TABLES 

BRYAN A. STIRRAT & ASSOCIATES 
I 

PCFS FCPCMP 

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TABLE 1 

PICACHO SOLID WASTE SITE 

SITE LIFE PROJECTION 

Landfill Site 

Landfill Footprint 

Landfill Footprint to Site Ratio 

Volumes 

Remaining Capacity as of january 1, 2009 

Final Cover 

- Soil foundation layer, one-foot thick min. in 

addition to intermediate cover 

- Final Cover 

Remaining Net Capacity 

Design Placement 

Remaining Refuse and Daily Cover Soil 

Capacity 

Refuse to Cover Ratio 

Refuse Placement Density 

Disposal Rate 

Estimated Annual Average 

Projected Remaining Service Life11

l 

50 acres 

12.5 acres 

25% 

I 

72,642 cy 

70,583 cy 

2, 059 cy 

2,059 cy 

5:1 

0.5 tons/cy 

1,743 cyj yr 

1.2 years 

(1) Remaining service life projected using an average intake of waste from july 12, 2006 to 

December 31, 2008. 

BRYAN A. STIRRAT & ASSOCIATES 

]:\Imperial County\PICACHO LF\201 0.0044 FCPMP\Reports\TAB 1_Sitelife.DOC; 10/21/2010 
Botanical Name 

Agropyron spp. 

Agropyron spp. 

Vulpia myuros 

Trifolium hirtum 

Encelia farinosa 

Picacho Solid Waste Site FCPCMP 

TABLE 2 

PICHACO SOLID WASTE SITE 

FINAL CLOSURE 

VEGETATIVE COVER SEED MIX 

Common Name 

11Luna11 Pubescent Wheatgrass 

11Nordan11 Desert Wheatgrass 

Zorro Fescue 

11Hykon11 Rose Clover Inoculated 

Brittle Bush 

]:\Imperial County\PICACHO LF\201 0.0044 FCPMP\Reports\Table 2.Doc; 10/21/2010 

Pounds per Acre 

9 

24 

8 

15 

4 
TABLE 3 

PICACHO SOLID WASTE SITE 

CLOSURE IMPLEMENTATION SCHEDULE 

MONTHS 

ACTIVITY DESCRIPTION 1 2 

Closure Construction Start Date (

1 l 0 

Mobilization ~ -- - ~ - - Clearing, Grubbing and Demolition 

Rough Grading 

Drainage Improvements ~ 

Foundation Layer Filling and Grading iW///h ~ 

3 

-

Final Cover Placement ---

~ 

--- Gas Monitoring System Installation ~ 

Access Road/Security Fencing ~ 

-

Landscaping ~ 

- - -

Demobilization ~ 

(1) This date is dependent upon approval of the final closure construction plans. 

Picacho Solid Waste Site FCPCMP 

]:\Imperial County\PICACHO LF\2010.0044 FCPMP\Reports\TBL-3; 10/21/2010 
TABLE 4 

PICACHO SOLID WASTE SITE 

POST-CLOSURE MAINTENANCE SCHEDULE 

MAINTENANCE ACTIVITY FREQUENCY 

FINAL COVER MAINTENANCE 

A. Inspection 3, 6 

B. Repair 7 

ACCESS ROAD/STAGING AREA 

A. Inspection 2, 6 

B. Repair 1 

DRAINAGE FACILITIES MAINTENANCE 

A. Silt Debris Build-up 6 

B. Perimeter Drainage System 5 

C. AC and Concrete Drainage Channels 5 

GAS MIGRATION MONITORING SYSTEM MAINTENANCE 

A. Perimeter Probes 7 

LANDSCAPE MAINTENANCE 

A. Weed Control 7 

B. Reseeding 7 

FINAL SURFACE MAINTENANCE 

A. Weed Control 7 

SURVEY MONUMENTATION MAINTENANCE 

A. Disposal Area Monuments 4 

PERIMETER FENCE MAINTENANCE 

A. Inspection 3 

B. Maintenance and Repair 1 

GROUNDWATER MONITORING WELL MAINTENANCE 

A. Well Maintenance 1 

B. Well Replacement 7 

LEGEND 

1 =Annually 4 = Every Five Years 6 = After Each Heavy Rainfall 

2 = Semi Annual 5 = Annually During 7 = As Required 

3 = Quarterly Summer Months 

Picacho Solid Waste Site FCPCMP 

):\Imperial County\PICACHO LF\201 0.0044 FCPMP\Reports\TBL4; 10/21/2010 
EQUIPMENT REQUIREMENTS Small Dump 

