WQ0002702_Regional Office Historical File Pre 2018 (19)

SUSTAINABLE STRATEGIES FOR GLOBAL LEADERS
JRFgua-LEOctober 25, 2007 T 3 0 2007
North Carolina Department of Environment and Natural Resources
Division of Water Quality, Aquifer Protection Section
610 East Center Avenue
Suite 301
Mooresville, NC 28115
Attention: Mr. Andrew H. Pitner, P.G.
Regional Environmental Supervisor
Subject: Completion of Berm Reconstruction
Alchem, Inc.
8135 Red Road
Rockwell, NC
Permits No. WQ0002702 and WQ0o16388
Delta Project No. 5E0702101P
D E LTA Dear Mr. Pitner:
This is to inform you that work has been completed in the reconstruction of the
stormwater retention berm at Alchem, Inc. in Rockwell, North Carolina in
accordance with the previously submitted plans and specifications.
Photographs are included below to illustrate the various phases of the
construction.
The construction operations were inspected at various phases of the process to
assure that construction was in accordance with the approved plans and
specifications.
As prescribed in the design, the former pond area was graded to assure.proper
draining to the pond and containment within the pond and bermed area (Photo
# 1). The inner wall, top, and outer wall of the previously existing berm was
cleared of vegetation and re-graded/compacted.
XInogei
E.8008 Corporate Center Drive Suite 100 Charlotte, NC 28226 USA
Phone: [phone] Fax: [phone]

North Carolina Department of Environment and Natural Resources
Division of Water Quality, Aquifer Protection Section
Alchem, Inc.
Rockwell, NC
October 26, 2007
Photo #1— Reshaped Pond
2 of S
A geogrid material (Tensar BX 1200) was installed on the outer wall of the berm to facilitate placement and
compaction of the additional two to three feet width of clean, compacted fill (Photos #2 & #3).
Photo #2 — Soil Stabilization Geogrid Installation

North Carolina Department of Environment and Natural Resources
Division of Water Quality, Aquifer Protection Section
Alchem, Inc.
Rockwell, NC
October 26, 2007
Photo #3 - Geogrid Installation Complete
3of8
Clean fill soil was placed and compacted onto the geogrid to provide additional horizontal thickness of at least
two feet to the berm (Photo #4). This additional compacted thickness provides an improved barrier against
migration of impounded storm water through the berm.

North Carolina Department of Environment and Natural Resources
Division of Water Quality, Aquifer Protection Section
Alchem, Inc.
Rockwell, NC
October 26, 2007
4 of 8
Photo #4 — Placement of Compacted Soil Layer
After completion of the compacted soil layer, an interceptor trench was dug at the foot of the berm. When
lined and completed with gravel and perforated pipe, the trench would convey any water escaping through the
compacted soil berm and synthetic barrier to a sump for pumping back to the pond (Photo #5).
Photo #5 — Interceptor Trench and Sump

North Carolina Department of Environment and Natural Resources
Division of Water Quality, Aquifer Protection Section
Alchem, Inc.
Rockwell, NC
October 26, 2007
5 of 8
During the week of October 9, geosynthetic installation professionals from Landsaver Environmental were
mobilized to the site to install the three -layered impermeable barrier system. The geosynthetic system consists
of two layers of 30 mil PVC liner separated by a double sided composite layer. Installation of the geosynthetic
barrier is illustrated in Photos #6 through #9.
K
A.
Photo #6 — Impermeable Barrier Installation (first PVC layer)
1
6
�j
V
Photo #7 — PVC Layer in Trench

North Carolina Department of Environment and Natural Resources
Division of Water Quality, Aquifer Protection Section
Alchem, Inc.
Rockwell, NC
October 26, 2007
Photo #8 — Intermediate Composite Layer
6 of S
Photo #9 — Final PVC Layer

North Carolina Department of Environment and Natural Resources
Division of Water Quality, Aquifer Protection Section
Alchem, Inc.
Rockwell, NC
October 26, 2007
7 of 8
After installation of the geosynthetic barrier system, which provides redundancy for protection of infiltration
of storm water through the compacted soil berm, gravel and perforated piping was placed into the PVC lined
trench at the bottom of the berm (Photo #10). As a third redundancy, the trench would collect any storm water
escaping through the compacted berm and geosynthetic barrier. This water would then flow through the pipe
to a concrete sump installed at the south end of the trench, to be pumped back to the pond for use in the
production process (Photo #11).
Photo #10 — Bottom Trench w/Perforated Pipe
Photo #11— Trench Collection Sump

North Carolina Department of Environment and Natural Resources
Division of Water Quality, Aquifer Protection Section
Alchem, Inc.
Rockwell, NC
October 26, 2007
8 of 8
A layer of soil was then placed over the geosynthetic liners to facilitate vegetative growth to control erosion
(Photo #12). After seeding, a turf reinforcement mat (Landlock 435 TR1V1) was installed to protect the
vegetative growth. The construction work was completed on October 19, 2007, with the seeding, fertilization
and mat cover completed after rain the following week.
Photo #12 — Final Cover (pre -seeding)
I certify, from my inspections and interviews with knowledgeable parties, that this project was constructed in
conformance with the approved design plans and specifications.
Sincerely,
DELTA CONSULTANTS
�11,�� 0
- opat'
Gary C. Ribblett, P.E.
Project Manager
cc: Randall Andrews - Alchem

GEOSYNTHETICS PORTION OF
NEW STORM WATER RETENTION BERM CONSTRUCTION SPECIFICATIONS
COPY NOT FOR CONSTRUCTION
Alchem, Inc.
Rockwell, North Carolina
Delta Project 5EO702-101-P
June 8, 2007 D
JUN 1 8 2001
Prepared for:
Alchem, Inc.
2042 Buie Philadelphius Road
Red Springs, North Carolina
OE LTA
8008 Corporate Center Dr. Suite 100, Charlotte, North Carolina.28226
704 541 9890 800 477 7411
0

TABLE OF CONTENTS
Page
1.0 INTRODUCTION.....................................................................................................................................1
2.0 GENERAL CONDITIONS.......................................................................................................................2 .
2.1
Site Background............................................................................................................................2
2.2
Remedial Objective.......................................................................................................................2
2.3
Building Codes/Permits.................................................................................................................2
2.4
Job Site Administration.................................................................................................................
3
2.5
Site Cleaning.................................................................................................................................3
2.6
Site Health and Safety..................................................................................................................
3
2.7
Utilities...........................................................................................................................................5
2.8
Bid Format.....................................................................................................................................5
2.9
Method of Submittal......................................................................................................................6
2.10
Time and Place of Submittal.........................................................................................................6
2.11
Right of Rejection..........................................................................................................................
7
2.12
Bid Requirements.........................................................................................................................7
2.13
Change Orders/Out-of-Scope Work.............................................................................................
8
2.14
Insurance......................................................................................................................................
8
2.15
Invoice Format..............................................................................................................................
9
2.16
Contract.........................................................................................................................................9
2.17
Submittal.......................................................................................................................................9
2.18
Warranty......................................................................................................................................10
2.19
Additional Information.................................................................................................................10
3.0 GEOSYNTHETICS PROVISION AND INSTALLATION OF GEOSYNTHETICS................................10
3.1
Geosynthetics.............................................................................................................................10
4.0 DOCUMENTATION..............................................................................................................................11
5.0 REMARKS............................................................................................................................................11
FIGURES
Figure 1
Site Map with Existing Conditions
Figure 2
Site Map with Modified Berm
Figure 3
Berm Modifications Cross Section
Figure 4
Downstream Berm Face Detail
Figure 5
Final Grading Plan
Figure 6
Geomembrane-Geonet-Geomembrane Cross Section
APPENDICES
Appendix A Bid Form
Appendix B: Terms and Conditions of Contract

STORM WATER RETENTION BERM CONSTRUCTION SPECIFICATIONS
ALCHEM, INC.
ROCKWELL, NORTH CAROLINA
DELTA PROJECT 5E0702-101-P
1.0 INTRODUCTION
This construction specification outlines the geosynthetics portion of the work for construction of a new
storm water retention berm and berm cut-off trench with underdrain, at the Alchem facility, in Rockwell,
North Carolina (herein referred to as "the Site") as shown on Figures 1 and 2). The purpose of this
Construction Specification is to provide specifications for completing the associated geosynthetics
materials installation.
For purpose of clarity, the following terminology is used frequently in this package:
Owner Alchem, Inc.
Construction Manager On -site representative, as designated by Owner
Contractor All geosynthetics work associated with the work for construction
of a new storm water retention berm and berm cut-off trench with
underdrain at the Alchem facility will be performed by the
Contractor.
Work All materials and labor required for the geosynthetics portion of
work for construction of a new storm water retention berm and
berm cut-off trench with underdrain, at the Alchem facility.
Engineer Delta
Contractor shall be familiarized with all existing conditions and limitations of the Site.
Questions regarding this Construction Specification (CP) shall be directed to:
Mr. Gary Ribblett
Delta Consultants
8008 Corporate Center Drive, Suite 100
Charlotte, NC 28226
Direct Phone: [phone]

