quality plan for remedial activities for club ranch ponds

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REV. NO.

u 1

QUALITY PLAN NO. QP-428-1 PROJECT NOS. 428

QUALITY PLAN

FOR

REMEDIAL ACTIVITIES

FOR

LLUB RANCH PONDS AREA

(NEW EVAPORATILJN PONDS}

FOR

UMETCO MINERALS CORPORATION URAVAN MILL

URAVAN, COLORADO

PREPARED BY CHEN AHO ASSOCIATES, INC.

DENVER, COLORADO

DATE OF ISSUE PURPOSE OF ISSUE

3/19/87 For Submittal to State-~#~~~ l/18/88 For Construction

State Approval ~CfY\JJ iJ. S '~" Date ________ __,~*~r4Z, ...... ~..,../~ ... 7,__ _______ _

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QUALITY PLAN NO. QP-428-1 PROJECT NO. 428

INDEX

PART I GENERAL

1.0

2.0

3.0

SCOPE OF QUALITY PLAN .

LIST OF QUALITY CONTROL PROCEDURES.

COMPLIANCE REPORTS ...

. . . . .. .. ..

. . . . ~

PART II QUALITY CONTROL/QUALITY ASSURANCE

1.0 SCOPE OF QUALITY CONTROL/QUALITY ASSURANCE. . . 2. 0 QUALITY CONTROL

2. l

2.2

2.3

Personnel. . . . . . . . . . Surface Runoff Control Facilities .

2. 2 . l

2.2.2

2. 2. 3

General . . . . . . . . . Ditch 6 ••.

Compliance Report ..

. •· . . . . . . . .

Site Preparation ...•

2.3.1 Demolition . . . . . . . .

2.3.2

2.3.3

2. 3. 4

2.3.5

Site Survey.

Clearing, Grubbing and Stripping .

Disposition of Materials .

Compliance Report ....•

. . . . . .

. . . . . .

Page No.

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2

3

4

5

5

5

5

6

6

7

7

7

8

8

8

3.0

2.4

2.6

QUALITY PLAN NO. QP-428-1 PROJECT HO. 428

Earthwork ..•. . .. . . . . 2. 4. l

2.4.2

2.4.3

2.4.4

2.4.5

Excavation .

Preparation of Foundation ..

Materials ...

Placement and Compaction .

Moisture and Density Control

8

9

9

10

10

12

l.4.6 Frequency of Quality Control Tests .. 12

2. 4. 7 Compliance Report.

Leak Detection System ...

13

1 4

Z.5.1 Construction of Leak Detection System. 14

l.t,.2 Compliance Report •. . . . . Synthetic Liner •.

2.6.l Liner Quality.

2.6.2 Field Seams •. •

. . . . . . . .

. . . . . . . . 2.6.2. l

2.6.2.2

Destructive Tests. . . . . . . Nondestructive Tests . .

2. 6. 3 Repairs ....••

2.6.4 Quality Control Report •••

2.6.5 Compliance Report •..••

2.7 Documentation of Quality Control

QUALITY ASSURANCE . . . . . 3 • 1 Personnel ...

QA Activities •.

Documentation .

. . . . . . .

ADDENDUM TO QUALITY PLANS • .

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15

15

16

16

1 7

18

18

18

18

l 9

19

1 9

19

20

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PART I GENERAL

1 .0 SCOPE OF QUALITY PLAN

QUALITY PLAN NO. QP-428-1 PROJECT NO. 428 PART I Page 1

The Quality Plan presented herein covers the design and con

struction of the New Evaporation Ponds as described in the Final

Plans and Specifications for Remeaial Activities for Club Ranch

Panas Area (l~ew Evaporation Ponds), Specification No. S-428-1,

hereinafter referred to as the Specifications.

The ~uality Plan meets the applicable requirements set forth

in Section 4.l.5 Quality Control/Quality Assurance, Monitoring

Performance Evaluation and Inspection, and in Section A4.2 Club

Ranch Ponds Area in Addendum A of the Uravan Remedial Action Plan

( RAP ) .

The Quality Plan consists of Quality Control/Quality Assur

ance (QC/QA) for the construction of the New Evaporation Ponds.

Monitoring and Performance Evaluation for the New Evaporation

Ponds will be included in the Quality Plan for Remedial Activ

ities for Club Ranch Ponds Area, Quality Plan No. QP-401-1 which

will be submittea at a later date.

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QUALITY PLAN NO. QP-428-1 PROJECT NO. 428 PART I Page 2

Z.0 LlST uF QUALITY CONTROL PROCEDURES

The following Quality Control Procedures are attached and

are made a part of the Quality Plan.

Procedure No.

QC-1

QC-2

QC-4

QC-5

QC-6

QC-7

QC-9

(JC-10

QC-11

QC-19

QC-21

Rev. No.

