HomeMy WebLinkAbout520013_Repair Plan - version 2_20210714Steve Troxler
Commissioner
North Carolina Department of Agriculture
and Consumer Services
Division of Soil and Water Conservation
Lagoon Repair Plan
DC Mills Farm
Prepared By: Chris Love, PE, NC Division of Soil and Water Conservation
7/14/2021
Contents:
Page 1 —Narrative Description
Page 3 — Budget Proposal
Page 8 — Proposed Takeoff and Details
Page 9 — Soil Report
Description of Repair
Vernon Cox
Director
The southern dike at the DC Mills Farm in Jones County breached in December 2020. Based on
observations during a site evaluation conducted on 1/12/2021, it was determined that the most likely
cause for this breach was waste flow through cracks in an underlying limestone layer (see Soil Evaluation
Report). There were no indications that the lagoon's structural integrity was compromised in any other
areas besides the single breach through the southern dike.
Therefore, it is recommended that:
(1) The hole of the breach will be filled in as best as possible with clay and compacted. The
surrounding dike appears to be structurally sound and well compacted clay, so disturbing the
remainder of the dike is not necessary.
MAILING ADDRESS
Division of Soil and Water Conservation
1614 Mail Service Center
Raleigh, NC 27699-1614
Telephone: 919-707-3770
LOCATION
Old Health Building
216 West Jones Street
Raleigh, NC 27604
An Equal Opportunity Employer
(2) The entire lagoon will be lined with a 60 mil HDPE liner. A budget proposal from a local liner installation
company, Chesapeake Containment Systems, has been included with this Repair Plan. Standard details
from the installer have also been included. Chesapeake Containment will install the liner according to
manufacturer specifications, as well as NRCS Standards 359 (Waste Treatment Lagoon) and 521 (Pond
Sealing or Lining—Geomembrane or Geosynthetic Clay Liner). To prevent gas build-up under the liner, a
ventilation system will need to be included in the installation. There are two options for this listed in the
budget proposal, with the strip ventilation layer recommended.
This plan will repair the existing breach in the lagoon and prevent any additional existing cracks in the
limestone layer from resulting in breaches in the future.
Sincerely,
- 0
SEAL
045258
Chris Love, PE ER V ;
:Heel Won
Regional Engineer
`I E
7(ly%a
' CHESAPEAKE
CONTAINMENT SYSTEMS, INC.
2690-D Salisbury Hwy
Statesville, NC 28677
P: 704.208.3440
www.ccsliners.com
July 9t1, 2021
NCDA&CS - Division of Soil and Water Conservation
216 West Jones Street
Raleigh, North Carolina 27603
CCS Budget Proposal #P21-264
Attn: Chris Love
Project: Trenton, NC Hog Lagoon Lining BUDGET
Chesapeake Containment Systems, Inc. hereby proposes to furnish the following scope of work:
1.0 Chesapeake Containment Systems, Inc. (CCS) Scope of Work:
The scope of work covered by this Budget Proposal is limited to the following Bid Items:
1.1 Furnish materials, labor, equipment, and all contract required submittals to install the
following geosynthetics for the Unit prices shown.
Item
Trenton, NC Hog Lagoon Budget
Unit
Unit Price
Est Pay Qty
Extension
Workdays
1
Mobilizations
Ea.
4,500.00
1
$ 4,500.00
1.0
2
HDPE Liner
SF
0.963
104,800
$ 100,922.40
2.8
3
Boots (up to 24") - Verify Size & Qty
Ea.
630.00
2
$ 1,260.00
0.3
4
Concrete Attachment - Verify Qty
LF
37.60
0
$ -
-
OPT
Perimeter Vents (@ 75FT Spacing)
Ea.
210.00
17
$ 3,570.00
0.2
$ 110,252.40
5.0
ADD
Geotextile Cushion Layer
SF
0.485
104,800
$ 50,828.00
1.2
ADD
Geocomposite Venting Layer
SF
1.107
104,800
$ 116,013.60
1.9
ADD
Strip Venting Layer (20FT Grid)
LF
3.745
9,000
$ 33,705.00
0.9
1.2 The following clarifications are provided to this Budget Proposal:
1.2.1 This Budget Proposal includes 1 mobilization; additional mobilizations at unit
price shown.