Geosynthetics Portion Of Storm Water Retention Berm Construction Specifications
Alchem, Inc., Rockwell, NC
Delta Project No.: 5EO702-101-P
June 8, 2007
Page 2 of 12
2.0 GENERAL CONDITIONS
2.1 Site Background
An existing storm water containment berm consisting of manmade, earthen construction exists at the
above referenced property as shown on Figure 1. The containment berm is utilized to retain storm water
which drains from a bauxite residuals monofil area at the above -referenced property. There has been a
degree of storm water seepage observed to be associated with the containment berm. The storm water is
reportedly slightly acidic in nature. The following specifications summarize the geosynthetics work
associated with the construction of a new storm water retention berm and berm cut-off trench with
underdrain.
2.2 Remedial Objective
To address the need to provide an improved storm water retention berm and associated storm water
retention/drainage, these specifications are intended to provide the geosynthetics portion of the new
storm water retention berm and berm cut-off trench with underdrain.
2.3 Building Codes/Permits
Contractors shall provide all necessary construction permits and licenses. Contractor shall pay all
government charges and inspection fees necessary for execution of work that are applicable at time of
opening bids.
Contractor shall give notices and comply with laws, ordinances, building and construction codes, rules,
and regulations applicable to work. If Contractor observes that specifications or drawings do not comply,
Contractor shall give Construction Manager prompt written notice, and any necessary changes shall be
made. If Contractor performs any work knowing, or having reason to know, that it is contrary to such
laws, ordinances, rules, and regulations without such notice to the Construction Manager, Contractor
shall bear the resulting costs. It shall be the Contractor's responsibility to make sure that the
specifications and drawings are in accordance with such laws, ordinances, rules, and regulations.
Building, plumbing, ventilation, electrical, and excavating work permits from the appropriate municipal,
regional, or state authorities if required, shall be obtained by Contractor.

Geosynthetics Portion Of Storm Water Retention Berm Construction Specifications
Alchem, Inc., Rockwell, NC
Delta Project No.: 5EO702-101-P
June 8, 2007
Page 3 of 12
2.4 Job Site Administration
Contractor shall provide competent, suitable, qualified personnel to survey, layout, and perform work as
required by the contract documents. Contractor shall maintain good discipline and order at site at all
times.
Contractor shall dismiss incompetent and incorrigible employees from the work site when requested by
Construction Manager, and such person shall not be permitted to return to work without written consent of
Construction Manager.
No person whose physical condition is such as to make his employment dangerous to his health and
safety, or to the health and safety of others, shall be employed in work.
2.5 Site Cleaning
Contractor shall conduct cleaning and disposal requirements to comply with codes, ordinances,
regulations, and antipollution laws. Contractor shall execute periodic cleaning to keep work site and
adjacent properties free from accumulation of waste materials, rubbish, and windblown debris resulting
from construction operations.
Contractor shall remove waste debris and rubbish from site at least weekly and dispose of it at legal
disposal areas away from the site.
Upon completion of work, Contractor shall conduct inspection of sight -exposed interior and exterior
surfaces and all work areas to verify that entire work area is clean.
2.6 Site Health and Safety
The safety and health of site workers and other individuals is of paramount importance to the Owner, and
the Contractor is required to perform all Work in accordance with existing regulations. Any disregard for
the provision of these Health and Safety requirements may be deemed just and sufficient cause for
termination of the Contract without compromise or prejudice to the rights of the Contractor.
Contractor shall be responsible for the health and safety of all persons on the project site areas and must
provide the appropriate safety measures, safeguards, training, and equipment as may be required by
various regulatory agencies. Construction Manager in no way will be responsible or liable for overseeing,
implementing, enforcing, or maintaining safety at project site areas.

Geosynthetics Portion Of Storm Water Retention Berm Construction Specifications
Alchem, Inc., Rockwell, NC
Delta Project No.: 5EO702-101-P
June 8, 2007
Page 4 of 12
The Contractor's health and safety practices shall follow the standards and guidelines established in the
regulations listed below.
1. Safety and Health Standards 29 CFR 1910 (General Industry), U.S. Department of Labor,
Occupational Safety and Health Administration (OSHA). Hereafter referred to as "29 CFR 1910."
2. OSHA Safety and Health Standards 29 CFR 1926 (Construction Industry), U.S. Dept. of Labor,
OSHA.
3. OSHA Standard 2226 — Excavations. U.S Dept. of Labor, OSHA.
The Contractor shall comply with any rules or regulations pertaining to hazards encountered. At a
minimum, Contractor shall comply with the following:
A. Prepare a Health and Safety Plan (HASP) for normal activities and emergency response,
specifically for this project (see below).
B. Have a designated health and safety officer (HSO).
C. Post conspicuously, appropriate warnings and emergency phone numbers.
The HASP shall address, at a minimum, the following elements:
A. Measures to be taken by Contractor and Subcontractor(s) to control physical and chemical
hazards associated with site work. Contractor's standard policies may constitute much of the
HASP. Contractor's HSO shall sign and date the HASP.
B. Staff organization, responsibilities, and authorities; site description; hazard analysis for each
project task and operation; personal protective equipment; standard operating procedures and
work practices; communications; illumination; site control measures; personal hygiene and
decontamination; equipment decontamination; emergency equipment and first aid; emergency
response and contingency procedures; and logs, reports and record keeping.
C. An Accident Prevention Plan (APP) that addresses methods for avoiding physical hazards (e.g.
open manholes). Contractor and Subcontractor(s) shall follow the APP throughout the Work.
The APP shall include, at a minimum, safety meetings, fire prevention and protection, walking
and working surfaces, site housekeeping, sanitation, daily safety inspections, and accident
reporting.

Geosynthetics Portion Of Storm Water Retention Berm Construction Specifications
Alchem, Inc., Rockwell, NC
Delta Project No.: 5EO702-101-P
June 8, 2007
Page 5 of 12
Contractor or Subcontractor(s) shall quickly notify Construction Manager of any unforeseen hazard,
safety issue, or condition they observe during the Work.
The Contractor will conduct a brief daily project briefing and Health and Safety briefing with Construction
Manager and all on -site personnel. During this briefing, the Contractor will identify the number of staff
that will be working on the site during the day and anticipated work activities for the day.
2.7 Utilities
Contractor will confirm the location of all overhead and underground utilities prior to beginning any work.
For work immediately adjacent to a utility, or during excavation that will expose a utility or other buried
obstruction, hand or light equipment excavation shall be used as directed by Construction Manager to
determine its extent. Damages to utility lines or subsurface construction will be reported immediately to
Construction Manager. Damage to utilities will be repaired by the appropriate utility company immediately at
the Contractor's expense.
2.8 Bid Format
The basis of the bid submittal will be in accordance with the Bid Proposal Form included in Appendix A. All
equipment and supplies shall be delivered F.O.B. to the Site. All shipping costs and applicable taxes shall
be included in the bid submittal. Any deviations or exceptions in the bid preparation shall be noted on the
bid form. All bidders must follow, understand, and comply with the following bid instructions:
1. Contractor's bid shall include furnishing of all labor, including full-time competent supervision,
materials, supplies, construction tools and equipment, utilities and services, hoisting,
transportation, receiving, handling and storage, insurance, applicable taxes and all other services
and expenses necessary to perform the work described herein.
2. Bidder is advised that replies to any requests for clarifications of this bid will be issued by written
addenda to all Bidders. All questions regarding this bid must be submitted to Delta as identified
in this section.
3. Written clarification and directions will be issued by the Engineer. Statements and interpretations
by any other persons are invalid. All questions pertaining to the bid or technical specifications will
be received up to close of business (DATE TO BE DETERMINED). Written clarifications will be
submitted to all bidders by close of (DATE TO BE DETERMINED).
4. Contracting documents are included as an attachment (Appendix B) to the bid document. Any
contract resulting from this bid document will be based on these documents.

Geosynthetics. Portion. Of Storm Water Retention Berm Construction Specifications
Alchem;Inc.; Rockwell, NC
Delta Project No.: 5E0702-101-P
June .8,-2007.
- ..Page 6 of 12
5. No extension of the bid due date will be allowed unless Bidder is otherwise specifically advised. by
the Engineer.
6. Bidder is advised that other companies have been requested to bid on -the requirements hereof..
7. .Bidder is advised that alternate bids are acceptable; however, any alternate bid will be evaluated
only if a bid is submitted that is fully responsive to, and in strict compliance with, the Scope:of
Work.
8. Bids shall be submitted in strict accordance with. the Scope of Work plus any and all other
attachments or documents made a part of this bid request by. reference herein.
2.9 Method of Submittal
Bids shall.be marked as follows:
BID FOR
GEOSYNTHETICS PORTION OF
NEW STORM WATER. RETENTION BERM CONSTRUCTION SPECIFICATIONS
Name of Bidder
1.. Your attention is _directed to the closing time and date stated in this bid request. Please mail or
(" deliver yourbid in sufficient time to meet this requirement. Unless the date is officially extended,
any bid submitted after the date specified will not be considered.
2. A letter containing prices .only, to .be followed by supplemental information or a.facsimile; will not "
j be considered. as responsive to this request for bid. Unless. the bid due date_ is extended, any bid A
submitted after that -date will not be accepted for evaluation:
j
i
- 2.10 Time and Place of Submittal
I� Completed bid forms (1 package with. 4 copies) .are due by 4:00 P.M. EST on (DATE TO BE
l _ DETERMINED). Faxed copies will be accepted. Submit bids to:
Mr. Gary Ribbletf _ --
Delta Environmental Consultants, Inc:
8008 Corporate Center Drive, Suite 100
Charlotte, NC 28226
Direct Phone: [phone]
Fax: [phone]
E-mail: gribblettadeltaenv.com

