7.9_H-Environmental Site Assessment.pdf — Moreno Valley City Council, June 3, 2025 (part 2 of 2)

10.a- 11.0
Software Version / !f3.4ll700
Sample Name , . 210617-19\
Instrument Name ·: GC-1
RackNial 0/38
Sample Amount : 1.000000
Cycle 3
20/2 RE
rsr1
- Result File: E:\GC DATA\GC-l\12021\12106\1210617\A050.rst Sequence File: E:\GC DATA\GC-l\12021\12106\1210617\1210617.seq (1)
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Component Area Adjusted
Name [uV"sec] Amount
C4-C10 45435 10.2
C10-C28 281702 87.9
C28-C35 1026034 364.5
1353171 462.6
,.n 2.{] :rn
Date
Data Acquisition Time
Channel
Operator
Dilution Factor
6/18/20211106:55 AM
6/18/2021 8:39:46 AM
A
tcprocess

1.000000

Page 1 of 1 ends

11 11 rp 1111 111111 1111 111111 1 i q rrrq 11 111 1111111 111111 ~ 111 111 1111 1111 50 6.0 7,0 BO Q.O 10.0 11.0
Time[min]
8015 Results
Soffwsre 1,'8allJ1 , 6 M,1,1100
Saiq:mN~·ne. r;,. -ll•W•20 ~Z RE
Instrument Name , Gel C;
RacW\'iaJ 0139 _11
Sample Amount : 1.000000
Cycle ! ~
Result File: E":\GC DATAIGC-I1I2021\I21061I210617\A051.rst Sequence File: E:\GC DATAIGC-I1I20211I2106\I210617\I210617.seq >
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Component Area Adjusted
Name [uV'sec] Amount
C4~C10 51207 11.5
C10~C28 412623 97.5
C28~C35 1146590 397.7
1610421 506. 7
Date 6/18/202111:0720AM
Data Acquisition Time : 6/18/2021 8:56:07 AM
Channel : A
Operator tcprocess
Dilution Factor 1.000000

6.0 Time[min]
8015 Results

Page 1 of 1 ends

111111111 II~ II
Q.O 10.0 11.0
Software Version ·( 6;)4'070!?_
Sample Name . 210617-21
Instrument Name : • GC-I
RackNial : 0/40
Sample Amount : 1.000000
Cycle : 5
2P/2 RE
&f3
Result File : E:\GC DATA\GC..I\I2021\12106\I210617\A052.rst Sequence File: E:\GC DATA\GC..l\I2021\I2106\I210617\I210617.seq >
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Component Area Adjusted
Name [uV'sec] Amount
C4-C10
C10-C28
C28-C35
51493 1M
30436G a~.5
767629 ~ll3.5
1123488 394.6
Dais
Data Acquisition Time
Channel
Operator
Dilution Factor
Time[minj
8015 Results
6/18/20211:11:42 PM
6/18/2021 9:12:31 AM
A
, tcprocess
: 1.000000

Page 1 of 1 ends

Software Version : 1
,ulli'OO
Sample Name , \2.10ilr7-22 20/2 RE
lnslrument Name : )
Rack/Vial 1!141 f"..?f '1
Sample Amount : 1.000000
Cycle : 6
Result File· E:\GC DATA\GC-l\I2021\I2106\I210617\A053.rst Sequence File: E:\GC DATA\GC-l\I2021\I2106\I210617\I210617.seq 60 50
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Date
Data Acquisition Time
Channel
Operator
Dilution Factor
6/18/202111:11:30AM
6/18/2021 9 28:57 AM
A
tcprocess

1.000000

Page 1 of 1 ends

111 11111111 1111111 11r111 i 1111 111111 11 11111111 1111 ~ 1111 111111 11111 r 1111 11 1111111 111111 1 rrri 1111 i 111 11111 1111 111 11 1111 11 1 2.0 30 .t I) 5.0 6.0 7,,0 8.0 !Hi 10.0 11 .0
Time[min]
8015 Resu Its
Component Area Adjusted
Name [uV'sec] Amount
C4-C10 68464 15 6
C 10-C28 608290 111 ~
C28-C35 2469153 161 .5
3145907 889.0
Software Version/': 6.14.0?00
Sample Name : 210617-~ .20/1 11
Instrument Name : !3C-I . ,:;::Ti. Rack/Vial : 0/42 \ .,, I'" Sample Amount : 1.000000 ··,,
Cycle : 7
Result File : E:\GC DATA\GC-l\I2021\I2106\I210617\A054.rst Sequence File: E:\GC DATA\GC-l\I2021\I2106\I210617\I210617.seq ~ C
0 Q.
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Component Area Adjusted
Name [uV'sec] Amount
C4-C10 41354 91
C10-C28 1080616 146.fi
C28-C35 3858729 11437
4980698 1299.5
10 3.-0
Date
Data Acquisition Time
Channel
Operator
Dilution Factor

6.0 Time[min]
8015 Results
6/18/202111:11 :54AM
6/18/2021 9:45:27 AM
A
tcprocess
: 1.000000
ll.O

Page 1 of 1 ends

li!nffnllmlllll llii iilll

9.0 11.0
Software Version :__a.3.MlIOO
Sample Name t': 21001~ ~
Instrument Name • GG-L • _ (;
RackNial G\tl, l --:;,(C,
Sample Amount .om:ooo
Cycle 14
Result File: E:IGC DATA\GC-l\I2021\12106\12106171A061 rst Sequence File : E:IGC DATA\GC-11I20211I21061I2106171I210617.seq >
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Component Area Adjusted
Name [uV'sec] Amount
C4-C10 75061 7 .l
C10-C28 631500 113 6
C28-C35 1226329 41 !l.il.
1932889 550.4
,I) 2.0 3.0 4 0
Date
Data Acquistticn Time
Channel
Operator
Dilution Factor

6.0 Time [min]
8015 Results
6/1812021 1:04:23 PM
6/18/202111:41 :19 AM
A
tcprocess

1.000000

9.0

Page 1 of 1 ends

10.0 11(1
Software Version (6::f41)'l()0
Sample Name .,/10617,~5 JI)/2 RE
Instrument Name : 6C:!.__ ·"2:' fl ,, RackNial : 0/44 I i '--f' Sample Aroount : 1.000000 -
Cycle : 15

Page 1 of 1 ends

Date 6/18/20211:04:28 PM
Data Acquisition Time : 6/18/2021 11 :57:58 AM
Channel ; A
Operator ' tcprocess
Dilution Factor 1.000000
Result File: E:\GC DATAIGC-11I20211I21061I210617\A062.rst Secuence File : E:IGC DATAIGC-I\I20211I21061I210617\1210617.seq > .s
(1)
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C
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(1)
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Ccmponent Area Adjusted
Name [uv•sec] Amount
C4-C10
C10-C28
C28-C35
38660 B.&
484497 101,S
642337 :1'59,0
1165494 370.3
,m H' H, ""fflffITTil I liflflfft fl ill tt1m1,nrn11 1,1111Ahflllfml R iiPhlt I llll llmF I IMlll'Jllm IIITTT 111 111 11,, 1111111111111111TI rp 11 11111111 111111111111 r1 111111 iTTF I 11111111111111111 111111111 3 Ll 4,0 !i.Cl 6.0 T,0 8 Cl 9,0 10.0 11 .0
Time[min]
8015 Results
Software Version
Sample Name
Instrument Name
RackNial
Sample Amount
Cycle
Result File : E:IGC DATA\GC-I1I20211I2106\I210617IA057.rst Sequence File: E:IGC DATA\GC-l\I20211I2106\I2106171I210617.seq ~ 4 C
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Date 6/18/20211:02:43 PM
Data Acquisition Time : 6/18/202110:34:58 AM
Channel A
Operator tcprocess
Dilution Factor 1.000000

Page 1 ends

r 1111111111 1111111111 1
1 111111 1111 111 111 1111111 111 111 111111111 1 n I r 1111, i 1 11111 11 111 1 11111 I ' 1111111111 1111 111111 11 1111 1 G " (} :l O HI 5.0 6.0 7. 0 80 90 Ul.ll 11 .0
Component Area Adjusted
Name [uV'sec) Amount
C4-C10
C10-C28
C28-C35
35956 7~
418605 ~,-~
915321 :rn 1
1369882 439. 9
Time [min]
8015 Results
Software Versio~..;--6:3:4:fllOO
Sample Name \ : 210617-51 'l}_(l RE
lnslrumen_ tName'~-~ 1: jJ~
Riltki'/1,JI ' ~ ,,.1·
Sample Amount : 1,000ll
Cycle : 11
Result File: E:\GC DATA\GC-l\I2021\I2106\I210617\A058.rst Sequence File : E:\GC DA TA\GC-I\I2021\I2106\I210617\I210617.seq >
.s
<JJ
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Component Area Adjusted
Name [uV'sec} Amount
C4-C10
C10-C28
C28-C35
31895 ~
333308 9t 1
.860895 j19.1
1226097 417.7
10 01N 00 M
"q"(!) CQJ) --
~~ ~ N
iii i II I

3.0 40 s ti
Date
Data Acquisition Time
Channel
Operator
Dilution Factor

6.0 Time[min}
8015 Results
6/18/2021 1 :03: 14 PM
6/18/202110:51:36 AM
A
tcprocess

1.000000
7B S.O e.o
l(Q'') ~ O- N') l{) NX)
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1111
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11 .0

Page 1 of 1 ends

1111
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Software Version -<-6:3:4:07-00
Sample Name ( : 210617-52 Y.012 RE
lnslrument Name '-:-GC-i• • ,/ij--·
Rack/Vial 0/4 7 J~ , · 1 0
Sample Amount : 1.0000u1(
Cycle : 12
Result File : E:IGC DA TA\GC-I1I20211I2106\I2106171A059.rsl Sequence File: E:\GC DATA\GC-l\I2021\I2106\I210617\1210617.seq >
.s
Q) "' C
0 0.
<I> "'
0:::

Date 6/18/20211:03:24 PM
Data Acquisition Time : 6/1812021 11 :08: 11 AM
Channel ~
Operator tcprocess
Dilution Factor 1.000000
~llilllli iill If, 1lllllllllllllliillfllm!H1tlll/@1i,iiiii111in(~ 8015 Resulls
Componenl Area Adjusted
Name [uV'sec] Amount
C4-C10 44108 9.-0
C1 0-C28 825292 127 n
C28-C35 1476261 488.~
2345661 626.0

Page 1 of 1 ends

~fi;1lr!Slrlffltii iinP 11 1 llllil 1111 I 111 Ill 11 ,1 Ill Enviro Chem, Inc
1214 E. Lexington Avenue, Pomona, CA 91766 Tel (909)590-5905 Fax (909)590-5907 8015B QA/QC Report
Date Analyzed: 6/17-18/2021 Units: mg/Kg (ppm)
Matrix: Soi I/Sol id/Sludge/Liquid
Matrix Spike (MS)/Matrix Spike Duplicate (MSD)
Spiked Sample Lab 1.0.: 210617-52 MS/MSD
Analyte SR spk cone MS %MS MSD %MSD %RPO ACP %MS ACP RPO C10~C28 Range 0.0 200 196 98% 201 101% 3% 75-125 0-20% ' LCS STD RECOVERY:

Analyte spk cone LCS % REC ACP
C10~C28 Range 200 201 101% 75-125
Analyzed and Reviewed By: ---,/Ht~~ ~--
Final Reviewer: - - -------
Enviro - Chem, Inc.
1214 E. Lexington Avenue, Pomona, CA 91766 Tel (909) 590-5905 Fax (909) 590-5907

LABORATORY REPORT
CUSTOMER : Leighton & Associates, Inc.
10532 Acacia, Suite B-6, Rancho Cucamonga, CA 91730
Tel: (909)484-2205 E-Mail: [email protected]
PROJECT: 13177.001
MATRIX:SOIL
SAMPLING DATE:06/16/21
REPORT TO:Mr. ROBERT HANSEN
DATE RECEIVED:06/17/21
DATE EXTRACTED:06/18/21
DATE ANALYZED:06/18/21
DATE REPORTED:06/23/21
PCBs ANALYSIS
METHOD: EPA 8082
UNIT: mg/Kg= MILLIGRAM PER KILOGRAM= PPM
SAMPLE LAB PCB- PCB- PCB- PCB- PCB- PCB- PCBI . D. I.D. 10 1 6 1221 1232 1242 1248 1254 1260 SPl 210617-19 ND ND ND ND ND ND ND
SP2 210617-20 ND ND ND ND ND ND ND
SP3 210617-2 1 ND ND ND ND ND ND ND
SP4 210617-22 ND ND ND ND ND ND ND
SP5 210617-23 ND ND ND ND ND ND ND
SP6 210617-24 ND ND ND ND ND ND ND
SP7 210617-25 ND ND ND ND ND ND ND
SP8 210617-26 ND ND ND ND ND ND ND
SP9 210 617-51 ND ND ND ND ND ND ND
SPl0 210617 -52 ND ND ND ND ND ND ND
Method Blank ND NlJ ND ND rm D
MDL 0.005 0 . 005 0.005 0.005 0.005 0 . 005 0.005
PQL 0 . 01 0.01 0 . 01 0 . 01 0 . 01 0 . 01 0.01
COiviMENTS
OF= DILUTION FACTOR
MDL = METHOD DETECTION LIMIT
PQL = PRACTICAL QUANTITATION LIMIT
J = TRACE CONCENTRATION BETWEEN MDL AND PQL
ACTUAL DETECTION LIMIT= PQL X OF
ND= NON-DETECTED OR BELOW THE ACTOAL DETECTION LIMIT
TOTAL
PCBs*
ND
ND
ND
ND
ND
ND
ND
ND
ND
ND
ND
0 . 005
0 . 01
*= SUM OF THE PCB 1016, 1221, 1232, 1242, 1248, 1254 AND 1260 DF
l
1 1
l
1 1
l
1 1
1 1
,i- - THE CONCENTRATION EXCEEDS THE TTLC LIMIT OF 50, AND THE SAMPLE IS DEFINED AS HAZARDOUS WASTJ,,/ S PER CCR-TITLE 22 (IF MARKED) Data Reviewed and Approved by:-""'k:'------- - -- CAL-DHS ELAP CERTIFICATE No.: 1555 -
Enviro-Chem, Inc.
1214 E. Lexington Avenue, Pomona, CA 91766 Tel (909)590-5905 Fax (909)590-5907 EPA 8082 QA/QC Report
Matrix:

Unit:

Soi I/Solid/SI udge
mg/Kg{PPM)
Matrix Spike (MS)IMatrlx Spike. Duglicate (MSD)
Date Analyzed :

Spiked Sample Lab I.D.: 210617-51 MS/MSD
6/18/2021
-
Anal te S.R. s k cone . MS %REC MSD %REC %RPO ACP %RPO ACP %REC PCB (1016+1260) 0.000 0.100 0.097 97% 0.094 94% 2% 0-20% 70-130 Lab _f_ontrol Spike (LCS) Recovery:

Analyte spk cone LCS % REC ACP %REC
PCB (1016+1260) 0.100 0,087 87% 75-125
,Surrogate Recoverv ACP% ACP% I %REC %REC %REC %REC %REC %REC Sample I.D. MB 210617-19 210617-20 210617-21 210617-22 210617-23 210617-24 Tetra-ch loro-meta-xylene 50-150 119% 128% 123% 124% 123% 127% 104% _Decachlorobipnevl 50-150 105% 99% 92% 91 % 86% 85% 72% SurroQate Recovery ACP% %REC %REC %REC %REC %REC %REC %REC Sample I.D. 210617-25 210617-26 210617-51 210615-52 I
Tetra-ch loro-meta-xylene 50-150 120% 90% 73% 108% - -
Decach lorobipneyl 50-150 83% 66% 51% 69%
SurroQate Recovery ACP% 1' %REC %REC %REC %REC %REC %REC %REC : Sample I.D.

Tetra-ch loro-meta-xylene 50-150 I
Decach lorobipnevl 50-150
S.R. = Sample Result * = Surrogate fail due to matrix interference (If Marked) spk cone = Spike Concentration Note: LCS, MS, MSD are in control therefore results are in control. %REC = Percent Recovery
ACP %RPO = Acceptable Percent RPO Range
ACP %REC = Acceptable Perce111 Recovery Range
Aoalyzed aod Reviewed By, ~
Final Reviewer: t5J
Enviro - Chem, Inc.
1214 E. Lexington Avenue, Pomona, CA 91766 Tel (909) 590-5905 Fax (909) 590-5907

TOTAL THRESHOLD
DATE RECEIVED:06/17/21
DATE ANALYZED:06/17&18/21
DATE REPORTED:06/23/21
LAB I.D.: 210617-19

LIMIT CONCENTRATION ANALYSIS
UNIT: mg/Kg= MILLIGRAM PER KILOGRAM= PPM
------- --- - - ·-------- --- -------------------------------- ----------------

ELEMENT SAMPLE TTLC STLC EPA
ANALYZED RESULT PQL MDL c,F LIMIT LIMIT METHOD
Antimony(Sb) ND 1.0 0.250 1 500 15 6010B
Arsenic(As) 1. 03 0 . 5 0.248 1 500 5.0 6010B
Barium(Ba) 159 5 . 0 0.143 1 10,000 100 6010B
Beryllium (Be) ND 0 .5 0.180 1 75 0.75 6010B
Cadmium(Cd) ND 0 . 5 0 .119 1 100 1.0 6010B
Chromium Total(Cr) 30 .9 0 .5 0.138 1 2,500 560/5@ 6010B Chromium VI (Cr6) 0.2 0.0156 500 5.0 7196A
Cobalt (Co) 8 . 69 1.0 0.156 1 8,000 80 6010B
Copper(Cu) 10.8 1.0 0.203 1 2,500 25 6010B
Lead(Pb) 4 .13 0.5 0.192 1 1,000 5.0 6010B
Mercury(Hg) 0 . 017 0.01 0.0062 1 20 0.2 7471A
Molybdenum(Mo) ND 5 .0 0.274 1 3,500 350 6010B
Nickel (Ni) 5 . 59 2.5 0.165 1 2,000 20 6010B
Selenium(Se) ND 1.0 0.234 1 100 1.0 6010B
Silver(Ag) ND 1.0 0.414 1 500 5.0 6010B
Thallium (Tl) ND 1.0 0.432 1 700 7.0 6010B
Vanadium(V) 42.8 5.0 0.171 1 2,400 24 6010B
Zinc(Zn) 55.2 0 . 5 0 .131 1 5,000 250 6010B
---------------------------------------------------------------------- COMMENTS OF= Dilution Factor
MDL= Method Detection Limit
PQL = Practical Quantitation Limit
J = Trace Concentration between MDL and PQL
Actual Detection Limit= PQL X OF
ND= Below the Actual Detection Limit or non-detected
TTLC = Total Threshold Limit Concentration
STLC = Soluble Threshold Limit Concentration
@ = Must meet both the STLC Limit at 560 and EPA-TCLP Limit 5 '~ = STLC analysis ·or the- me al is recomm nd0d ( if ma ked) **=Additional Analysis required, please call to discuss (if marked) ***=The concentration exceeds the TTLC Limit, and the sample is defined as hazardous waste as per CCR-TITLE 22 (if marked) -- = Not analyzed/not requeste d /•/
Data Reviewed and Approve d by:_~~U ~_______ _
CAL-OHS ELAP CERTIFICATE No.: 1555
Enviro - Chem, Inc.
1214 E. Lexington Avenue, Pomona, CA 91766 Tel (909) 590-5905 Fax (909) 590-5907

TOTAL THRESHOLD LIMIT
DATE RECEIVED:06/17/21
DATE ANALYZED:06/17&18/21
DATE REPORTED:06/23/21
LAB I.D.: 210617-20

CONCENTRATION ANALYSIS
UNIT: mg/Kg= MILLIGRAM PER KILOGRAM= PPM
------------------------------------------------------------------- ELEMENT SAMPLE TTLC STLC EPA

