## APPENDIX A LANDFILL CAPACITY CALCULATION WORKSHEET

BRYAN A. STIRRAT & ASSOCIATES1) Remaining Capacity Picacho Cut and Fill Site Capacity Calculation Proposed Final Grading Plan (using 2006 Topo) Remaining Capacity as of 7/12/06 77,055 cubic yards (cy) (Including Final Cover Quantities) 2) Refuse (Inflow Rate) received from July 12, 2006 through December 31, 2008 Information provided by County of Imperial Department of Public Works Year 7/12/06 through 12/31/08 Total Tonnage 3) Conversion of tons received (Item 2) to cy - Assume in-place density of 1,000 lbs per cy
- 2,000 lbs per ton Calculation for conversion: 2,000 divided by 1000

1,839 tons 

### x 2 (conversion rate for tons to cy) Tons Received 1,839 1,839 3,678 cy were received from 3/24/06 through 8/31/07 (in-place) 4) Daily and Intermediate Cover Used (5:1 ratio) 5:1 ratio 1 div. by 5 =

3,678 X 0.2 0.2 736 cy 2 3,678 cy 5) Total air space consumed (refuse and daily and intermediate cover in cubic yards) from 7/12/06 through 12/31/08 3,678 + 736 = 4,414 cy 6) Remaining Capacity as of January 1, 2009 77,055 4,414 = 72,642 cy 7) Remaining Net Capacity (Remaining Capacity less Final Cover Volume= Remaining Net Capacity) See "Volumes" shown on Site Life Projection table. Total Final Cover Volume (Foundation layer and Monolithic layer) 72,697 cy (rem capacity)- 70,583 cy (final cover volume)= 70,583 cy 2,059 cy as of 1/1/2009
):\Imperial County\2006.0095 Picacho FCPCMP Rev\Reports\FEB2009 Revisions\Site Calcs_Appdx A; 2/20/2009

## APPENDIX 8 WELL CONSTRUCTION LOGS

BRYAN A. STIRRAT & ASSOCIATES

# DRAFT

. 9Z IB 

### [-10 ll3 

### ta 

### r-15 110 111 

### -20 10 12 88 12 

## -30 87 18 

### r-35 77 IS 99 18 

### -45 IB 12



### ~ 

### 5- 

# · ..

## ·.· 

## ... ,•.•. 

# . :: . 11



### ~ 

## IG9



## ~ 15- 12

**~** 

## 20- 12 

## rsJ 25- 

## ... .

# ·.·. • · ·.·. ·. ·.· .·.·.

.. . 16



### ~ 

## 30- .. 15



### ~ 

## 35-

..

## ·.· . 14 Top of Ca;ng Elcw. JJ!,l!Z fl IA1. datum Coordinate. DrDI 

### oate:Start 

## emn• 0f01 Method 01£. 75Jlig!!!I!=Stem AuQI!OI 8=fnd! op Crillcr 

### Wost Hcgmot)Dqw UcmxN
- IAqged lly **...;5,illo-I:Itm~a~uumilllm** _______ _ RII!Mewed by -4 l!g tldl 

## '=::

**pmlonli~,Uy ~**  cyain-.1 1-iiCII tn'ICII c..,ent.ad C<Jn9lomerolc: leu calor beCQ!IIQ wry pal8

**cr~X~Qe** (1om 11/'-); I1IObl. toler bccar!lc:.

**pili~ ~**  Ill'-. (10YR

**6/~)**

### r-50 

# f-55 f-


# . 

# H>o E:HVIRON 1.5 87 16 

# BR.AFT 00 18 15



### ~50-



## ~55- 

## .. . . ·.·.

·.·.· bccama IIG</1U1 ceflaM to '-; cnoW 

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## a..,. laminO<I 16 ISl 

## 60....-.:....:· ''"""

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## ot 4

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**J.~** 12/J(J[o.t lmpmal County, Cclifomla 