1

1

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0

u

0

0

0

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Procedure

In-Place Density Tests

Laboratory Standard Compaction Test

Soil Classification for Engineering Purposes

Soils Finer than No. 200 Sieve

Particle Size Analysis

Moisture Content of Soils

Sampling of Aggregates and Soils

Observation of Excavation

Observation of Fill Placement

HOPE Liner Seam Integrity

Gamma Survey using Scintillometers

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~.U GOMPLIANCE REPORTS

QUALITY PLAN NO. QP-428-1 P R OJ EC T N O • 4 2 8 PART I Page 3

Lompl ;ance Reports shall be prepared by the Quality Control

Officer, for written approval by the Site Manager , and the

on-Site Coordinator (OSC) where noted in the following sections.

Compliance Reports shall be prepared for the following:

Report No.

CR-428-1

CR-428-2

CR-428-3

CR-428-4

CR-4l8-5

Work Items

Construction of Ditch 6

Site Preparation

Earthwork for Pond Construction

Construction of the Leak Detection System

Installation of the synthetic Liners

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QUALITY PLAN NO. QP-428-1 P R OJ EC T N O . 4 2 8 PART II Page 4

PART II ~UALITY CONTROL/QUALITY ASSURANCE

1 .O SCOPE OF QUALITY CONTROL/QUALITY ASSURANCE

QC/QA shall be providea for the following:

(1) Construction of Surface Runoff Control Facilities.

(l) Site preparation including demolition, scintillometer sur

vey, clearing, grubbing and stripping.

(3) Earthwork including excavation, preparation of foundations,

and construction of the embankments and Clayey Base.

(4) Lonstruction of the Leak Detection System.

(b) Installation of the synthetic Liners.

(b) Installation of temporary environmental control measures.

(7) Submission of Documents.

t.O UUALITY CONTROL

Z.l Personnel

QUALITY PLAN NO. QP-428-1 PROJECT NO. 428 PART II Page 5

The Quality Control Officer or his designated representative

( hereinafter referred to as the QC Officer) shall verify that the

Work is constructed in accordance with the Specifications as

approved by the State. The key items for Quality Control are

listed in the following sections. Approval of the construction

covered in each of the following sections shall be documented in

Q writing by the QC Officer in accordance with the Quality Control

Procedures listed in this Quality Plan.

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l.2 Surface Runoff Control Facilities

l.l.l General

The QC Officer shall verify that the area outside the con

struction limits is environmentally protected in accordance with

Part I Section 4.3 of the Specifications.

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l . l . 2 Ditch 6


The QC Officer shall verify the following :

t l) Ditch bis constructed at the location and to the construc

tion details shown on Drawing No . P-428-1 . If modifications

of the ditch alignment are required by site conditions, such

realignment is approved by the Site Manager or his desig

nated representative with tne agreement of the OSC .

(2) Cross-sections and grades of the ditch are checked for con

formance with the Specifications . Documentation of the mea

surements and surveys shall be reviewed by the QC Officer.

The following Quality Control Procedures shall be used:

Procedure

Observation of Excavation

Observation of Fill Placement

l . l . 3 Compliance Report

Procedure No.

QC-10

QC-11

A Compliance Report shall be prepared for the construction

of Ditch 6.

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2.3

Z. 3 • 1

Site Preparation

Demolition


The QC Officer shall verify the following:

ll) The swimming pool and associated facilities are demolished

and/or removed.

(l) The propane tanks are removed and disposed of off-site.

( J) A 11 aebri s and other deleterious materi a 1 s are removed from

the construction site.

2.3.2 Site Survey


( l) The sci nti 11 ometer survey is performed to verify that the

soils underlying the New Evaporation Ponds have exposure

rates of 30 uR/hr {corrected/true) or below. Quality Con

tr o 1 Procedure QC - 21 sh a 11 be used .

{l) Tne results of the Scintillometer Survey is documented.

This documentation shall be reviewed and approved by the QC

Officer.

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l.3.3 Clearing, Grubbing and Stripping


The QC Officer shall verify that clearing, grubbing and

stripping of the area for the Hew Evaporation Ponds is performed

in accorrtance with the Specifications. Quality Control Procedure

~C-10 snall be usea.

i.3.4 Disposition of Materi al s

The QC Officer shall verify that the materials from demoli

tion. clearing, grubbing and stripping are separated into

scrap/rubble and combustible matter and are stockpiled or dis

posed of as determined by the Site Manager or his designated

representative.

l.3.b Compliance Report

A Compliance Report shall be prepared f or the Site Prepara-

tion.

~.4 Earthwork

The QC Officer will take soil samples and perform moisture-

() density tests, graaations and other tests to ascertain that the

0 QUALITY PLAN NO. QP-428-1 PROJECT UO. 428 PART II Page 9

work is being performed in compliance with the Specifications.