ANALYZED RESULT PQL MDL DF LIMIT LIMIT METHOD
Antimony(Sb) ND 1.0 0.250 1 500 15 6010B
Arsenic(As) 1. 25 0.5 0.248 1 500 5.0 6010B
Bariurn(Ba) 168 5.0 0.143 1 10,000 100 6010B
Berylliurn(Be) ND 0.5 0.180 1 75 0.75 6010B
Cadrniurn(Cd) ND 0.5 0 .119 1 100 1.0 6010B
Chromium Total(Cr) 32 .2 0.5 0.138 1 2,500 560/5@ 6010B Chromium VI (Cr6) 0.2 0.0156 500 5.0 7196A
Cobalt(Co) 8.55 1.0 0.156 1 8,000 80 6010B
Copper(Cu) 10.7 1.0 0.203 1 2,500 25 6010B
Lead(Pb) 5.74 0.5 0.192 1 1,000 5.0 6010B
Mercury(Hg) 0.016 0.01 0.0062 1 20 0.2 7471A
Molybdenurn(Mo) ND 5.0 0. 2 74 1 3,500 350 6010B
Nickel(Ni) 6.25 2.5 0.165 1 2,000 20 6010B
Seleniurn(Se) ND 1.0 0.234 1 100 1.0 6010B
Silver (Ag) ND 1.0 0.414 1 500 5.0 6010B
Thalli urn (Tl) ND 1.0 0.432 1 700 7.0 6010B
Vanadiurn(V) 41. 9 5.0 0.171 1 2 , 40 0 24 6010B
Zinc(Zn) 53.1 0.5 0.131 1 5,000 250 6010B - -·- ----------------------- ---------------------- ._. __________ __________ , ____ COMMENTS DF = Dilution Factor
MDL= Method Detection Limit
PQL = Practical Quantitation Limit
J = Trace Concentration between MDL and ~QL
Actual Detection Limit= PQL X OF
ND= Below the Actual Detection Limit or non-detected
TTLC = Total Threshold Limit Concentration
STLC = Soluble Threshold Limit Concentration
@=Must mee t both the STLC Limi t at 560 and EPA-TCLP Limit at 5 * = STLC analysis for the metal is recommended (if marked) **=Additional Analysis required, please call to discuss (if marked) ***=The concentration exceeds the TTLC Limit, and the sample is defined as ha zardous waste as per CCR-TITLE 22 (if marked) -- = Not analyzed/not requested // J
Data Reviewe d and Approve d by: .~~------- -
CAL-DHS ELAP CERTIFICATE No.: 1555
Enviro - Chem, Inc.
1214 E. Lexington Avenue, Pomona, CA 91766 Tel (909) 590-5905 Fax (909) 590-5907

TOTAL THRESHOLD LIMIT
DATE RECEIVED:06/17/21
DATE ANALYZED:06/17&18/2i
DATE REPORTED:06/23/21
LAB I.D.: 210617-21

CONCENTRATION ANALYSIS
UNIT: mg/Kg= MILLIGRAM PER KILOGRAM= PPM
-------------------------------- ·----------.... --,_ ------------------------ ELEMENT SAMPLE TTLC STLC EPA ANALYZED RESULT PQL MDL :OF LIMIT LIMIT METHOD
Antimony(Sb) ND 1.0 0.250 1 500 15 6010B
Arsenic (As) 1. 07 0.5 0.248 1 500 5.0 6010B
Barium(Ba) 134 5.0 0.143 1 10,000 100 6010B
Beryllium(Be) ND 0.5 0.180 1 75 0.75 6010B
Cadmium(Cd) ND 0.5 0 .119 1 100 1.0 6010B
Chromium Total(Cr) 29.8 0.5 0 .138 1 2,500 560/5@ 6010B Chromium VI (Cr6) 0.2 0.0156 500 5.0 7196A
Cobalt(Co) 8.31 1.0 0.156 1 8 , 000 80 6010B
Copper(Cu) 11. 6 1.0 0.203 1 2,500 25 6010B
Lead(Pb) 2.61 0.5 0.192 1 1,000 5.0 6010B
Mercury(Hg) 0.016 0.01 0.0062 1 20 0.2 7471A
Molybdenum(Mo) ND 5.0 0.274 1 3,500 350 6010B
Nickel(Ni) 6.15 2.5 0.165 1 2 , 000 20 6010B
Selenium(Se) ND 1.0 0.234 1 100 1.0 6010B
Silver(Ag) ND 1.0 0.414 1 500 5.0 6010B
Thallium (Tl) ND 1.0 0.432 1 700 7.0 6010B
Vanadium(V) 42.0 5.0 0.171 1 2,400 24 6010B
Zinc(Zn) 50.0 0.5 0.131 1 5,000 250 6010B
--- ·------------.------=----- -------------- ------ -----------·-------·- - ---------.,,.

COMMENTS
OF= Dilution Factor
MDL= Method Detection Limit
PQL = Practical Quantitation Limit
J = Trace Concentration between MDL and PQL
Actual Detection Limit= PQL X OF
ND= Below the Actual Detection Limit or non-detected
TTLC = Total Threshold Limit Concentration
STLC = Soluble Threshold Limit Concentration
@=Must meet both the STLC Limit at 560 and EPA-TCLP Limit a· 5 * = STLC analysis for the metal is recommended (if marked) **=Additional Analysis required, please call to discuss (if marked) ***=The concentration exceeds the TTLC Limit, and the sample is defined as hazardous waste as per CCR-TITLE 22 (if marked) -- = Not analyzed/not requested ~
Data Reviewed and Approved by:~/4~~~ 1/ ______ _ _
CAL-OHS ELAP CERTIFICATE No.: 1555
Enviro - Chem, Inc.
1214 E. Lexington Avenue, Pomona, CA 91766 Tel (909) 590-5905 Fax (909) 590-5907

TOTAL THRESHOLD LIMIT
DATE RECEIVED:06/17/21
DATE ANALYZED:06/17&18/21
DATE REPORTED:06/23/21
LAB I.D.: 210617-22

CONCENTRATION ANALYSIS
UNIT: mg/Kg= MILLIGRAM PER KILOGRAM= PPM
-------------------------- ------------------- -------------------- -----

ELEMENT SAMPLE TTLC STLC EPA

ANALYZED RESULT PQL MDL DF LIMIT LIMIT METHOD
Antimony(Sb) ND 1.0 0.250 1 500 15 6010B
Arsenic(As) 1. 41 0.5 0.248 1 500 5.0 6010B
Barium (Ba) 131 5.0 0.143 1 10,000 100 6010B
Beryllium (Be) ND 0 .5 0.180 1 75 0.75 6010B
Cadmium (Cd) ND 0.5 0 .119 1 100 1.0 6010B
Chromium Total(Cr) 30.8 0.5 0 .138 1 2,500 560/5@ 6010B Chromium VI (Cr6) 0.2 0.0156 500 5.0 7196A
Cobalt(Co) 8.37 1.0 0.156 1 8 , 000 00 6010B
Copper(Cu) 10.5 1.0 0. 2 03 1 2,500 25 6010B
Lead(Pb) 3.21 0.5 0.192 1 1,000 5.0 6010B
Mercury(Hg) 0.016 0.01 0.0062 1 2 0 0.2 7471A
Molybdenum(Mo) ND 5.0 0.274 1 3,500 350 6010B
Nickel(Ni) 7.10 2 .5 0.165 1 2 ,00 0 20 6010B
Se lenium(Se) ND 1.0 0.234 1 100 1.0 6010B
Silver(Ag) ND 1.0 0.414 1 500 5.0 6010B
Thallium(Tl) ND 1.0 0.432 1 700 7.0 6010B
Vanadium(V) 38.1 5.0 0.171 1 2,400 24 6010B
Zinc(Zn) 55.0 0.5 0.131 1 5,000 250 6010B
--- ---------------------------------, ·----------,-----·- - - -----_____ __,_ -. ........... ----- COMMENTS OF= Dilution Factor
MDL= Method Detection Limit
PQL = Practical Quantitation Limit
J = Trace Concentration between MDL and PQL
Actual Detection Limit= PQL X OF
ND= Below the Actual Detection Limit or non-detected
TTLC = Total Threshold Limit Concentration
STLC = Soluble Threshold Limit Concentration
@=Must meet both the STLC Limit at 560 and EPA-TCLP Limit at 5 * = STLC analysis for the metal is recommended (if marked) **=Additional Analysis required, please call to discuss (if marked) ***=The concentration exceeds the TTLC Limit, and the sample is defined as hazardous waste as per CCR-TITLE 22 (if marked) -- = Not analyzed/not requested ;!}
Data Reviewed and Approved by: __ l~v __
7 _ _____ _ CAL-OHS ELAP CERTIFICATE No.: 1555
Enviro - Chem, Inc.
1214 E. Lexington Avenue, Pomona, CA 91766 Tel (909) 590-5905 Fax (909) 590-5907

TOTAL THRESHOLD
DATE RECEIVED:06/17/21
DATE ANALYZED:06/17&18/21
DATE REPORTED:06/23/21
LAB I.D.: 210617-23

LIMIT CONCENTRATION ANALYSIS
UNIT: mg/Kg= MILLIGRAM PER KILOGRAM= PPM
---------------------------------------------------------------------- ELEMENT SAMPLE TTLC STLC EPA

ANALYZED RESULT PQL MDL DF LIMIT LIMIT METHOD
Antimony(Sb) ND 1.0 0.250 1 500 15 6010B
Arsenic (As) 1.16 0.5 0.248 1 500 5.0 6010B
Barium(Ba) 135 5.0 0.143 1 10,000 100 6010B
Beryllium(Be) ND 0.5 0.180 1 75 0.75 6010B
Cadmium(Cd) ND 0.5 0 .119 1 100 1.0 6010B
Chromium Total(Cr) 32.2 0.5 0 .138 1 2,500 560/5@ 6010B Chromium VI (Cr6} 0.2 0.0156 500 5.0 7196A
Cobalt(Co) 7.22 1. 0 0.156 1 8,000 80 6010B
Copper(Cu) 9.63 1.0 0.203 1 2 ,500 25 60 101:l
Lead(Pb) 3.06 0.5 0.192 1 1,000 5.0 6010B
Mercury(Hg) 0.014 0.01 0.0062 1 20 0.2 7471A
Molybdenum(Mo) ND 5.0 0.274 1 3,500 350 6010B
Nickel (Ni) 5.62 2.5 0.165 1 2,000 20 6010B
Selenium(Se) ND 1.0 0.234 1 100 1.0 6010B
Silver(Ag) ND 1.0 0.414 1 500 5.0 6010B
Thallium (Tl) ND 1. 0 0.432 1 700 7.0 6010B
Vanadium(V) 34.5 5.0 0.171 1 2,400 24 6010B
Zinc ( Zn) 50.9 0.5 0 .131 1 5,000 250 6010B ------------- --·- -----------.--------,-·-------------·----------·------------

COMMENTS
OF= Dilution Factor
MDL= Method Detecti on Limi t
PQL = Practical Quantitation Limit
J = Trace Concentration between MDL and PQL
Actual Detection Limit= PQL X OF
ND= Below the Actual Detection Limit or non-detected
TTLC = Total Threshold Limit Concentration
STLC = Soluble Threshold Limit Concentration
@=Must meet both the STLC Limit at 560 and EPA-TCLP Limit : 5 * = STLC analysis for the metal is recommended (if marked) **=Additional Analysis required, please call to discuss (if marked) ***=The concentration exceeds the TTLC Limit, and the sample is defined as hazardous waste as per CCR-TITLE 22 (if marked) Not analyzed/not requested
Data Reviewed and Approved by: _ ~t. -~_/ _______ _
CAL-OHS ELAP CERTIFICATE No.: 1555
Enviro - Chem, Inc.
1214 E. Lexington Avenue, Pomona, CA 91766 Tel (909) 590-5905 Fax (909) 590-5907

TOTAL THRESHOLD LIMIT CONCENTRATION ANALYSIS
UNIT: mg/Kg= MILLIGRAM PER KILOGRAM= PPM

ELEMENT SAMPLE TTLC STLC

ANALYZED RESULT PQL MDL OF LIMIT LIMIT
Antimony(Sb) ND 1.0 0.250 1 500 15
Arsenic(As) 1.14 0.5 0.248 1 500 5.0
Barium(Ba) 135 5.0 0.143 1 10,000 100
Beryllium (Be) ND 0.5 0.180 1 75 0.75
Cadmium(Cd) ND 0.5 0 .119 1 100 1.0
Chromium Total(Cr) 31. 2 0.5 0.138 1 2,500 560/5@
Chromium VI (Cr6) 0.2 0.0156 500 5.0
Cobalt(Co) 7.87 1.0 0.156 1 8,000 80
Copper(Cu) 12.6 1.0 0.203 1 2,500 25
Lead(Pb) 9.13 0.5 0.192 1 1,000 5.0
Mercury(Hg) 0.016 0.01 0.0062 1 20 0.2
Molybdenum(Mo) ND 5.0 0. 274 1 3,500 350
Nickel(Ni) 7.56 2.5 0 .165 1 2 , 000 20
Selenium(Se) ND 1.0 0.234 1 100 1.0
Silver(Ag) ND 1.0 0.414 1 500 5.0
Thallium (Tl) ND 1.0 0.432 1 700 7.0
Vanadium(V) 34.2 5.0 0.171 1 2,400 24
Zinc(Zn) 45.9 0.5 0.131 1 5,000 250
EPA
METHOD
6010B
6010B
6010B
6010B
6010B
6010B
7196A
6010B
6010B
6010B
7471A
6010B
6010B
6010B
6010B
6010B
6010B
6010B
------------- - - ------------------·---------·--------------·------·------

COMMENTS
OF= Dilution Factor
MDL= Method Detection Limit
PQL = Practical Quantitation Limit
J = Trace Concentration between MDL and PQL
Actual Detection Limit= PQL X OF
ND= Below the Actual Detection Limit or non-detected
TTLC = Total Threshold Limit Concentration
STLC = Soluble Threshold Limit Concentration
@=Must meet both the STLC Limit at 560 and EPA-TCLP Limit a t 5 * = STLC analysis for the metal is recommended (if marked) **=Additional Analysis required, please call to discuss (if marked) ***=The concentration exceeds the TTLC Limit, and the sample is defined as hazardous waste as per CCR-TITLE 22 (if marked) -- = Not analyzed/not requested ;1/
Data Reviewed and Approved by: _ =rf_~./ _______ _
CAL-OHS ELAP CERTIFICATE No.: 1555
Enviro - Chem, Inc.
1214 E. Lexington Avenue, Pomona, CA 91766 Tel (909) 590-5905 Fax (909) 590-5907

TOTAL THRESHOLD LIMIT
DATE RECEIVED:06/17/21
DATE ANALYZED:06/17&18/21
DATE REPORTED:06/23/21
LAB I.D.: 210617-25

CONCENTRATION ANALYSIS
UNIT: mg/Kg= MILLIGRAM PER KILOGRAM= PPM
----------------------------------------------------------------------

ELEMENT SAMPLE TTLC STLC EPA

ANALYZED RESULT PQL MDL DF LIMIT LIMIT METHOD
Antimony(Sb) ND 1.0 0.250 1 500 15 6010B
Arsenic (As) 2.72 0.5 0.248 1 500 5.0 6010B
Barium(Ba) 306 5.0 0.143 1 10,000 100 6010B
Beryllium(Be) ND 0.5 0.180 1 75 0.75 6010B
Cadmium(Cd) ND 0.5 0 .119 1 lDO 1.0 6010B
Chromium Total(Cr) 36.0 0.5 0 .138 1 2,500 560/5@ 6010B Chromium VI (Cr6) 0.2 0.0156 500 5.0 7196A
Cobalt(Co) 8.92 1.0 0.156 1 8 , 000 80 6010B
Copper(Cu) 15.9 1.0 0.203 1 2 , 00 25 6010B
Lead(Pb) 2.90 0.5 0.192 1 1,000 5.0 6010B
Mercury(Hg) 0. 023 0.01 0.0062 1 20 0.2 7471A
Molybdenum(Mo) ND 5.0 0.274 1 3,500 350 6010B
Nickel(Ni) 5.04 2.5 0.165 1 2 , 000 20 6010B
Selenium(Se) ND 1.0 0.234 1 100 1.0 6010B
Silver(Ag) ND 1.0 0.414 1 500 5.0 6010B
Thallium(Tl) ND 1.0 0.432 1 700 7.0 6010B
Vanadium(V) 50.3 5.0 0.171 1 2 ,4 00 24 6010B
Zinc(Zn) 67.0 0.5 0.131 1 5,000 250 6010B
------------- --------·----------------------------------------------------

COMMENTS
OF= Dilution Factor
MDL= Method Detection Limit
PQL = Practical Quantitation Limit
J = Trace Concentration between MDL and PQL
Actual Detection Limit= PQL X OF
ND= Below the Actual Detection Limit or non-detected
TTLC = Total Threshold Limit Concentration
STLC = Soluble Threshold Limit Concentration
@=Must meet both the STLC Limit at 560 and EPA-TCLP Limit at 5 * = STLC analysis for the metal is recommended (if marked) **=Additional Analysis required, please call to discuss (if marked) ***=The concentration exceeds the TTLC Limit, and the sample is defined as hazardous waste as per CCR-TITLE 22 (if marked) -- = Not analyzed/not requested ·' /
Data Reviewed and Approved by:_~j y ~_______ _
CAL-OHS ELAP CERTIFICATE No.: 1555
Enviro - Chem, Inc.
1214 E. Lexington Avenue, Pomona, CA 91766 Tel (909) 590-5905 Fax (909) 590-5907

TOTAL THRESHOLD
DATE RECEIVED:06/17/21
DATE ANALYZED:06/17&18/21
DATE REPORTED:06/23/21
LAB I.D.: 210617-26

LIMIT CONCENTRATION ANALYSIS
UNIT: mg/Kg= MILLIGRAM PER KILOGRAM= PPM
----------- - - --------- - -------·------------------ - - ------------------- -

ELEMENT SAMPLE TTLC STLC EPA

ANALYZED RESULT PQL MDL DF LIMIT LIMIT METHOD
Antimony(Sb) ND 1.0 0.250 1 500 15 6010B
Arsenic(As) 2 .7 3 0.5 0.248 1 500 5.0 6010B
Barium(Ba) 259 5.0 0.143 1 10,000 100 6010B
Beryllium(Be) ND 0.5 0.180 1 75 0.75 6010B
Cadmium(Cd) ND 0.5 0 .119 1 100 1.0 6010B
Chromium Total(Cr) 33.5 0.5 0.138 1 2,500 560/5@ 6010B
Chromium VI (Cr6) 0.2 0.0156 500 5.0 7196A
Cobalt(Co) 8.03 1.0 0.156 1 8 ,0 00 80 6 0 llJB
Copper(Cu) 14.7 1.0 0.203 1 2 ,500 25 6010B
Lead(Pb) 2 .38 0.5 0.192 1 1,000 5.0 6010B
Mercury(Hg) 0.016 0.01 0.0062 1 20 0.2 7471A
Molybdenum(Mo) ND 5.0 0.274 1 3 ,500 350 6010B
Nickel(Ni) 7.69 2 .5 0.165 1 2 ,000 20 60108
Selenium(Se) ND 1.0 0.234 1 100 1.0 6010B
Silver (Ag) ND 1.0 0.414 1 500 5.0 6010B
Thallium(Tl) ND 1.0 0.432 1 700 7.0 6010B
Vanadium(V) 45.7 5.0 0.171 1 2 ,4 00 24 6010B
Zinc(Zn) 64.8 0.5 0.131 1 5,000 250 6010B
- ---------- ---------------------------- ----------------------------

COMMENTS
OF= Dilution Factor
MDL= Method Detection Limit
PQL = Practical Quantitation Limit
J = Trace Concentration between MDL and PQL
Actual Detection Limit= PQL X OF
ND= Below the Actual Detection Limit or non-detected
TTLC = Total Threshold Limit Concentration
STLC = Soluble Threshold Limit Concentration
@ = Must meet both the STLC Limit at 560 and EPA-TCLP Li mit at 5 * = STLC analysis for the metal is recommended (if marke d) **=Additional Analysis required, please call to discuss (if marked) ***=The concentration exceeds the TTLC Limit, and the sample is defined as hazardous waste as per CCR-TITLE 22 (if marked) Not analyzed/not requested .. /
i,)
Data Reviewed and Approved by: __ Yf~;V _______ _
CAL-OHS ELAP CERTIFICATE No.: 1555
Enviro - Chem, Inc.
1214 E. Lexington Avenue, Pomona, CA 91766 Tel (909) 590-5905 Fax (909) 590-5907

TOTAL THRESHOLD LIMIT
DATE RECEIVED:06/17/21
DATE ANALYZED:06/17&18/21
DATE REPORTED:06/23/21
LAB I.D.: 210617-27

CONCENTRATION ANALYSIS
UNIT: mg/Kg= MILLIGRAM PER KILOGRAM= PPM
·----------------------------------- ----------------------------------- ELEMENT SAMPLE TTLC STLC EPA

ANALYZED RESULT PQL MDL OF LIMIT LIMIT METHOD
Antimony(Sb) ND 1.0 0.250 1 500 15 60108
Arsenic(As) 0.847 0.5 0.248 1 500 5.0 6010B
Barium(Ba) 223 5.0 0.143 1 10,000 100 6010B
Beryllium (Be) ND 0.5 0.180 1 75 0.75 6010B
Cadmium(Cd) ND 0.5 0.119 1 100 1.0 6010B
Chromium Total(Cr) 35.1 0.5 0.138 1 2,500 560/5@ 6010B
Chromium VI (Cr6) 0.2 0.0156 500 5.0 7196A
Cobalt(Co) 10.6 1.0 0.156 1 8,000 BO 6010B
Copper(Cu) 13. 0 1.0 0.203 1 2 , SOD 25 6010B
Lead(Pb) 4.08 0.5 0.192 1 1,000 5.0 6010B
Mercury(Hg) 0.025 0.01 0.0062 1 20 0.2 7471A
Molybdenum(Mo) ND 5.0 0.274 1 3,500 350 6010B
Nickel (Ni) 5.74 2.5 0.165 1 2,000 20 601013
Selenium (Se) ND 1.0 0.234 1 100 1.0 6010B
Silver(Ag) ND 1. 0 0.414 1 500 5.0 6010B
Thallium(Tl) ND 1.0 0.432 1 700 7.0 6010B
Vanadium(V) 55.3 5.0 0.171 1 2,400 24 6010B
Zinc(Zn) 68.9 0.5 0 .131 1 5,000 250 6010B
---------------------------------------------------------------------- COMMENTS OF= Dilution Factor
MDL= Method Detection Limit
PQL = Practical Quantitation Limit
J = Trace Concentration between MDL and PQL
Actual Detection Limit= PQL X OF
ND= Below the Actual Detection Limit or non-detected
TTLC = Total Threshold Limit Concentration
STLC = Soluble Threshold Limit Concentration
@=Must meet both the STLC Limit at 560 and EPA-TCLP Limit at 5 * = STLC analysis for the metal is recommended (if marked) **=Additional Analysis required, please call to discuss (if marked) ***=The concentration exceeds the TTLC Limit, and the sample is defined as hazardous waste as per CCR-TITLE 22 (if marked) -- = Not analyzed/not requested JJ
Data Reviewed and Approved by: __ f_-lW. _/ ______ _ CAL-OHS ELAP CERTIFICATE No.: 1555 Enviro - Chem, Inc.
1214 E. Lexington Avenue, Pomona, CA 91766 Tel (909) 590-5905 Fax (909) 590-5907