1.2.2 This Budget Proposal is based on contractor having all subgrade ready prior to
mobilization. Every day without all subgrade available at 8am will be charged
a premium of $4,500 in addition to established rates.
1.2.3 CCS to provide equipment and operator(s) for duration of liner installation to
assist with liner installation.
_ CH ESAPEAKE
1.2.4 Wage Scale and Union Requirements are EXCLUDED
1.2.5 Measurement and Payment is to be all installed materials measured in 3D
including Anchor Trench but excluding waste, scrap and overlap.
1.2.6 Installation and Material specifications for geomembrane not included. CCS
includes industry standards for both the supply/production of materials as well as
the installation of these materials. Introduction of any additional information can
result in revised pricing.
1.2.7 Anchor Trench, Boots, Concrete Attachment and other geosynthetic details were
not included. CCS assumes a standard 2ft x 2ft anchor trench at full perimeter of
pond and standard details for all other items/details required for installation.
Introduction of any additional information can result in revised pricing.
1.2.8 All third -party material conformance testing is excluded. However, third -party
conformance testing can be provided at an additional fee.
1.2.9 Onsite destructive and nondestructive testing of geomembrane is included by
CCS. Third -Party Destructive Testing is not included.
1.2.10 Pricing reflected above is valid for both the supply and installation of materials
listed. Any changes in scope can result in revised pricing.
1.2.11 Pricing attached is budgetary and shall be used for budgetary purposes only.
**Due to the unstable market for petroleum -based products this Budget Proposal is only good for fourteen days.
This Budget Proposal is subject to change at anytime during the validity period AND up to time of shipment due to
claims of force majeure by raw material suppliers and/or geosynthetic manufacturers.**
2.0 Material Specifications: The materials supplied for this project will be supplied and subject to
the manufacturer's standard material specifications.
3.0 Services Furnished By Others (at no cost to CCS):
3.1 Preparation of all surfaces to be covered per the specifications. All site work,
earthwork, leveling, trenching, backfilling, concrete preparation.
3.2 Digging and backfilling of anchor trench is performed and paid for by others.
3.3 Contractor is responsible for cleaning of all existing liner at tie-in areas and
maintenance of those tie-in areas. Tie-in to be broom swept with a MINIMUM of 48"
exposed and cleaned PRIOR to mobilization. Any cleaning of tie-in by CCS will be
charged on a Time and Material basis. Installation of tie-in with less than 48" exposed
to be charged on a Time and Material basis.
3.4 Click on the Pre -mobilization Checklist link to view site condition requirements that
should be achieved, prior to CCS mobilization.
3.5 Provide a subgrade surface that is stable enough to drive a front-end loader or forklift
on without the machine causing tire ruts.
3.6 Continuous removal of rainwater, any other source of water, and snow at lining site.
3.7 Access to and from work site for CCS employees including maintenance of roads and
equipment access.
3.8 Access to and use of sanitary facilities for CCS employees.
3.9 Sand or chip stone for filling sandbags provided at lining site.
CHESAPEAKE
CONTAINMENT SYSTEMS, INC.
3.10 Supply equipment and personnel to manage deliveries and unload materials prior to
CCS mobilization.
3.11 Contractor is responsible for safe storage of materials including storing materials on
dry positively graded stone pad and on dunnage and covering of all geosynthetics
with plastic and ballast. Maintenance of the cover when CCS is off site is the
responsibility of the contractor.
3.12 All third -party QC/QA testing, unless specifically mentioned in Item1. This includes
but is not limited to, laboratory testing of the field samples and all third -party testing.
3.13 Provide dedicated prepared storage and parking area within 500 feet of the area to be
lined. This is in addition to material storage area. Materials further than 500' away will
be moved on a Time and Material basis.
3.14 Disposal of waste off site if necessary. Maintain dumpsters in close proximity to the
work area, empty and replace when full.
3.15 Surveyed as -built drawings if necessary. We have included measured as -built drawing.
3.16 Site specific training, health exams or monitoring unless specifically mentioned in Item 1.
4.0 Schedule, Delays and Scope Modification:
4.1 Phased installation will incur a charge of $10/LF (higher on Wage Scale projects) of
New to New Tie in between phases and is to be prepared BY OTHERS.