### P-MW- 1

# 8-22

## -70 -75

**~** 

### -80

·-B5 

### ...go f-100

### r

## H05r1-' 

# DRAFT

16 86 15 SJ 1:1 111 92 7S 12 98 15

. 89 85 IS 15

**~** 

### 65- 16

**~** 

## 70-
16



### ~ 

### 80-
12 

# rsl 90- 15 

## ... 

# . •.•

## . 

# .. . 

# . . .. .

# . . . .



# . ;.:·: 18 

# . : : 

# : 

# .

**~100-** 

# .. ' l::l

**~105-** 

# . :-:-: Top of Coain9 Eln. J.lQ 82 fl 

### M1 S dohcn CoordL1ate:r OriO Date:Start 8!)1J94 Orll MethQd

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qrad" with flllri4d

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c;,ndes to a hadv waalh1n:d

**do~r** $41. tolor beaxnes vtry pac

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### 10 96 16 

# .. . .. . .



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### 11 

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## . . 

# .. . 

# oRAfT 20 ll2 14 

# E:HVIROH . l'rJ.ge 2 

### 0/ " RWRt LOG lF BORNi Nil llfll. OlfS'1RUC1I(]N

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### County, Callfomfo 

### P-MW-1 

# B-22

# DRAFT

ltl 

# " r-130 00 15 15 

## -135 0.0 10 0.0 00 IS 15 

## -145 0.0 10 10 

### -150 0.0 18 10 

## r-1'55 0.0 10 liS 

# Hso 18 0 

### r-165 0.0 18 18 

### ~ 125- 

# . ·.· . 

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**~** t5o-



## ~ 155-

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### 165- 

# .. ·.·.· ...



# ·.·.·
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# \

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# ,C)-\ ,/--··.. h. damp at 150 

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oli!JhUy obnp dl U14.S IL 'f'ada with -....
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**II'Gq~Untl,** 

### rnaxnum !ll"MM .. 1.5 

## mc::o

## . . iub'IIICJUI«**~lhlc lt~ts.**  rnGXi1lum I,IRMI .. 1.5 ndn::; 

### 170 88 IG '. 

## ... ll"ebnivallr Clllr!lt'"IJ"ained Stlld !Iilii Clllprox!rnaleiY**I~** :wbnlundcd to :Manqulvr CJRI"* 

## . . 

# . ' 175 G7 . liS 11!1

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### . . . 

## . . . 

## . . 180 90 16 14 

### 1918 

# oRA.fl Page 

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# P-MW~1 

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## -195 '-200 . 1-



# - '-

210 -220 -225 

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# l ..



# 1

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05 1G Ill liS 95 14 100 10 I S

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## .xJ\ ' /1 ' _ t_., • . c:.. \ .. ..

I • 16 16 I!I 14 10 I ll 

## .. 

# . . . . 

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## ... Top 

### of C4sinq Elev. ng-DZ 

### n. MSl. dgtvm Coord'mates Dr1B Date:Start 0122/94 flnlsh §/2-4/9-4 Orfll Uathod OdE 75/Ho!!ort=Stan Auoca tHnd\ 

## co DrDier West Hm!d/Qove Ucmedl!

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**1~200** ft.



### ~200- 

### tSI205-



## . ...

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## 21~ **·-·~-L--- --**  **a** __



## c~ **~~ --** **Wd** __



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# . 220- 

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### rr1es are 

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## pcranu..,.___\}.\("'_\... \.- NONT<RNciNOTESI - 

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### - 

# . -230 I 

## 230- 1- 

### t-235 

# nst-240 2-ID

# ott~ft neuta: 

# €NV IRON f'age 4 of <f LOG OF SORI'(G N«J 'M1L COHS'IRVC1tON Of:T.Ail.S 

# 8-22

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### P-MW-1 Job f(0.03-4<RI4A Apom'll!d: 1Z/3>.11' Imperial County. Calltomlo