Dozer Truck 

Final Cover Maintenance 

Inspection 

Repair ;it~f: ~~~i Access Road/Staging Area 

Inspection 

Repair 

Drainage Facilities Maintenance 

AC and Concrete Drainage 

Channels 

Gas Migration Monitoring System 

Maintenance 

Perimeter Probes 

final Surface Maintenance 

Weed Control 

Survey Monumentation 

Maintenance 

Disposal Area Monuments 

Perimeter Fence Maintenance 

Maintenance and Repair 

Groundwater Monitoring Well 

Maintenance 

Well Maintenance 

Well Replacement 

Groundwater Monitoring 

Gas Migration Control System 

Monitoring 

TABLE 5 

PICACHO SOLID WASTE SITE 

POST-CLOSURE EQUIPMENT SCHEDULE 

Backhoe 

Motor Skip wj Bucket Compactor Sheepsfoot Tampers 

Grade Loader Loader Compactor J~~~H ;~~~~;3;~:; ~t;r~~~~~~~ :;~~I~~~y~{ 

~~i~~~ 

M?'·'-*-"' :itt*;;;;: 

Water Pickup Flatbed Boom Portab

Truck Truck Truck Truck Genera

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(J:\Imperial County\ PICACHO LF\201 0.0044 

BRY
TABLE 6 

PICACHO SOLID WASTE SITE 

POST-CLOSURE MONITORING SCHEDULE 

MONITORING ACTIVITY FREQUENCY 

GROUNDWATER MONITORING 

A. Groundwater 2 

B. Constituents of Concern Monitoring 3 

C. Groundwater Elevation/ Flow Rate/ Direction 2 

GAS MIGRATION MONITORING SYSTEM MAINTENANCE 

A. Perimeter Probes 1 

SETTLEMENT 

A. Settlement Monument Monitoring 3 

LEGEND 

1 = Quarterly 

2 = Biannual 

3 = Every Five Years 

Picacho Solid Waste Site FCPCMP 

]:\Imperial County\PICACHO LF\201 0.0044 FCPMP\Reports\TBL-6:1 0/21/2010 
PCFS FCPCMP 

TABLE 7 

PICACHO SOLID WASTE SITE (SWIS NO. 13-AA-0012) 

CLOSURE COST ESTIMATE SUMMARY 

(201 0 DOLLARS) 

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1 FINAl COVER 

Mnhilh, lion/D• .,v,.:; iliL.d lion_ - Is $40,500 

Clear and Grub 12.5 acres $506 

Slope Area 

Preliminary Grading 64,207 sf $0.07 

Foundation Layer (2' thickness- 1' existing) (1]{2) 2,378 cy $3.54 

2.5' Monolithic Random Soil Cover (3} 5,945 cy $3.54 

Deck Area 

Preliminary Grading 486,130 sf $0.04 

Foundation Layer {2' ,;L"""~"- 1' existing} (1 )(2) 18,005 cy $2.53 

2.5' Monolithic Random Soil Cover (3) 45,012 cy $2.53 

Survey Monument Installation 4 ea $2,000 

Surveying - Is 

Subtotal 

2 I FINAl COVER CONSTRUCTION QUAliTY ASSURANCE 

I Field Personnel/ !I ~/Reporting _1_.5 mos _$9,988 

Subtotal 

3 DRAINAGE LVN 1 KIJL SYSTEM 

V-Channel (AC} 560 If $30 

V-Channel 25 If $30 

Grouted Rip-Rap 50 sf $6 

Subtotal 

4 I EROSION LUN I KUL 

[Pit Run Rock ( 4) 6,720 cy $25 

I Drilf Seeding 12.5 acresl $1 ,000 

Subtotal 

5 IGAS MIGRATION MUNIUJRING SYSTEM 

1 0 • ""'"'"' non1wnng probe installation {5} 4 ea $5,000 

Subtotal 

6 !GROUNDWATER MONI JKIN\. SYSTEM (6) 

Subtotal 

7 !SITE SECURITY 

I Fencing 3,940 If $14 

Subtotal 

8 I DEMOliTION (7} 

ID· '"'1 c. le House/Salvage Scales Is j~,000 

Subtotal 

9 !CONSTRUCTION MANAl.FMENT 

!Construction Management 3 mos $28,600 

Subtotal 

10 I ENGINEERING 

1 Design & c. .;f;, •+;, 1s Is $20,200 

Closure Certification - Is $4,000 

Subtotal 

Total Cost 

Assumuptions: 

(1) Cost assumes that only one foot of random soil would need to be placed for the foundation layer 

because one foot of soil would already be in-place. 