TOTAL THRESHOLD LIMIT
DATE RECEIVED:06/17/21
DATE ANALYZED:06/17&18/21
DATE REPORTED:06/23/21
LAB I.D.: 210617-29

CONCENTRATION ANALYSIS
UNIT: mg/Kg= MILLIGRAM PER KILOGRAM= PPM
----------------------------------------------------------------------

ELEMENT SAMPLE TTLC STLC EPA

ANALYZED RESULT PQL MDL DF LIMIT LIMIT METHOD
Antimony(Sb) ND 1.0 0.250 1 500 15 6010B
Arsenic (As) 0.849 0.5 0.248 1 500 5.0 6010B
Barium(Ba) 208 5.0 0.143 1 10,000 100 6010B
Beryllium(Be) ND 0.5 0.180 1 75 0.75 6010B
Cadmium(Cd) ND 0.5 0 .119 1 100 1.0 6010B
Chromium Total(Cr) 32.5 0.5 0 .138 1 2,500 560/5@ 6010B Chromium VI (Cr6) 0.2 0.0156 500 5.0 7196A
Cobalt(Co) 9.85 1.0 0.156 1 8,000 80 6010B
Copper(Cu) 11. 4 1.0 0.203 1 2,500 25 6010B
Lead(Pb) 3.51 0.5 0.192 1 1,000 5.0 6010B
Mercury(Hg) 0.017 0.01 0.0062 1 20 0.2 7471A
Molybdenum(Mo) ND 5.0 0.274 1 3,500 350 6010B
Nickel (Ni) 5.08 2.5 0.165 1 2 ,0 00 20 6010B
Selenium(Se) ND 1.0 0.234 1 100 1.0 6010B
Silver(Ag) ND 1.0 0.414 1 500 5.0 6010B
Thallium (Tl) ND 1.0 0.432 1 700 7.0 6010B
Vanadium(V) 51.1 5.0 0.171 1 2 , 40 0 24 60108
Zinc(Zn) 60.3 0.5 0 .131 1 5,000 250 6010B --------·- -------·---- - ·----·--- ______ ....., __ .... .-..-. ............... _______ -------------- ----

COMMENTS
OF= Dilution Factor
MDL= Method Detection Limit
PQL = Practical Quantitation Limit
J = Trace Concentration between MDL and PQL
Actual Detection Limit= PQL X OF
ND= Below the Actual Detection Limit or non-detected
TTLC = Total Threshold Limit Concentration
STLC = Soluble Threshold Limit Concentration
@=Must meet both the STLC Limit at 560 and EPA-TCLP Limit a 5 * = STLC analysis for the metal is recommended (if marked) **=Additional Analysis required, please call to discuss (if marked) ***=The concentration exceeds the TTLC Limit, and the sample is defined as hazardous waste as per CCR-TITLE 22 (if marked) -- = Not analyzed/not requested 01 j
Data Reviewed and Approved by: _~,~~--- ------
CAL-DHS ELAP CERTIFICATE No.: 1555
Enviro - Chem, Inc.
1214 E. Lexington Avenue, Pomona, CA 91766 Tel (909) 590-5905 Fax (909) 590-5907

TOTAL THRESHOLD LIMIT
DATE RECEIVED:06/17/21
DATE ANALYZED:06/17&18/21
DATE REPORTED:06/23/21
LAB I.D.: 210617-31

CONCENTRATION ANALYSIS
UNIT: mg/Kg= MILLIGRAM PER KILOGRAM= PPM
----------------------------------------------------------------------

ELEMENT SAMPLE TTLC STLC EPA

ANALYZED RESULT PQL MDL DF LIMIT LIMIT METHOD
Antimony(Sb) ND 1.0 0.250 1 500 15 6010B
Arsenic (As) 1.05 0.5 0.248 1 500 5.0 6010B
Barium(Ba) 254 5.0 0.143 1 10,000 100 6010B
Beryllium (Be) ND 0.5 0.180 1 75 0.75 6010B
Cadmium(Cd) ND 0.5 0 .119 1 100 1.0 6010B
Chromium Total(Cr) 37.8 0.5 0.138 1 2,500 560/5@ 6010B
Chromium VI (Cr6) 0.2 0.0156 500 5.0 7196A
Cobalt(Co) 11. 5 1.0 0.156 1 8,000 80 6010B
Copper(Cu) 14.2 1.0 0.203 1 2,500 25 6010B
Lead(Pb) 2.78 0.5 0.192 1 1,000 5.0 6010B
Mercury(Hg) 0.022 0.01 0.0062 1 20 0.2 7471A
Molybdenum(Mo) ND 5.0 0. 274 1 3,500 350 6010B
Nickel (Ni) 6.16 2.5 0.165 1 2 ,000 20 60lOB
Selenium(Se) ND 1.0 0.234 1 100 1.0 6010B
Silver (Ag) ND 1.0 0.414 1 500 5.0 6010B
Thallium(Tl) ND 1.0 0.432 1 700 7.0 6010B
Vanadium(V) 60.2 5.0 0.171 1 2,400 24 6010B
Zinc ( Zn) 72.4 0.5 0.131 1 5,000 250 6010B ------------------------------------------~.__... ______________________

COMMENTS
OF= Dilution Factor
MDL= Method Detection Limit
PQL = Practical Quantitation Limit
J = Trace Concentration between MDL and PQL
Actual Detection Limit= PQL X OF
ND= Below the Actual Detection Limit or non-detected
TTLC = Total Threshold Limit Concentration
STLC = Soluble Threshold Limit Concentration
@=Must meet both the STLC Limit at 560 and EPA-TCLP Limit at 5 * = STLC analysis for the metal is recommended (if marked) **=Additional Analysis required, please call to discuss (if marked) ***=The concentration exceeds the TTLC Limit, and the sample is defined as hazardous waste as per CCR-TITLE 22 (if marked) -- = Not analyzed/not requested A J '/
Data Reviewed and Approved by:~t~f-~_,_, _______ _
CAL-OHS ELAP CERTIFICATE No.: 1555
Enviro - Chem, Inc.
1214 E. Lexington Avenue, Pomona, CA 91766 Tel (909) 590-5905 Fax (909) 590-5907

TOTAL THRESHOLD LIMIT
DATE RECEIVED:06/17/21
DATE ANALYZED:06/17&18/21
DATE REPORTED:06/23/21
LA I.D.: 210617-33

CONCENTRATION ANALYSIS
UNIT: mg/Kg= MILLIGRAM PER KILOGRAM= PPM
---------------------------------------------------------------------- ELEMENT SAMPLE TTLC STLC EPA

ANALYZED RESULT PQL MDL DF LIMIT LIMIT METHOD
Antimony(Sb) ND 1.0 0.250 1 500 15 6010B
Arsenic (As) 0.633 0.5 0.248 1 500 5.0 6010B
Barium(Ba) 199 5.0 0.143 1 10,000 100 6010B
Beryllium (Be) ND 0.5 0.180 1 75 0.75 6010B
Cadmium(Cd) ND 0.5 0 .119 1 100 1.0 6010B
Chromium Total(Cr) 30.5 0.5 0.138 1 2,500 560/5@ 6010B
Chromium VI (Cr6) 0.2 0.0156 500 5.0 7196A
Cobalt(Co) 9.37 1.0 0.156 1 8 , 000 80 6010B
Copper(Cu) 11. 0 1.0 0.203 1 2, 500 25 6010B
Lead(Pb) 3.06 0.5 0.192 1 1,000 5.0 6010B
Mercury(Hg) 0.017 0.01 0.0062 1 20 0.2 7471A
Molybdenum(Mo) ND 5.0 0.274 1 3,500 350 6010B
Nickel(Ni) 4.76 2.5 0.165 1 2,000 20 6010B
Selenium(Se) ND 1.0 0.234 1 100 1.0 6010B
Silver(Ag) ND 1.0 0.414 1 500 5.0 6010B
Thallium(Tl) ND 1.0 0.432 1 700 7.0 6010B
Vanadium(V) 50.1 5.0 0.171 1 2,400 24 6010B
Zinc(Zn) 58.0 0.5 0.131 1 5,000 250 6010B
----------------~--~-----------------------------------------~---------~- COMMENTS OF= Dilution Factor
MDL= Method Detection Limit
PQL = Practical Quantitation Limit
J = Trace Concentration between MDL and PQL
Actual Detection Limit= PQL X OF
ND= Below the Actual Detection Limit or non-detected
TTLC = Total Threshold Limit Concentration
STLC = Soluble Threshold Limit Concentration
@=Must meet both the STLC Limit at 560 and EPA-TCLP Limit at 5 * = STLC analysis for the metal is recommended (if marked) **=Additional Analysis required, please call to discuss (if marked) ***=The concentration exceeds the TTLC Limit, and the sample is defined as hazardous waste as per CCR-TITLE 22 (if marked) -- = Not analyzed/not requested //
Data Reviewed and Approved by: __ 4, ________ _ CAL-OHS ELAP CERTIFICATE No.: 1555 Enviro - Chem, Inc.
1214 E. Lexington Avenue, Pomona, CA 91766 Tel (909) 590-5905 Fax (909) 590-5907

TOTAL THRESHOLD LIMIT CONCENTRATION ANALYSIS
UNIT: mg/Kg= MILLIGRAM PER KILOGRAM= PPM

ELEMENT SAMPLE
RESULT

TTLC STLC

ANALYZED
Antimony(Sb)
Arsenic(As)
Barium(Ba)
Beryllium(Be)
Cadmium(Cd)
Chromium Total(Cr)
Chromium VI (Cr6)
Cobalt(Co)
Copper(Cu)
Lead(Pb)
Mercury(Hg)
Molybdenum(Mo)
Nickel (Ni)
Selenium(Se)
Silver(Ag)
Thallium(Tl)
Vanadium(V)
Zinc(Zn)

COMMENTS
DF = Dilution Factor
NO
0 . 980
216
ND
ND

33.4 10.1

13. 0

3.64 0.020
ND

5.82 ND
ND
ND

53.2 72. 5
MDL= Method Detection Limit
PQL = Practical Quantitation Limit
PQL

1.0 0.5

5.0 0.5

0.5 0.5

0.2 1.0

1.0 0.5

0.01 5.0

2.5 1.0

1.0 1.0

5.0 0.5
MDL

0.250

0.248

0.143

0.180
0 .119
0 .138

0.0156

0.156

0.203

0.192

0.0062

0.274

0.165

0.234

0.414

0.432
0 .171

0.131
J = Trace Concentration between MDL and PQL
Actual Detection Limit= PQL X OF
DF
1 1
LIMIT
500
500
110,000
1 75
1 100
1 1
1 1
1 1
1 1
1 1
1 1
2,500
500
8,000
2,500
1,000
20 3,500
2,000
100
500
700
2 ,400
5,000
ND= Below the Actual Detection Limit or non-detected
TTLC = Total Threshold Limit Concentration
STLC = Soluble Threshold Limit Concentr ation
LIMIT
15 5.0
100

0.75 1.0
560/5@

5.0 80
25 5.0

0.2 350
20 1.0

5.0 7.0
24 250
@=Must meet both the STLC Limit at 560 and EPA-TCLP Limit at 5 EPA
METHOD
6010B
60108
6010B
60108
6010B
6010B
7196A
60108
6010B
6010B
7471A
6010B
6010B
60108
6010B
6010B
6010B
6010B
* = STLC analysis for the metal is recommended (if marked) **=Additional Analysis required, please call to discuss (if marked) ***=The concentration exceeds the TTLC Limit, and the sample is defined as hazardous waste as per CCR-TITLE 22 (if marked) -- = Not analyzed/not requested ;J /
Data Reviewed and Approved by: _~tV~t _______ _ CAL-OHS ELAP CERTIFICATE No.: 1555 Enviro - Chem, Inc.
1214 E. Lexington Avenue, Pomona, CA 91766 Tel (909) 590-5905 Fax (909) 590-5907

TOTAL THRESHOLD LIMIT
DATE RECEIVED:06/17/21
DATE ANALYZED:06/1 7&18/21
DATE REPORTED : 06/ 2 3/2 1
LAB I . D.: 210617 - 37

CONCENTRATION ANALYSIS
UNIT: mg/Kg= MILLIGRAM PER KILOGRAM= PPM
------------------- ------------ ·-------- ----------- ------------·--- - ·---

ELEMENT SAMPLE TTLC STLC EPA

ANALYZED RESULT PQL MDL DF LIMIT LIMI T METHOD
Antimony(Sb) ND 1.0 0.250 1 500 15 6010B
Arsenic (As) 0 . 748 0 . 5 0 . 248 1 500 5 . 0 6010B
Barium(Ba) 239 5.0 0 . 143 1 10,000 100 6010B
Beryllium(Be) ND 0 . 5 0 . 180 1 75 0 . 75 6010B
Cadmium(Cd) ND 0.5 0 . 119 1 100 1.0 6010B
Chromi um Total(Cr) 3 4.1 0.5 0 . 138 1 2 , 500 560/5@ 6010B Chromium VI (Cr6) 0 . 2 0.0156 500 5 . 0 7 196A
Cobalt(Co) 10 . 6 1.0 0.156 1 8,000 80 6010B
Copper(Cu) 12 . 8 1.0 0.203 1 2,500 25 6010B
Lead(Pb) 2 . 58 0.5 0.192 1 1,000 5 , 0 60 10B
Mercury (Hg) 0 . 016 0.01 0.0062 1 20 0.2 7471A
Molybdenum(Mo) ND 5.0 0.274 1 3,500 350 6010B
Nickel(Ni) 5.27 2 .5 0 . 165 1 2 , 000 20 6010-B
Selenium(Se) ND 1.0 0 . 234 1 100 1.0 6010B
Silver(Ag) ND 1.0 0 . 414 1 500 5 . 0 6010B
Thallium (Tl) ND 1.0 0 . 432 1 700 7 . 0 6010B
Vanadi um(V) 57. 2 5 . 0 0 . 171 1 2,400 24 60108
Zinc(Zn) 70.7 0.5 0 . 131 1 5,000 250 6010B
---- - --------~----------~~------ ----------------- - -------- ----- - ----

COMMENTS
OF= Diluti on Factor
MDL= Method Dete ction Limit
PQL = Practical Quantitation Limit
J = Trace Conce ntration between MDL and PQL
Actual Detection Limit= PQL X OF
ND = Below the Actual Detection Limit o r non-detected
TTLC = Total Thre shold Limit Conce ntration
STLC = Soluble Threshold Limit Concentration
@ = Must meet both t he STLC Limit at 560 and EPA-TCLP Li mi t at 5 * = STLC analysis for the metal i s recommended (if marked) ** = Additional Analysis required, please c all to d i scuss (if marked) ***=The conce ntration exceeds the TTLC Limit, and the sample is defined as hazardous waste as per CCR-TITLE 22 (if marke d) -- = Not analyzed/not r e quested
Data Reviewed and Approved by:_t~{,J ________ _
CAL-OHS ELAP CERTIFICATE No.: 1555
Enviro - Chem, Inc.
1214 E. Lexington Avenue, Pomona, CA 91766 Tel (909) 590-5905 Fax (909) 590-5907

TOTAL THRESHOLD
DATE RECEIVED:06/17/ 2 1
DATE ANALYZED:06/17&18/21
DATE REPORTED:06/23/21
LAB I.D.: 210617-39

LIMIT CONCENTRATION ANALYSIS
UNIT: mg/Kg= MILLIGRAM PER KILOGRAM= PPM
--------------------------------------------------------------------- ELEMENT SAMPLE TTLC STLC EPA

ANALYZED RESULT PQL MDL DF LIMIT LIMIT METHOD
Antimony(Sb) ND 1.0 0.250 1 500 15 6010B
Arsenic (As) 0 .805 0.5 0.248 1 500 5.0 6010B
Barium(Ba) 199 5.0 0.143 1 10,000 100 6010B
Beryllium(Be) ND 0.5 0.180 1 75 0.75 6010B
Cadmium(Cd) ND 0.5 0 .119 1 100 1.0 6010B
Chromium Total(Cr) 31. 5 0.5 0.138 1 2,500 560/5@ 6010B Chromium VI (Cr6) 0.2 0.0156 500 5.0 7196A
Cobalt(Co) 9.77 1.0 0.156 1 8,000 80 6010B
Copper(Cu) 11. 4 1.0 0.203 1 2,500 25 6010B
Lead(Pb) 2.64 0.5 0.192 1 1,000 5.0 6010B
Mercury(Hg) 0.016 0.01 0.0062 1 20 0.2 7471A
Molybdenum(Mo) ND 5.0 0.274 1 3,500 350 6010B
Nickel(Ni) 4.71 2.5 0.165 1 2,000 20 6010B
Selenium(Se) ND 1.0 0.234 1 100 1.0 6010B
Silve r(Ag) ND 1.0 0.414 1 500 5.0 6010B
Thallium(Tl ) ND 1.0 0.432 1 700 7.0 6010B
Vanadium(V) 53.5 5.0 0.171 1 2 , 400 24 6010B
Zinc(Zn) 60.3 0.5 0.131 1 5,000 250 6010B
- -- - ------------------------ --- -------------------------------------------

COMMENTS
OF= Dilution Factor
MDL= Method Detection Limit
PQL = Practical Quantitation Limit
J = Trace Concentration between MDL and PQL
Actual Detection Limit= PQL X OF
ND= Below the Actual Detection Limit or non-detected
TTLC = Total Threshold Limit Concentration
STLC = Soluble Threshold Limit Concentration
@=Must meet both the STLC Limit at 560 and EPA-TCLP Limit a t 5 * = STLC analysis for the metal is recomme nded (if marked) **=Additional Analysis required, please call to discuss (if marked) ***=The concentration exceeds the TTLC Limit, and the sample is defined as hazardous waste as per CCR-TITLE 22 (if marked) -- = Not analyz ed/not r equested J
i1 Data Reviewed and Approved by: _....,__ _______ _
CAL-OHS ELAP CERTIFICATE No.: 1555
Enviro - Chem, Inc.
1214 E. Lexington Avenue, Pomona, CA 91766 Tel (909) 590-5905 Fax (909) 590-5907

TOTAL THRESHOLD LIMIT
DATE RECEIVED:06/17/21
DATE ANALYZED:06/17&18/21
DATE REPORTED:06/23/21
LAB I.D.: 210617-41

CONCENTRATION ANALYSIS
UNIT: mg/Kg= MILLIGRAM PER KILOGRAM= PPM
---------------------------------------------------------------------- ELEMENT SAMPLE TTLC STLC EPA

ANALYZED RESULT PQL MDL OF LIMIT LIMIT METHOD
Antimony(Sb) ND 1.0 0.250 1 500 15 6010B
Arsenic (As) 1.19 0.5 0.248 1 500 5.0 6010B
Barium(Ba) 81. 1 5.0 0.143 1 10,000 100 6010B
Beryllium(Be) ND 0.5 0.180 1 75 0.75 6010B
Cadmium(Cd) ND 0.5 0.119 1 100 1.0 6010B
Chromium Total(Cr) 20.3 0.5 0.138 1 2,500 560/5@ 6010B
Chromium VI (Cr6) 0.2 0.0156 500 5.0 7196A
Cobalt(Co) 5. 77 1.0 0.156 1 8 , 000 BO 6010B
Copper(Cu) 8.33 1.0 0.203 1 2,500 25 6010B
Lead(Pb) 3.66 0.5 0.192 1 1,000 5.0 6010B
Mercury(Hg) 0.014 0.01 0.0062 1 20 0.2 7471A
Molybdenum(Mo) ND 5.0 0.274 1 3,500 350 6010B
Nickel(Ni) 4.51 2. 5- 0.165 1 2,000 20 6010B
Selenium(Se) ND 1.0 0.234 1 100 1.0 6010B
Silver(Ag) ND 1.0 0.414 1 500 5.0 6010B
Thallium(Tl) ND 1.0 0.432 1 700 7.0 6010B
Vanadium(V) 30.2 5.0 0.171 1 2 , 400 24 60 10B
Zinc(Zn) 44.3 0.5 0.131 1 5,000 250 6010B --------- ·----___ , ___ , ______________ ---·----- ----- ----·------------------- COMMENTS DF = Dilution Factor
MDL= Method Detection Limit
PQL = Practical Quantitation Limit
J = Trace Concentration between MDL and PQL
Actual Detection Limit= PQL X OF
N_D = Below the Actual Detection Limit or non-detected
TTLC = Total Threshold Limit Concentration
STLC = So l uble Th r eshold Limit Concentrati on
@=Must meet both the STLC Limit at 560 and EPA-TCLP Limit at 5 * = STLC analysis for the metal is recommended (if marked) **=Additional Analysis required, please call to discuss (if marked) ***=The concentration exceeds the TTLC Limit, and the sample is defined as hazardous waste as per CCR-TITLE 22 (if marked) -- ~ Not analyzed/not requested ti
Data Reviewed and Approved by: __ /J. ~_/ ______ _ CAL-OHS ELAP CERTIFICATE No.: 1555 Enviro - Chem, Inc.
1214 E. Lexington Avenue, Pomona, CA 91766 Tel (909) 590-5905 Fax (909) 590-5907