Geosynthetics Portion Of Storm Water Retention Berm Construction Specifications
Alchem, Inc., Rockwell, NC
Delta Project No.: 5EO702-101-P
June 8, 2007
Page 7 of 12
2.11 Right of Rejection
The Owner reserves the right to waive minor irregularities in the bids and to reject any and all proposals. No
obligation, either expressed or implied, exists on the part of Owner to make an award for the work or for
- costs incurred in the preparation of the bid covered by this request for proposal.
2.12 Bid Requirements
1. Schedule: Contractor shall coordinate with Construction Manager to schedule commencement
of construction activities to begin (DATE TO BE DETERMINED). Contractor shall complete the
scope of work no later than three weeks following commencement of Work. If Contractor expects
the scope of work to take longer, it shall be reported to the Engineer. If Contractor expects to be
unavailable to begin work by (DATE TO BE DETERMINED), Contractor shall note the earliest
available date.
2. Bidder shall furnish a Gantt chart or equivalent schedule detailing the proposed construction
schedule for completion of the work as shown and specified in the attached documents. Enough
detail shall be provided in the schedule to demonstrate an understanding of the work -flow within
each major work element. The Bidder may propose an alternative extended schedule if cost
savings can be achieved. This cost savings shall be submitted as a supplement to the bid. The
Bidder shall submit the base bid in accordance with the schedule constraints defined herein and
not assume that extended schedules will be granted.
3. Project Approach/Sequence: Bidder shall furnish a brief project summary identifying
sequencing of the work and any difficulties the bidder foresees in completion of the work. The
bidder shall also show an understanding of the work and identify key approaches to completion of
the work that would support selection of your firm, including proposed schedule of submittals,
excavation techniques, timely execution of the work, safety management, etc.
4. Licenses: Bidder shall affirm that it holds all required certifications and licenses to conduct the
work.
5. Subcontract: Bidder shall list and completely describe each portion of the work it proposes to
subcontract plus the name(s) and qualifications of any and all proposed Subcontractors, including
name and location of disposal facilities intending to use.
6. Pricing: Bidder shall submit its pricing proposal in exact accordance with the provisions in
Attachment A.
7. Exceptions: Bidder shall include a list of any exceptions to the proposed contract.

Geosynthetics Portion Of Storm Water Retention Berm Construction Specifications
Alchem, Inc., Rockwell, NC
Delta Project No.: 5EO702-101-P
June 8, 2007
Page 8 of 12
2.13 Change Orders/Out-of-Scope Work
Contractor shall issue Construction Manager a request for change order for any revision to the scope of
work encountered during the project. The request shall describe the additional work required, accompanied
by an estimated cost to complete the work. All change orders must be signed by a Construction Manager
representative prior to initiation of any additional work. Out -of -Scope Work (either greater than/in addition to
or less than the amounts shown on the base bid form) shall be compensated using the Unit Rates specified
in the bid submittal in the bid multiplied by the actual units used.
Bidder shall submit a general current insurance certificate with their bid. NOTE: The successful bidder
will be required to name Alchem Inc. as additional insured.
1. Bidder shall at its sole expense maintain and, shall ensure that its lower tier Contractors maintain
during the performance of the Work covered by this Contract, carry the following insurance:
a. Worker's Compensation insurance in compliance with the law or laws of the state or states in
which employees are hired or will work, and Employer's Liability Insurance with limits of not
less than $500,000 for each accident or occurrence.
b. Comprehensive Automobile Liability insurance, covering owned, non -owned, or hired
vehicles, including Contractual Liability Insurance to cover liability assumed in Article VII of
this contract, with combined single limit of not less than $1,000,000 per occurrence for bodily
injury and property damage.
c. Commercial General Liability Insurance (occurrence coverage trigger) including products -
completed operations coverage and Contractual Liability insurance to cover liability assumed
in Article VII of this Contract, with combined single limits of not less than $1,000,000 per
occurrence for bodily injury and property damage.
The amount of insurance in compliance with the requirements of 2.16 (1) (a), (b), and (c) above is not to
be construed as either a limitation or satisfaction of the indemnification obligation contained in the
Contract.
2. Contractor shall provide Owner with certificates evidencing the coverage required, including
provision for not less than thirty days' advance written notice to Owner and Engineer of
cancellation or material change. Contractor shall secure from any and all lower tier Contractor's

Geosynthetics Portion Of Storm Water Retention Berm Construction Specifications
Alchem, Inc., Rockwell, NC
Delta Project No.: 5EO702-101-P
June 8, 2007
Page 9of12
certificates evidencing similar insurance coverage, which shall be provided before Contract
operations begin.
3. All Commercial General Liability, Automobile Liability, and Excess Liability policies shall expressly
include:
a. a provision naming Alchem, its subsidiaries, affiliates and agents and all of their directors,
officers, agents and employees and Contractor's lower tier Contractors which can not satisfy
the requirements under 1 (b) and (c) above, as Additional Insureds;
b. Severability of Interest clause in favor of the Additional Insured; and
All insurance provided by Contractor and its lower -tier Contractors shall contain a Waiver of Subrogation
endorsement in favor of Alchem, its subsidiaries, affiliates and agents and all of their directors, officers,
agents and employees.
2.15 Invoice Format
On final invoice, all Contractors must provide an itemized breakdown of the cost in a format consistent
with the supplied bid form. As a condition for final payment for work performed hereunder, Contractor
shall submit with final invoice, a duly executed "Contractor's Final Release and Waiver of Claims" Form
(see Appendix B). Any release submitted that is qualified, modified or on any other form will not be
accepted and final payment will not be made.
2.16 Contract
Included, as Appendix B, are the proposed Terms & Conditions of Contract. Contractor shall review this
document carefully and note any exceptions to the agreement on the bid.
2.17 Submittal
Contractor shall submit one copy of each submittal, as outlined hereafter in this document, directly to
Construction Manager's representative within 10 days of contract award, except as otherwise noted.
Submittal documents will be reviewed by Construction Manager for a final decision within one week after
being received. Each submittal will be approved, approved with modification, or disapproved. Approved
submittals shall not be construed as a complete check, but will only indicate that general construction
methods, materials, and other information are satisfactory. Approval will not relieve Contractor's
responsibility to complete Work in accordance with project plans and specifications, regulatory
requirements, and industry standards. Contractor shall be responsible for equipment dimensions. After

Geosynthetics Portion Of Storm Water Retention Berm Construction Specifications
Alchem, Inc., Rockwell, NC
Delta Project No.: 5E0702-101-P
June 8, 2007
Page 10 of 12
submittal approval, no re -submittal for the purpose of substituting materials and/or equipment will be
given consideration unless accompanied by an explanation as to why a substitution is necessary.
Contractor shall mark all corrections required by the Construction Manager on disapproved submittals
and resubmit within seven calendar days for approval. All re -submittals shall be at Contractor's expense.
If plan resubmittal is required by the Contract Manager, the Contractor will be held to all existing
schedules established prior to the resubmittal.
2.18 Warranty
Contractor shall warrant all materials used for the project and installation and construction for a period of
one year after the project is completed and accepted by Engineer.
2.19 Additional Information
This bid request shall not create any relationship, contractual or otherwise, between the Owner and Bidder,
and Owner shall not be liable for any expenses incurred by Bidder in the preparation and submittal of any
quotation. Owner reserves the right to accept other than the lowest price quotation and to reject any
quotation in whole or in part, or to reject all quotations with or without notice or reason, and if no quotation is
accepted, to abandon the work or to have the work performed in such a manner as Owner may elect.
3.0 GEOSYNTHETICS PROVISION AND INSTALLATION OF GEOSYNTHETICS
3.1 Geosynthetics
All geosynthetics work will be performed by the contractor.
Contractor will provide and install all geosynthetics as shown on Figures 1, 2, 3, 4, 5, and 6.
Geosynthetics work shall include the provision of applicable geosynthetic materials (geomembranes,
geonets, geotextiles) and installation of applicable geosynthetic materials (geomembranes, geonets,
geotextiles) according to these specifications:
• All geosynthetics work to be coordinated with the overall construction of the modified storm water
retention berm which is being conducted by others.
• The geotextile, geomembranes, and geonet should be installed as shown on Figures 1, 2, 3 ,4,
5, and 6.
• The geosynthetics portion is to be provided by either Layfield or Landsaver Environmental as
specified in the following specification sections:

Geosynthetics Portion Of Storm Water Retention Berm Construction Specifications
Alchem, Inc., Rockwell, NC
Delta Project No.: 5EO702-101-P
June 8, 2007
Page 11 of 12
o The geotextile applied between the reshaped existing berm and compacted additional
material shall be a Tensar Earth Technologies Structural Geogrid BX1200, as provided
by Landsaver Environmental, or equivalent.
o The geomembranes applied on the downstream face of the modified storm water
retention berm shall be a Layfield HDPE Textured as the primary liner and a Layfield
EnviroLiner 4030 as the secondary liner or alternatively 30 mil PVC material for the
primary and secondary liners as provided by Landsaver Environmental.
o The geonet applied on the downstream face of the modified storm water retention berm
shall be a Layfield GSE Fabrinet HS Geocomposite (Double -Sided) or a Skaps Transnet
HDPE Composite 220 as provided by Landsaver Environmental.
o The geomembranes in the cut-off trench shall be 30 mil PVC.
Landlock 435 as provided by Landsaver Environmental, or equivalent, shall be provided for the base of
the topsoil cover to provide for soil erosion control.
4.0 DOCUMENTATION
The contractor will provide a daily safety meeting log and a daily quality control report. The daily safety
meeting log must include the topics covered and the signatures of all personnel present at the meeting.
The daily quality control report must include any on -site personnel and equipment, what work was
accomplished, and any problems identified with solutions.
5.0 REMARKS
The recommendations contained in this bid package represent Delta's professional opinions based upon
currently available information and are arrived at in accordance with currently acceptable professional
standards. This report is based upon a specific scope of work requested by the Owner. The contract
between Delta and the Owner outlines the scope of work, and only those tasks specifically authorized by
that contract or outlined in this bid package were performed. This bid package is intended only for the
use of the Owner and anyone else specifically listed on this report. Delta will not and cannot be liable for
unauthorized reliance by any other third party. Other than as contained in this paragraph, Delta makes
no express or implied warranty as to the contents of this report.