# DRAFT f-10 6 0 

### -15 0 

## -20 !10 16 

### a 

### -25 100 J 3 

## t-30 t-35 

# l-45 0.0 IB 17 **~** 

## 1QISJ 

### 15-

**~** 

## 20- ISJ 

### 25-

### jQ**35~** 

## 40- 

## . .. . ·.·.



## ~ 45- :.:.: 

# . . .... Top 

### of CmlinCJ Elev. 31&.43 fl. USL ddlum Coordlncrtcs Drill Do

### to: Slort 

### n12ftlllf Drill

**M~lhod** CL1E 75/H!ll!ow=Stsn ,!ugg 8-lnch OD Drillc:r Wmt 

### Hmmot

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-Relllewed by -dl lim llr!t=V

meciJn Ia cacrsa sand with

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**"'-n~** 'I"I1 (IO'tft 6/2) 

### acauo.na lil)h!IJ

**c.......,..lg.~** (CaCCJ) lo:nsa_.....,.. ... IOO'JC. err 

## ·.·.· 0 50 55 

## . . 60 

# DRAFT E N 

# v I R 0 N LOG (I" 8(RtG HID 

### WUI. C(J(5lRUC'DON OETAlS o.oow -.

# M..,. .,.. ca-w s;.;... Pical:ho Solid Waate F'<1cU1ty Jab tto.OJ-«1&4A Aocwo¥eet llr.D/94 lmportal County. C<lllfornla 

## Page t 

## oJ 4 I1W!C 

## P-MW-2



# 8~ **23**

# DRAFT. f-65 0.0 01 18 

## -70 1-75 

### -80 

# l-85 o.o 18 

# f-90 f-95 t-100

-105 0.0 86 15 12

**~** 

### 65- 

# . ....

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# .. 

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# . . •.•

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# .

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# ·.·. . 

# . .' 

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# ·.·. ' 

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# . . 

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# . .

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### ~ 

### 85- 

## 90- 

## .· .·. 95- 10(}- 12 

### r5J105- 

# .. Top of Ca:Jing Elev. l16.4l ft. LISl dQtum 

# I CoordinGlss ------------- • DrfD Date: Start 

### Ulal91= Drfl!

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# l..~gged II)' 

## s. TDIT1mf.tl_,_ ----·-- 

# I

**R4~by~**

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### n.

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# J:b madam hi __..gl'ah.l,



### ~. **lllioj~Ur** cahaM: to 

# rlnl;h thick l!lodefote btoflll

**(~'tR** 5/4) lilhr day lens at 104-.5 

## 1'- ........ ;, predOfllinGntly fr>o to II'Mdl11111-grohed, cbnp, o51.!hUy c:Ohc:rivo to loo:M

### 10 -115



### 20 "'- ,....,. b

**prcd0111iot~fy** me lo II'Mdlum-oyoi'led. cbnp. aghlly

**coll~ve** II) louc 

# DRAFT

**l'rla~** 

## z oJ 4 I'DJR£


## . P-MW-2 

# B-23 € N 

# v I R 0 N LOG (]f" amNG NG EJ..



## CONSTRU~ DETAI.S
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# DRAFT
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### r-130 

## 130-

. . 1

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### 140-- 1-


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# . .. . • < <· t-150 150- .. 

## .. 

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## f-155 1 55-- r -160 0.0 go 15 15



## ~ 16(}- 

# : < ·. ·.·

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**~** 

### 165- . . Top of

**~** Elell.

**~1§.1-'** 

## n. ht$.. datum Coordlnote3 Drill Oate: Start 

### ...Am/94 F'mbh 8/29/94 DriU Uclhod .

### GfE 75Mo!Jor-stem Augm 8-ineh 00 

### Orarer

**~t** 

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### ft·"'T'!e•

## lletfS.-. sparae

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# -----

**_G~J' '·.::~~.~_..;,** 
socne

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**100.~** ft. l-h:h lhick c:tm .. t.d (C4COl)

**~** I""" al 1M.!i rt

### ~

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# ·--·...

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## . 70 

# i 0.0

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## .. 1(} 

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## .. 