'!llruJ"rllll 

$40,500 

$6,325 

$4,548 

$8,423 

$21 ,057 

$19,679 

$45,553 

$113,880 

$8,000 

$6,000 

~273,965 

$14,983 

$14,983 

$16,800 

$750 

$300 

$17,850 

$168,000 

$12,500 

$12,500 

$20,000 

$20,000 

$0 

$55,160 

$55,160 

$25,000 

$25,000 

$85,800 

$85,800 

$20,200 

$4,000 

$24,200 

$529,458 

(2) Costs for preparation and compaction of the existing one foot of foundation is included in this item. 

(3) Includes installation cost for admixture layer 

(4) Includes purchasing and transportation cost 

(5) Includes equipment, labor, material, and mobilization/demobilization 

(6) No additional construction proposed for this system as part of closure construction. 

(7) Demolish/Salvage Scalehouse/Scales 

]:\Imperial County\PICACHO LF\201 0.0044 FCPMP\Reports\PICTbl-7; 10/21/2010 
TABLE 8 

PICACHO SOLID WASTE SITE 

ANNUAL POST-CLOSURE MAINTENANCE AND MONITORING 

COST ESTIMATE SUMMARY 

(2010 DOLLARS) 

U~\i~ ~ 1mwmm::mw •: mm: ~!~~~~ :mm:Jj! • ::mmR~~ml~mm~ ::!m ~rMlm:m :w :m:: r4~~:mmill 1 I FINAL COVER INSPECTION AND REPAIR 

labor 16 hr $ 150 $2.400 

I Cover Soils Repair 

f.roooln .... Dn: {includes operator) 16 hr S3i4 -$5.019 

r·rerc 16 11..- S9s S1.520 

I Geolo<tis 8 hr Sl 22 !i976 

Mate.,lals (cover stockp ile I I onsitel $0 

Total Final :over 1 and Reoalr $9.9 f5 

2 I ACCESS ROAD )N AN[tMAINTENANCE (11 

··••· 1 ·labor I . I . I $0 

I Repair · l.1bor & Material I - I . I $0 

Total Access Road lnsoedion and M aintenance so J '"'".u.r:o: INSPECTION. MAfNTENANCE AND REPI.IR !21 