4.2 All pricing is based on a minimum site access availability of (10) hours per day (6) days
per week. A standing time charge of $4,500/Day to be charged for any day we cannot
work due to others excluding Sundays and the five major holidays (ie: ADD $4,500/day
for any site shutdowns or extended weekends).
4.3 Work is priced for continuous and logical installation sequence with Contractor having
prepared subgrade available for installation.
4.4 Removal of all rainwater, subgrade re -work, weather recovery of damage to be by
others. After a weather event (precipitation above .10") subgrade to be available for
deployment within 24 hours after the end of the event. Standing time to be charged if
subgrade is not ready after 24 hours.
4.5 Contractor to provide a written schedule with signed Budget Proposal, contract or
Purchase Order. Re -Scheduling fees will be as follows.
4.5.1 Mobilization Rescheduling 8+ days before mobilization date 0% of
Mobilization Cost
4.5.2 Mobilization Rescheduling 5-7 days before mobilization date 25% of
Mobilization Cost
4.5.3 Mobilization Rescheduling 3-5 days before mobilization date 50% of
Mobilization Cost
4.5.4 Mobilization Rescheduling 1-2 days before mobilization date 75% of
Mobilization Cost
4.6 Work delays or interruptions caused by incomplete subgrade preparation, incomplete
structures or for any other reason beyond the control of CCS, shall be charged to the
contractor or owner at a rate of $95.00 per manhour for a maximum of 8 hours per day.
Union or prevailing wage projects will have an additional charge of $40 per hour
($135/hr total).
CHESAPEAKE
CONTAINMENT SYSTEMS, INC.
4.7 CCS pricing includes installation between the dates of March 15th and October 31 St
Work beyond these dates will be considered Winter Work.
4.8 Work during Winter Months: $0.10 per SF of each layer and $4,500.00 for standby
days (includes weather). Union Jobs are higher and dependent on the wage scale
requirements.
4.9 CCS does not have crews available from December 15th thru January 7th
4.10 Crew availability from December 8th thru February 28th is very limited.
4.11 All pricing is based on performance of installation within (365) days of the date of
this Budget Proposal.
4.12 All pricing is based on materials shipping within (90) days from the notice to proceed.
Additional costs may be incurred if materials have not shipped within that timeframe.
4.13 Liquidated Damages, if applicable, will never exceed $500 per day or those assessed
by the owner, whichever is less and must be directly and completely attributed to CCS
scope of work.
4.14 CCS will not be charged or back charged for any costs, liquidated damages, delays or
damages unless specifically notified in writing within 3 days of occurrence of
Contractor claimed loss or delay. Failure to provide such written notice shall forfeit all
rights of Contractor for claim of damage.
5.0 Exceptions:
5.1 Cost of performance and payment bonds are not included unless specifically included
in item 1. Performance and Payment Bonds can be provided for 2% of contract value
with all work and warranty complete within (2) years. Additional duration is an
additional cost.
5.2 Permit fees are not included.
5.3 Union or prevailing wages do not apply to this Budget Proposal unless specifically
included in Item 1.
5.4 All costs related to damage caused by other parties to the liner system.
6.0 Safety:
6.1 Work environment level to be level "D" only. Pricing includes work in standard PPE
including Gloves, eye protection, High Visibility Vest, Hard Hat, Boots.
6.2 It is the contractor or owners' responsibility to provide MSDS sheets and any other
information on hazardous materials used or stored on site.
6.3 CCS has included up to (1) hour of site -specific training. Additional site -specific
training will be charged at the standby rate.
6.4 CCS will provide a minimum of (1) bi-lingual person on the crew. We exclude working
on sites which exclude Spanish speaking workers.
6.5 Contractor or Owner to provide eye wash station for CCS use within a reasonable
distance from CCS work area.
6.6 CCS will provide personnel with a minimum of 10HR OSHA training. Supervisors will
have 30HR OSHA training.
6.7 CCS excludes providing a full-time on -site Health and Safety officer. One can be
provided for additional cost.