Geosynthetics Portion Of Storm Water Retention Berm Construction Specifications
Alchem, Inc., Rockwell, NC
Delta Project No.: 5EO702-101-P
June 8, 2007
This bid package was prepared by DELTA ENVIRONMENTAL CONSULTANTS, INC.
Brian Quillia, PE.
Project Engineer
Gary C. Ribblett, P.E.
Project Manager
Date: 06/08/07
Date: 06/08/07
0 6/0o i
Page 12 of 12

FIGURES

---� ---- -- --�--- ---� - -I
STREAM
MODIFIED ROAD
•
MODIFIED
BERM FACE
TEMPOARY BERM -�
DURING MODIFIED
BERM CONSTRUCTION
FILL AREA '- POND SUMP
REGRADED PUMP SYSTEM
PER FIGURE 5) TO LAGOON #2
SUMP PUMP FOR
LIQUID TRANSFER
TO POND
TRANSFER PIPING
TO POND
LAGOON #1
LAGOON #2 1:d O
C:3 OFFICE
PRODUCTION 0
LAGOON #3 AREA
RED ROAD
FIGURE 2
SITE MAP WITH
MODIFIED BERM
ALCHEM, INC
8135 RED ROAD
ROCKWELL, NORTH CAROLINA
PROJECT
PREPARED BY
DRAWN BY
5E070210101P
MTG
DATE
REVIEWED BY
FILE NAME
06/01/07
FIGURE 2
E LTA

0
5.0'
SS
SS
SS
SS
RESHAPED
EXISTING
BERM
SEE
SECIFICATIONS
GEOTEXTILE/GEOGRID -�
FOR STRUCTURAL
APPLICATION IN SUPPORT
OF ADDED MATERIAL
COMPACTED ADDITIONAL
MATERIAL FOR
DOWNSTREAM FACE
TOP SOIL &
GRASS COVER WITH
GEOTEXTILE SUPPORT
GEOMEMBRANE -
GEONET -
GEOMEMBRANE LAYER
SEE FIGURE 6
CUT-OFF TRENCH
WITH UNDERDRAIN
TOE FILTER
TO SUMP PUMP
(SAND)
(SEE FIGURE 4)
FIGURE 3
BERM MODIFICATIONS
CROSS SECTION
ALCHEM, INC
8135 RED ROAD
ROCKWELL, NORTH CAROLINA
PROJECT NO.
PREPARED BY
DRAWN BY
5EO702101P
I MTG
05/29/07
FIGURE 3 1 ID E LTA

TOE FILTER GEONET
(SAND)
NEW GEOMEMBRANE
TOPSOIL WITH GRASS
RESHAPED
EXISTING
BERM/DAM
x xxx o xxxxxx
x
x x
x x
x x
x
x x x x
GEOMEMBRANE 1:1
SAND & GRAVEL
GRADED GRAVEL PERFORATED UNDERDRAIN
OR CRUSHED ROCK SET AT 1% SLOPE TOWARDS
3.0, SUMP PUMP
FIGURE 4
DOWNSTREAM BERM
FACE DETAIL
ALCHEM, INC
8135 RED ROAD
ROCKWELL, NORTH CAROLINA
PROJECT NO. PREPARED BY DRAWN BY
5E0702101P MTG 0100*
DATE REVIEWED BY FILE NAME
05/18/07 FIGURE 4 ID E LTA

STREAM ,71�
EXISTING
BERM
STORMW
DITCH
SITE MAP WITH
EXISTING CONDITIONS
ALCHEM, INC
8135 RED ROAD
ROCKWELL, NORTH MOLINA
PROJECT NO. PREPARED BY DRAWN BY
5EO702101P MTG
DATE REVIEWED BY FILE NAME
05/18/07 FIGURE 1 E:) E L TA

GEONET
GEOMEMBRANE
X U x X X X X X X iX X X X
GEOMEMBRANE
SEE SPECIFICATIONS
FIGURE 6
GEOMEMBRANE - GEONET -
GEOMEMBRANE LAYER CROSS SECTION A -A'
ALCHEM, INC
8135 RED ROAD
ROCKWELL, NORTH CAROLINA
PROJECT NO. PREPARED BY DRAWN BY
5EO702101P MTG
DATE REVIEWED BY FILE NAME
05/18/07 FIGURE 6 [D E LTA

APPENDICES

APPENDIX A
Bid Form

Scope of Work/Bid Form
Alchem, Inc.
2042 Buie Philadelphius Road
Red Springs, North Carolina
Page 1 of 3
ITEM 1. — GEOSYNTHETICS WORK
No.
Description
Unit
Qty
Unit
Total
Costs
1
Mobilization, job site cleanup, general
LS
conditions, etc.
2
Provision of specified geosynthetics material as
SF
shown on project drawings andspecification.
3
Installation of specified geosynthetics material
SF
as shown on project drawings andspecification.
Total:
SUBMITTED on 12
(Firm Name)
(Signature of Person Authorized to Sign)
(Type Name and Title)
Business Address:

APPENDIX B
Terms and Conditions of Contract

TERMS AND CONDITIONS
Contractor shall provide all labor and supervision, all materials, construction tools, facilities and
equipment, and shall perform all work and render all services necessary for and incidental to the proper
completion of work for the installation of geosynthetics portion of the work for construction of a new storm
water retention berm and berm cut-off trench with underdrain, at the Alchem facility, in Rockwell, North
Carolina
SCHFDIILF-
Work shall commence:
Work shall be completed by approximately
All work shall be performed under the direction of Owner's Representative.
TOTAL PRICE NOT -TO -EXCEED: S (or Lump Sum/Unit Price which ever applies)
INVOICING
All invoices shall be accompanied by adequate documentation to justify all charges. Invoices shall
be submitted to:
Alchem
2042 Buie Philadelphius Road
Red Springs, NC 28377
REQUIREMENT FOR FINAL PAYMENT
As a condition for final payment for work performed hereunder, Contractor shall submit with final
invoice, a duly executed "Contractor's Final Release and Waiver of Claims" Form C3301 copy of
which is attached. Any release submitted that is qualified, modified or on any other form will not
be accepted and final payment will not be made.

CONTRACTOR'S FINAL RELEASE AND WAIVER OF CLAIMS
Purchase Order
CONTRACTOR'S FINAL RELEASE
AND WAIVER OF CLAIMS
KNOW ALL PERSONS BY THESE PRESENTS,
that
--a corporation organized under the laws of the State
of
--a partnership
of
--a sole proprietor.
in consideration of the sum
of
lawful money of the United States, and other goods and valuable consideration, does hereby release and
discharge Alchem, Inc of and from all debts, demands, claims and charges and from any and all rights
and liens which it now has or may have by reason of the work, services, equipment and materials
performed or furnished pursuant to its Purchase Order and/or Contract dated with Alchem,
Inc. and any amendments and change orders thereto (hereinafter collectively referred to as "the
Contract"); and
Hereby represents that all work to be performed pursuant to the Contract has been completed, that it has
paid and discharged all materialmen and others for all work, labor, services and material of whatsoever
nature furnished to it in connection with the Contract; that there are no claims and no liens against the
property to which the Contract applies by any of its Suppliers or persons furnishing labor or services to it
in connection with the Contract; and
Hereby agrees to promptly pay and release of record all mechanic's, materialman's and like liens filed by
others in connection with work covered by the Contract which may in the future affect the property to
which the Contract applies; and
Hereby agrees to defend, indemnify, and save Alchem, Inc., its officers, directors, employees and agents
harmless from any liability or expense because of any such claims or liens, or the enforcement thereof.
IN WITNESS WHEREOF, the said
has caused
--its corporation seal to by hereunder affixed and these presents to be signed by its duly authorized
officer
--these presents to be signed by a duly authorized partner
--these presents to be signed
day of , 20_
(Corporate Partnership or Proprietorship's Name)
By (Signature and Title of Authorized Officer) OR
(Signature of Authorized Partner) or (Signature of Proprietor)
STATE OF )
SS:
COUNTY OF

On the day of 1 20_, before me came
to me known, who being by me duly sworn, did depose and say that he/she resides
that he/she is
--the of the corporation described in, and which executed the foregoing
instrument that he/she knows the corporate seal; that it was so affixed by order of the board of directors
of said corporation, and that he/she signed his/her name thereto by like order.
--a of the partnership described in and which executed the foregoing
instrument; and that he/she signed his/her name thereto per authority of said partnership.
--a sole proprietor, and that he/she executed the forgoing instrument.
My Commission Expires
Notary Public
C-3301 (2/00)