labor t6 nr $150 52.400 

pQ, Draina~eFacliiti es 

labor 2•1 hr $60 .$1.440 

Ectuipmem !includes orJeratorl 24 hr $210 $5.040 

Materials . . $800 

Total Drainage • and Reoair $9.601 

4 SITE SECURITY 

Labor I 4 hr I s1s0 I $600 

ral~an>l' I 8 hr I $200 I $1,600 

Total Site Secu.ritv $2.200 

5 FINAl~ IRH, "I' MAINTENANCE 

!Reseeding I T 

Labor and Material I .25 ac S·l 110 I $253 

rota! Landscape Maintenance $253 

6 GROl.JNt tWA t K MONI UKINI.. 

Biannual : Prol!:ram 

Field 32 hr S100 53.200 

Eq~ . . $960 

Analysis 

Indicator 10 hr $60 $GOO 

Volatile Or2anic .,4 hr $130 $1.820 

Biannual & Annual Report 

Site Engineer 40 hr $150 $6.000 

Office Support 20 fir S6o sf:2oo ; of Concern CCOCl Monitorinl! Prol!ram 

Labor '16 hr '>90 $288 

I Analysis 

Gm• onrf=tar CO( . Is $6.330 $ 1:266 ; of Concern Reoort Preoaration 

Slte Engineer 20 hr $150 $600 

Offfce Support 10 hr $60 $120 

Tota.l $1 &.054 

7 tKM i SYSTEM MAIN. tN 'N( 

I Well Repair 1rourweus In 30 vearsl 

ueOIOI:ISI 40 hr $180 

Driller 40 nr s6o 

Eaulomem/Materials " ea $2.000 

Well Abandonment 4 '"' .$3,400 . Total · Monitoring Svstem s· ,040 

8 GAS PROBE MONITORING AND MAINTENANCE 

I Samollnl! ~as In orobes 

Field Technician 16 hr S100 $ 1.600 

i Equipment $500 

nee/Repair (1 probe everv 30-vea..SI 1 ea $5.000 - I Annual Repair L (ln 30 years) $167 

I Total Gas Probe :and ~ (J) $2,267 

!TOTAl ANNUAl POSf.rl n~1 1>~ ; & MAINTENANCE COSTS s41A09 

!TOTAL 30·YEAR PQST.rt n~ttD<; MUNIIUKINv & UA ' COSTS $1.242.256 

(1) Access road maintenance is included In Final Cover Maintenance 

(2) Includes cost for inspection of drainage channels, basins after high intensity storms (assume 2 events/year). 

Includes cost for silt/debris clearing and corrective measures mentioned in the Post·Ciosure Plan. 

(3) Includes annual cost of sampling gas in probes (field technician and monitoring equipment) and Annual 

Repair-Replacement Cost. 

PCFS FCPCMP 

(l:\lmperiai\9899\Reports\Fcpcmp\PICTbl·8: 1 0/21/201 0) 
FIGURES 

BRYAN A. STIRRAT & ASSOCIATES 
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D6S (909) 860-7777 

BRYAN A. STIRRAT .!c ASSOCIATES 

CIVIL AND ENVIRONMENTAL ENGINEERS 

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PICACHO CUT AND FILL SITE JOB NO. 

951D-4A 

DATE 

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LOCATION & VICINITY MAP DRAWN BY 

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BRYAN A. STIRRAT c!c ASSOCIATES 

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Longitude -114.6230 W 

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BRYAN A. STIRRAT &c ASSOCIATES 

CIVIL AND ENVIRONMENTAL ENGINEERS 

1360 VALLEY VISTA DRIVE DIAMOND BAR, CA 91765 

PICACHO CUT AND FILL SITE JOB NO. 

951o-4A 

DATE 

6-8-95 

FAULT MAP DRAWN BY 

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SURVEY MONUMENT 

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LEGEND 

DRAINAGE TRIBUTARY AREA 

- -- --

- DRAINAGE SUB-AREA 

00 NODE NAME NODE DESCRIPTION 200 ELEVATION 

110.36 AC I AREA IN ACRES 

PICACHO CUT AND FILL SITE 100 YEAR RUNOFF STUDY 

SUMMARY TABLE 

Sub Area Sub Area Runoff Total Area Peak Runoff 

(Acres) (CFS) (Acres) (CFS) 

4.01 15.29 

4

.01 15.29 

1.09 

4

.16 

5

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.45 

1

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4

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4

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1

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5

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2

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2

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Decription 

INITIAL 

INITIAL 

INITIAL 

CONFLUENCE 

IN

ITIAL , 

0 ENO 

0 

.... INITIAL/END 
PICACHO SOLID WASTE SITE 

THIS FACILITY IS CLOSED 

CLOSURE AND POST-CLOSURE MAINTENANCE PLANS 

FOR THIS FACILITY MAY BE VIEWED 

AT THE OFFICES OF THE COUNTY OF IMPERIAL 

DEPARTMENT OF PUBLIC WORKS 

LOCATED AT: 

155 SOUTH 11TH STREET 

EL CENTRO, CALIFORNIA 92243 

IN CASE OF EMERGENCY, A COUNTY OF IMPERIAL 

DEPARTMENT OF PUBLIC WORKS 

REPRESENTATIVE CAN BE REACHED AT: 

(760) 339-4462 

THANK YOU FOR YOUR COOPERATION 

FIGURE 9 

BRYAN A. STIRRAT & ASSOCIATES 
FULL-SIZE DRAWINGS 

BRYAN A. STIRRAT & ASSOCIATES 
8 

L{) 