CHESAPEAKE
CONTAINMENT SYSTEMS, INC.
6.8 CCS assumes all soil types (with the exclusion of anchor trenches) as Class C soil,
requiring a slope of 1.5:1 as indicated in CRF 1926 Subpart P Appendix B Figure B-1,
unless the soil is reclassified and the requirements for the protective systems are
changed by a professional engineer in accordance with 1926.652(b)(4)(i) and 1926
Subpart P Appendix A (c)(4).
7.0 Warranty:
7.1 The installation warranty will be provided by and subject to CCS's standard warranty.
7.2 The warranty for the material will be provided by and subject to the material
manufacturer's warranty.
8.0 Terms of Payment:
8.1 CCS reserves the right to extend credit in our sole discretion. Any Contractor
requesting credit with CCS will be required to fill out both a Credit Application and a
project information sheet. Prepayment for materials and services will be required
without established credit.
8.2 CCS will invoice for stored materials. Payment will be made to CCS within 45 calendar
days after receipt of invoice. Retainage will not be held on stored materials.
8.3 Installation will be billed as job progresses; payment is due within 45 calendar days
after receipt of invoice. Upon completion of the scope of work in Paragraph 1.1,
payment will be received by CCS within 45 calendar days following receipt of final
invoice, retainage on installation will be released as soon as all close out
documentation is submitted to contractor.
8.4 Interest of 2% per month will be charged on overdue invoices.
8.5 Contractor hereby acknowledges that CCS relies solely and exclusively on the credit of
the Contractor for payment for its work. All payments, including progress payments,
payments for change orders and extra work, retainage and final payment are the sole
responsibility of the Contractor and shall be paid according to the terms of payment
stipulated herein and on invoice documents. Receipt of payment from the Owner by
the Contractor is specifically not a condition precedent to payment for payments due
to CCS by the Contractor.
Thank you for your interest in our services, please do not hesitate to contact us for further information
or clarifications.
Chesapeake Containment Systems, Inc.
Jordan Sellers
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North Carolina Division of Soil and Water Conservation
Technical Services Section, Soil Interpretive Services
Soils Evaluation Report
Date of Evaluation: 1-12-2021 Report Date: 1-14-2021
Project: Lagoon Repair at farm 52-13 Client: Donnie Mills
Objective of Soils Evaluation: To evaluate soils used in the construction of an anerobic lagoon
that has developed a leak.
Soil Scientists: Edward Stephens, Soil Scientist, NCDA&CS DSWC
Other Participants: Martin McLawhorn, Environmental Specialist, NCDA&CS DSWC
Marlene Salyer, NCDENR DWR
Chris Love, Engineer, NCDA&CS DSWC
Kevin Weston, Smithfield Foods
Donnie Mills, Farm Owner
Location: The farm is near Hargett's Crossroads on Lee Mills Road in Jones County. Coordinates
recorded in decimal degrees are: 35.012769, -77.614509.
Geology/Topography: The lagoon is built on an upland landscape position on soil mapped as
Goldsboro loamy sand, 0-2% slope. Tuckahoe Creek flows near the lagoon. A soil map is attached to
this report.
Field Work: A large tracked excavator with an operator was on site to assist with the soil evaluation.
Two pits were excavated and then filled in after evaluation. Elevation and depth measurement data was
collected with a Topcon laser construction level and should be considered preliminary. A site map
showing the lagoon and approximate locations of the conveyance is attached.
General Observations:
1. The lagoon was completed in 1994. The construction checklist has a hand-written note that
mentions a geotextile liner that was covered by 1' of "good plastic material". This note does not specify
the type of geotextile or the USCS classification of the soil installed as a liner. Mr. Mills stated that clay
for the lagoon liner and dike wall core was trucked in form Pink Hill, NC.
2. The lagoon structure appeared to be well maintained. The structure was free of trees and was
covered in grass.
3. A hole over 8' deep and 3-4' in diameter was observed on the toe slope of the lagoon on the outside
bordered by Tuckahoe Creek. A photograph of the hole is included as Figure 1. The hole had been
created by the flow of effluent under pressure from the lagoon. A hole approximately 3' in diameter
1
was observed on the inside of the lagoon on the inner slope. The hole was the inlet to the conveyance
and had been temporarily diked with soil from the top of the structure.