# . . 

## ~17 : ;

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## .

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# ~l

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# :=

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# l .Iii"

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# ·= 80 1=· 0.0 33 18 18 

## .. 

# rs. .. i (ltd .,_,.,.., -1« at

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## .. **meddn-o-Gi~** llll'ld 

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## . . II\ SP ftlt: TO 

### umw smo.

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### ,., 

## ~ 17 1Sll8 

# DRAFT E:NVIRON lOG Cf IKJiJHG Nfl 

### WlflJ..

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### DETAILS

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### J 0

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### P-MW-2 

# B-2!

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# H9o 

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# - . 

# 1**I.~~~** 

# 1 .

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# m H95 t-200 

## -205 -210 

## t-215**~220 ~225**  

# DRAFT "":' 

### 7 8

## ~ 

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# '"" 

# ..**~** 

# ' i a "c 

### :,: iii 0 Q! 111 Ill Top cf Coiing Elav. 31M:J 

### n. MSL 

### mbnn Coordinates Orfll Oote:Start B/26/94 Dn11 Method SjME IQitJg!!ott=Stem A!Jqers**8-~** OD Dn11w 'Hal Hgrmg!IJlm Msms:t;bj LDgged by s. roavnm R4!'Jiawed by**~ ~M~~I1d~~~~~~~**  aamplc eollcalod rot o-t.dmioal**~ad.,m** al 185.5 ll ' ....**1910~~··~~-------------- ------------** **~** 

### 195- 200- 

## 205- 210- 

## 215-22o225-

### t-230 

## 230- -235 235- 

### t-240 

## 240- 

# DRAFT E N 

# v I R 0 H l.OG lF BORN;



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**~onnad:** 12/30/IH

**ltn~Of** County, CoUfomio 

### Pa.ge 4 of .f fiM£ 

### P-MW-2 

# B-230.0 

### r-10 

### -15 1-20 

### 1-25 1-.30 

# f-40 0.0

nn 

# DRAFT

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### lSJ



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## 20-
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## 35- 

# .·.· 45·

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## ~ UGIT

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### n

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## fSl 60 **~** anou1« 

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# 8-2" Pk#uc;hu Sdid Wg:rte FoQUity lmparial CGunly, Call(omia



# L ._, 

## / .· l ! .. . \ 

### ..

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### -·· ·' 

## P-MW-JA

## 1- 70 1-



### ~0 

# l-85 

# .. .. f-90 f-95 r-100 

### l-105 0.0
Q.Q

0.0 

# DRAFT

liS
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10
8$ 18 14 

### r\1 l] 

## 70-


# . 75- .. . 

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### f\1 Ul 90- 

## 95- 111 

## f\1UJIOO

### 105-

**~;** ,. "' r-'1 Top 

### or Co&lnt E1eY, 318.1! ft. Mst daN,m 

### CoordlnGte' Drll 

### Dala:Stort 8/2.&19!

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**Aug~**

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### lle~etred by 

### A:':

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t-id !hie* madetuta pllallbh
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# ~ 10 

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## .. -1-15 

## . 0.0 87 14 

## . . 20 

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## APPENDIX C SAMPLING AND ANALYSIS PLAN

BRYAN A. STIRRAT & ASSOCIATES

### SAMPLING AND ANALYSIS PLAN Groundwater monitoring for the Picacho Cut and Fill Landfill is performed by GeoLogic Associates. Since this facility is located on the Quechan Indian Reservation, it is regulated by the Federal government. Sampling and analyses are performed in general accordance with the sampling and analytical procedures included in existing U.S. EPA guidelines, as presented in 