4--

NAME: /USR7 / DWG/IMPER IAL/PICD/26067DB.DWG DATE: VY 20, 1998 TIME: 8:26 /W, 

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-4-

0 

0 

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II 

I I/ 

I I 

I I 

I I 

I I 

I I 

I I 

I I 

I I 

0 0 

L{) 

0 

-

-4-

-

1\ 

0 0 

L{) 

--

-4-

I 

I 

I 

I 
N 

GRAPHIC SCALE 

( IN FEET ) 

LEGEND 

- · - · -APPROXIMATE LIMIT OF WASTE 

----APPROXIMATE LOCATION OF PROPER1Y BOUNDARY 

-----TOE OF SLOPE 

- - - - DAYLIGHT /GRADEBREAK 

-940- PROPOSED INDEX CONTOURS 

- 940 - EXISTING INDEX CONTOURS 

---*-- EXISTING FENCE 

--:x PROPOSED FENCE 

=-======-==== DRAINAGE BERM/ V-CHANNEL 

SETTLEMENT MONUMENT SURVEY MONUMENT 

APPROXIMATE LOCATION OF SURFACE SAMPLE TO DETERMINE 

THE FEASIBILITY OF ON-SITE COVER BORROW SOURCES 

--- PROPOSED V-DITCH 

DATE OF TOPOGRAPHY: JULY 1 

...... 

.... 

X -

200671 

.... 

. ... 

I 

I 

I ·-

..... 
.-----l"h--4" DIA X 1\4" STEEL PIPE 

FILLED WITH CONCRETE 

CONCRETE BASE 

I 

· bJ hl-rl 1_1_!"11 •- .. v. .. v.. '"II_ _I_! III 

IT- . .. II 

"'Ill ..ll"ll 1rll...!..!:ll 'II_ ..1111 1 FINAL COVER 1'-'-TTI-'-' 1'-TTI--'-TTT IIA I 

24" SO 18'' SO 1/4 PLATE 

WELDED TO BOTTOM 

OF PIPE 

SECTION A-A 

NAIL AND TAG EMBEDDED 

1'' HIKE 1)4'' 

\ IN CONCRETE 

CYLINDER CAN -........... \- I 

't' GALV STEEL PIPE i>. :; 1 o• LONG FILLED WITH FINAL COVER 

2500 PSI CONCRETE 

........_ ll---- 4" DIA X 1\4" 

STEEL PIPE FILLED 

WITH CONCRETE 

SECTION B-B 

B 

l .. 

--+--------l;x.r- SURVEY / SETTLEMENT • LOW PERMEABILITY LAYER & ROCK LAYER 

APPLIES TO SETTLEMENT MONUMENTS ONLY 1\ MONUMENT A 

-- L _j CONCRETE BASE 

- TYPICAL 4 PLACES 

NTS ,-/ 

4" 

.. 

.. . v .. 

... 

. ·v ..... 

6"Xff' 10/10 

WIRE MESH 

.. 

.. 

. . . '! .. 

6' 

... . . .. 

. v· .... 

- ·P'_·· .. )-P'. ·· .. 

.. v· -_ v. -. 

. . 

.. 

·• . : v· · .. v. · .. 

4" 

CONCRETE V-CHANNEL 

NOTE: 

AC V-CHANNEL SHALL BE 

USED OVER WASTE AREA. 

6' 

4" 

AC V-CHANNEL 

LLJ 

Vl 

:::0 

ub 

0:: 

..... 

0 

0 0 

..... 

0 

.. 11 4"- Pvc IA8cocK 

C;'I-IAI I ow PROBE - S 

iNTERM.EDIATE PROBE - I 

-

- D 

1 

/ I.D. TAG INDICATING DEPTH OF 

"'"- PROBE (I.E. S, I, D) 

u PAVEMENT 

------ PAVING BASE 

----- COMPACTED FINAL COVER MATERIAL 

t" PEA GRAVEL, 2" THICK 

BOTTOM OF----........ 

TO .. I " THICK SEAL, TYP NEAT CEMENT 

PLACED BY TREMIE METHOD 

11"J 

THK. , CASING TYP, BLANK 1/2" 

DIA. SCH. 80 PVC, FLUSH 

THREADED OR BLANK 3/ 4" DIA. 

