.94
Nov 0.68 8.0% 59.50 0.74 1.60 5.30 0.71 - 0.04 7.98
Dec 0.46 8.0% 59.50 0.50 1.20 5.30 0.53 - (0.03) 7.95
Jan 0.41 7.4% 59.50 0.44 1.20 5.30 0.53 - (0.09) 7.86
Feb 0.38 7.0% 59.50 0.39 1.40 5.30 0.62 - (0.22) 7.63
Mar 1.09 8.0% 59.50 1.19 2.20 5.30 0.97 - 0.22 7.85
Apr 1.70 11.5% 59.50 2.15 3.60 5.30 1.59 - 0.56 8.41
May 2.47 20.7% 59.50 4.24 4.80 5.30 2.12 - 2.13 10.54
Jun 1.71 17.5% 59.50 2.67 5.80 5.30 2.56 - 0.11 10.65 -
iti
ai Jul 1.11 16.2% 59.50 1.66 6.00 5.30 2.65 - (0.99) 9.66
>- Aug 1.24 15.4% 59.50 1.80 5.40 5.30 2.38 - (0.58) 9.08
'" Sep 1.24 17.2% 59.50 1.92 4.00 5.30 1.77 - 0.15 9.24
Oct 1.31 14.5% 59.50 1.85 2.80 5.30 1.24 - 0.62 9.85
Nov 0.68 8.0% 59.50 0.74 1.60 5.30 0.71 - 0.04 9.89
Dec 0.46 8.0% 59.50 0.50 1.20 5.30 0.53 - (0.03) 9.86
Maximum Volume Pumped= - Average Volume in Pond= 5.39 Maximum Volume in Pond= 10.65
*Precipitation for Longmont,CO,NOAA ••SCS,National Engineering Handbook ***Evaporation for Longmont,CO,NOAA
AgPro Environmental Services, LLC 1 of 1 Eric W. Dunker, P.E.
Aurora Dairy
Table 2:Stormwater Accumulation Calculation(10-Wettest Years In Recorded History) init.Volume
Process Water Generated,GPO= Pond Surface Area,ft2= 363,000 Evaporation Area,ft2= 285,688 0
Precip• Percent Runoff Area Total Runoff Lake Evap. Evap.Area Total Evap. Process-H20 Net Change Amt.Pumped Vol.In Lagoon Annual Pumped
Month (inches) Runoff (Acres) (Acre-Ft.) (inches)"` (Acres) (Acre-Ft.) (Acre-Ft.) (Acre-Ft.) (Acre-Ft.) (Acre-Ft.) (Acre-Ft.)
Jan 0.26 7.4% 59.50 0.28 1.20 6.56 0.66 - (0.38) -
Feb 0.15 7.0% 59.50 0.16 1.40 6.56 0.77 - (0.61) -
Mar 0.71 8.0% 59.50 0.77 2.20 6.56 1.20 - (0.43) -
m Apr 1.35 11.5% 59.50 1.71 3.60 6.56 1.97 - (0.26) -
rn May 6.86 20.7% 59.50 11.79 4.80 6.56 2.62 - 9.16 9.16
C Jun 1.21 17.5% 59.50 1.89 5.80 6.56 3.17 - (1.28) 7.88 -
ae Jul 0.52 16.2% 59.50 0.78 6.00 6.56 3.28 - (2.50) 5.38
ig Aug 1.35 15.4% 59.50 1.96 5.40 6.56 295 - (0.99) 4.40
> Sep 0.11 17.2% 59.50 0.17 4.00 6.56 2.19 - (2.02) 2.38
Oct 2.14 14.5% 59.50 3.02 2.80 6.56 1.53 - 1.49 3.88
Nov 0.04 8.0% 59.50 0.04 1.60 6.56 0.87 - (0.83) 3.05
Dec 0.88 8.0% 59.50 0.96 1.20 6.56 0.66 - 0.30 3.35
Jan 0.27 7.4% 59.50 0.29 1.20 6.56 0.66 - (0.37) 2.98
Feb 0.26 7.0% 59.50 0.27 1.40 6.56 0.77 - (0.50) 2.49
Mar 1.51 8.0% 59.50 1.65 2.20 6.56 1.20 - 0.45 2.93
rn Apr 1.94 11.5% 59.50 2.45 3.60 6.56 1.97 - 0.49 3.42
rn May 4.31 20.7% 59.50 7.41 4.80 6.56 2.62 - 4.78 8.20