SUSTAINABLE STRATEGIES FOR GLOBAL LEADERS
J ! E June 1, 2007
U N4 2007 North Carolina Department of Environment and Natural Resources
Division of Water Quality, Aquifer Protection Section
NC DENR MRO 610 East Center Avenue
D - A uifer Protection Suite 301
Mooresville, NC 28115
t�k
Attention: Mr. Andrew H. Pitner, P.G.
Regional Environmental Supervisor
Subject: Response to May 18, 2007 Overdue Notice
Alchem, Inc.
8135 Red Road
Rockwell, NC
Delta Project No. 5EO702101 P
Dear Mr. Pitner:
Enclosed, on behalf of our client, Alchem, Inc., please find the information
requested in your May 18, 2007 letter to Mr. Randall Andrews of Alchem, Inc.
Recommendations and evaluation of compaction options for constructabiity on
the residuals fill area are described in the enclosed letter report prepared for
Alchem by S&ME. Additionally, the enclosed modified timeline has added
schedule for liner repair of the lagoons if needed after cleanout and inspection
as requested by Ms. Ellen Huffman of your office.
Also for your information, work is nearing completion on the redesign of the
runoff retention berm at the facility. These design documents will be forwarded
to your office upon completion.
If you have any questions or comments, please feel free to contact me at (704)
N
543-3910, or Mr. Andrews at [phone].
�\ Sincerely,
DELTA ENVIRONMENTAL CONSULTANTS, INC.
Gary C. Ribblett, P.E.
Project Manager
cc: Randall Andrews - Alchem
enclosures
\Inogen
5910 Rice Creek Parkway Suite 100 St. Paul, MN 55126 USA
Phone: [phone] Fax: [phone]

May 31, 2007
Alchem Incorporated
8135 Red Road
Rockwell, North Carolina
Attention: Mr. Randall Andrews
Reference: SUMMARY OF FIELD-TESTING SERVICES
Alchem - Proposed Storage Tanks
Rockwell, North Carolina
S&ME Project No. 1359-07-040
Dear Mr. Andrews:
S&ME, Inc. is continuing to provide construction materials testing services on an on -call basis at the
above referenced project. Our services were performed in accordance with S&ME Proposal No. 1359-
17851-07 dated March 19, 2007 and S&ME Agreement for Services (Form AS-041). This report
summarizes the field testing services performed between May 1, 2007 and May 16, 2007.
Between May 1, 2007 and May 16, 2007 an engineering technician from our office performed four (4)
field density tests (Tests 1 through 4) on the fill material in the area of the proposed storage tanks. The
tests and retest indicated densities equaling or exceeding 95 percent of the Standard Proctor maximum dry
density. One (I) standard Proctor Test (ASTM D-698) was performed in our laboratory to establish the
moisture -density relationships of the fill soils for comparison with our field density tests. Test results are
only representative of the depth and location indicated. S&ME was not requested to be onsite for f ill time
testing and several feerof material -was placed ivit/t out monitoring. The results of the field density tests
along with the laboratory Standard Proctor Test are enclosed for your review.
These field density tests represent the compaction of the designated location and elevation and may not be
representative of the compaction of the overall fill mass. Typically, the compacted density is dependent
upon Iift thickness, soil moisture content, compaetive effort, and soil type. If these factors remain
constant, then the tests should be representative of the overall compaction.
phis report has been prepared in accordance with generally accepted construction material testing practice
for specific application to this project. if changes or deviations from the observations or conditions noted
in this report occur after the date of this report, this report will not be considered valid unless these
changes are reviewed and our report modified or verified in writing. The conclusions and
recommendations contained in this report are based upon applicable standards of practice in this
geographic area at the time this report was prepared. No other warranty, express or implied, is made.
SuME, IIJc. / 385 Timber Road, Suite 104 / Mooresville, NC 281 15-7899 / p 704.662.8625 i 704.662.8735 / www.smeinc.com

...........
Summary of Field -Testing Services S&ME Project No. 1359-07-040
Alchem — Proposed Storage Tanks May 31, 2007
S&ME, Inc. appreciates the opportunity to provide testing services. If you have any questions conceming
these results, please contact our office.
Very truly yours,
S&MM, INC.
�O 5J
Richard J Bichsel
Staff Professional Christop r rown, P.E.
Moores ill ffice Manger
Senior Reviewed By: Brad McLester, P.E.
Senior Engineer
RJBIWMP
Copies Submitted: 2
Enclosures:
,,Summary of Density Test Results" sheet
"Standard Proctor Test" sheet
2

�J�.Ana ':♦ k.,;.,.:
Summary of ]Density Test Results
Project Name: Alchem, Inc.
Client: Alchem, Inc., 8135 Red Road, Rockwell, NC 28138
Page No,
Report Date:
Project No.:
May 31, 2007
1359-07-040
Test
No. Date
In -Place Density Test
Dry Moisture
Type Density Content
Check Plug Data
Dry Moisture
Density Content
Reference Standard
Optimum
Ref, Moisture
Type Curve MDD Content
Compaction
Percent Percent
Specified In -Place
Location
a
Elevation
/ or Stone
Depth
1
05/02/07
D 1556
61.5
53.1
55.1 I
50.0
D 698
S-1
62.1 1
55.3
95
99
5' East of center of pod (offset) A
-15'
2
OS/02/07
D2937
66.3 1
52.3
61.9 j
44.2
D698
S-1
S-1 i
66.4
68.0
48.2
47.5
95
95
100_-__
4 '�
Q
Center of pad ®
; i lolding lank pad e
-I5,
.7'
3
05/16/07
D 2937
63.7
47.8
59.5
40.9
D 698 I
4
05/16/07
D 2937
68.2
46.3
-
-
D 698
S-1
68.0
47,5
95
00_
RETEST 93 r
-7'
• = Failed Specified Compaction, '• = Failed Specified Moisture Content
Notes:
All Test Locations and Elevations are Approximate
References; ASTM D 1556: Density and Unit Weight of Soil In Place by the Sand Cone Method, ASTM D 698: Laboratory Compaction Characteristics of Soil Using Standnrd Effort, ASTM D 2937; Density of
Soil In Place by the Drive Cylinder Method
Distribution: Randall Andrews/Alchem, Inc.
Chris Brown/S & ME, Inc, Staff Professional
Name (Technical Responsibill0) Signature Position
S&rvlb, Inc. 385 Timber Road, Suite 104, Mooresville, NC 281 15 [phone] Fax [phone]

n
Laboratory Report Version 4.2
Moisture - Density Report
S&ME Project #:
1359-07-040 Report Date:
Project Name:
Alchem Inc. Test Date(s):
Client Name:
Alchem Inc.
Client Address:
Rockwell, NC
May 17, 2007
5/11-17/07
Boring ##: Sample #: S-1 Sample Date: May 1, 2007
Location: Offset: Depth:
Sample Description: White tan silty sand
Maximum Dry Density 62.1 PCF. Optimum Moisture Content 55.3 %
ASTM D 698 Method A
75.0
70.0
Lc
60.0
55.0
4oisture-Density Relations of Soil and Soil -Aggregate Mixture;
50.0 -w-
45.0
50.0
tv Curve Disolaved
55.0 60.0
Moisture Content (%)
Fine Fraction ❑x
Soil Properties
Natural Moisture
Content:
Liquid Limit: .
Plastic Limit:
Plastic Index:
Specific Gravity:
% Passing
3/4"
1/2"
3/8"
#4
Oversize Fraction
Bulk Sp. Gravity
% Moisture
65.0 70.0 Oversize Fraction
MDD
Opt MC
Corrected for Oversize Fraction (ASTM D 4718) ❑
Sieve Size used to separate the Oversize Fraction: 44 Sieve I] 3/8 inch Sieve ❑ 3/4 inch Sieve ❑
Mechanical Hammer 0 Manual Hammer ❑ Moist Preparation ❑ Dry Preparation El
References: ASTM D 698: Laboratory Compaction Characteristics of Soil Using Standard Effort
ASTM D 2216: Laboratory Determination of Water (Moisture) Content of Soil and Rock by Mass
Technical Responsibility: Chris Brown
Soil Description is based on a visual classification.