SCH. 80 PVC, FLUSH THREADED 

PVC {DO NOT GLUE), TYP 

THICK SEAL, TYP NEAT CEMENT 

PLACED BY TREMIE METHOD 

GEOTEXTILE BETWEEN 

GRAVEL AND SEAL, TYP 

.,--GRA\/IEELI PACK, #3 GRAVEL OR 

EQUAL, TYP 

, SCREEN, TYP 1/2" DIA. 

SCH. 80 PVC, FLUSH THREADED 

LANDFILL ""- 13-. WITH 1 ROW OF 0.02o'' SLOTS OR 

3/ 4" DIA. SCH. 80 PVC, FLUSH 

THREADED WITH 2 ROWS OF 

12" 0.020" SLOTS 

• DEPTH VARIES {SCARIFY /RECOMPACT UPPER 1.0' 

PER CQA MONITOR REQUIREMENTS) 

AL TI::.HNA TIVE FINAL TYPIC. 

•OVERSIZED ROCK FROM 

STOCKPILE SHALL BE USED 

FOR RIP RAP PAD. 

PLACE +6'' ROCK• 

FINISHED GRADE 

PER PLAN 

I 

\.._8 OZ GEOTEXTILE PLACED 

ON THE BOTTOM AND SIDES 

OF EXCAVATED SUBGRADE 

I 1 o· 

SUBGR

RIPRAP TO ACCO

CHANNEL OUTLET 

V-CHANNEL LANDFILL MONI fORING p.-,OBE / 5 "' RIP RAP PAD 

NTS ,-/ NTS \,-/ 

1n/?1/?n1n P.·1Q 
'!) 

Nodes 

No. 

1.01-1.02 1.02-1.03 1.04-1.05 1.05-1.03 1.06-1.03 

1.03 

1.01-1.06 1.06-2.03 

3.01-3.02 

LEGEND 

DRAINAGE TRIBUTARY AREA 

- DRAINAGE SUB-AREA 

NODE NAME NODE DESCRIPTION ELEVATION 

110.36 AC I AREA IN ACRES 

Sub Area 

(Acres) 

4.01 

1.09 1.02 

0.01 

1.61 

2.87 2.50 2.07 

PICACHO CUT AND FILL SITE 

100 YEAR RUNOFF STUDY 

SUMMARY TABLE 

Sub Area Runoff Total Area Peak Runoff 

(CFS) (Acres) (CFS) 

15.29 4.01 15.29 

4.16 5.10 19.45 4.05 1.02 4.05 

0.04 1.00 4.08 

5.85 1.61 5.85 

7.7 28.83 

9.02 2.87 9.02 

7.83 5.40 16.82 

10.60 2.07 10.60 

/\" .... 

LIMit' OF 

Decription 

INITIAL INITIAL INITIAL 

CONFLUENCE 

INITIAL 

END 

INITIAL/END \ 

DATE OF TOPOGRAPHY: JULY 
(!) 

Cl 

rn 

Cl 0 

<0 

I") 

co 

I") 

b 

I 

(.) 

a.. 

<( 

[t: 

w 

a.. 

rEARTHEN BERM 

350 I I 

PROPOSED ACCESS ROJ! D-. I 340 \ / 

k:_ _... 330 

/ 

--

320 ""-- APPROXIMATE REFUSE LIMI 310 300 

290 0 1+00 2+00 

\ 

\ 

\ 

3+00 4+00 

rPROPOSED FINAL GRADE 

/ 

/ 

--

f-EXISTING GF ADE 

5+00 

SECTION A-A' 

HORIZONTAL SCALE: 1" =40' 

VERTICAL SCALE: 1" =20' 

6+00 

rEARTHEN BERM 

I 

I 

I 

....... / 

" -" / "' " L. "' '""'""' " 

7+00 

PROP DSED A

r APPROX

/ REFUSE 

b( 

, ........._ 

"\. " 

'-- 

---

rEARTHEN BERM /PROPOSED FINAL GRADE 

f- / L \ 

V / \ 

...... , / '\ 

'-. REFUSE LIMIT 0 1 +00 2+00 ""' 3+00 

"\._PROPOSED BASIN 

4+00 5+00 6+00 7+00 

HORIZONTAL SCALE: 1" =40' '0" DATE OF TOPOGRAPHY: JULY 12, 2006 VERTICAL SCALE: 1'' =20'