C Jun 2.52 17.5% 59.50 3.94 5.80 6.56 3.17 - 0.77 8.97 -
rNi
a Jul 0.48 16.2% 59.50 0.72 6.00 6.56 3.28 - (2.56) 6.41
08 Aug 3.99 15.4% 59.50 5.81 5.40 6.56 2.95 - 2.86 9.26
> Sep 0.74 17.2% 59.50 1.14 4.00 6.56 2.19 - (1.04) 8.22
Oct 0.85 14.5% 59.50 1.20 2.80 6.56 1.53 - (0.33) 7.89
Nov 1.92 8.0% 59.50 2.09 1.60 6.56 0.87 - 1.22 9.11
Dec 1.47 8.0% 59.50 1.60 1.20 6.56 0.66 - 0.95 10.06
Jan 1.13 7.4% 59.50 1.20 1.20 6.56 0.66 - 0.54 10.60
Feb 0.62 7.0% 59.50 0.64 1.40 6.56 0.77 - (0.12) 10.48
' Mar 1.12 8.0% 59.50 1.22 2.20 6.56 1.20 - 0.02 10.50
Apr 2.04 11.5% 59.50 2.58 3.60 6.56 1.97 - 0.61 11.11
S May 4.25 20.7% 59.50 7.30 4.80 6.56 2.62 - 4.68 15.79
C Jun 0.04 17.5% 59.50 0.06 5.80 6.56 3.17 - (3.11) 12.69 -
in
a Jul 0.72 16.2% 59.50 1.08 6.00 6.56 3.28 - (2.20) 10.49
Aug 0.93 15.4% 59.50 1.35 5.40 6.56 2.95 - (1.60) 8.89
> Sep 0.52 17.2% 59.50 0.80 4.00 6.56 2.19 - (1.38) 7.51
Oct 0.75 14.5% 59.50 1.06 2.80 6.56 1.53 - (0.47) 7.04
Nov 0.15 8.0% 59.50 0.16 1.60 6.56 0.87 - (0.71) 6.33
Dec 0.12 8.0% 59.50 0.13 1.20 6.56 0.66 - (0.52) 5.80
Jan 0.17 7.4% 59.50 0.18 1.20 6.56 0.66 - (0.48) 5.33
Feb 0.22 7.0% 59.50 0.23 1.40 6.56 0.77 - (0.54) 4.79
Mar 2.34 8.0% 59.50 2.55 2.20 6.56 1.20 - 1.35 6.14
Apr 0.96 11.5% 59.50 1.21 3.60 6.56 1.97 - (0.75) 5.39
m May 3.17 20.7% 59.50 5.45 4.80 6.56 2.62 - 2.82 8.21
C Jun 0.28 17.5% 59.50 0.44 5.80 6.56 3.17 - (2.73) 5.48 -
$ Jul 0.95 16.2% 59.50 1.42 6.00 6.56 3.28 - (1.86) 3.62
kg Aug 0.73 15.4% 59.50 1.06 5.40 6.56 2.95 - (1.89) 1.73
> Sep 0.87 17.2% 59.50 1.35 4.00 6.56 2.19 - (0.84) 0.89
Oct 0.28 14.5% 59.50 0.40 2.80 6.56 1.53 - (1.13) -
Nov 0.10 8.0% 59.50 0.11 1.60 6.56 0.87 - (0.77) -
Dec 0.66 8.0% 59.50 0.72 1.20 6.56 0.66 - 0.06 0.06
Jan 0.09 7.4% 59.50 0.10 1.20 6.56 0.66 - (0.56) -
Feb 0.15 7.0% 59.50 0.16 1.40 6.56 0.77 - (0.61) -
Mar 0.31 8.0% 59.50 0.34 2.20 6.56 1.20 - (0.86) -
R Apr 0.10 11.5% 59.50 0.13 3.60 6.56 1.97 - (1.84) -
8 May 3.62 20.7% 59.50 6.22 4.80 6.56 2.62 - 3.60 3.60
C Jun 2.38 17.5% 59.50 3.72 5.80 6.56 3.17 - 0.55 4.14 -
u Jul 1.58 16.2% 59.50 2.37 6.00 6.56 3.28 - (0.91) 3.23
it Aug 1.22 15.4% 59.50 1.78 5.40 6.56 2.95 - (1.18) 2.06
> Sep 2.53 17.2% 59.50 3.91 4.00 6.56 2.19 - 1.73 3.78
Oct 0.81 14.5% 59.50 1.14 2.80 6.56 1.53 - (0.39) 3.40
Nov 0.39 8.0% 59.50 0.43 1.60 6.56 0.87 - (0.45) 2.95
Dec 1.57 8.0% 59.50 1.71 1.20 6.56 0.66 - 1.06 4.01
AgPro Environmental Services, LLC 1 of 2 Eric W. Dunker, P.E.