TOTAL THRESHOLD
DATE RECEIVED:06/17/21
DATE ANALYZED:06l17&18l21
DATE REPORTED:06/23/21
LAB I.D.: 210617-43

LIMIT CONCENTRATION ANALYSIS
UNIT: mg/Kg= MILLIGRAM PER KILOGRAM= PPM
------------------------------------------------------------------~--- ELEMENT SAMPLE TTLC STLC EPA

ANALYZED RESULT PQL MDL DF LIMIT LIMIT METHOD
Antimony(Sb) ND 1.0 0.250 1 500 15 6010B
Arsenic (As) 1.01 0.5 0.248 1 500 5.0 6010B
Barium(Ba) 81. 4 5.0 0.143 1 10,000 100 6010B
Beryllium(Be) ND 0.5 0.180 1 75 0.75 6010B
Cadmium(Cd) ND 0.5 0 .119 1 100 1.0 6010B
Chromium Total(Cr) 18.8 0.5 0.138 1 2,500 560/5@ 6010B
Chromium VI (Cr6) 0.2 0.0156 500 5.0 7196A
Cobalt(Co) 5.10 1.0 0.156 1 a·, ooo 8U 60l.DB
Copper(Cu) 7.73 1.0 0.203 1 2,500 25 6010B
Lead(Pb) 6.14 0.5 0.192 1 1,000 5.0 6010B
Mercury(Hg) 0.023 0.01 0.0062 1 20 0.2 7471A
Molybdenum(Mo) ND 5.0 0.274 1 3,500 350 6010B
Nickel(Ni) 3.87 2.5 0.165 1 2 , 000 20 6010B
Selenium(Se) ND 1.0 0.234 1 100 1.0 601-0B
Silver (Ag) ND 1.0 0.414 1 500 5.0 6010B
Thallium(Tl) ND 1.0 0.432 1 700 7.0 6010B
Vanadium (V) 27.5 5.0 0.171 1 2 f 40-0 24 6010B
Zinc(Zn) 54.3 0.5 0.131 1 5,000 250 6010B
- -------------- __ , _____ --·---------------------------------------------- COMMENTS OF= Dilution Factor
MDL= Method Detection Limit
PQL = Practical Quantitation Limit
J = Trace Concentration between MDL and PQL
Actual Detection Limit= PQL X OF
ND= Below the Actual Detection Limit or non-detected
TTLC = Total Threshold Limit Concentration
STLC = Soluble Threshold Limit Concentration
@=Must meet both the STLC Limit at 560 and EPA-TCLP Limit at 5 * = STLC analysis for the metal is recommended (if marked) **=Additional Analysis required, please call to discuss (if marked) ***=The concentration exceeds the TTLC Limit, and the sample is defined as hazardous waste as per CCR-TITLE 22 (if marked) -- = Not analyzed/not requested ;/ /
Data Reviewed and Approved by: _~L~/_, _______ _
CAL-OHS ELAP CERTIFICATE No.: 1555
Enviro - Chem, Inc.
1214 E. Lexington Avenue, Pomona, CA 91766 Tel (909) 590-5905 Fax (909) 590-5907

TOTAL THRESHOLD
DATE RECEIVED:06/17/21
DATE ANALYZED:06/17&18/21
DATE REPORTED:06/23/21
LAB I.D.: 210617-45

LIMIT CONCENTRATION ANALYSIS
UNIT: mg/Kg= MILLIGRAM PER KILOGRAM= PPM
- ---·-----·-------·------------------------------·---------------·-------

ELEMENT SAMPLE TTLC STLC EPA

ANALYZED RESULT PQL MDL OF LIMIT LIMIT METHOD
Antimony(Sb) ND 1.0 0.250 1 500 15 6010B
Arsenic (As) 0.702 0.5 0.248 1 500 5.0 6010B
Barium(Ba) 152 5.0 0.143 1 10,000 100 6010B
Beryllium(Be) ND 0.5 0.180 1 75 0.75 6010B
Cadmium(Cd) ND 0.5 0 .119 1 100 1.0 6010B
Chromium Total(Cr) 23.9 0.5 0.138 1 2,500 560/5@ 6010B
Chromium VI (Cr6) 0.2 0.0156 500 5.0 7196A
Cobalt(Co) 7.08 1.0 0.156 1 8,000 80 6010B
Copper (Cu) 9.88 1.0 0.203 1 2,500 25 6010B
Lead(Pb) 6.07 0.5 0.192 1 1,000 5.0 6010B
Mercury(Hg) 0.025 0.01 0.0062 1 20 0.2 7471A
Molybdenum(Mo) ND 5.0 0.274 1 3,500 350 6010B
Nickel(Ni) 3.61 2.5 0.165 1 2,000 20 6010B
Selenium(Se) ND 1.0 0.234 1 100 1.0 6010B
Silver(Ag) ND 1.0 0.414 1 500 5.0 6010B
Thallium(Tl) ND 1.0 0.432 1 700 7.0 6010B
Vanadium(V) 38.7 5.0 0.171 1 2 ,400 2, 1 60 1 0B
Zinc(Zn) 67.4 0.5 0 .131 1 5,000 250 6010B
--------------------------------·------·- ·------·-----------------------

COMMENTS
OF= Dilution Factor
MDL= Method Detection Limit
PQL = Practical Quantitation Limit
J = Trace Concentration between MDL and PQL
Actual Detection Limit= PQL X OF
ND= Below the Actual Detection Limit or non-detected
TTLC = Total Threshold Limit Concentration
STLC = Soluble Threshold Limit Concentration
@=Must meet both the STLC Limit at 560 and EPA-TCLP Limit at 5 * = STLC analysis for the metal is recommended (if marked) **=Additional Analysis required, please call to discuss (if marked) ***=The concentration exceeds the TTLC Limit, and the sample is defined as hazardous waste as per CCR-TITLE 22 (if marked) -- = Not analyzed/not requested 1/
Data Reviewed and Approved by: _~4-_______ _
CAL-DHS ELAP CERTIFICATE No.: 1555
Enviro - Chem, Inc.
1214 E. Lexington Avenue, Pomona, CA 91766 Tel (909) 590-5905 Fax (909) 590-5907

TOTAL THRESHOLD LIMIT
DATE RECEIVED : 06/17/21
DATE ANALYZED : 06/17&18/21
DATE REPORTED:06/23/21
LAB I . D.: 210617-47

CONCENTRATION ANALYSIS
UNIT: mg/Kg= MILLIGRAM PER KILOGRAM= PPM
---- -----·------------------------------------------------------------- ELEMENT SAMPLE TTLC STLC EPA

ANALYZED RESULT PQL MDL DF LIMIT LIMIT METHOD
Antimony (Sb) ND 1. 0 0 . 250 1 5 00 15 6010B
Arsenic (As) 1. 01 0 . 5 0 . 248 1 500 5 . 0 6010B
Barium(Ba) 89.9 5 . 0 0 . 143 1 10 , 000 100 6010B
Beryllium (Be) ND 0 . 5 0.180 1 7 5 0 . 75 6010B
Cadmium(Cd) ND 0 . 5 0 . 119 1 100 1.0 6010B
Chromium Total(Cr) 22 .0 0 .5 0 . 138 1 2 , 50 0 560/5@ 6010B Chromium VI (Cr6) 0 .2 0.0156 50 0 5.0 7196A
Cobalt (Co) 5 . 96 1.0 0.156 1 8 , 000 80 6010B
Copper(Cu) 9.42 1.0 0 . 2 03 1 2 , 500 25 6010B
Lead(Pb) 5 . 25 0.5 0 . 192 1 1,000 5 . 0 6010B
Mercury( Hg) 0 . 023 0 .01 0 . 0062 1 20 0 . 2 7471A
Molybdenum (Mo ) ND 5 .0 0 . 274 1 3 , 50 0 350 6010B
Nickel(Ni ) 5.02 2 .5 0 . 165 1 2 , 000 20 6010B
Sel e nium(Se) ND 1.0 0. 2 34 1 100 1.0 6010B
Silver(Ag) ND 1.0 0.414 1 500 5.0 6010B
Thallium(Tl) ND 1. 0 0 . 432 1 700 7.0 6010B
Vanadi um(V) 31. 4 5 .0 0.171 1 :2 1 4 uo 24 60105
Zinc(Zn ) 54 . 9 0 . 5 0 .131 1 5,000 250 6010B
-----..._ ___ ---- ·-------- - ---------------·--------------------____ ...... __ -~----

COMMENTS
DF = Dilution Factor
MDL= Me t hod Detection Limit
PQL = Practical Quantitation Limit
J = Trace Concentration between MDL and PQL
Actual Detection Limit= PQL X DF
ND= Below the Actual Detection Limit or non-detected
TTLC = To tal Threshold Limit Concentr ation
STLC = Soluble Threshold Limit Concentration
@=Must me e t both the STLC Limit at 560 and EPA-TCLP Limit a t 5 * = STLC analysis for the metal is recomme nded (if marked) **=Additional Analysis required, please call to d i scuss (if marked) ***=The concentration exceeds the TTLC Limit, and the sample is defined as hazardous waste as per CCR-TITLE 22 (if marked) -- = Not analyzed/not requested .~/
Data Rev i ewed and App r ove d by:----';?~{/1 ________ _ CAL-OHS ELAP CERTIFICATE No . : 1555
Enviro - Chem, Inc.
1214 E. Lexington Avenue, Pomona, CA 91766 Tel (909) 590-5905 Fax (909) 590-5907

METHOD BLANK REPORT
CUSTOMER: Leighton & Associates, Inc.
10532 Acacia, Suite B-6, Rancho Cucamonga, CA 91730
Tel: (909)484-2205 E-Mail: [email protected]
PROJECT: 13177.001
MATRIX:SOIL
SAMPLING DATE:06/16/21
REPORT TO:Mr. ROBERT HANSEN
DATE RECEIVED:06/17/21
DATE ANALYZED:06/17&18/21
DATE REPORTED:06/23/21
METHOD BLANK FOR LAB I.D.: 210617-19 THROUGH -27,
- 2 9 , - 3 1 , - 33 , - 35 , - 37 , - 39 , - 41 , - 43 , - 45 , - 47

TOTAL THRESHOLD LIMIT CONCENTRATION ANALYSIS
UNIT: mg/Kg= MILLIGRAM PER KILOGRAM= PPM

ELEMENT SAMPLE

ANALYZED RESULT PQL MDL
Antimony(Sb ) ND 1.0 0.250
Arsenic (As) ND 0.5 0.248
Barium(Ba) ND 5.0 0.143
Beryllium (Be) ND 0.5 0.180
Cadmium(Cd) ND 0.5 0 .119
Chromium Total(Cr) ND 0.5 0.138
Chromium VI (Cr6) 0.2 0.0156
Cobalt(Co) ND 1.0 0.156
Copper(Cu) ND 1.0 0.203
Lead(Pb) ND 0.5 0.192
Mercury(Hg) ND 0.01 0.0062
Molybdenum(Mo) ND 5.0 0.274
Nickel(Ni) ND 2.5 0.165
Selenium(Se) ND 1.0 0.234
Silver(Ag) ND 1.0 0.414
Thallium (Tl) ND 1.0 0.432
Vanadium(V) ND 5.0 0.171
Zinc(Zn) ND 0.5 0 .131

COMMENTS
OF= Dilution Factor
MDL= Method Detection Limit
PQL = Practical Quantitation Limit
J = Trace Concentration between MDL and PQL
Actual Detection Limit= PQL X OF
TTLC

OF LIMIT
1 500
1 500
1 10,000
1 75
1 100
1 2,500
500
1 8,000
1 2,500
1 1,000
1 20
1 3,500
1 2,000
1 100
1 500
1 700
1 2 , ~ 0 0
1 5,000
ND= Below the Actual Detection Limit or non-detected
TTLC = Total Threshold Limit Concentration
STLC = Soluble Threshold Limit Concentration
STLC
LIMIT
15 5.0
100

0.75 1.0
560/5@

5.0 80
25 5.0

0.2 350
20 1.0

5.0 7.0
24 250
@=Must meet both the STLC Limit at 560 and EPA-TCLP Limit at 5 EPA
METHOD
6010B
6010B
6010B
6010B
6010B
6010B
7196A
6010B
6010B
6010B
7471A
6010B
6010B
6010B
6010B
6010B
60 10B
6010B
* = STLC analysis for the metal is recommended (if marked) **=Additional Analysis required, please call to discuss (if marked) ***=The concentration exceeds the TTLC Limit, and the sample is defined as hazardous waste as per CCR-TITLE 22 (if marked) -- = Not analyzed/not requested J/
Data Reviewed and Approved by:_~fi/~,f/_,, _ ______ _
CAL-OHS ELAP CERTIFICATE No.: 1555
Qfl/QC _for :Jvletals ,Jina{ysis--TTLC--SOLID/SOIL MATRIX Matrix SQike/ Matrix S12ike Du12licate/ LCS :

Metals Analysis Date : 6/18/2021
Mercury Analysis Date: 6/17/2021 Unit : mg/Kg_(e.e.ml I Analysis Spk.Sample LCS LCS LCS Sample Spike MS %Rec MSD %Rec %RPO ID CONC. %Rec. STATUS Result Cone. MS MSD I
Antimony (Sb) 210617-19 50.0 90 PASS a 50 40.1 80% 42.1 84% 5% Arsenic (As) 210617-19 50.0 101 PASS 1.03 50 I 40.1 78% 42.0 82% 5% I Barium (Ba) 210617-19 50.0 103 PASS 159 50 I 165 12%* 166 14%* 15% Beryllium (Be) 210617-19 50.0 106 I PASS I Cl 50 42.4 85% 44.6 89% 5% ~ I Cadmium (Cd) 210617-19 50.0 108 PASS I 0 50 40.9 82% 42.7 85% 4% Chromium (Cr) 210617-19 50.0 106 PASS 30.9 50 68.1 74%* 70.0 78% 5% I Cobalt (Co) 210617-19 50.0 '.103 PASS 8.69 50 45.5 74%* 47.2 77% 5% Copper (Cu) 210617-19 50.0 100 \ PASS 10.8 50 53.5 85% 55.8 90% 5% Lead (Pb) 210617-19 50.0 107 PASS 4.13 50 I 64.8 121% 66.4 125% 3% I Mercury (Hg) 210617-18 0.125 98 I PASS 0 0.125 0.103 82% 0.109 87% 6% i Molybdenum(Mo) 210617-19 50.0 103 PASS 0 50 41.2 82% 43.0 86% 4% I I Nickel (Ni) i 210617-19 50.0 I 100 PASS I 5.59 50 42.8 74%* 44.4 78% 4% I Selenium (Se) 210617-19 50.0 103 PASS 0 50 38.0 76% 39.5 79% 4% S·ilver (Ag) 210617-19 I 5.0 I 106 P'ASS l 0 5.0 4.27 85% 4.50 90% 5% Thallium (Tl) 210617-19 50.0 I 109 PASS I 0 50 32.8 66%* 38.4 77% 16% I Vanadium (V) 210617-19 50.0 102 PASS :1 42.8 50 80.7 72%* 82.6 73%* 1% I 78% 81 % I Zinc (Zn) 210617-19 50.0 112 PASS I 55.2 50 94.4 95.9 4% ANALYST:
/ - - *=Fail due to matrix interference 8 Note:LCS is in control therefore results are in control FINAL REVIEWER:

Enviro - Chem, Inc.
1214 E. Lexington Avenue, Pomona, CA 91766 Tel (909) 590-5905 Fax (909) 590-5907

TOTAL THRESHOLD LIMIT
DATE RECEIVED:06/17/21
DATE ANALYZED:06/17&21/21
DATE REPORTED:06/23/21
LAB I . D . : 2 1 0 61 7 - 4 9

CONCENTRATION ANALYSIS
UNIT: mg/Kg= MILLIGRAM PER KILOGRAM= PPM
----------------------------------------------------------------------

ELEMENT SAMPLE TTLC STLC EPA

ANALYZED RESULT PQL MDL DF LIMIT LIMIT METHOD
Antimony(Sb) ND 1.0 0.250 1 500 15 6010B
Arsenic(As) 1. 18 0.5 0.248 1 500 5.0 6010B
Barium(Ba) 98.2 5.0 0.143 1 10,000 100 6010B
Beryllium (Be) ND 0.5 0.180 1 75 0.75 6010B
Cadmium(Cd) ND 0.5 0.119 1 100 1.0 6010B
Chromium Total(Cr) 23.8 0.5 0.138 1 2,500 560/5@ 6010B
Chromium VI (Cr6) 0.2 0.0156 500 5.0 7196A
Cobalt(Co) 6.91 1.0 0.156 1 8,000 80 6010B
Copper(Cu) 10.4 1.0 0.203 1 2,500 25 6010B
Lead(Pb) 5.47 0.5 0 .192 1 J, 000 5.0 6010B
Mercury(Hg) 0.019 0.01 0.0062 1 20 0.2 7471A
Molybdenum(Mo) ND 5.0 0.274 1 3,500 350 6010B
Nickel (Ni) 5.16 2.5 0.165 1 2 , ODO 20 60l0B
Selenium(Se) ND 1.0 0.234 1 100 1.0 6010B
Silver(Ag) ND 1.0 0.414 1 500 5.0 6010B
Thallium (Tl) ND 1.0 0.432 1 700 7.0 6010B
Vanadium(V) 30.9 5.0 0.171 1 2,400 24 6010B
Zinc(Zn) 52.5 0.5 0 .131 1 5,000 250 6010B
----·------·----------·-------- --------------------------------------

COMMENTS
OF= Dilution Factor
MDL= Method Detection Lim.it
PQL = Practical Quantitation Limit
J = Trace Concentration between MDL and PQL
Actual Detection Limit= PQL X OF
ND= Below the Actual Detection Limit or non-detected
TTLC = Total Threshold Limit Concentration
STLC = Soluble Threshold Limit Concentration
@=Must meet both the STLC Limit at 560 and EPA-TCLP Limit at 5 * = STLC analysis for the metal is recommended (if marked) **=Additional Analysis required, please call to discuss (if marked) ***=The concentration exceeds the TTLC Limit, and the sample is defined as hazardous waste as per CCR-TITLE 22 (if marked) -- = Not analyzed/not requested fi
r;;1 Data Reviewed and Approved by: __ /4 ________ _
CAL-OHS ELAP CERTIFICATE No.: 1555
Enviro - Chem, Inc.
1214 E. Lexington Avenue, Pomona, CA 91766 Tel (909) 590-5905 Fax (909) 590-5907

TOTAL THRESHOLD LIMIT CONCENTRATION ANALYSIS
UNIT: mg/Kg= MILLIGRAM PER KILOGRAM= PPM

ELEMENT SAMPLE TTLC STLC

ANALYZED RESULT PQL MDL DF LIMIT LIMIT
Antimony(Sb) ND 1.0 0.250 1 500 15
Arsenic (As) 1. 04 0.5 0.248 1 500 5.0
Barium(Ba) 162 5.0 0.143 1 10,000 100
Beryllium(Be) ND 0.5 0.180 1 75 0.75
Cadmium(Cd) ND 0.5 0 .119 1 100 1.0
Chromium Total(Cr) 33.7 0.5 0.138 1 2,500 560/5@
Chromium VI (Cr6) 0.2 0.0156 500 5.0
Cobalt(Co) 10.7 1.0 0.156 1 8,000 80
Copper(Cu) 15.5 1.0 0.203 1 2,500 25
Lead(Pb) 2.76 0.5 0.192 1 1,000 5.0
Mercury(Hg) 0.014 0.01 0.0062 1 20 0.2
Molybdenum(Mo) ND 5.0 0.274 1 3,500 350
Nickel(Ni) 6.96 2.5 0.165 1 2,000 20
Selenium(Se) ND 1.0 0.234 1 100 1.0
Silver(Ag) ND 1.0 0.414 1 500 5.0
Thallium(Tl) ND 1.0 0.432 1 700 7.0
Vanadium(V) 47.6 5.0 0.171 1 2,400 24
Zinc(Zn) 56.2 0.5 0 .131 1 5,000 250
EPA
METHOD
6010B
6010B
6010B
6010B
6010B
6010B
7196A
6010B
6010B
6010B
7471A
6010B
6010B
6010B
6010B
6010B
6010B
6010B
-----------------------------------------~---------------------------- COMMENTS OF= Dilution Factor
MDL= Method Detection Limit
PQL = Practical Quantitation Limit
J = Trace Concentration between MDL and PQL
Actual Detection Limit= PQL X OF
ND= Below the Actual Detection Limit or non-detected
TTLC = Total Threshold Limit Concentration
STLC = Soluble Threshold Limit Concentration
@=Must meet both the STLC Limit at 560 and EPA-TCLP Limit at 5 * = STLC analysis for the metal is recommended (if marked) **=Additional Analysis required, please call to discuss (if marked) ***=The concentration exceeds the TTLC Limit, and the sample is defined as hazardous waste as per CCR-TITLE 22 (if marked) -- = Not analyzed/not requested /l
/ ' ,., Data Reviewed and Approved by:_,_#_,,_/ _ ______ _ CAL-OHS ELAP CERTIFICATE No.: 1555
Enviro - Chem, Inc.
1214 E. Lexington Avenue, Pomona, CA 91766 Tel (909) 590-5905 Fax (909) 590-5907 LABORATORY RE.PORT
CUSTOMER: Leighton & Associates, Inc.
10532 Acacia, Suite B-6, Rancho Cucamonga, CA 91730
Tel: (909)484-2205 E-Mail: [email protected]
PROJECT: 13177.001
MATRIX :.SOIL
SAMPLING DATE:06/16/21
REPORT TO:Mr. ROBERT HANSEN
SAMPLE I.D.: SPlO