NEW STORM WATER RETENTION BERM CONSTRUCTION SPECIFICATIONS
COPY NOT FOR CONSTRUCTION
Alchem, Inc. FIN
Rockwell, North Carolina
.1 2111Delta Project 5E0702-101-P4
r Protection
June 8, 2007
Prepared for:
Alchem, Inc.
2042 Buie Philadelphius Road
Red Springs, North Carolina
0 E LTA
8008 Corporate Center Dr. Suite 100, Charlotte, North Carolina 28226
704 541 9890 800 477 7411

TABLE OF CONTENTS
Page
1.0 INTRODUCTION.....................................................................................................................................1
2.0 GENERAL CONDITIONS.......................................................................................................................2
2.1 Site Background.........................................................................................................................
2
2.2 Remedial Objective....................................................................................................................
2
2.3 Building Codes/Permits..............................................................................................................2
2.4 Job Site Administration..............................................................................................................3
2.5 Site Health and Safety...............................................................................................................
3
2.6 Utilities........................................................................................................................................4
2.7 Insurance....................................................................................................................................
5
3.0 TEMPORARY DAM CONSTRUCTION/PLACEMENT..........................................................................
6
3.1 Temporary Berm Construction...................................................................................................6
4.0 STORM WATER RETENTION POND....................................................................................................6
4.1 Storm Water Retention Pond.....................................................................................................
6
5.0 STORM WATER RETENTION BERM....................................................................................................
6
5.1 Modification of Existing Berm.....................................................................................................6
5.2 Construction of New Downstream Berm Section
.......................................................................7
5.3 Construction of Berm Geosynthetics Face................................................................................
8
5.4 Construction of Berm Topsoil Face............................................................................................
8
5.5 Construction of Berm Toe Filter.................................................................................................
8
5.6 Cutoff Trench with Underdrain...................................................................................................
8
5.7 Inspections.................................................................................................................................9
5.8 Site Restoration..........................................................................................................................9
6.0 MECHANICAL WORK............................................................................................................................9
6.1 Cut-off Trench Transfer Sump and Sump Pump
.......................................................................9
6.2 Storm Water Retention Pond Pump System............................................................................10
7.0 ELECTRICAL WORK...........................................................................................................................10
8.0 DOCUMENTATION..............................................................................................................................10
9.0 REMARKS............................................................................................................................................11
FIGURES
Figure 1
Site Map with Existing Conditions
Figure 2
Site Map with Modified Berm
Figure 3
Berm Modifications Cross Section
Figure 4
Downstream Berm Face Detail
Figure 5
Final Grading Plan
Figure 6
Geomembrane-Geonet-Geomembrane Cross Section
Appendix
Appendix A: Terms and Conditions of Contract

NEW STORM WATER RETENTION BERM CONSTRUCTION SPECIFICATIONS
ALCHEM, INC.
ROCKWELL, NORTH CAROLINA
DELTA PROJECT 5E0702-101-P
1.0 INTRODUCTION
This document outlines the scope of work for construction of a new storm water retention berm, a
temporary dam, berm cut-off trench with underdrain, a reshaped/resized storm water retention pond, cut-
off trench sump pump system, and storm water retention pond pump system at the Alchem facility, in
Rockwell, North Carolina (herein referred to as "the Site") as shown on Figures 1 and 2). The purpose of
this Construction Specification is to provide specifications for completing these installations.
For purpose of clarity, the following terminology is used frequently in this package:
Owner Alchem, Inc.
Construction Manager On -site representative, as designated by Owner
Contractor All new storm water retention berm, temporary dam, berm cut-off
trench with underdrain, a reshaped/resized storm water retention
pond, cut-off trench sump pump system, and storm water
retention pond pump system work will be performed by the
Contractor. Installation of geosynthetics to be performed by a
separate contractor.
Work All materials and labor required for the construction of the new
storm water retention berm, temporary dam, berm cut-off trench
with underdrain, a reshaped/resized storm water retention pond,
cut-off trench sump pump system, and storm water retention
pond pump system.
Engineer Delta
Contractor shall be familiarized with all existing conditions and limitations of the Site.
Questions regarding the Construction Specification (CP) shall be directed to:
Mr. Gary Ribblett
Delta Consultants
8008 Corporate Center Drive, Suite 100
Charlotte, NC 28226
Direct Phone: [phone]

New Storm Water Retention Berm Construction Specifications
Alchem, Inc., Rockwell, NC
Delta Project No.: 5E0702-101-P
June 8, 2007
Page 2 of 11
2.0 GENERAL CONDITIONS
2.1 Site Background
An existing storm water containment berm consisting of manmade, earthen construction exists at the
above referenced property as shown on Figure 1. The containment berm is utilized to retain storm water
which drains from a bauxite residuals monofil area at the above -referenced property. There has been a
degree of storm water seepage observed to be associated with the containment berm. The storm water is
reportedly slightly acidic in nature. The following specifications summarize the geosynthetics work
associated with the construction of a new storm water retention berm and berm cut-off trench with
underdrain.
2.2 Remedial Obiective
To address the need to provide an improved these specifications are intended to modify the plan layout of
the storm water retention basin to provide an improved storm water retention berm and associated storm
water retention/drainage, The scope of work involves the re -shaping and re -sizing of the storm water
retention pond and storm water retention berm and will include the installation of a culverted storm water
drainage conveyance to the storm water retention pond, a cut-off trench sump pump system, and a storm
water retention pond pump system.
2.3 Building Codes/Permits
Contractor shall provide all necessary construction permits and licenses. Contractor shall pay all
government charges and inspection fees necessary for execution of work that are applicable at time of
opening bids.
Contractor shall give notices and comply with laws, ordinances, building and construction codes, rules,
and regulations applicable to work. If Contractor observes that specifications or drawings do not comply,
Contractor shall give Construction Manager prompt written notice, and any necessary changes shall be
made. If Contractor performs any work knowing, or having reason to know, that it is contrary to such
laws, ordinances, rules, and regulations without such notice to the Construction Manager, Contractor
shall bear the resulting costs. It shall be the Contractor's responsibility to make sure that the
specifications and drawings are in accordance with such laws, ordinances, rules, and regulations.
Building, plumbing, ventilation, electrical, and excavating work permits from the appropriate municipal,
regional, or state authorities if required, shall be obtained by Contractor.

New Storm Water Retention Berm Construction Specifications
Alchem, Inc., Rockwell, NC
Delta Project No.: 5EO702-101-P
June 8, 2007
Page 3 of 11
2.4 Job Site Administration
Contractor shall provide competent, suitable, qualified personnel to survey, lay out, and perform work as
required by the contract documents. Contractor shall maintain good discipline and order at site at all
times.
2.5 Site Cleaning
Contractor shall conduct cleaning and disposal requirements to comply with codes, ordinances,
regulations, and antipollution laws. Contractor shall execute periodic cleaning to keep work site and
adjacent properties free from accumulation of waste materials, rubbish, and windblown debris resulting
from construction operations.
Contractor shall remove waste debris and rubbish from site at least weekly and dispose of it at legal
disposal areas away from the site.
Upon completion of work, Contractor shall conduct inspection of sight -exposed interior and exterior
surfaces and all work areas to verify that entire work area is clean.
2.6 Site Health and Safety
All excavation activities will be conducted in accordance with OSHA excavation standards (29 CFR 1926)
and any other federal, state, or local requirements.
The safety and health of site workers and other individuals is of paramount importance to the Owner, and
the Contractor is required to perform all Work in accordance with existing regulations. Any disregard for
the provision of these Health and Safety requirements may be deemed just and sufficient cause for
termination of the Contract without compromise or prejudice to the rights of the Contractor.
Contractor shall be responsible for the health and safety of all persons on the project site areas and must
provide the appropriate safety measures, safeguards, training, and equipment as may be required by
various regulatory agencies. Construction Manager in no way will be responsible or liable for overseeing,
implementing, enforcing, or maintaining safety at project site areas.
The Contractor's health and safety practices shall follow the standards and guidelines established in the
regulations listed below.
1. Safety and Health Standards 29 CFR 1910 (General Industry), U.S. Department of Labor,

New Storm Water Retention Berm Construction Specifications
Alchem, Inc., Rockwell, NC
Delta Project No.: 5E0702-101-P
June 8, 2007
4of11
Occupational Safety and Health Administration (OSHA). Hereafter referred to as "29 CFR 1910."
2. OSHA Safety and Health Standards 29 CFR 1926 (Construction Industry), U.S. Dept. of Labor,
OSHA.
3. OSHA Standard 2226 — Excavations. U.S Dept. of Labor, OSHA.
The Contractor shall comply with any rules or regulations pertaining to hazards encountered. At a
minimum, Contractor shall comply with the following:
A. Prepare a Health and Safety Plan (HASP) for normal activities and emergency response,
specifically for this project (see below).
B. Have a designated health and safety officer (HSO).
C. Post conspicuously, appropriate warnings and emergency phone numbers.
The HASP shall address, at a minimum, the following elements:
A. Measures to be taken by Contractor and Subcontractor(s) to control physical and chemical
hazards associated with site construction. Contractor's standard policies may constitute much of
the HASP. Contractor's Health & Safety Officer shall sign and date the HASP.
B. Staff organization, responsibilities, and authorities; site description; hazard analysis for each
project task and operation; personal protective equipment; standard operating procedures and
work practices; communications; illumination; site control measures; emergency equipment and
first aid; emergency response and contingency procedures; and logs, reports and record keeping.
Contractor or Subcontractor(s) shall quickly notify Construction Manager of any unforeseen hazard,
safety issue, or condition they observe during the Work.
The Contractor will conduct a brief daily project briefing and Health and Safety briefing with Construction
Manager and all on -site personnel. During this briefing, the Contractor will identify the number of staff
that will be working on the site during the day and anticipated work activities for the day.
2.7 Utilities
Contractor will confirm the location of all overhead and underground utilities prior to beginning any work.
For work immediately adjacent to a utility, or during excavation that will expose a utility or other buried
obstruction, hand or light equipment excavation shall be used as directed by Construction Manager to
determine its extent. Damages to utility lines or subsurface construction will be reported immediately to