Aurora Dairy
Table 2:Stormwater Accumulation Calculation(10-Wettest Years in Recorded History) Init.Volume
Process Water Generated,GPD= Pond Surface Area,ft2= 363,000 Evaporation Area,ft2= 285,688 0
Precip.• Percent Runoff Area Total Runoff Lake Evap. Evap.Area Total Evap. Process-H2O Net Change Amt.Pumped Vol.In Lagoon Annual Pumped
Month (inches) Runoff (Acres) (Acre-Ft.) (inches)•••I (Acres) (Acre-Ft.) (Acre-Ft.) (Acre-Ft.) (Acre-Ft.) (Acre-Ft.) (Acre-Ft.)
Jan 0.01 7.4% 59.50 0.01 1.20 6.56 0.66 - (0.65) 3.36
Feb 0.11 7.0% 59.50 0.11 1.40 6.56 0.77 - (0.65) 2.71
Mar 4.69 8.0% 59.50 5.12 2.20 6.56 1.20 - 3.91 6.63
Apr 1.33 11.5% 59.50 1.68 3.60 6.56 1.97 - (0.29) 6.34
8 May 4.94 20.7% 59.50 8.49 4.80 6.56 2.62 - 5.87 12.21
Z.- Jun 2.68 17.5% 59.50 4.19 5.80 6.56 3.17 - 1.02 13.22 -
g Jul 2.52 16.2% 59.50 3.77 6.00 6.56 3.28 - 0.49 13.72
12 Aug 1.25 15.4% 59.50 1.82 5.40 6.56 2.95 - (1.13) 12.59
> Sep 0.30 17.2% 59.50 0.46 4.00 6.56 2.19 - (1.72) 10.86
Oct 0.05 14.5% 59.50 0.07 2.80 6.56 1.53 - (1.46) 9.40
Nov 2.46 8.0% 59.50 2.68 1.60 6.56 0.87 - 1.81 11.21
Dec 0.57 8.0% 59.50 0.62 1.20 6.56 0.66 - (0.03) 11.18
Jan 0.54 7.4% 59.50 0.57 1.20 6.56 0.66 - (0.08) 11.10
Feb 0.31 7.0% 59.50 0.32 1.40 6.56 0.77 - (0.44) 10.65
Mar 1.38 8.0% 59.50 1.51 2.20 6.56 1.20 - 0.30 10.96
Apr 1.83 11.5% 59.50 2.31 3.60 6.56 1.97 - 0.35 11.30
8 May 0.53 20.7% 59.50 0.91 4.80 6.56 2.62 - (1.71) 9.59
Jun 1.46 17.5% 59.50 2.28 5.80 6.56 3.17 - (0.89) 8.70 -
it Jul 2.09 16.2% 59.50 3.13 6.00 6.56 3.28 - (0.15) 8.55
tg Aug 1.49 15.4% 59.50 2.17 5.40 6.56 2.95 - (0.78) 7.77
> Sep 0.32 17.2% 59.50 0.50 4.00 6.56 2.19 - (1.69) 6.08
Oct 2.79 14.5% 59.50 3.94 2.80 6.56 1.53 - 2.41 8.49
Nov 0.11 8.0% 59.50 0.12 1.60 6.56 0.87 - (0.75) 7.74
Dec 0.33 8.0% 59.50 0.36 1.20 6.56 0.66 - (0.30) 7.44
Jan 0.59 7.4% 59.50 0.63 1.20 6.56 0.66 - (0.03) 7.41
Feb 0.37 7.0% 59.50 0.38 1.40 6.56 0.77 - (0.38) 7.03
Mar 0.89 8.0% 59.50 0.97 2.20 6.56 1.20 - (0.23) 6.80
Apr 2.13 11.5% 59.50 2.69 3.60 6.56 1.97 - 0.73 7.53
S May 0.80 20.7% 59.50 1.37 4.80 6.56 2.62 - (1.25) 6.28
Jun 1.50 17.5% 59.50 2.34 5.80 6.56 3.17 - (0.83) 5.45 -
g Jul 1.62 16.2% 59.50 2.43 6.00 6.56 3.28 - (0.85) 4.60
m Aug 0.04 15.4% 59.50 0.06 5.40 6.56 2.95 - (2.89) 1.71
>- Sep 1.40 17.2% 59.50 2.17 4.00 6.56 2.19 - (0.02) 1.69
Oct 0.74 14.5% 59.50 1.05 2.80 6.56 1.53 - (0.48) 1.20
Nov 1.73 8.0% 59.50 1.89 1.60 6.56 0.87 - 1.01 2.21
Dec 1.28 8.0% 59.50 1.40 1.20 6.56 0.66 - 0.74 2.96
Jan 0.04 7.4% 59.50 0.04 1.20 6.56 0.66 - (0.61) 2.34
Feb 0.32 7.0% 59.50 0.33 1.40 6.56 0.77 - (0.43) 1.91
Mar 0.73 8.0% 59.50 0.80 2.20 6.56 1.20 - (0.41) 1.50
Apr 3.61 11.5% 59.50 4.57 3.60 6.56 1.97 - 2.60 4.10
g May 1.94 20.7% 59.50 3.33 4.80 6.56 2.62 - 0.71 4.81
Jun 1.56 17.5% 59.50 2.44 5.80 6.56 3.17 - (0.73) 4.08 -
$c' Jul 0.89 16.2% 59.50 1.33 6.00 6.56 3.28 - (1.95) 2.13
m Aug 1.15 15.4% 59.50 1.67 5.40 6.56 2.95 - (1.28) 0.85