TOTAL THRESHOLD LIMIT
DATE RECEIVED:06/17/21
DATE ANALYZED:06/17&21/21
DATE REPORTED:06/23/21
LAB I.D.: 210617-52

CONCENTRATION ANALYSIS
UNIT: mg/Kg= MILLIGRAM PER KILOGRAM= PPM
- ---------------------------------------------------------------------

ELEMENT SAMPLE TTLC STLC EPA

ANALYZED RESULT PQL MDL DF LIMIT LIMIT METHOD
Antimony(Sb) ND 1.0 0.250 1 500 15 6010B
Arsenic(As) 1.08 0.5 0.248 1 500 5.0 6010B
Barium (Ba) 77.4 5.0 0.143 1 10,000 100 6010B
Beryllium(Be) ND 0.5 0.180 1 75 0.75 6010B
Cadmium (Cd) ND 0.5 0 .119 1 100 1.0 6010B
Chromium Total(Cr) 22.7 0.5 0.138 1 2,500 560/5@ 6010B
Chromium VI (Cr6) 0.2 0.0156 500 5.0 7196A
Cobalt(Co) 6.28 1.0 0.156 1 8,000 80 6010B
Copper(Cu) 12.1 1.0 0.203 1 2 , 500 25 6010
Lead(Pb) 4.76 0.5 0.192 1 1,000 5.0 6010B
Mercury(Hg) 0.029 0.01 0.0062 1 20 0.2 7471A
Molybdenum(Mo) ND 5.0 0.274 1 3,500 350 6010B
Nickel(Ni) 5.48 2.5 0.165 1 2,000 20 6010B
Selenium(Se) ND 1.0 0.234 1 100 1.0 6010B
Silver (Ag) ND 1.0 0.414 1 500 5.0 6010B
Thallium(Tl) ND 1.0 0.432 1 700 7.0 6010B
Vanadium(V) 25.0 5.0 0.171 1 2,400 24 6010B
Zinc(Zn) 54.6 0.5 0.131 1 5,000 250 6010B - ·---------·--- -----·-----·---____ , __________ ------------------------------

COMMENTS
OF= Dilution Factor
MDL= Method Detection Limit
PQL = Practical Quantitation Limit
J = Trace Concentration between MDL and PQL
Actual Detection Limit= PQL X OF
ND= Below the Actual Detection Limit or non-detected
TTLC = Total Threshold Limit Concentration
STLC = Soluble Threshold Limit Concentration
@=Must meet both the STLC Limit at 560 and EPA-TCLP Limit a t S * = STLC analysis for the metal is recommended (if marked) **=Additional Analysis required, please call to discuss (if marked) ***=The concentration exceeds the TTLC Limit, and the sample is defined as hazardous waste as per CCR-TITLE 22 (if marked) -- = Not analyzed/not requested(,/
Data Reviewed and Approved by:~t,_1/_, _ ______ _
CAL-OHS ELAP CERTIFICATE No.: 1555
Enviro - Chem, Inc.
1214 E. Lexington Avenue, Pomona, CA 91766 Tel (909) 590-5905 Fax (909) 590-5907

TOTAL THRESHOLD LIMIT
DATE RECEIVED:06/17/21
DATE ANALYZED:06/17&21/21
DATE REPORTED:06/23/21
LAB I.D.: 210617-53

CONCENTRATION ANALYSIS
UNIT: mg/Kg= MILLIGRAM PER KILOGRAM= PPM
-------------------------·----------·- ·---·- ·------·------------------------

ELEMENT SAMPLE TTLC STLC EPA
ANALYZED RESULT PQL MDL DF LIMIT LIMIT :METHOD
Antimony(Sb) ND 1.0 0.250 1 500 15 6010B
Arsenic(As) 0.408J 0.5 0.248 1 500 5.0 6010B
Barium(Ba) 225 5.0 0.143 1 10,000 100 6010B
Beryllium (Be) ND 0.5 0.180 1 75 0.75 6010B
Cadmium (Cd) ND 0.5 0 .119 1 100 1.0 6010B
Chromium Total(Cr) 34.5 0.5 0.138 1 2,500 560/5@ 6010B
Chromium VI (Cr6) 0.2 0.0156 500 5.0 7196A
Cobalt(Co) 11. 7 1.0 0.156 1 8,000 80 60 1 0B
Copper(Cu) 12.1 1.0 0.203 1 2,500 25 6010B
Lead(Pb) 1. 87 0.5 0.192 1 1,000 5.0 6010B
Mercury(Hg) 0.016 0.01 0.0062 1 20 0.2 7471A
Molybdenum(Mo) ND 5.0 0. 274 1 3,500 350 6010B
Nickel (Ni) 4.90 2.5 0.165 1 2raoo 20 60 1 0B
Selenium(Se) ND 1.0 0.234 1 100 1.0 6010B
Silver (Ag) ND 1.0 0.414 1 500 5.0 6010B
Thallium (Tl) ND 1.0 0.432 1 700 7.0 6010B
Vanadium(V) 52.8 5.0 0.171 1 2 ,400 24 60 1 0B
Zinc(Zn) 59.6 0.5 0 .131 1 5,000 250 6010B ----------·---------------------------------__ ......, ___ ...__ _______ ----- - --·- --

COMMENTS
OF= Dilution Factor
MDL= Method Detection Limit
PQL = Practical Quantitation Limit
J = Trace Concentration between MDL and PQL
Actual Detection Limit= PQL X OF
ND= Below the Actual Detection Li mit or non-detected
TTLC = Total Threshold Limit Concentration
STLC = Soluble Threshold Limit Concentration
@=Must meet both the STLC Limit at 560 and EPA-TCLP Limit at 5 * = STLC analysis for the metal is recommended (if marked) **=Additional Analysis required, please call to discuss (if marked) ***=The concentration exceeds the TTLC Limit, and the sample is defined as hazardous waste as per CCR-TITLE 22 (if marked) Not analyzed/not requested /~
Data Reviewed and Approved by: ~ /4, ~-y~ _· ______ _
CAL-OHS ELAP CERTIFICATE No.: 1555
Enviro - Chem, Inc.
1214 E. Lexington Avenue, Pomona, CA 91766 Tel (909) 590-5905 Fax (909) 590-5907

TOTAL THRESHOLD LIMIT
DATE RECEIVED:06/17/21
DATE ANALYZED:06/17&21/21
DATE REPORTED:06/23/21
LAB I.D.: 210617-55

CONCENTRATION ANALYSIS
UNIT: mg/Kg= MILLIGRAM PER KILOGRAM= PPM
--·---------- ---~--------·----------------------------- ·----------------·--

ELEMENT SAMPLE TTLC STLC EPA

ANALYZED RESULT PQL MDL OF LIMIT LIMIT METHOD
Antimony(Sb) ND 1.0 0.250 1 500 15 6010B
Arsenic (As) 0.403J 0.5 0.248 1 500 5.0 6010B
Barium(Ba) 185 5.0 0.143 1 10,000 100 6010B
Beryllium(Be) ND 0.5 0.180 1 75 0.75 6010B
Cadmium(Cd) ND 0.5 0 .119 1 100 1.0 6010B
Chromium Total(Cr) 29.9 0.5 0.138 1 2,500 560/5@ 6010B
Chromium VI (Cr6) 0.2 0.0156 500 5.0 7196A
Cobalt(Co) 10.2 1.0 0.156 1 8,000 80 6010B
Copper(Cu) 9.73 1.0 0.203 1 2,500 25 6010B
Lead(Pb) 1.85 0.5 0.192 1 1,000 5.0 6010B
Mercury(Hg) 0.016 0.01 0.0062 1 20 0.2 7471A
Molybdenum(Mo) ND 5.0 0.274 1 3,500 350 6010B
Nickel(Ni) 4.03 2.5 0.165 1 2,000 2 0 6010B
Selenium(Se) ND 1.0 0.234 1 100 1.0 6010B
Silver(Ag) ND 1.0 0.414 1 500 5.0 6010B
Thallium(Tl) ND 1.0 0.432 1 700 7.0 6010B
Vanadium(V) 46.1 5.0 0.171 1 2, mo 24 6010B
Zinc(Zn) 52.1 0.5 0.131 1 5,000 250 6010B
--·----- - - ----- - - ·---·------- ·---------------- ----------------·----·-------

COMMENTS
OF= Dilution Factor
MDL= Method Detection Limit
PQL = Practical Quantitation Limit
J = Trace Concentration between MDL and PQL
Actual Detection Limit= PQL X OF
ND= Below the Actual Detection Limit or non-detected
TTLC = Total Threshold Limit Concentration
STLC = Soluble Threshold Limit Concentration
@=Must meet both the STLC Limit at 560 and EPA-TCLP Limit at 5 * = STLC analysis for the metal is recommended (if marked) **=Additional Analysis required, please call to discuss (if marked) ***=The concentration exceeds the TTLC Limit, and the sample is defined as hazardous waste as per CCR-TITLE 22 (if marked) -- = Not analyzed/not requested _ (
Data Reviewed and Approved by:~'-~--------- CAL-DHS E_LAP CERTIFICATE No.: 1555 Enviro - Chem, Inc.
1214 E. Lexington Avenue, Pomona, CA 91766 Tel (909) 590-5905 Fax (909) 590-5907

TOTAL THRESHOLD LIMIT
DATE RECEIVED:06/17/21
DATE ANALYZED:06/17&21/21
DATE REPORTED:06/23/21
LAB I .D.: 210617-57

CONCENTRATION ANALYSIS
UNIT: mg/Kg= MILLIGRAM PER KILOGRAM= PPM
------------------------------ --------------------------------- ELEMENT SAMPLE TTLC STLC EPA

ANALYZED RESULT PQL MDL DF LIMIT LIMIT METHOD
Antimony(Sb) ND 1.0 0.250 1 500 15 6010B
Arsenic (As) 0.640 0.5 0.248 1 500 5 . 0 6010B
Barium(Ba) 234 5 . 0 0 . 143 1 10,000 100 6010B
Beryllium (Be) ND 0.5 0.180 1 75 0 . 75 6010B
Cadrnium(Cd) ND 0 .5 0 .119 1 100 1.0 6010B
Chromium Total(Cr) 35 .4 0.5 0.138 1 2 ,500 560/5@ 6010B Chromium VI (Cr6) 0.2 0.0156 500 5 . 0 719 6A
Cobalt(Co) 11. 6 1.0 0.156 1 8;000 80 60100
Copper(Cu) 13.7 1.0 0.203 1 2,500 25 6010B
Lead(Pb) 2 .5 9 0.5 0 . 192 1 1,000 5.0 6010B
Mercury(Hg) 0.016 0.01 0.0062 1 20 0.2 7471A
Molybdenum(Mo) ND 5.0 0.274 1 3 ,500 350 6010B
Nickel(Ni) 5 .16 2 .5 0 . 165 1 2 ,0 00 20 6010B
Selenium(Se) ND 1.0 0.234 1 100 1.0 6010B
Silver(Ag) ND 1.0 0 . 414 1 500 5 . 0 6010B
Thallium(Tl) ND 1.0 0.432 1 700 7 . 0 60·10B
Vanadium(V) 53.6 5.0 0.171 1 2,100 24 6010B
Zinc(Zn) 69 .0 0 . 5 0 . 131 1 5 , 000 250 6010B
------------- --- -------------- - - -------------------·- - - ----------------

COMMENTS
DF = Dilution Factor
MDL= Method Detection Limit
PQL = Practical Quantitation Limit
J = Trace Concentration between MDL and PQL
Actual Detection Limit= PQL X DF
ND= Below the Actual Detection Limit or non-detected
TTLC = Total Threshold Limit Concentration
STLC = Soluble Threshold Limit Concentration
@=Must meet both the STLC Limit at 560 and EPA-TCLP Limit at 5 * = STLC analysis for the metal is recommended (if marked) **=Additional Analysis required, pleaie call to discuss (i f marked) ***=The concentration exceeds the TTLC Limit, and the sample is defined as hazardous waste as per CCR-TITLE 22 (if marked) -- - Not analyzed/not requested ?I
Data Reviewed and Approved by: _ ._?_
1 _· _______ _
CAL-DHS ELAP CERTIFICATE No.: 1555
Enviro - Chem, Inc.
1214 E. Lexington Avenue, Pomona, CA 91766 Tel (909) 590-5905 Fax (909) 590-5907

TOTAL THRESHOLD
DATE RECEIVED:06/17/21
DATE ANALYZED:06/17&21/21
DATE REPORTED:06/23/21
LAB I.D.: 210617-59

LIMIT CONCENTRATION ANALYSIS
UNIT: mg/Kg= MILLIGRAM PER KILOGRAM= PPM
--------------------------------------------------------- ----------- ELEMENT SAMPLE TTLC STLC EPA

ANALYZED RESULT PQL MDL DF LIMIT LIMIT METHOD
Antimony(Sb) ND 1.0 0.250 1 500 15 6010B
Arsenic(As) 0.618 0 . 5 0.248 1 500 5.0 6010B
Barium(Ba) 234 5.0 0.143 1 10,000 100 6010B
Beryllium (Be) ND 0.5 0.180 1 75 0.75 6010B
Cadmium(Cd) ND 0.5 0 .119 1 100 1.0 6010B
Chromium Total(Cr) 35.3 0 . 5 0 .138 1 2,500 560/5@ 6010B Chromium VI (Cr6) 0.2 0.0156 500 5.0 7196A
Cobalt(Co) 11. 7 1.0 -0 .156 1 8,000 80 6010B
Copper (Cu) 13 .2 1. 0 0.203 1 2,500 25 6010B
Lead(Pb) 2.44 0.5 0.192 1 1,000 5.0 6010B
Mercury(Hg) 0.016 0.01 0.0062 1 20 0.2 7471A
Molybdenum(Mo) ND 5.0 0.274 1 3,500 350 6010B
Nickel(Ni) 4.85 2.5 0.165 1 2,000 20 6010B
Selenium(Se) ND 1.0 0.234 1 100 1.0 6010B
Silver(Ag) ND 1.0 0.414 1 500 5.0 6010B
Thallium(Tl) ND 1.0 0.432 1 700 7.0 6010B
Vanadium(V) 53.9 5.0 0.171 1 2,400 24 6010B
Zinc(Zn) 68.5 0 . 5 0 .131 1 5,000 25 0 6010B
- -----------------.----- ------- - ·--- --- ----- ----------- - - ---- --- --- -----~

COMMENTS
OF= Dilution Factor
MDL= Method Detection Limit
PQL = Practical Quantitation Limit
J = Trace Concentration between MDL and PQL
Actual Detection Limit= PQL X OF
ND= Below the Actual Detection Limit or non-detected
TTLC = Total Threshold Limit Concentration
STLC = Soluble Threshold Limit Concentration
@~Must meet both the STLC Limit at 560 and EPA-TCLP Limit at 5 * = STLC analysis for the metal is recommended (if marked) **=Additional Analysis required, please call to discuss (if marked) ***=The concentration exceeds the TTLC Limit, and the sample is defined as hazardous waste as per S7R-TITLE 22 (if marked) -- = Not analyzed/not requested J / 1
Data Reviewed and Approved by: ~ /4_.t ________ _
CAL-OHS ELAP CERTIFICATE No.: 1555
Enviro - ChemJ Inc.
1214 E. Lexington Avenue, Pomona, CA 91766 Tel (909) 590-5905 Fax (909) 590-5907

TOTAL THRESHOLD
DATE RECEIVED:06/17/21
DATE ANALYZED:06/17&21/21
DATE REPORTED:06/23/21
LAB I.D.: 210617-61

LIMIT CONCENTRATION ANALYSIS
UNIT: mg/Kg= MILLIGRAM PER KILOGRAM= PPM
---------------------------------------------------------------------- ELEMENT SAMPLE TTLC

ANALYZED RESULT PQL MDL DF LIMIT
Antimony(Sb) ND 1.0 0.250 1 500
Arsenic(As) 1.08 0.5 0.248 1 500
Barium(Ba) 92.2 5.0 0.143 1 10,000
Beryllium(Be) ND 0.5 0.180 1 75
Cadmium(Cd) ND 0.5 0 .119 1 100
Chromium Total(Cr) 23.4 0.5 0.138 1 2,500
Chromium VI (Cr6) 0.2 0.0156 500
Cobalt(Co) 6.95 1.0 0.156 1 8,000
Copper(Cu) 9.70 1.0 0.203 1 2,500
Lead(Pb) 3.84 0.5 0.192 1 1,000
Mercury(Hg) 0.020 0.01 0.0062 1 20
Molybdenum(Mo) ND 5.0 0.274 1 3,500
Nickel(Ni) 5.06 2.5 0.165 1 2,000
Selenium(Se) ND 1.0 0.234 1 100
Silver (Ag) ND 1.0 0.414 1 500
Thallium (Tl) ND 1.0 0.432 1 700
Vanadium(V) 31. 6 5.0 0.171 1 2,400
Zinc(Zn) 54.9 0.5 0.131 1 5,000
-------------------------~---------------------------

0.75 1.0
560/5@

5.0 80
25 5.0

0.2 350
20 1.0

5.0 7.0
24 250
@=Must meet both the STLC Limit at 560 and EPA-TCLP Limit at 5 EPA
METHOD
6010B
6010B
6010B
6010B
6010-B
6010B
7196A
6010B
6010B
6010B
7471A
6010B
60108
6010B
6010B
6010B
6010B
6010B
* = STLC analysis for the metal is recommended (if marked) **=Additional Analysis required, please call to discuss (if marked) ***=The concentration exceeds the TTLC Limit, and the sample is defined as hazardous waste as per CCR-TITLE 22 (if marked) Not analyzed/not requested .~
. ;/l Data Reviewed and Approved by:_~/,_R _______ _
CAL-OHS ELAP CERTIFICATE No.: 1555
Enviro - Chem, Inc.
1214 E. Lexington Avenue, Pomona, CA 91766 Tel (909) 590-5905 Fax (909) 590-5907

TOTAL THRESHOLD LIMIT CONCENTRATION ANALYSIS
UNIT: mg/Kg= MILLIGRAM PER KILOGRAM= PPM

ELEMENT

ANALYZED
Antimony(Sb)
Arsenic(As)
Barium(Ba)
Beryllium (Be)
Cadmium( Cd)
Chromi um Total( Cr)
Chromi um VI (Cr6)
Cobalt(Co)
Copper(Cu)
Lead(Pb)
Mercury(Hg)
Molybdenum(Mo)
Nickel(Ni)
Selenium(Se)
Silver(Ag)
Thallium(Tl)
Vanadi um(V)
Zinc(Zn)

COMMENTS
OF= Dilution Factor
SAMPLE
RESULT
ND

0.827
147
ND
ND
2 6.1

8.17 10.9

4.61 0. 013
ND

4.28 ND
ND
ND

37.9 58.8
MDL= Method Detection Limit
PQL = Practical Quantitation Limit

PQL MDL

1.0 0.250

0.5 0.248

5.0 0.143

0.5 0 . 180

0.5 0 .119

0.5 0 .138

0.2 0.0156

1.0 0 .156

1. 0 0.203

0.5 0.192

0.01 0.0062

5.0 0.274
2 . 5 0 . 165

1.0 0.234

1.0 0.414

1. 0 0 .432

5.0 0.171

0.5 0 .131
J = Trace Concentration between MDL and PQL
Actual Detection Limit = PQL X OF
TTLC

DF LIMIT
1 500
1 500
1 10,000
1 75
1 100
2,500
1 500
1 8 , 000
1 2 , 500
1 1 , 000
1 20
1 3 ,500
1 2,000
1 100
1 500
1 700
1 2 r4 00
1 5 ,0 00
ND= Below the Actual Detection Limit or non-detected
TTLC = Total Threshold Limit Concentration
STLC = Soluble Threshold Limit Concentration
STLC
LIMIT
15 5 . 0
100