New Storm Water Retention Berm Construction Specifications
Alchem, Inc., Rockwell, NC
Delta Project No.: 5E0702-101-P
June 8, 2007
Page 5 of 11
Construction Manager. Damage to utilities will be repaired by the appropriate utility company immediately at
the Contractor's expense.
2.8 Insurance
Bidder shall submit a general current insurance certificate with their bid. NOTE: The successful bidder
will be required to name Alchem Inc. as additional insured.
1. Bidder shall at its sole expense maintain and, shall ensure that its lower tier Contractors maintain
during the performance of the Work covered by this Contract, carry the following insurance:
a. Worker's Compensation insurance in compliance with the law or laws of the state or states in
which employees are hired or will work, and Employer's Liability Insurance with limits of not
less than $500,000 for each accident or occurrence.
i'
b. Comprehensive Automobile Liability insurance, covering owned, non -owned, or hired
vehicles, including Contractual Liability Insurance to cover liability assumed in Article VII of
this contract, with combined single limit of not less than $1,000,000 per occurrence for bodily
injury and property damage.
c. Commercial General Liability Insurance (occurrence coverage trigger) including products -
completed operations coverage and Contractual Liability insurance to cover liability assumed
in Article VII of this Contract, with combined single limits of not less than $1,000,000 per
occurrence for bodily injury and property damage.
The amount of insurance in compliance with the requirements of 2.16 (1) (a), (b), and (c) above is not to
be construed as either a limitation or satisfaction of the indemnification obligation contained in the
Contract.
2. Contractor shall provide Owner with certificates evidencing the coverage required, including
provision for not less than thirty days' advance written notice to Owner and Engineer of
cancellation or material change. Contractor shall secure from any and all lower tier Contractor's
-- certificates evidencing similar insurance coverage, which shall be provided before Contract
operations begin.
3. All Commercial General Liability, Automobile Liability, and Excess Liability policies shall expressly
include:
a. a provision naming Alchem, its subsidiaries, affiliates and agents and all of their directors,
officers, agents and employees and Contractor's lower tier Contractors which can not satisfy
the requirements under 1 (b) and (c) above, as Additional Insureds;

New Storm Water Retention Berm Construction Specifications
Alchem, Inc., Rockwell, NC
Delta Project No.: 5E0702-101-P
June 8, 2007
Page 6 of 11
b. Severability of Interest clause in favor of the Additional Insured; and
All insurance provided by Contractor and its lower -tier Contractors shall contain a Waiver of Subrogation
endorsement in favor of Alchem, its subsidiaries, affiliates and agents and all of their directors, officers,
agents and employees.
3.0 TEMPORARY DAM CONSTRUCTION/PLACEMENT
3.1 Temporary Berm Construction
All temporary berm construction work will be performed by the Contractor.
Contractor shall construct a temporary berm at the location shown on Figure 3 to retain the storm water
pond during the final berm construction phase. The berm shall be constructed of sufficient height and
width as applicable to the current pond depth at the time of the final berm construction. The temporary
berm shall be constructed of low permeability clay (at least 55% clay particles).
4.0 STORM WATER RETENTION POND
4.1 Storm Water Retention Pond
All storm water retention pond construction work will be performed by the Contractor.
Contractor shall construct a resized and reshaped storm water retention pond as shown on Figures 2 and
5. The storm water retention pond construction grading is shown on Figure 5.
5.0 STORM WATER RETENTION BERM
5.1 Modification of Existing Berm
All storm water retention pond modification work will be performed by the Contractor.
Contractor will modify the existing berm as shown on Figures 1, 2, 3, 4, 5, and 6. The existing berm
material will be excavated, compacted per this specification, and placed per this specification to form a
modified berm section. Existing berm modification work shall include the removal, replacement, and
compaction of all existing berm materials according to these specifications:
• Existing berm material should be excavated and replaced to form a modified existing berm. The
final modified berm should have the dimensions shown on Figures 1, 2, 3, 4, 5, and 6.
0 The final storm water retention berm should be surveyed/staked for construction.

New Storm Water Retention Berm Construction Specifications
Alchem, Inc., Rockwell, NC
Delta Project No.: 5EO702-101-P
June 8, 2007
Page 7 of 11
• The excavated material should be fully compacted in horizontal lifts not more than 15 cm thick
using sheepsfoot rollers, hand compaction, or bulldozers. Each layer should be thoroughly
compacted before the next layer is placed.
• Prior to placement, the material should have an optimum moisture content required for the
purpose of compaction. The typical value of optimum moisture content for clays has been
reported to be between 13% - 21 %. The optimum moisture content, or the water content that
produces the maximum density, may be obtained by a laboratory Proctor test.
• The material used to form the modified berm should be at least 55% clay particles.
• The soil should be placed in lifts not exceeding 15 cm completed to a minimum of 95 percent of
Standard Proctor Value (ASTM: D-698).
5.2 Construction of New Downstream Berm Section
All New downstream berm section work will be performed by the Contractor.
Contractor will construct the new downstream berm section as shown on Figures 1, 2, 3, 4, 5, and 6. The
new downstream berm section material will be placed and compacted per this specification to form a new
downstream berm section. New downstream Berm section work shall include the placement and
compaction of all berm materials according to these specifications:
• The New downstream Berm section should be constructed as shown on Figures 1, 2, 3, 4, 5,
and 6.
• The geosynthetics are to be provided and installed by others.
• The new downstream berm material should be fully compacted in horizontal lifts not more
than 15 cm thick using sheepsfoot rollers, hand compaction, or bulldozers. Each layer should
be thoroughly compacted before the next layer is placed.
• Prior to placement, the material should have an optimum moisture content required for the
purpose of compaction. The typical value of optimum moisture content for clays has been
reported to be between 13% - 21 %. The optimum moisture content, or the water content that
- produces the maximum density, may be obtained by a laboratory Proctor test.
• The material used to form the new downstream berm should be at least 55% clay particles.
• The soil should be placed in lifts not exceeding 15 cm lifts completed to a minimum of 95
percent of Standard Proctor Value (ASTM: D-698).

New Storm Water Retention Berm Construction Specifications
Alchem, Inc., Rockwell, NC
Delta Project No.: 5EO702-101-P
June 8, 2007
Page 8 of 11
5.3 Construction of Berm Geosynthetics Face
All geosynthetics (geomembranes, geonets, geotextiles) work will be performed by others (a separate
contractor). Specifications for the geosynthetics portion of the work are contained in a separate
document.
5.4 Construction of Berm Topsoil Face
All berm topsoil face work will be performed by the Contractor.
The berm topsoil face should have should be constructed as shown on Figures 1, 2, 3, and 4. The topsoil
material should be approximately 2-4 inches in depth and be seeded for grass cover. Geotextile work
related to the Berm topsoil face shall be provided and installed by others.
5.5 Construction of Berm Toe Filter
All berm toe filter work will be performed by the Contractor.
Contractor shall construct a berm toe filter at the location shown on Figures 3 and 4. The toe filter shall
be constructed of high permeability material such as sand.
5.6 Cutoff Trench with Underdrain
All cutoff trench with underdrain work will be performed by the Contractor.
Contractor will construct the cut-off trench with underdrain as shown on Figures 2, 3, and 4. The cut-off
trench will be excavated and constructed to collect any drainage from the downstream face of the new
storm water retention berm. The Cut-off trench with underdrain work shall include the placement of all cut-
off trench materials according to these specifications:
• The cut-off trench section should be constructed as shown on Figures 2, 3, and 4. The
geosynthetics are to be provided and installed by others.
• The cut-off trench material shall include graded gravel or crushed rock immediately
surrounding the perforated underdrain.
• The graded gravel/crushed rock shall be surrounded by sand/gravel.
• The underdrain shall be a 3—inch diameter, perforated pvc pipe set at 1 % slope toward the
collection sump pump.
• The cut-off trench shall be of sufficient width to provide ample room for the handling of piping
runs.

New Storm Water Retention Berm Construction Specifications
Alchem, Inc., Rockwell, NC
Delta Project No.: 5E0702-101-P
June 8, 2007
Page 9 of 11
• Contractor shall accurately grade the trench bottom to avoid low points.
• No more of the trench than necessary shall be left open at any time during trench
construction. Open trenches shall be properly marked and/or attended, and barricaded.
Trenches shall be closed and barricaded at the end of each working day.
• A minimum of 3 inches of washed sand shall be used as piping bedding below the piping.
• The soil should be placed in lifts not exceeding 6 inch lifts completed to a minimum of 95
percent of Standard Proctor Value (ASTM: D-698).
5.7 Inspections
In the event any inspections indicate the work has not been performed as specified or the materials have
not been furnished, placed and compacted in compliance with the specifications, the work shall be
redone, the materials removed, replaced, and recompacted until the inspections assure compliance with
the drawings and specifications.
5.8 Site Restoration
Following completion of the installations, the Contractor shall restore all affected surfaces to their original
condition, including the reseeding of all grass areas.
6.0 MECHANICAL WORK
The scope of mechanical work to complete the installation includes the following:
• All piping and mechanical work required to construct a cut-off trench transfer sump pump and
storm water retention pond pump system.
6.1 Cut-off Trench Transfer Sump and Sump Pump
The scope of work includes the installation of a cut-off trench transfer sump and sump pump to transfer
any collected water from the cut-off trench to the storm water retention pond.
The sump pump and sump will be provided by the Contractor. A pre -packaged sump pump system such
as Model PJM-PKG-1824 as manufactured by Jim Murray, Inc., or equivalent shall be provided for this
purpose. The sump pump system shall include appropriate level alarms to control pump operation during
high and low water conditions. A check valve followed by a plug or gate valve should be installed on the
discharge side of the pump. Electrical conduit for electrical wire shall consist of U.L. approved PVC
electrical conduit, fittings, and connections. All buried conduit shall be rigid and approved for earthen
burial. Contractor shall employ a placement method that does not disturb nor damage installed piping.
The cut-off trench transfer sump pump shall discharge to the storm water retention pond as shown on