Samples may l.Je taken at the place of excavation, stockpiles, or

on tne fill itself. The (JC Officer will conduct the density and

other tests on the materials and related laboratory testing as

frequently as aeemed necessary, but in no case less frequently

than stated in the Specifications.

l.4.l Excavation

The QC Officer shall verify that the excavation for the New

Q Evaporation Ponds ana Leak Detection System are made to the

lines, grades and dimensions shown on Drawing Uo. P-428-1 and

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~-4£~-2 ana described in the Specifications. The excavation

shall be observed during construction in accordance with Quality

Control Procedure Q!,;-lCJ. Documentation of the measurements and

surveys snall be reviewed by the QC Officer.

l.4.2 Preparation of Foundation

The QC Officer shall verify that the foundation areas for

the pond embankments ana Clayey Base are prepared in accordance

with the Specifications. Foundation preparation shall be

observea during construction in accordance with Quality Control

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Proceaure !Jo. QC-10. The foundations shall be approved by the QC

Officer prior to placement of embankment materials or the Clayey

Base.

2.4.3 Materia ls

Materials for construction of the earthfi 11 embankments and

Llayey Base consist of materials excavated from the construction

area or materials imported from the approved borrow areas. These

soil materials shall be approved by the QC Officer. The follow

ing (Juality Control Procedures shall be used to evaluate borrow

materials:

Procedure

Soil Classification for Engineering

Purposes

Soils Finer than No. 200 Sieve

Particle Size Analysis

Noisture Content of Soils

Sampling of Aggregates and Soils

2.4.4 Placement and Compaction

P r o c e du re !Jo •

QC-4

QC-5

QC-6

QC-7

QC-9


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( 1) Placement of earthfi 11 for the pond subbase and embankments

and for the C 1 ayey Base is done in accordance with the

Specifications.

(2) The placement of materials meet the following requirements:

{a) The correct type of material is placed.

(b) The material being placed is free of unsuitable mater

; a 1.

(c) The material is placed to the lines and grades desig

nated in the Specifications and on the Drawings.

Factors including materials uniformity, lift thickness, com

pactive effort and load counts of materials placed, shall be

noted . Qua 1 i ty Cont r o 1 test i n g sh a 1 1 be conducted i n accordance

witn tne following 4uality Control Procedures.

Procedure

(1) In-Place Density Tests

(l) Laboratory Standard Compaction

Test

(3) Soil Classification for

Engineering Purposes

(4) Soils Finer than No. 200 Sieve

(5) Particle Size Analysis

(6) Moisture Content of Soils

(7) Sampling of Aggregates and Soils

(8) Observation of Fill Placement

Procedure No.

QC-1

QC-2

QC-4

QC-5

QC-6

QC-7

QC-9

QC-11

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t.4 . b Moisture and Density Control

QUALITY PLAN NO. QP-428-l PROJECT NO. 428 PART II Page 12

The QC Officer shall verify that the moisture content and

density of the compacted materials are in accordance with the

Specifications and that necessary reworking is performed as

required . The Quality Control Procedures are listed in Section

'-. 4 • 4 •

Z .4 . 6 Frequency of Quality Control Tests

The frequency of the Quality Control Tests for earthwork

shall be as follows:

( 1) The frequency of the field density and moisture tests shall

be not less than one test for each 500 cubic yards of placed

fill material (earthfill or clayey base).

(Z) There shall be at least one field density and moisture test

for each lift of fill material placed and compacted .

(J} Gradations and Atterberg limits {Classification for Engi

neering Purposes) of compacted fill materials shall be per

formed at a frequency of not less than each 1,000 cubic

yards of placed Clayey Base or each 5,000 cubic yards of

compactea earthtill.

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(4 ) For fill materials where moisture content tests are corre

lated with optimum moisture content as determined by the

Standard Compaction Tests, frequency of moisture content

tests of compacted fill material shall not be less than one

test for each 500 cubic yards of compacted fill material.

( ~) For fill materials where field density tests of compacted

fill material are correlated with laboratory maximum density

as determined by the Standard Compaction Test, frequency of

field density testing for compacted fill material shall not

be less than one test for each 500 cubic yards of compacted

fill materials.

(6} Frequency of raboratory standard Proctor compaction tests

snall be such that maximum densities are determined for the

range of materials being placed in the fill; however, fre

quency of compaction tests shall not be less than one test

for each 5,000 cubic yards of compacted fill material.

2.4 . 7 Compliance Report

A Compliance Report shall be prepared for the earthwork.

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i.b Leak Detection System


L.5.1 Construction of Leak Detection System


(1) The leak detection drains are constructed in accordance with

tne Specifications and the details shown on Drawing Nos.