0.75 1.0
560/5@

5.0 80
25 5 . 0

0.2 350
20 1.0

5.0 7.0
24 250
@=Must meet both the STLC Limit at 560 and EPA-TCLP Limit a t 5 EPA
METHOD
6010B
6010B
6010B
6010B
6010B
6010B
7196A
6010B
6010B
6010B
7 471A
6010B
6010B
6010B
6010B
6010B
6010B
6010B
* = STLC analysis fo r the metal is recommended (if marked) **=Additional Analysis required, please cal l to discuss (if marked) ***=The concentration exceeds the TTLC Limit, and the sample is defined as hazardous waste as per CCR-TITLE 22 (if marke d) Not analyzed/not requested ! !
Data Reviewed and Approved by: __,/-""~--- ------
CAL-DHS ELAP CERTIFICATE No.: 1555
Enviro - Chem, Inc.
1214 E. Lexington Avenue, Pomona, CA 91766 Tel (909) 590-5905 Fax (909) 590-5907

METHOD BLANK REPORT
CUSTOMER: Leighton & Associates, Inc.
10532 Acacia, Suite B-6, Rancho Cucamonga, CA 91730
Tel: (909)484-2205 E-Mail: [email protected]
PROJECT: 13177.001
MATRIX:SOIL
SAMPLING DATE:06/16/21
REPORT TO:Mr. ROBERT HANSEN
DATE RECEIVED:06/17/21
DATE ANALYZED:06/17&21/21
DATE REPORTED:06/23/21
METHOD BLANK FOR LAB I.D.:
210617-49, -51, -52, -53, -55, -57, -59, -61, - 63
TOTAL THRES.HOLD LIMIT CONCENTRATION ANALYSIS
UNIT: mg/Kg= MILLIGRAM PER KILOGRAM= PPM
-~------------~---------------------------~~~------------------------- ELEMENT SAMPLE

ANALYZED RESULT PQL MDL
Antimony(Sb) ND 1.0 0.250
Arsenic(As) ND 0.5 0.248
Barium (Ba) ND 5.0 0.143
Beryllium(Be) ND 0.5 0.180
Cadmium(Cd) ND 0.5 0 .119
Chromium Total(Cr) ND 0.5 0 .138
Chromium VI (Cr6) 0.2 0.0156
Cobalt(Co) ND 1.0 0.156
Copper(Cu) ND 1.0 0.203
Lead(Pb) ND 0.5 0.192
Mercury(Hg) ND 0.01 0.0062
Molybdenum(Mo) ND 5.0 0.274
Nickel(Ni) ND 2.5 0.165
Selenium(Se) ND 1.0 0.234
Silver (Ag) ND 1.0 0.414
Thallium(Tl) ND 1.0 0.432
Vanadium(V) ND 5.0 0.171
Zinc(Zn) ND 0.5 0 .131

COMMENTS
OF= Dilution Factor
MDL= Method Detection Limit
PQL = Practical Quantitation Limit
J = Trace Concentration between MDL and PQL
Actual Detection Limit= PQL X DF
TTLC

DF LIMIT
1 500
1 500
1 10,000
1 75
1 100
1 2,500
500
1 8,000
1 2,500
1 1,000
1 20
1 3,500
1 2,000
1 100
1 500
1 700
1 2 ,400
1 5,000
ND= Below the Actual Detection Limit or non-detected
TTLC = Total Threshold Limit Concentration
STLC = Soluble Threshold Limit Concentration
STLC
LIMIT
15 5.0
100

0.75 1.0
560/5@

5.0 80
25 5.0

0.2 350
20 1.0

5.0 7.0
24 250
@=Must meet both the STLC Limit at 560 and EPA-TCLP Limit at 5 EPA
METHOD
6010B
6010B
6010B
6010B
6010B
6010B
7196A
6010B
6010B
6010B
7471A
6010B
6010B
6010B
6010B
6010B
6010B
6010B
* = STLC analysis for the metal is recommended (if marked) **=Additional Analysis required, please call to discuss (if marked) ***=The concentration exceeds the TTLC Limit, and the sample is defined as hazardous waste as per CCR-TITLE 22 (if marked) Not analyzed/not requested
Data Reviewed and Approved by: _________ _
CAL-OHS ELAP CERTIFICATE No.: 1555
Q;I/QC .for :JvtetaCs Jina{ysis--TTLC--SOLID/SOIL MATRIX I
Matrix S12ike/ Matrix S12ike Du12licate/ LCS :

Metals Analysis Date: 6/21/2021
Mercury Analysis Date: 6/17/2021 Unit : mg/Kg_{e12.ml
Analysis Spk.Sample LCS LCS LCS Sample Spike MS %Rec MSD %Rec %RPO ID CONC. %Rec. STATUS Result Cone. MS MSD
Antimony (Sb) 210617-61 50.0 103 PASS 0 I 50 42.5 B,5% 42 . .8 86% 1% I Arsenic (As) 210617-61 50.0 106 PASS 1.08 50 46.0 90% 46.3 90% 1% Barium (Ba) 210617-61 50.0 107 PASS 92.2 50 97.8 11%* 98.5 13%* 12% Beryllium (Be) 210617-61 50.0 110 PASS 0 50 46.5 93% 46.8 94% 1% I Cadmium (Cd) 210617-61 50.0 107 PASS 0 50 47.0 94% 47.3 95% 1% Chromium (Cr) 210617-61 50.0 103 PASS 23.4 50 62.0 77% 62.5 78% 1% ' Cobalt (Co) 210617-61 50.0 104 PASS 6.95 50 45.6 77% 45.7 78% 0% ' Copper (Cu) 210617-61 50.0 109 PASS 9.70 50 56.3 93% 56.8 94% 1% Lead (Pb) 210617-61 50.0 1.05 PASS 3.84 50 58.2 109% 58.3 109% 0% Mercury (Hg) 210617-78 0.125 96 PASS 0 0.125 0.111 89% 0.104 83% 7% Molybdenum(Mo) 210617-61 50.0 104 PASS 0 50 43.1 86% 43.4 87% 1% Nickel (Ni) 210617-61 50.0 1.07 PASS 5.06 50 47.1 84% 47.4 85% 1% Selenium (Se) 210617-61 50.0 105 PASS D 50 42.8 86% 43.0 86% 0% '
I
' Silver (Ag) 210617-61 5.0 100 PASS 0 I 5.0 4.51 90% 4.50 90% 0% Thallium (Tl) 210617-61 50.0
"
104 PASS a 50 41.7 83% 42.11 84% 1%
Vanadium (V) 210617-61 50.0 102 PASS 31.6 50 71.3 79'% 71 .5 80% 1% Zinc (Zn) 210617-61 50.0 107 PA.S:S: 54.9 I 50 92.6 _2i; 0t .. 92.7 76% 0% ANALYST:
//~
*=Fail due to matrix interference
Note:LCS is in control therefore results are in control FINAL REVIEWER: 6u Enviro - Chem, Inc.
1214 E. Lexington Avenue, Pomona, CA 91766 Tel (909) 590-5905 Fax (909) 590-5907

PARAMETER SAMPLE RESULT PQL
Aldrin
al12ha-BHC
beta-BHC
a amma-BHC (Lindane }
delta-BHC
al12ha-Chlordane
g amma-Chlordane
Technical Chlordane
4 4'-DDD
4 4'-DDE
4 4'-DDT
Dieldrin
Endosulfan I
Endosulfan II
Endosulfan Sulfate
Endrin
Endrin Aldeh::i:::de
Endrin Ketone
Hfil2 tachlor EQoxide
He12tachl or
Methox;:L clor
Toxa12hene
COMMENTS:

OF= Dilution Factor
MDL= Method Detection Limit
PQL = Practical Quantitation Limit
Actual Detection Limit= PQL X DF
J = Trace Concentration between MDL
ND= Below the Actual Detecti o n
Data Reviewed and Approved by:

CAL-OHS CERTIFICATE# 1555
ND 0.001
ND 0.001
ND 0.001
ND 0.001
ND 0.001
ND 0.001
ND 0.001
ND 0.005
ND 0.001

0.012 0.001
ND 0.001
ND 0.001
ND 0.001
ND 0.001
ND 0.001
ND 0.001
ND 0.001
ND 0.001
ND 0.001
ND 0.001
ND 0.001
ND 0.020
and PQL
f or non-de tec t ed
MDL

0.0001

0.0002

0. 00-01

0.0001

0.0002

0.0001

0.0005

0.0003

0.0001

0.0003

0.0002

0.0001

0.0004

0.0001

0.0003

0.0001

0.0100
DF
10 10
10 10
10 10
10 10
10 10
10 10
10 10
10 10
10 10
10 10
10 10
Enviro - Chem, Inc.
1214 E. Lexington Avenue, Pomona, CA 91766 Tel (909) 590-5905 Fax (909) 590-5907

PARAMETER SAMPLE RESULT
Aldrin
al12ha-BHC
beta-BHC
g amma-BHC (Lindane )
delta-BHC
al12ha-Chlordane
g amma-Chlordane
Technical Chlordane
4 4'-DDD
4 4'-DDE
4 4'-DDT
Dieldrin
Endosulfan I
Endosulfan II
Endosulfan Sulfate
Endrin
Endrin Aldehyde
Endrin Ketone
He12tachlor E2oxide
He12tachlor
Methoxyclor
Toxa12hene
COMMENTS:

OF= Dilution Factor
MDL= Method Detection Limit
PQL = Practical Quantitation Limit
Actual Detection Limit= PQL X OF
ND
ND
ND
ND
ND

0.0009J

0.001

0.007
ND
ND
ND
ND
ND
ND
ND
ND
ND
ND
ND
ND
ND
ND
J = Trace Concentration between MDL and PQL
PQL

0.001

0.005

0.001

0.020
ND = Below the Actual Detection Li]Jll (J or non-detected / r
Data Reviewed and Approved by:_~/4/'-------
CAL-DHS CERTIFICATE# 1555
MDL

0.0001

0.0002

0.0001

0.0002

0.0001

0.0005

0.0003

0.0001

0.0003

0.0002

0.0001

0.0004

0.0001

0.0003

0.0001

0.0100
DF
1 1
1 1
1 1
1 1
1 1
1 1
1 1
1 1
1 1
1 1
1 1
Enviro - Chem, Inc.
1214 E. Lexington Avenue, Pomona, CA 91766 Tel (909) 590-5905 Fax (909) 590-5907

PARAMETER SAMPLE RESULT
Aldrin
al12ha-BHC
beta-BHC
g amma-BHC (Lindane )
delta-BHC
al12ha-Chlordane
a amma-Chlordane
Technical Chlordane
4 4'-000
4 4'-DDE
4 4'-DDT
Dieldrin
Endosulfan I
Endosulfan II
Endosulfan Sulfate
Endrin
Endrin Aldehyde
Endrin Ketone
He12tachlor E12oxide
HeQtachlor
Methoxyclor
Toxa12 hene
COMMENTS:

OF= Dilution Factor
MDL= Method Detection Limit
PQL = Practical Quantitation Limit
Actual Detection Limit= PQL X OF
ND
ND
ND
ND
ND
ND
ND
ND
ND

0.013
ND
ND
ND
ND
ND
ND
ND
ND
ND
ND
ND
ND
J = Trace Concentration between MDL and PQL
PQL

0.001

0.005

0.001

0.020
ND= Below the Actual Detection Lim}t or non-detected
Data Reviewed and Approved by: _j,,-1-_ ' _____ _ CAL-OHS CERTIFICATE# 1555 MDL

0.0001

0.0002

0.0001

0.0002

0.0001

0.0005

0.0003

0.0001

0.0003

0.0002

0.0001

0.0004

0.0001

0.0003

0.0001

0.0100
DF
10 10
1 0
10 10
10 10
10 10
10 10
10 10
10 10
10 10
10 10
10 10
10 Enviro - Chem, Inc.
1214 E. Lexington Avenue, Pomona, CA 91766 Tel (909) 590-5905 Fax (909) 590-5907

PARAMETER SAMPLE RESULT
Al g,rin
al2ha-BHC
beta-BHC
g amma-BHC (Lindane )
delta-BHC
al,Qha-Chlordane
g amma-Chlordane
Technical Chlordane
4 4'-000
4 4'-DDE
4 4'-DDT
Dieldrin
Endosulfan I
Endosulfan II
Endosulfan Sulfate
Endrin
Endrin Aldehy:de
Endrin Ketone
Hegtachlor Egoxide
He.Q tachlor
Methoxyclor
Toxa,Q hene
COMMENTS:

OF= Dilution Factor
MDL= Method Detection Limit
PQL = Practical Quantitation Limit
Actual Detection Limit= PQL X OF
ND
ND
ND
ND
ND
ND
ND
ND
ND

0.0005J

0.001
ND
ND
ND
ND
ND
ND
ND
ND
ND
ND
ND
J = Trace Concentration between MDL and PQL
PQL

0.001

0.005

0.001

0.020
ND = Below the Actua l De t ect i on Li mi/ o r non-det ect e d Data Reviewed and Approved by: _~t,.~',f_v'_, _____ _
CAL-OHS CERTIFICATE# 1555
MDL

0.0001

0.0002

0.0001

0.0002

0.0001

0.0005

0.0003

0.0001

0.0003

0.0002

0.0001

0. 0·001

0.0004

0.0001

0.0003

0.0001

0.0100
OF
1 1
1 1
1 1
1 1
1 1
1 1
1 1
1 1
1 1
1 1
1 1
Enviro - Chem, Inc.
1214 E. Lexington Avenue, Pomona, CA 91766 Tel (909) 590-5905 Fax (909) 590-5907

PARAMETER SAMPLE RESULT
Aldrin
alQha-BHC
beta-BHC
g amma-BHC (Lindane )
delta-BHC
al12ha-Chlordan~
g amma-Chlordane
Technical Chlordane
4 4'-DDD
4 4'-DDE
4 4'-DDT
Dieldrin
Endosulfan I
Endosulfan II
Endosulfan Sulfate
Endrin
Endrin Aldeh~de
Endrin Ketone
Hegtachlor E£oxide
He12tachlor
Methox~clor
Toxa12hene
COMMENTS:

DF = Dilution Factor
MDL= Method Detection Limit
PQL = Practical Quantitation Limit
Actual Detection Limit= PQL X DF
ND
ND
ND
ND
ND
ND
ND
ND
ND

0.003
ND
ND
ND
ND
ND
ND
ND
ND
ND
ND
ND
ND
J = Trace Concentration between MDL and PQL
PQL

0.001

0.005

0.001

0.020
ND = Below the Actual Detection >.tY or non-detected
Data Reviewed and Approved by: ____ h"_p: _/ ______ _ CAL-OHS CERTIFICATE# 1555 MDL

0.0001

0.0002

0.0001

0.0002

0.0001

0.000 2

0.0003

0.0001

0.0003

0.0002

0.0001

0.0004

0.0001

0.0003

0.0001

0.0100
OF
2 2
2 2
2 2
2 2
2 2
2 2
2 2
2 2
2 2
2 2
2 2
Enviro - Chem, Inc.
1214 E. Lexington Avenue, Pomona, CA 91766 Tel (909) 590-5905 Fax (909) 590-5907

PARAMETER SAMPLE RESULT
Aldrin
al12ha-BHC
beta-BHC
gamma-BHC (Lindane }
delta-BHC
algha-Chlordane
g amma-ChlQrdane
Technical Chlordane
4 4'-00D
4 4'-DDE
4 4'-DDT
Dieldrin
Endosulfan I
Endosulfan II
Endosulfan Sulfate
Endrin
Endrin Aldeh)Lde
Endrin Ketone
HeQtachlor EQOXide
HeQtachlor
Methox)Lclor
Toxa12hene
COMMENTS:

OF= Dilution Factor
MDL= Method Detection Limit
PQL = Practical Quantitation Limit
Actual Detection Limit= PQL X OF
ND
ND
ND
ND
ND

0.0008J

0.001

0.007
ND

0.0007J
ND
ND
ND
ND
ND
ND
ND
ND
ND
ND
ND
ND
J = Trace Concentration between MDL and PQL
PQL

0.001

0.005

0.001

0.020
ND= Below the Actual Detection Lif1 or non-detected
Data Reviewed and Approved by: _~J,~f ______ _
CAL-OHS CERTIFICATE# 1555
MDL DF

0.0001 1

0.0002 1

0.0001 1

0.0002 1

0.0001 1

0.0005 1

0.0003 1

0.0001 1

0.0003 1

0.0002 1

0.0001 1

0.0004 1

0.0001 1

0.0003 1

0.0001 1

0.0100 1
Enviro - Chem, Inc.
1214 E. Lexington Avenue, Pomona, CA 91766 Tel (909) 590-5905 Fax (909) 590-5907

PARAMETER SAMPLE RESULT
Aldrin
al12ha-BHC
beta-BHC
a amma-BHC (Lindane }
delta-BHC
al12ha-Chlordane
gamma-Chlordane
Technical Chlordane
4 4'-DDD
4 4'-DDE
4 4'-DDT
Dieldrin
Endosulfan I
Endosulfan II
Endosulfan Sulfate
Endrin
Endrin Aldehyd~
Endrin Ketone
Her2tachlor E12oxide
He12tachlor
Methox:i_clor
Toxa12hene
COMMENTS:

OF= Dilution Factor
MDL= Method Detection Limit
PQL = Practical Quantitation Limit
Actual Detection Limit= PQL X OF
ND
ND
ND
ND
ND
ND
ND
ND
ND

0.0006J
ND
ND
ND
ND
ND
ND
ND
ND
ND
ND
ND
ND
J = Trace Concentration between MDL and PQL
PQL

0.001

0.005

0.001

0.020
ND~ Below the Actual Detection 1·•7' or non-detected
Data Reviewed and Approved by: _~~/2:..__ ~-------
CAL-DHS CERTIFICATE# 1555
MDL

0.0001

0.0002

0.0001

0.0002

0.0001

0.0005

0.0003

0.0001

0.0003

0.0002

0.0001

0.0004

0.0001

0.0003

0.0001

0.0100
DF
1 1
1 1
1 1
1 1
1 1
1 1
1 1
1 1
1 1
1 1
1 1
Enviro - Chem, Inc.
1214 E. Lexington Avenue, Pomona, CA 91766 Tel (909) 590-5905 Fax (909) 590-5907

OF= Dilution Factor
MDL= Method Detection Limit
PQL = Practical Quantitation Limi t
Actual Detection Limit = PQL X OF
ND
ND
ND
ND
ND
ND
ND
ND
ND
0 . 0008J

0.0006J
ND
ND
ND
ND
ND
ND
ND
ND
ND
ND
ND
J = Trace Concentration between MDL and PQL
PQL

0.001

0.005

0.001

0.020
ND= Below the Actual Detection Lim' or non-detected
Data Reviewed and Approved by:_~,-~_v ______ _
CAL-OHS CERTIFICATE# 1555
MDL DF

0.0001 1

0.0002 1

0.0001 1

0.0002 1

0.0001 1

0.0005 1
0 . 0003 1

0.0003 1

0.0001 1
0 .0003 1
0 .0002 1

0.0001 1

0.0004 1

0.0001 1

0.0003 1

0.0001 1

0.0100 1
Enviro - Chem, Inc.
1214 E. Lexington Avenue, Pomona, CA 91766 Tel (909) 590-5905 Fax (909) 590-5907

PARAMETER SAMPLE RESULT
Aldrin
al12ha-BHC
beta-BHC
gamma-BHC (Lindane ),
delta-BHC
al12ha-Chlordane
gamma-Chlordane
Technical Chlordane
4 4'-DDD
4 4'-DDE
4 4'-DDT
Dieldrin
Endosulfan I
Endosulfan II
Endosulfan Sulfate
Endrin
Endrin Aldeh::i::de
Endrin Ketone
Hegtachlor E12oxide
He12tachlor
Me thox,_yclo r
Toxa12hene
COMMENTS:

OF= Dilution Factor
MDL= Method Det e ction Limit
PQL = Practical Quantitation Limit
Actual Detection Limit= PQL X OF
ND
ND
ND
ND
ND
ND
ND
ND
ND
0 .115

0.034J
ND
ND
ND
ND
ND
ND
ND
ND
ND
ND
ND
J = Trace Concentration between MDL and PQL
PQL
0 . 001

0.001

0.005

0.001

0.020
ND= Below the Actual Detection Liymi or non-detected
/ , Data Reviewed and Approved by: _~~~------- -
CAL-DHS CERTIFICATE# 1555
:MDL

0.0001

0.0002

0.0001

0.0002

0.0001

0.0005

0.0003

0.0001

0.0003

0.0002

0.0001

0.0004

0.0001

0.0003

0.0001

0.0100
DF
50 50
50 50
50 50
50 50
50 50
50 50
50 50
50 50
50 50
50 50
50 50
Enviro - Chem, Inc.
1214 E. Lexington Avenue, Pomona, CA 91766 Tel (909) 590-5905 Fax (909) 590-5907

DATE ANALYZED:06/18/21
DATE REPORTED:06/23/21
SAMPLE I.D.: AG2-0.5 LAB I.D.: 210617-29
Organochlorine Pesticides Analysis
method: EPA 8081A
Unit: mg/Kg= Milligram Per Kilogram= PPM