> Sep 0.76 17.2% 59.50 1.18 4.00 6.56 2.19 - (1.01) -
Oct 1.61 14.5% 59.50 2.28 2.80 6.56 1.53 - 0.75 0.75
Nov 1.57 8.0% 59.50 1.71 1.60 6.56 0.87 - 0.84 1.58
Dec 0.34 8.0% 59.50 0.37 1.20 6.56 0.66 - (0.28) 1.30
Jan 0.58 7.4% 59.50 0.62 1.20 6.56 0.66 - (0.04) 1.26
Feb 1.45 7.0% 59.50 1.51 1.40 6.56 0.77 - 0.74 2.00
Mar 1.00 8.0% 59.50 1.09 2.20 6.56 1.20 - (0.11) 1.89
n Apr 1.09 11.5% 59.50 1.38 3.60 6.56 1.97 - (0.59) 1.30
Ri May 2.08 20.7% 59.50 3.57 4.80 6.56 2.62 - 0.95 2.25
o Jun 2.53 17.5% 59.50 3.95 5.80 6.56 3.17 - 0.78 3.03 -
a Jul 0.46 16.2% 59.50 0.69 6.00 6.56 3.28 - (2.59) 0.44
Aug 1.17 15.4% 59.50 1.70 5.40 6.56 2.95 - (1.25) -
i^-� 8Sep 0.58 17.2% 59.50 0.90 4.00 6.56 2.19 - (1.29) -
Oct 0.88 14.5% 59.50 1.24 2.80 6.56 1.53 - (0.29) -
Nov 1.28 8.0% 59.50 1.40 1.60 6.56 0.87 - 0.52 0.52
Dec 1.73 8.0% 59.50 1.89 1.20 6.56 0.66 - 1.23 1.75
Maximum Volume Pumped= - Average Volume in Pond= 5.18 Maximum Volume in Pond= 15.79
Precipitation for Longmont,CO,NOAA '•SC5,National Engineering Handbook •"Evaporation for Longmont,CO,NOAA
AgPro Environmental Services, LLC 2 of 2 Eric W. Dunker, P.E.
Aurora Dairy
Process Wastewater Production
No. of Water
Gallons/ Washes Volume
Type of Use Wash per Day (GPD)
Bulk Tank (Automatic Wash) 200 1 200
Pipeline in Parlor 200 3 600
Miscellaneous Equipment 150 3 450
Parlor Floor Wash 200 3 600
Parlor Floor Flush 2,000 10 20,000
Milk Floor 75 3 225
Total Daily Flow(GPD) 22,075
Design Factor 1.13
Design Flow(GPD) 25,000
Annual Flow(Acre-Feet) 28.01
AgPro Environmental Services, LLC 1 of 1 Eric W. Dunker, P.E.
AgPro Environmental Services, LLC 10.10.2002
Appendix C
• Precipitation Log
• Manure and/or Compost Removal Log
• Pond/Lagoon Inspection Form
Aurora Dairy- Colorado Comprehensive Manure&Wastewater Management Plan 10
AgPro Environmental Services, LLC Oct-02
PRECIPITATION LOG
(Record precipitation after each event&frequently during events if rainfall is intense or for long duration.)
Facility Name: Year:
Rain Gauge Location:
Date Time Time Elapsed Beg. Reading End Reading Total Rainfall
Comments:
AgPro Environmental Services, LLC Oct-02
MANURE and/or COMPOST REMOVAL LOG
(to track manure and/or compost removed from facility by others)
Facility Name: Year:
# Of loads Average tare-weight Total weight Total weight Person
Date
hauled of loads hauled (lbs.) hauled (lbs.) hauled (tons) hauling
Comments:
AgPro Environmental Services, LLC Oct-02
Pond/Lagoon Inspection Form
(Inspect ponds/lagoons monthly.)
Facility Name: Pond Name:
Person Performing Inspection: Date:
Item Yes/No Follow-Up Date Follow-Up Initials
Needed? Y/N Completed
2 feet freeboard existing?
25-year/24-hour capacity available?
Visible bank erosion?
Visible seepage on sides or base?
Rodent burrows or holes?
Trees, stumps or roots on dike?
Inlet clear and erosion free?
Sludge/Solids accumulation present?
Other:
Other:
Other:
Comments:
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