### RCRA Ground Water Monitoring Technical Enforcement Guidance Document (U.S. EPA, 1986). A brief summary of the protocols used for sample collection is presented below. During each semiannual monitoring period, samples are collected from each accessible background and compliance well that contains water. Analysis of these samples is completed for the routine general chemistry monitoring parameters (chloride, nitrate as nitrogen, sulfate, total dissolved solids [TDS], and pH), arsenic and volatile organics as specified by the Site Specific Flexibility Request - Modified List of Detection Monitoring Parameters. Table 1 presents the analytical methods and techniques used by the laboratory as well as the type of sample containers and preservatives to be utilized during each routine monitoring period. The sampling protocols listed below will be generally followed during groundwater sampling operations. • Upon arrival at the wellhead, each monitoring point will be inspected for evidence of tampering and/or vandalism, and the well identification information will be recorded. Prior to sounding each well, a weighted water level indicator (sounder) will be decontaminated using alconox soap solution followed by two rinses with deionized water. Each well includes a notch on the well casing to hang a dedicated bailer in the well. The wells will then be sounded at the notch, ideally by the same technician with the same water level sounder to an accuracy to 0.01 feet. The initial water level and, if possible, the total depth of the well will be recorded on a Well Data Sheet. Based on this information, and the known 2- inch PVC Schedule 40 casing diameter, a purge volume will be calculated using the following equation: Where: 

## cv HW 

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## = (HW)(0.174) well casing volume (gallons) height of water column within the well (feet) conversion factor for a 2-inch diameter well (J:\Imperial County\PICACHO LF\2010.0044 FCPMP\Reports\Appendices\Appendix C- Samplan.Doc:1 0/21/201 O) 

### 1

### • The wells will be purged and sampled using dedicated bailers or new (factory sealed) disposable bailers. Up to three well casing volumes (under optimal conditions) of water will be purged and allowed to recover to 80 percent of original water elevation prior to sampling. Slow recharge wells (wells that do not recover to 80 percent of original water elevation within two hours) will be purged of a minimum of one well volume (purged dry) and allowed to recover sufficiently (for a period of about two hours) prior to sampling. • To assess the presence of fresh water coming into the well, electrical conductivity, turbidity, pH, and temperature will be monitored after approximately every one to three gallons of purging (depending on the well and total estimated purge volume requirements). • Sampling will be performed when the EC, pH, turbidity, and temperature have stabilized to within 10% between consecutive readings, and the total estimated purge volume has been reached. • For sample collection (either with the dedicated bailer or new, factory-sealed, disposable bailer), a bottom-emptying device will be inserted into the bailer, and the sample will be transferred directly from the bailer to the container. • Samples, including field blanks, will be collected in approved laboratory-prepared sample containers (Table 1). Each sample container will be filled completely and immediately capped, labeled, and placed in a cooler. Samples for VOC analysis will be filled by pouring the sample down the sides of the container to minimize aeration, and these sample vials will be capped immediately with no airspace. • Collected samples, accompanied by a trip blank, will be placed immediately in an ice-filled cooler for transport to a state-certified testing laboratory. Samples will be kept chilled (at about 4°C) until delivery. • A completed Chain-of-Custody form, detailing the sample numbers, date and time collected, analyses requested, and other project information will accompany each sample to the laboratory. The Chain-of -Custody forms will be signed and dated by all personnel retaining custody of the samples. (J:\Imperial County\PICACHO LF\201 0.0044 FCPMP\Reports\Appendices\Appendix C- S ampl an.Doc:1 0/21/201 0) 

### 2PARAMETER Chloride pH Nitrate as Nitrogen Sulfate Total Dissolved Solids Arsenic, Total Volatile Organics Notes: ICP = Inductively Coupled Plasma MS = Mass Spectrophotometry GC = Gas Chromatograph TABLE 1 PICACHO LANDFILL ANALYTICAL METHODS TEST METHOD TECHNIQUE 300.0 ion Chromatography 9040 Electrometric 353.2 Colorimetric 300.0 Jon Chromatography 160. 1 Gravimetric 200.8 ICP/MS 8260 GCJMS CONTAINER PRESERVATIVE Plastic Cool. 4°C Plastic None Plastic Cool, 4°C Plastic Cool. 4°C Plastic Cool, 4°C Plastic Nitric Acid, 4°C VOA- Glass Cool, 4°C