PARAMETER SAMPLE RESULT
Aldrin
alQha-BHC
beta-BHC
,garnrna-BHC (Lindane )
delta-BHC
al12ha-Chlordane
g amma-Chlordane
Technical Chlordane
4 4'-DDD
4 4'-DDE
4 4'-DDT
Dieldrin
Endosulfan I
Endosulfan II
Endosulfan Sulfate
Endrin
Endrin Aldeh;£de
Endrin Ketone
HeQtachlor EQOXide
He12tachlor
Methox;£clor
Toxa12hene
COMMENTS:

OF= Dilution Factor
MDL= Method Detection Limit
PQL = Practical Quantitation Limit
Actual Detection Limit= PQL X OF
ND
ND
ND
ND
ND
ND
ND
ND
ND
0 .117
ND
ND
ND
ND
ND
ND
ND
ND
ND
ND
ND
ND
J = Trace Concentration between MDL and PQL
PQL

0.001

0.005

0.001

0.020
ND = Below the Actual Detection LiY-)' or non-detected
Data Reviewed and Approved by: ~ft/~ -~1/ ______ _
CAL-OHS CERTIFICATE# 1555
MDL

0.0001

0.0002

0.0001

0.0002

0.0001

0.0005

0.0003

0.0001

0.0003

0.0002

0.0001

0.0004

0.0{)01

0.0001

0.0003

0.0001

0.0100
DF
50 50
50 50
50 50
50 50
50 50
50 50
50 50
50 50
50 50
50 50
50 50
Enviro - Chem, Inc.
1214 E. Lexington Avenue, Pomona, CA 91766 Tel (909) 590-5905 Fax (909) 590-5907

PARAMETER SAMPLE RESULT
Aldrin
alQha-BHC
beta-BHC
g amma-BHC (Lindane )
delta-BHC
alQha-Chlordane
g amma-Chlordane
Technica l Chlordane
4 4'-DDD
4 4'-DDE
4 4'-DDT
Dieldrin
Endosulfan I
Endosulfan II
Endosulfan Sulfate
Endrin
Endrin Aldeh:ii::de
Endrin Ketone
Hegtachlor EQOXide
HeQtachlor
Methoxtclor
Toxa12hene
COMMENTS:

DF = Dilution Factor
MDL= Method Detection Limit
PQL = Practical Quantitation Limi t
Actual Detection Limit= PQL X DF
ND
ND
ND
ND
ND
ND
ND
ND
ND

0.115
ND
ND
ND
ND
ND
ND
ND
ND
ND
ND
ND
ND
J = Trace Concentration between MDL ad PQL
PQL

0.001

0.005

0.001

0.020
ND = Below the Actual Detection Lif9 • ~ or non-detected /4 /' Data Reviewed and Approved by: _ _,1,~~i?:' ______ _ CAL-OHS CERTIFICATE# 1555
MDL

0.0001

0.0002

0.0001

0.0002

0.0001

0.0005

0.0003

0.0001

0.0003

0.0002

0.0001

0.0004

0.0001

0.0003

0.0001

0.0100
DF
50 50
50 50
50 50
50 50
50 50
50 50
50 50
50 50
50 50
50 50
50 50
Enviro - Chem, Inc.
1214 E. Lexington Avenue, Pomona, CA 91766 Tel (909) 590-5905 Fax (909) 590-5907

PARAMETER SAMPLE RESULT
Aldrin
alQha-BHC
beta-BHC
g arnma-BHC (Lindane j
delta-BHC
al12ha-Chlordane
g amma-Chlordane
Technical Chlordane
4 4'-DDD
4 4'-DDE
4 4'-DDT
Dieldrin
Endosulfan I
Endosulfan II
Endosulfan Sulfate
Endrin
Endrin Aldehyde
Endrin Ketone
He12tachlor E2oxide
HeQtachlor
Methoxyclor
ToxaQhene
COMMENTS:

OF= Dilution Factor
MDL= Method Detection Limit
PQL = Practical Quantitation Limit
Actual Detection Limi t= PQL X OF
ND
ND
ND
ND
ND
ND
ND
ND
ND

0.099
ND
ND
ND
ND
ND
ND
ND
ND
ND
ND
ND
ND
J = Trace Concentration between MDL and PQL
PQL

0.001

0.005

0.001

0.020
ND= Below the Actual Detection Limi/ or non-detect e d
Data Reviewed and Approved by: _ ~/4_// ______ _
CAL-OHS CERTIFICATE# 1555
MDL

0.0001

0.0002

0.0001

0.0002

0.0001

0.0005

0.0003

0.0001

0.0003

0.0002

0.0001

0.0004

0.0001

0.0003

0.0001

0.0100
DF
50 50
50 50
50 50
50 50
50 50
50 50
50 50
50 50
50 50
50 50
50 50
Enviro - Chem, Inc.
1214 E. Lexington Avenue, Pomona, CA 91766 Tel (909) 590-5905 Fax (909) 590-5907

PARAMETER SAMPLE RESULT
Aldrin
alQha-BHC
beta-BHC
g amma-BHC (Lindane l
delta-BHC
al12ha-Chlordane
g amma-Chlordane
Technical Chlordane
4 4'-DDD
4 4'-DDE
4 4'-DDT
Dieldrin
Endosulfan I
Endosulfan II
Endosulfan Sulfate
Endrin
Endrin Aldeh;:Lde
Endrin Ketone
He12tachlor EQoxide
He12tachlor
Methox~clor
ToxaQhene
COMMENTS:

OF= Dilution Factor
MDL= Method Detection Limit
PQL = Practical Quantitation Limit
Actual Detection Limi t= PQL X OF
ND
ND
ND
ND
ND
ND
ND
ND
ND

0.057

0.014
ND
ND
ND
ND
ND
ND
ND
ND
ND
ND
ND
J = Trace Concentration between MDL and PQL
PQL

0.001

0.005

0.001

0.020
ND= Below the Actual Detection Li 1 or non-detected
Data Reviewed and Approved by:_~i~r ____ __ _
CAL-OHS CERTIFICATE# 15 55
MDL

0.0001

0. 0 002

0.0001

0.0002

0.0001

0.0005

0.0003

0.0001

0.0003

0.000 2

0.0001

0.0004

0.0001

0.0003

0.0001

0.0100
DF
10 10
10 10
10 10
10 10
10 10
10 10
10 10
10 10
10 10
10 10
10 10
Enviro - Chem, Inc.
1214 E. Lexington Avenue, Pomona, CA ~1766 Tel (909) 590-5905 Fax (909) 590-5907

PARAMETER SAMPLE RESULT
Aldrin
alQha-BHC
beta-BHC
g amma-BHC (Lindane)
delta-BHC
alQha-Chlordane
g amma-Chlordane
Technical Chlordane
4 4'-DDD
4 4'-DDE
4 4'-DDT
Dieldrin
Endosulfan I
Endosulfan II
Endosulfan Sulfate
Endrin
Endrin Aldeh;)'.'.'.de
Endrin Ketone
HeQtachlor Egoxide
He12tachlor
Methox:iclor
Toxar2hene
COMMENTS:

OF= Dilution Factor
MDL= Method Detection Limit
PQL = Practical Quantitation Limi t
Actual Detection Limit= PQL X OF
ND
ND
ND
ND
ND
ND
ND
ND
ND
0 . 041

0.007J
ND
ND
ND
ND
ND
ND
ND
ND
ND
ND
ND
J = Trace Concentration between MDL and PQL
PQL

0.001

0.005

0.001

0.020
ND= Below the Actual Detection LimiU or non-detected
/! 1
Data Reviewed and Approved by:_~tf:------ CAL-DHS CERTIFICATE# 1555 MDL DF

0.0001 10

0.0002 10

0.0001 10

0.0002 10

0.0001 10

0.0005 10

0.0003 10

0.0001 10

0.0003 10

0.0002 10

0.0001 10

0.0004 10

0.0001 10

0.0003 10

0.0001 10

0.0100 10
Enviro - Chem, Inc.
1214 E. Lexington Avenue, Pomona, CA 91766 Tel (909) 590-5905 Fax (909) 590-5907

OF= Dilution Factor
MDL= Method Detection Limit

SAMPLE RESULT
ND
ND
ND
ND
ND
ND
ND
ND
ND

0. 03 1
ND
ND
ND
ND
ND
ND
ND
ND
ND
ND
ND
ND
PQL = Practi cal Quantitation Limit
Actual De tecti on Limit = PQL X OF
J = Trace Concentr ation between MDL and PQL
PQL
0 . 001
0 . 001
0 . 001
0 . 001
0 . 001
0 . 001
0 . 001
0 . 005
0 . 001
0 . 001
0 . 001
0 . 001
0 . 001
0 . 00 1
0 . 001
0 . 001
0 . 001

0.001

0.001
0 . 001
0 . 001

0.020
ND= Below the Actual De tection Li~ or non-detected
Data Reviewed and Approved by: _ _ l,. ~~-~------- CAL-DHS CERTIFICATE# 1555 MDL
0 . 0001

0.000 2
0 . 0001
0 . 0001
0 . 0002
0 . 0002
0 . 0001

0.0005

0.0003
0 . 0003

0.0001
0 . 0003

0.0002
0 . 0001
0 . 0001
0 . 0004
0 . 0001
0 . 0001
0 . 0003
0 . 0001
0 . 0001
0 . 0100
DF
10 10
10 10
10 10
10 10
10 10
1 0
10 10
10 10
10 10
10 10
10 10
10 Enviro - Chem, Inc.
1214 E. Lexington Avenue, Pomona, CA 91766 Tel (909) 590-5905 Fax (909) 590-5907

PARAMETER SAMPLE RESULT
Aldrin
al12ha-BHC
beta-BHC
g amma-BHC (Lindane l
delta-BHC
al12ha-Chlordane
gamma-Chlordane _
Technical Chlordane
4 4'-DDD
4 4'-DDE
4 4'-DDT
Di ~ldrin
Endosulfan I
Endosulfan II
Endosulfan Sulfate
Endrin
Endrin Aldeh::i::de
Endrin Ketone
He 2tachlor EQOXide
HeQt§.chlor
MethOX;iClor
Toxa12hene
COMMENTS:

OF= Dilution Factor
MDL= Method Detection Li mit
PQL = Practical Quantitation Limi t
Actual Detection Limit= PQL X OF
ND
ND
ND
ND
ND
ND
ND
ND
ND

0.061
ND
ND
ND
ND
ND
ND
ND
ND
ND
ND
ND
ND
J = Trace Concentration between MDL and PQL
PQL

0.001

0.005

0.001

0.020
ND = Below the Actual Detection Li m ·, o r non-detect e d Data Reviewe d and Approved by: _,./4 --- - CAL-DHS CERTIFICATE# 1555 MDL

0.0001

0.0002

0.0001

0.0002

0.0001

0.0005

0.0003

0.0001

0.0003

0.0002

0.0001

0.0004

0.0001

0.0003

0.0001

0.0100
DF
10 10
10 10
10 10
10 10
10 10
10 10
10 1 0
10 10
10 10
10 10
10 10
Enviro - Chem, Inc.
1214 E. Lexington Avenue, Pomona, CA 91766 Tel (909) 590-5905 Fax (909) 590-5907

PARAMETER
Aldrin
alpha - BHC
beta-BHC
g amma -BHC (Lindane )
delta-BHC
alpha -Chlordane
gamma-Chl ordane
Technical Chlordane
4 4 ' -DDD
4 4 ' -DDE
4 4'-DDT
Dieldri n
Endosulfan I
Endosul fa n II
Endosu l fan Su lfate
Endrin
Endrin Aldehyde
Endrin Ketone
Heptachlor Epoxide
Heptachlor
Methoxycl or
Toxaphene
COMMENTS:

OF= Dilution Factor
MDL= Method Detect ion Limit

SAMPLE RESULT
ND
ND
ND
ND
ND
ND
ND
ND
ND
0 . 079

0. 013
ND
ND
ND
ND
ND
ND
ND
ND
ND
ND
ND
PQL = Practical Quantitation Limit
Actua l Detection Limit= PQL X OF
J = Trace Concentration between MDL and PQL
PQL
0 . 001
0 . 00 1
0 . 001

0. 001

0.00 1

0.0 01
0 . 001

0.005

0.001

0.001
0 . 00 1
0 . 00 1
0 . 001
0 . 001

0.00 1

0.0 01

0. 001
0 . 001
0 . 001
0 . 00 1

0.001
0 . 020
ND= Below the Actual Detection or non-detected
Data Reviewed and Approved by: ________ _
CAL-OHS CERTIFICATE# 1555
MDL

0.0001
0 . 0002

0.000 1
0 . 000 1

0.00 02
0 . 0002
0 . 0001
0 . 0005
0 . 0003

0.0003

0.0001

0.0003

0.0002

0.000 1
0 . 0001
0 . 0004
0 . 0001

0.0001

0.0003

0.0001

0.0001
0 . 0100
DF
10 1 0
10 10
10 1 0
10 10
1 0
1 0
1 0
10 10
1 0
10 1 0
1 0
10 1 0
10 1 0
10 Enviro - Chem, Inc.
1214 E. Lexington Avenue, Pomona, CA 91766 Tel (909) 590-5905 Fax (909) 590-5907

PARAMETER SAMPLE RESULT
Aldrin
alQha-BHC
beta-BHC
gamma-BHC (Li ndane )
delta-BHC
alQha-Chlordane
g:amma-Chlordane
Technical Ch l ordane
4 4 ' -DDD
4 4'-DDE
4 4' - DDT
Dieldrin
Endosulfan I
Endosulfan II
Endosulfa n Sulfate
Endri n
Endrin Aldeh~de
Endrin Ketone
He2tachlor EQoxide
He12tachlor
Methox~c l or
Toxa,t2hene
COMMENTS:

OF = Dilution Factor
MDL= Method Detection Limi t
PQL = Practi c al Quantitation Limi t
Actual Detection Limit= PQL X OF
ND
ND
ND
ND
ND
ND
ND
ND
ND

0. 083

0. 017J
ND
ND
ND
ND
ND
ND
ND
ND
ND
ND
ND
J = Trace Concentration between MDL and PQL
PQL
0 . 001
0 . 001

0.001
0 . 001

0.001
0 . 001
0 . 001
0 . 005
0 . 00 1
0 . 001
0 . 001

0.001

0.001
0 . 00 1
0 . 001
0 . 001
0 . 001

0.00 1
0 . 001

0.001
0 . 00 1
0 . 02 0
ND = Below the Actual Detection = or non~dete cted
Data Reviewed and Approved by:_~£!__ _...,__ _ _____ _
CAL-OHS CERTIFICATE# 1555
MDL
0 . 0001
0 . 0002

0.0001

0.0002
0 . 0002
0 . 0001

0.0005

0.0003
0 . 0003
0 . 0001
0 . 0003
0 . 0002
0 . 0001
0 . 0001
0 . 0004
0 . 0001

0.0001
0 . 000 3
0 . 0001

0.0001

0.0100
DF
20 20
20 2 0
20 20
20 20
2 0
20 20
20 20
2 0
20 20
20 20
2 0
20 20
2 0
Enviro - Chem, Inc.
1214 E. Lexington Avenue, Pomona, CA 91766 Tel (909) 590-5905 Fax (909) 590-5907

METHOD BLANK REPORT
CUSTOMER: Leighton & Associates, Inc.
10532 Acacia, Suite B-6, Rancho Cucamonga, CA 91730
Tel: (909)484-2205 E-Mail: [email protected]
PROJECT: 13177.001
MATRIX:SOIL
SAMPLING DATE:06/16/21
REPORT TO:Mr. ROBERT HANSEN
DATE RECEIVED:06/17/21
DATE EXTRACTED: 0 6(17 /21
DATE ANALYZED:06/17/21
DATE REPORTED:06/23/21
METHOD BLANK FOR LAB I.D.:
210617-19 THROUGH -27, -29, -31, -33, -35, -37, -39, -41, -43, - 45 Organochlorine Pesticides Analysis
method: EPA 8081A
Unit: mg/Kg= Milligram Per Kilogram= PPM

PARAMETER SAMPLE RESULT
Aldrin
alQha-BHC
beta-BHC
g:arnma-BHC (Lindane }
delta-BHC
alQha-Chlordane
g amma-Chlordane
Technical Chlordane
4 4'-DDD
4 4'-DDE
4 4'-DDT
Dieldrin
Endosulfan I
Endosulfan II
Endosulfan Sulfate
Endrin
Endrin Aldehyde
Endrin Ketone
He:r;2tachlor E:r;2oxide
He12tachlor
Methoxyclor
Toxa.12hene
COMMENTS:

DF = Dilution Factor
MDL= Method Dete-ction Limit
PQL = Practical Quantitation Limit
Actual Detection Limit= PQL X OF
ND
ND
ND
ND
ND
ND
ND
ND
ND
ND
ND
ND
ND
ND
ND
ND
ND
ND
ND
ND
ND
ND
J = Trace Concentration between MDL and PQL
PQL

0.001

0.005

0.001

0.020
ND~ Below the Actual DetectionL~~ or non-detected
Data Reviewed and Approved by:_=L~-------
CAL-DHS CERTIFICATE# 1555
MDL DF

0.0001 l

0.0002 1

0.0001 1

0.0001 J

0.0002 1

0.0001 l

0.0005 1

0.0003 1

0.0001 l

0.0003 1

0.0002 1

0.0001 1

0.0001 l

0.0004 1

0.0001 l

0.0001 1

0.0003 1

0.0001 l

0.0001 1

0.0100 I
Enviro-Chem, Inc.
1214 E. Lexington Avenue, Pomona, CA 91766 Tel (909)590-5905 Fax (909)590-5907 EPA 8081 QA/QC Report
Matri : Soil/Solid/Liguid{Oil) Date Analyzed: 6/17~18/21 Unit mg/Kg (ppm)
Matrix S.Qike (M~}/Matrix SRike DuRlicate (MSDt
Sj2iked SamRle Lab I.D.: 210617-20 MS/MSD
Analyte S.R. spk cone MS %REC MSD %REC %RPO ACP %RPO ACP %REC Gamma-BHC 0.000 0.00500 0.00570 114% 0.00602 120% 5% 0-20% 70-130 Aldrin 0.000 0.00500 0.00508 102% 0.00545 109% 7% 0-20% 70-130 4,4-DDE 0.000 0.00500 0.00490 98% 0.00493 99% 1% 0-20% 70-130 Lab Control S[!ike (LCS} RecoverL;
1 Analvte spk cone LCS I, % REC ACP %REC
Gamma-BHC 0.00500 0.00584 J! 117% 75-125 I
Aldrin 0.00500 ' 0.00523 105% 75-125 -- I
-4,4-DDE 0.00500 I 0.00464 93% 75-125
Dieldrin 0.00500 0.00474 95% 75-125 --
Surrogate Recovery ACP% %REC %REC %REC %REC I %REC I %REC %REC Sample I.D. MB 210617-19 210617-20 210617-21 210617-22 210617-23 210617-24 Tetra-ch loro-meta-xylene 50-150 97% 96% 101% 102% 101% 100% 81% Decachlorobiphenyl 50-150 90% 81% 76% 76% 81% 126% 68%
-- . Surrogate Recoverv ACP% %REC %REC %REC %REC %REC %REC %REC Sample I.D. 210617-25 210617-26 210617-27 210617-29 210617-31 210617-33 210617-35 Tetra-chloro-meta-xylene 50-150 90% 89% 97% 101% 100% 100% 103% Decachlorobiphenyl 50-150 68% 79% 68% 68% 70% 77% 77%
Surroqate Recovery ACP% %REC %REC %REC %REC I %REC f %REC %REC Sample I.D. 210617-37 210617-39 210617-41 210617-43 210617-45 ' Tetra-ch loro-meta-xylene 50-150 102% 100% 105% I 103% 101% --- Decachlorobiphenyl 50-150 78% 76% 78% 77% 75% - -
S.R. = Sample Result • = Surrogate fail due to matrix interference (If Marked) spk cone = Spike Concentration Note: LCS, MS, MSD are in control therefore results are in control. ¾REC = Percent Recovery
ACP ¾RPO = Acceptable Percent RPO Range
ACP ¾REC = Acceptable Percent Ref ~ezy Ria•r19
Analyzed and Reviewed By; .
r r \
Final Reviewer:

I
Enviro - Chem, Inc.
1214 E. Lexington Avenue, Pomona, CA 91766 Tel (909) 590-5905 Fax (909) 590-5907

PARAMETER SAMPLE RESULT
Aldrin
al12ha-BHC
beta-BHC
fJ amma-BHC (Lindane )
delta-BHC
al2ha-Chlordane
g amma-Chlordane
Technical Chlordane
4 4'-000
4 4'-DDE
4 4'-DDT
Dieldrin
Endosulfan I
Endosulfan II
Endosulfan Sulfate
Endrin
Endrin Aldeh::z::de
Endrin Ketone
HeQtachlor EQoxide
He tachlor
Methox::.:clor
Toxa.12hene
COMMENTS:

OF= Dilution Factor
MDL= Method Detection Limit
PQL = Practical Quantitation Limit
Actual Detection Limit= PQL X OF
ND
ND
ND
ND
ND
ND
ND
ND
ND

0.031
ND
ND
ND
ND
ND
ND
ND
ND
ND
ND
ND
ND
J = Trace Concentration between MDL and PQL
PQL

0.001

0.005

0.001

0.020
ND = Below the Actual Detection L?)t or non-detected
Data Reviewed and Approved by= -~-------- CAL-DHS CERTIFICATE# 1555 MDL

0.0001

0.0002

0.0001

0.0002

0.0001

0.0005

0.0003

0.0001

0.0003

0.0002

0.0001

0.0004

0.0001

0.0003

0.0001

0.0100
DF
10 10
10 10
10 10
10 10
10 10
10 10
10 10
10 10
10 10
10 10
10 10
Enviro - Chem, Inc.
1214 E. Lexington Avenue, Pomona, CA 91766 Tel (909) 590-5905 Fax (909) 590-5907

LABORATORY REPORT
CUSTOMER: Leighton & Associates, Inc.
10532 Acacia, Suite B-6, Rancho Cucamonga, CA 91730
Tel: (909)484-2205 E-Mail : [email protected]
PROJECT : 13177.001
MATRIX: SOIL.