4. The hole on the inside of the lagoon was enlarged with the excavator to provide access to the clay
core. The core appeared to be constructed of cohesive soil that was compacted. The inlet hole was
nearly vertical and is not thought to penetrate through the core. The hole was filled in and tamped with
the excavator bucket to serve as a temporary repair to prevent effluent discharge.
5. The hole on the outside of the lagoon was enlarged to determine how effluent was leaving the
lagoon. At a depth of approximately 8.5' a layer of hard sedimentary rock or marl was observed. The
excavator could not continue digging past the top of that layer. The soil that was excavated around the
outlet hole was native, coarse textured soil with some silt and clay content. The excavated soil was
returned to the pit and was compacted with the excavator bucket.
6. Effluent was observed entering the outlet hole/excavated pit from the Tuckahoe Creek side instead of
the lagoon side. The volume of the flow was similar to a 6" irrigation pipe with very low pressure, the
effluent bubbled into the pit from an unseen opening in the sedimentary rock.
6. According to Mr. Mills, Tuckahoe Creek has exceeded its banks several times recently due to heavy
rains associated with hurricanes. Flood waters from Tuckahoe Creek have encroached on the toe slope
of the lagoon structure before receding.
Results:
Based on observations of the effluent conveyance it seems likely that the clay liner has
failed and allowed effluent to discharge from the lagoon structure. A localized repair of the
liner in the conveyance and adjacent area should be sufficient to repair the structure. Clay
from a local clay mine or bentonite should be considered. The core of the lagoon structure is
thought to be in good repair since the discharge was not attributed to an overtop event or high
levels of effluent and the dike wall remains in place.
A possible cause of the liner failure is the amount of water that has been absorbed,
discharged or transmitted through the soil and fractured sedimentary rock adjacent to and
under the lagoon structure. Due to the recent hurricanes and tropical weather systems that
have passed through southeastern North Carolina the water table has been at or above the
surface for extended periods. Recent temporary changes to the hydrology could have allowed
soil and rock to shift. A weak spot in the lagoon liner may have allowed the flow of effluent
down through the sedimentary rock and back to the surface on the outside toe slope of the
lagoon structure.
2
For questions or comments, contact Edward Stephens at 910-585-3792 (email:
edward.stephens@ncagr.gov).
Edward Stephens
Soil Scientist
N.C. Division of Soil and Water Conservation
RERERENCES:
Daniels, R.B., Buol, S. W., Kleiss, H.J., Ditzler, C.A. 1999. Soil Systems in North Carolina, Technical Bulletin 314. North Carolina State University,
Soil Science Department. Raleigh, North Carolina 27695-7619.
Natural Resources Conservation Service, National Soil Survey Center. 1998. Field Book for Describing and Sampling Soils. United States
Department of Agriculture. Lincoln, Nebraska.
North Carolina Agricultural Research Service. 1992. Redoximorphic Features for Identifying Aquic Conditions. North Carolina State University
Technical Bulletin 301. 33 pages.
Soil Survey Division Staff. 1993. Soil survey manual. Soil Conservation Service. U.S. Department of Agriculture Handbook 18. (Last modified
March 28, 2011)
Soil Survey Staff. Soil Survey of Jones County, North Carolina. Natural Resources Conservation Service. U.S. Department of Agriculture
https://websoilsurvey.sc.egov.usda.gov/App/WebSoilSurvey.aspx retrieved 1-14-2021
Soil Survey Staff. 2014. Keys to Soil Taxonomy, Twelfth Edition. Natural Resources Conservation Service. U.S. Department of Agriculture.--
U. S. Department of Agriculture, Natural Resources Conservation Service. 1997. Agricultural Handbook Number 590: Ponds —Planning, Design,
Construction. Washington, DC.
3
D. C. Mills Farm Lagoon
1-14-2021
No Scale
Locations are approximate
Site Map
4
N
A
Soil Map
Selected Soil Series Labels
Go
Goldsboro
Mk
Muckalee
NoB
Norfolk
M-W
Misc. Water
5
Photo of the outlet hole
Courtesy of David May, NCDENR
Figure 1
6