New Storm Water Retention Berm Construction Specifications
Alchem, Inc., Rockwell, NC
Delta Project No.: 5E0702-101-P
June 8, 2007
Page 10 of 11
Figure 2. The sump pump discharge pipe shall be 3-inch diameter PVC. Contractor shall employ a
placement method that does not disturb nor damage installed piping. The trench shall be of sufficient
width to provide ample room for the handling of piping runs. Contractor shall accurately grade the trench
bottom to avoid low points. No more of the trench than necessary shall be left open at any time during
trench construction. Open trenches shall be properly marked and/or attended, and barricaded. Trenches
shall be closed and barricaded at the end of each working day. A minimum of 3 inches of crushed stone
shall be used as piping bedding below the piping. A minimum of 1 foot of cover soil should be placed
over the culvert. The cover soil should be placed in lifts not exceeding 6 inch lifts completed to a
minimum of 95 percent of Standard Proctor Value (ASTM: D-698).
6.2 Storm Water Retention Pond Pump System
The scope of work includes the installation of a Storm Water Retention Pond Pump system to transfer
water from the storm water retention pond to Lagoon #2.
The storm water retention pond pump system will be provided by the Contractor. A pre -packaged sump
pump system such as Model ZJM-SPLX-Delta as manufactured by Jim Murray, Inc., or equivalent, shall
be provided for this purpose. The pump system shall include appropriate level alarms to control pump
operation during high and low water conditions. A check valve followed by a plug or gate valve should
be installed on the discharge side of the pump. Electrical conduit for electrical wire shall consist of U.L.
approved PVC electrical conduit, fittings, and connections. All buried conduit shall be rigid and approved
for earthen burial. Contractor shall employ a placement method that does not disturb nor damage
installed piping.
7.0 ELECTRICAL WORK
All electrical work will be performed by the Owner.
8.0 DOCUMENTATION
The contractor will provide a daily safety meeting log and a daily quality control report. The daily safety
meeting log must include the topics covered and the signatures of all personnel present at the meeting.
The daily quality control report must include any on -site personnel and equipment, what work was
accomplished, and any problems identified with solutions.

New Storm Water Retention Berm Construction Specifications
Alchem, Inc., Rockwell, NC
Delta Project No.: 5E0702-101-P
June 8, 2007
Page 11 of 11
9.0 REMARKS
The recommendations contained in this bid package represent Delta's professional opinions based upon
currently available information and are arrived at in accordance with currently acceptable professional
standards. This report is based upon a specific scope of work requested by the Owner. The contract
between Delta and the Owner outlines the scope of work, and only those tasks specifically authorized by
that contract or outlined in this bid package were performed. This bid package is intended only for the
use of the Owner and anyone else specifically listed on this report. Delta will not and cannot be liable for
unauthorized reliance by any other third party. Other than as contained in this paragraph, Delta makes
no express or implied warranty as to the contents of this report.
This bid package was prepared by DELTA ENVIRONMENTAL CONSULTANTS, INC.
Brian Quillia, PE.
Project Engineer
f
Gary C. Ribblett, P.E.
Project Manager
Date: 06/08/07
Date: 06/08/07
SM t
�CJOETtMOq•I9v1h�
0/o e/ 7

FIGURES

STREAM ,-;1
SUMP PUMP FOR
LIQUIDTRANSFER
ROAD
MODIFIED ROAD
TO
DOWNSTREAM
BERM FACE
TRANSFER PIPING
TO POND
MODIFIED
LAGOON #1
BERM POND
TEMPOARY BERM
LAGOON #2
Bd
Q
DURING MODIFIED
BERM CONSTRUCTION
0 OFFICE
FILL AREA
POND SUMP
LAGOON #3
PRODUCTION
AREA
PUMP SYSTEM
TO LAGOON #2
PER FIGURE 5)
`
RED ROAD
FIGURE 2
SITE MAP WITH
MODIFIED BERM
ALCHEM, INC
8135 RED ROAD
ROCKWELL, NORTH CAROLINA
PROJECT NO. IPREPARED BY IDRAWN BY
5EO702101P I MTG

5.0'
COMPACTED ADDITIONAL
MATERIAL FOR
DOWNSTREAM FACE
TOP SOIL &
SS
GRASS COVER WITH
GEOTEXTLE SUPPORT
SS
GEOMEMBRANE -
SS
GEONET -
SS GEOMEMBRANE LAYER
o^
RESHAPED
SEE FIGURE 6
SS SS A'
EXISTING
BERM
A
y 2
SEE
SS
SS ' ..� 1
SECIFICATIONS
CV
2
SS
SS
GEOTEXTILE/GEOGRID -�
FOR STRUCTURAL
APPLICATION IN SUPPORT
OF ADDED MATERIAL
CUT-OFF TRENCH
WITH UNDERDRAIN
TOE FILTER
TO SUMP PUMP
(SAND)
(SEE FIGURE 4)
FIGURE 3
BERM MODIFICATIONS
CROSS SECTION
ALCHEM. INC
8135 RED ROAD
ROCKWELL. NORTH CAROLINA
PROJECT NO.
PREPARED BY DRAWN BY
5EO702101P
MTG
DATE REVIEWED BY FILE NAME \
05/29/07 FIGURE 3 E LTA

TOE FILTER GEONET
(SAND)
NEW GEOMEMBRANE
TOPSOIL WITH GRASS
RESHAPED
EXISTING
BERM/DAM
x x x x x x
x o x x
x
x x
x x
x x o
x x
x x x x x
GEOMEMBRANE 1:1
SAND & GRAVEL
GRADED GRAVEL PERFORATED UNDERDRAIN
OR CRUSHED ROCK SET AT 1% SLOPE TOWARDS
3.0, SUMP PUMP
FIGURE 4
DOWNSTREAM BERM
FACE DETAIL
ALCHEM, INC
8135 RED ROAD
ROCKWELL, NORTH CAROLINA
PROJECT NO. PREPARED BY DRAWN BY
5EO702101P MTG
DATE REVIEWED BY FILE NAME
05/18/07 FIGURE 4 ® E LTA

GEONET
GEOMEMBRANE
X X X X X X X X x'x X X X
GEOMEMBRANE
SEE SPECIFICATIONS
FIGURE 6
GEOMEMBRANE - GEONET -
GEOMEMBRANE LAYER CROSS SECTION A -A'
ALCHEM, INC
8135 RED ROAD
ROCKWELL, NORTH CAROLINA
PROJECT NO. PREPARED BY DRAWN BY
5EO7O2101P MTG
DATE REVIEWED BY FILE NAME
05/18/07 FIGURE 6 ®E LTA

APPENDICES

APPENDIX A
Terms and Conditions of Contract

CONTRACTOR'S FINAL RELEASE AND WAIVER OF CLAIMS
Purchase Order
CONTRACTOR'S FINAL RELEASE
AND WAIVER OF CLAIMS
KNOW ALL PERSONS BY THESE PRESENTS,
that
--a corporation organized under the laws of the State
of
--a partnership
of
--a sole proprietor.
in consideration of the sum
of
lawful money of the United States, and other goods and valuable consideration, does hereby release and
discharge Delta Environmental Consultants, Inc. (Delta) of and from all debts, demands, claims and
charges and from any and all rights and liens which it now has or may have by reason of the work,
services, equipment and materials performed or furnished pursuant to its Purchase Order and/or Contract
dated with Delta and any amendments and change orders thereto (hereinafter collectively
referred to as "the Contract"); and
Hereby represents that all work to be performed pursuant to the Contract has been completed, that it has
paid and discharged all materialmen and others for all work, labor, services and material of whatsoever
nature furnished to it in connection with the Contract; that there are no claims and no liens against the
property to which the Contract applies by any of its Suppliers or persons furnishing labor or services to it
in connection with the Contract; and
Hereby agrees to promptly pay and release of record all mechanic's, materialman's and like liens filed by
others in connection with work covered by the Contract which may in the future affect the property to
which the Contract applies; and
Hereby agrees to defend, indemnify, and save Delta, its officers, directors, employees and agents
harmless from any liability or expense because of any such claims or liens, or the enforcement thereof.
IN WITNESS WHEREOF, the said
has caused
--its corporation seal to by hereunder affixed and these presents to be signed by its duly authorized
officer
--these presents to be signed by a duly authorized partner
--these presents to be signed
the
day of , 20_
Corporate Partnership or Proprietorship's Name)
By (Signature and Title of Authorized Officer) OR
(Signature of Authorized Partner) or (Signature of Proprietor)

STATE OF
SS:
COUNTY OF )
On the day of 20_, before me came
to me known, who being by me duly sworn, did depose and say that he/she resides
that he/she is
--the of the corporation described in, and which executed the foregoing
instrument that he/she knows the corporate seal; that it was so affixed by order of the board of directors
of said corporation, and that he/she signed his/her name thereto by like order.
--a of the partnership described in and which executed the foregoing
instrument; and that he/she signed his/her name thereto per authority of said partnership.
--a sole proprietor, and that he/she executed the forgoing instrument.
My Commission Expires
Notary Public
C-3301 (2/00)