P-428-1 and P-428-Z. Excavation of the drainage trenches

snall be surveyea for grade. Documentation of the surveying

shall be reviewed by the QC Officer.

\l) Manufacturer's items including the drain pipe and sump pipe

are as specified.

(3) Placement of the drain materials shall be monitored to

ensure the following requirements are being met:

(a) The correct type of material with the specified grada

tion is being placed

(b) The material being placed is clean and free of unsuit

able material.

(c) The material is being loaded, transported and placed

in a manner which minimizes segregation.

(a) The material is being placed to lines and grades

designated in the Specifications and on the Drawings.

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Quality lontrol Procedures to be used are l i s t ed below:

Procedure

(1) Particle Size Analysis

(2) Sampling of Aggregates and Soils

(3) Observation of Fill Placement

l . 5. 2 Compliance Report

Procedure Uo.

QC-6

QC-9

QC-11

A Compliance Report shall be prepared for the construction

of the Leak Detection System.

~.b Synthetic Liner

2.u.l Liner Quality


(1) The synthetic Liners are manufactured of new, first quality

products designed and manufactured specifically for the pur

pose of liquid containment.

(2) The liner materials are free of holes, blisters, undispersed

raw materials, or contamination by foreign matter. Any such

de f e c t s h a 11 be rep a i re d u s i n g th e e x t r u d a t e \'I e 1 d i n g t e c h

n i q u e in accordance with the manufacturer's recommendations.

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(J ) Certification from the Liner manufacturer documenting that

the Liner meets all the physical property specifications for

tile intendea application has been received and approved.

~.6.2 Field Seams

The QC Officer shall verify the following :

~. 6.l.l Uestructive Tests

(1) Field Fabricated Startup Seam - Seller provides a represent

ative seam fabricated from the same sheet material and using

the same seaming methods as those recommended by the synthe

tic Liner manufacturer . The startup seam is no less than 10

feet (3 m) in length and is provided at the start of each

day's or shift's seaming . Random samples for shear and peel

testing are cut from the startup seam. The startup seam is

allowed to cure or age properly before testing in accordance

with manufacturer's directions .

(l) Field t.ut Out - A minimum of one 2-foot (0.61 m) long sec

tion of the fabricated seam per 500 feet of seam is cut from

the installe<l lining. The cutout section is wide enough to

accommodate peel and shear testing. Random specimens for

peel a n<l shear testing are cut from the

QUALITY PLAN NO. QP-428-1 PROJECT UO. 428 PART II Page 17

samp1e. The resulting hole is patched with an oval-shaped

piece of sheet material and is seamed in accordance with the

manufacturer's instructions. The cutout seam is allowed to

cure or age properly before testing in accordance with the

manufacturer 1 s recommendations.

(3) The integrity of the field seams is determined in accordance

with Qua1ity Control Procedure QC-19.

(4) The location of the seams, the machine used, the operator,

weather conditions and any problems are logged on a daily

basis.

l.b.,.l Nondestructive Tests

A Quality Control Technician employed by Seller inspects all

field seams visually. In addition, the follow i ng test method is

employed for the pond Liners.

Vacuum Box Testing All field seams are inspected for

unbonded areas by applying a vacuum to a soaped section of seam.

This nondestructive test is performed in accordance with Quality

Control Procedure QC-19.

l.b.3 Repairs


All defective field seams as detected by both destructive

and nonoestructive tests are marked and repaired in accordance

with manufacturer's recommendations.

l.6.4 Quality Control Report

Seller prepares a report of the Quality Control testing pro

gram and submits it to Owner for review and approval prior to

acceptance of the installed Liners.

2.b.~ Lompliance Report

A Compliance Report shall be prepared for the installation

of the synthetic Liner.

~.7 Documentation of Quality Control

Written records shall be maintained for each construction

day covering the subject remedial activities. The written

records and reports shall be in accordance with the respective QC

Procedures and shall include results of all tests conducted. The

originals of all documents shall be maintained in the Uravan Pro

Ject Files.

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3.0 4UALiTY ASSURANCE

.J.1 Personnel


(Jual i ty Assurance consisting of audits and cross checks on

the Qua 1 i ty l.ontrol functions, shal 1 be provided by the Qua 1 i ty

Assurance Officer or his designated representative {hereinafter

referred to as the ijA Officer).

3.2 QA Activities

The QA Officer shall implement the program by performing the

following functions:

(1) Prequalify QC Personnel

(l) QC Technician training

(3) Verification of effectiveness of QC Personnel

(4) Verification of test procedures and results by spot retest

(5) Equipment checks

{b) Review of calculations and documentation.

3.3 ~ocumentation

Each QA Activity shall be documented in writing and shall be

Q kept in the Uravan Project Files.