SAMPLING DATE:06/16/21
REPORT TO:Mr. ROBERT HANSEN
DATE RECEIVED:06/17/21
DATE EXTRACTED:06/17/21
DATE ANALYZED:06/18/21
DATE REPORTED:06/23/21
SAMPLE I. D.: AG12-0.5 11\B I . D.: 210617-49
Organochlorine Pesticides Analysis
method : EPA 8081A
Unit: mg/Kg= Milligram Per Kilogram= PPM

PARAMETER SAMPLE RESULT
Aldrin
alQha-BHC
beta-BHC
g:arnma-BHC (Lindane }
delta-BHC
alr2ha-Chlordane
gamma-Chlordane
Technical Chlordane
4 4'-DDD
4,4'-DD!:j
4 4'-DDT
Dieldrin
Endosulfan I
Endosulfan II
Endosulfan Sulfate
Endrin
Endrin Aldeh~de
Endrin Ketone
HeQtachlor Egoxide
HeQtachlor
Methox:)'.'.clor
Toxar2hene
COMMENTS:

OF= Dilution Factor
MDL= Method Detection Limit
PQL = Practical Quantitation Limit
Actual Detection Limit= PQL X OF
ND
ND
ND
ND
ND
ND
ND
ND
ND

0.046
ND
ND
ND
ND
ND
ND
ND
ND
ND
ND
ND
ND
J = Trace Concentration between MDL and PQL
PQL

0.001

0.005

0.001

0.020
ND~ Below the Actual Detection ?:tor non-detected
Data Reviewed and Approved by: ......,t~~--------
CAL-DHS CERTIFICATE# 1555
MDL

0.0001

0.0002

0.0001

0.0002

0.0001

0.0005

0.0003

0.0001

0.0003

0.0002

0.0001

0.0004

0.0001

0.0003

0.0001

0.0100
DF
10 10
10 10
10 10
10 10
10 10
10 10
10 10
10 10
10 10
10 10
10 10
Enviro - Chem, Inc.
1214 E. Lexington Avenue, Pomona, CA 91766 Tel (909) 590-5905 Fax (909) 590-5907

PARAMETER SAMPLE RESULT
Aldrin
al12ha-BHC
beta-BHC
g:arnma-BHC (Lindane }
delta-BHC
al12ha-Chlordane
g amma-Chlordane
Technical Chlordane
4 4'-DDD
4 , 4'-DD;[:;
4 4'-DDT
Dieldrin
Endosulfan I
Endosulfan II
Endosulfan Sulfate
Endrin
Endrin Aldehyde
Endrin Ketone
HeQtachlor E2oxide
Hei;2tachlor
Methoxy:clor
Toxar2hene
COMMENTS:

OF= Dilution Factor
MDL= Method Detection Limit
PQL = Practical Quantitation Limit
Actual Detection Limit= PQL X OF
ND
ND
ND
ND
ND
ND
ND
ND
ND

0.002
ND
ND
ND
NQ
ND
ND
ND
ND
ND
ND
ND
ND
J = Trace Concentration between MDL and PQL
PQL

0.001

0.005

0.001

0.020
ND~ Below the Actual Detection 7 it or non-detected
Data Reviewed and Approved by: ~t!!_ _. _______ _
CAL-OHS CERTIFICATE# 1555
:tvIDL

0.0001

0.0002

0.0001

0.0002

0.0001

0.0005

0.0003

0.0001

0.0003

0.0002

0.0001

0.0004

0.0001

0.0003

0.0001

0.0100
DF
2 2
2 2
2 2
2 2
2 2
2 2
2 2
2 2
2 2
2 2
2 2
Enviro - Chem, Inc.
1214 E. Lexington Avenue, Pomona, CA 91766 Tel (909) 590-5905 Fax (909) 590-5907

PARAMETER SAMPLE RESULT
Aldrin
algha-BHC
beta-BHC
gamma-BHC (Lindane)
delta-BHC
algha-Chlordane
o amma-Chl ordane
Technical Chlordane
4 4 '-DDD
4 4 ' -DDE
4 4'-DDT
Dieldrin
Endosulfan I
Endosulfan II
Endosulfa n Sulfate
Endrin
Endrin Al dehyde
Endrin Ketone
HeQtachl or EQoxide
HeQtachlor
Methoxyclor
Toxar2hene
COMMENTS:

OF= Dilution Factor
MDL= Me t hod Detection Limit
PQL = Pract i cal Quantitation Limit
Actual De tection Limit= PQL X OF
ND
ND
ND
ND
ND
ND
ND
ND
ND

0.005
ND
ND
ND
ND
ND
ND
ND
ND
ND
ND
ND
ND
J = Trace Concentration between MDL and PQL
PQL
0 . 001
0 . 001
0 . 001

0.001
0 . 001
0 . 001
0 . 001
0 . 005
0 . 001

0.001
0 . 001
0 . 001
0 . 001
0 . 001
0 . 001
0 . 001
0 . 001
0 . 001
0 . 001
0 . 001

0.001
0 . 020
ND = Be l ow the Actual Detection Limit or non-detected Data Reviewed and Approved by:____._~~(/_i ~'-------
CAL-DHS CERTIFICATE# 1555
MD L

0.0001
0 . 0002
0 . 0001
0 . 0001

0.0002
0 . 0002

0.0001

0.0005
0 . 0003

0.0003
0 . 0001
0 . 0003
0 . 0002

0.0001
0 . 0001
0 . 0004
0 . 0001
0 . 0001
0 . 0003

0.0001
0 . 0001
0 . 0100
DF
2 2
2 2
2 2
2 2
2 2
2 2
2 2
2 2
2 2
2 2
2 2
Enviro - Chem, Inc.
1214 E. Lexington Avenue, Pomona, CA 91766 Tel (909) 590-5905 Fax (909) 590-5907

PARAMETER SAMPLE RESULT
Aldrin
al12ha-BHC
beta - BHC
g amma-BHC (Lindane l
delta-BHC
al12ha-Chlordane
g amma-Chl ordane
Technical Chlordane
4 4'-DDD
4 4'-DDE
4 4'-DDT
Di eldrin
Endosulfan I
Endosulfan II
Endosulfan Sulfate
Endri n
Endrin Aldehyde
Endrin Ketone
He12tachlor E12oxide
He12tachlor
Methoxyclor
Toxa,12hene
COMMENTS:

OF= Dilution Factor
MDL= Me t hod Detection Limit
PQL = Practi cal Quantitation Limit
Actual De tection Limit= PQL X OF
ND
ND
ND
ND
ND
ND
ND
ND
ND
0 .114
ND
ND
ND
ND
ND
ND
ND
ND
ND
ND
ND
ND
J = Trace Concentration between MDL and PQL
PQL
0 . 001

0.001
0 . 001
0 . 001

0. 001
0 . 001

0.001

0.005
0 . 001

0.001

0.001
0 . 001
0 . 001
0 . 001

0. 001

0. 001
0 . 001

0.001

0.001
0 . 001
0 . 001
0 . 02 0
ND = Below the Actual Detection Limit or non-detected
Data Reviewed and Approved by:_~/4~,';1, ~A ______ _
CAL-OHS CERTIFICATE# 1555
MDL

0.0001
0 . 0002
0 . 0001
0 . 0001
0 . 0002
0 . 00 02
0 . 0001

0.0005
0 . 0003
0 . 0003

0.0001
0 . 0003

0.0002
0 . 0001
0 . 000 1
0 . 0004
0 . 0001
0 . 0001
0 . 0003
0 . 0001

0.0001

0.0100
DF
50 50
50 50
50 5 0
50 50
50 50
50 50
50 50
50 50
50 50
50 50
50 50
Enviro - Chem, Inc.
1214 E. Lexington Avenue, Pomona, CA 91766 Tel (909) 590-5905 Fax (909) 590-5907

PARAMETER SAMPLE RESULT
Aldrin
alQha-BHC
beta-BHC
g amrna-BHC (Lindane l
delta-BHC
alr2ha-Chlordane
g amma-Chlordane
Technical Chlordane
4 4'-DDD
4 4'-DDE
4 4'-DDT
Dieldrin
Endosulfan I
Endosulfan II
Endosulfan Sulfate
Endrin
Endrin Aldeh::tde
Endrin Ketone
HeQtachlor E2oxide
He12tachlor
Methoxyclor
Toxa12hene
COMMENTS:

OF= Dilution Factor
MDL= Method Detection Limit
PQL = Practical Quantitation Limit
Actual Detection Limit= PQL X OF
ND
ND
ND
ND
ND
ND
ND
ND
ND

0.056
O.OOSJ
ND
ND
ND
ND
ND
ND
ND
ND
ND
ND
ND
J = Trace Concentration between MDL and PQL
PQL

0.001

0.005

0.001

0.020
ND= Below the Actual Detection ~rft or non-detected
Data Reviewed and Approved by: __ /// _______ _
CAL-OHS CERTIFICATE# 1555
MDL

0.0001

0.0002

0.0001

0.0002

0.0001

0.0005

0.0003

0.0001

0.0003

0.0002

0.0001

0.0004

0.0001

0.0003

0.0001

0.0100
DF
10 10
10 10
10 10
10 10
10 10
10 10
10 10
10 10
10 10
10 10
10 10
Enviro - Chem, Inc.
1214 E. Lexington Avenue, Pomona, CA 91766 Tel (909) 590-5905 Fax (909) 590-5907

PARAMETER
Aldrin
alpha-BHC
beta-BHC
g arnma-BHC (Lindane l
delta- BHC
alpha-Chlordane
g amma - Chlordane
Technical Chlordane
4 4 ' -DDD
4 4 ' -DDE
4 4 ' -DDT
Di eldrin
Endosulfa n I
Endos u l fan I I
Endosulfan Su lfate
Endrin
Endrin Aldehyde
Endrin Ke tone
Heptachl o r Epoxide
Heptachlor
Methoxycl or
Toxaphene
COMMENTS:

DF = Dil u tion Fact or
MDL = Method Detection Limit

SAMPLE RESULT
ND
ND
ND
ND
ND
ND
ND
ND
ND

0.046

0.007J
ND
ND
ND
ND
ND
ND
ND
ND
ND
ND
ND
PQL = Practical Qu anti tation Limit
Actual Detection Limit= PQL X OF
J = Trace Concentr ation b e twe en MDL and PQL
PQL

0.001
0 . 001
0 . 001
0 . 001
0 . 001

0.001
0 . 001
0 . 00 5
0 . 001

0.001
0 . 001
0 . 001
0 . 001
0 . 001
0 . 001

0. 001
0 . 001
0 . 001
0 . 001
0 . 001
0 . 001
0 . 020
ND= Below the Ac tua l Detection o r non-detected
Data Reviewed and Approved by:_---'---'--------
CAL-DHS CERTIFICATE# 1555
~L
0 . 0001
0 . 0002

0.0001
0 . 0001

0.0002
0 . 0002

0.0001
0 . 0005
0 . 0003
0 . 0003

0.000 1

0.0003
0 . 0002
0 . 0001
0 . 0001
0 . 000 4
0 . 0001
0 . 000 1
0 . 0003

0.0001

0.0001
0 . 0100
DF
10 10
10 10
10 10
10 10
10 10
10 10
10 10
10 1 0
10 10
10 10
10 10
Enviro - Chem, Inc.
1214 E. Lexington Avenue, Pomona, CA 91766 Tel (909) 590-5905 Fax (909) 590-5907

PARAMETER SAMPLE RESULT
Aldrin
alQha-BHC
beta-BHC
g amma -BHC (Lindane l
delta-BHC
alQha - Ch l ordane
gamma-Chlordane
Technical Ch l ordane
4 4 '-00D
4 4 ' -DDE
4 4 ' -DDT
Die l drin
Endosulfan I
Endosulfan II
Endosulfa n Sulfate
Endrin
Endrin Al deh::i;:de
Endrin Ketone
HeQtachlor EQOXide
He12tachlor
Methox~clor
Toxa12hene
COMMENTS:

OF = Dilution Fact or
MDL= Method Dete c tion Limit
PQL = Practical Quant i tation Li mit
Actual Detection Limit= PQL X OF
ND
ND
ND
ND
ND
ND
ND
ND
ND

0. 022
ND
ND
ND
ND
ND
ND
ND
ND
ND
ND
ND
ND
J = Trace Conce ntration between MDL and PQL
PQL
0 . 001

0.001

0.001
0 . 001

0.001

0.005
0 . 001

0.001
0 . 001
0 . 001

0.001
0 . 001
0 . 001
0 . 001
0 . 001
0 . 001
0 . 001
0 . 001
0 . 001
0 . 02 0
ND= Below t he Actual De tection i it or non-detected
Data Reviewed and Approved by: _ _ ?_~ ______ _ CAL-OHS CERTIFICATE# 1555 MDL

0.0001

0.000 2

0.0001
0 . 0001
0 . 0002

0.0002

0.0001

0.0005
0 . 0003
0 . 0003

0.0001

0.0003

0.0002
0 . 0001

0.0001

0.0004

0.0001

0.0 00 3
0 . 0001

0.0001
0 . 0100
DF
1 0
10 10
1 0
10 10
10 10
10 10
10 10
10 10
10 10
10 10
10 10
10 10
Enviro - Chem, Inc.
1214 E. Lexington Avenue, Pomona, CA 91766 Tel (909) 590-5905 Fax (909) 590-5907

PARAMETER SAMPLE RESULT
Aldrin
algha - BHC
beta- BHC
g:amma - BHC (Lindane }
de l ta-BHC
al12ha-Chl o r dane
g amma-Ch l ordane
Technical Chlordane
4 4 ' -DDD
4 4'-DDE
4 4'-DDT
Dieldrin
Endosul fan I
Endosulfan II
Endosulfan Sulfate
Endrin
Endrin Al deh::ide
Endrin Ke tone
He12tachlor E2oxide
He12tachlor
Methox::iclor
Toxa12hene
COMMENTS:

DF = Dil u tion Factor
MDL= Method Detection Limit
PQL = Practical Quantitation Limit
Actual Detecti on Limit= PQL X OF
ND
ND
ND
ND
ND
ND
ND
ND
ND

0.109
ND
ND
ND
ND
ND
ND
ND
ND
ND
ND
ND
ND
J = Trace Concentration between MDL and PQL
PQL

0.001
0 . 001
0 . 001
0 . 001
0 . 001
0 . 001
0 . 001

0.005
0 . 001
0 . 001
0 . 001
0 . 00 1
0 . 001
0 . 001
0 . 001
0 . 001
0 . 001
0 . 001
0 . 001
0 . 001

0.001
0 . 020
ND~ Be l ow the Actual Detection p or non detected
Data Reviewed and Approved by: _ _ t:{!_ ~ -------
CAL-DHS CERTIFI CATE# 1555
MDL
0 . 0001
0 . 0002
0 . 0001

0.0001

0.0002

0.0002
0 . 0001
0 . 0005

0.0003

0.0003
0 . 0001
0 . 0003
0 . 0002
0 . 0001
0 . 0001
0 . 0004
0 . 0001
0 . 0001
0 . 0003

0.0001

0.0001
0 . 0100
DF
50 50
50 50
50 50
50 50
50 50
50 50
50 50
50 50
50 50
50 50
50 50
Enviro - Chem, Inc.
1214 E. Lexington Avenue, Pomona, CA 91766 Tel (909) 590-5905 Fax (909) 590-5907

PARAMETER SAMPLE RESULT
Al drin
a lQha - BHC
beta-BHC
g amma - BHC (Lindane)
de l ta- BHC
algha-Chlordane
gamma-Chlordane
Technica l Chlordane
4 4' -DDD
4 4'-DDE
4 4 ' -DDT
Di eldrin
Endosulfan I
Endosulfan II
Endosulfan Sulfate
End rin
Endrin Aldeh;ide
Endrin Ketone
HeQtachl o r E~ox ide
He12tachlor
Methoxyclor
Toxa:r2hene
COMMENTS:

OF= Dilution Fact or
MDL= Me t hod Detection Limit
PQL = Pra ctical Quant itation Limi t
Actual Detection Limit = PQL X OF
ND
ND
ND
ND
ND
ND
ND
ND
ND

0.012
ND
ND
ND
ND
ND
ND
ND
ND
ND
ND
ND
ND
J = Trace Concentration between MDL and PQL
ND= Below the Actual Detection
Data Reviewed and Approved by:

CAL-OHS CERTIFICATE# 1555
PQL

0.001
0 . 001
0 . 00 1
0 . 001
0 . 001

0.001

0.005
0 . 001

0.001

0.001
0 . 00 1
0 . 001
0 . 001

0.001
0 . 00 1

0.001

0.001
O. OOl

0.001
0 . 001

0.020
MDL
0 . 0001

0. 0002
0 . 0001
0 . 0001

0. 0002
0 . 0002
0 . 0001
0 . 0005
0 . 0003

0.0003
0 . 0001

0. 0003
0 . 0002

0.0001
0 . 0001
0 . 0004

0.0001
0 . 0001
0 . 0003
0 . 0001

0.0001
0 . 0100
DF
1 0
10 10
10 1 0
10 10
10 10
10 10
10 10
10 10
10 10
10 10
10 10
10 Enviro - Chem, Inc.
1214 E. Lexington Avenue, Pomona, CA 91766 Tel (909) 590-5905 Fax (909) 590-5907

METHOD BLANK REPORT
CUS TOMER: Leighton & Associates, Inc.
10532 Acacia, Suite B-6, Rancho Cucamonga, CA 91730
Tel: (909)484-2205 E-Mail: [email protected]
PROJ ECT : 13177.001
MATRIX:SOIL
SAMPLING DATE:0 6 /16/ 2 1
REPORT TO: Mr . ROBERT HANSEN
DATE RECEIVED: 06 /1 7 / 21
DATE EXTRACTED:06/17/ 2 1
DATE ANAL YZ ED: 0 6/1 8 / 2 1
DATE RE PORTED : 06 / 23/21
METHOD BLANK FOR LAB I.D.:
210617-47, -49, -51, -52, -53, -55, -57, -59, -61, - 63 - ------------------------------------------------ Organochlorine Pesticides Analysis method: EPA 8081A
Unit: mg/Kg= Milligram Per Kilogram= PPM

PARAMETER SAMPLE RESULT
Aldrin
a l_Qha-BH£;;
beta-BHC
g:a rnma - BHC (Lindane }
delta-BHC
al12ha-Chlordane
g amma-Ch l ordane
Technical Chlordane
4 4 '-DDD
4 4 ' -DDE
4 4' - DDT
Dieldrin
Endosulfan I
Endosulfa n II
Endosul fan Sulfate
Endrin
Endrin Aldeh:ide
Endrin Ketone
He2 t ach l or EQOXide
He12tach l o r
Methox~c l or
Toxa12hene
COMMENTS:

OF = Di l u tion Factor
MDL= Method Detection Limit
PQL = Pra ctical Quantitation Limit
Actual Detection Limit= PQL X OF
ND
ND
ND
ND
ND
ND
ND
ND
ND
ND
ND
ND
ND
ND
ND
ND
ND
ND
ND
ND
ND
ND
J = Trace Concentration between MDL and PQL
PQL

0.001
0 . 001

0.001
0 . 001
0 . 001
0 . 001

0.00 1
0 . 005
0 . 001
0 . 001
0 . 001

0.001
0 . 001

0.001
0 . 001
0 . 001

0.001

0.001
0 . 001
0 . 001
0 . 001

0.0 2 0
ND = Be l ow the Ac tual De tection Lmt or non-detec ted Data Reviewed and Approved by: _ u~V_ , _ ____ _
CAL-OHS CERTIFICATE# 1555 1
MDL DF
0 . 0001 1
0 . 0002 1
0 . 0001 1
0 . 000 1 1

0.0002 1
0 . 0002 1
0 . 0001 1
0 . 0005 1
0 . 0003 1
0 . 0003 1
0 . 0001 1

0.0003 1

0.0002 1
0 . 0001 1
0 . 0001 1
0 . 0004 1

0.0001 1
0 . 0001 1

0.0003 1

0.0001 1
0 . 0001 1
0 . 0100 1
Enviro-Chem, Inc.
1214 E. Lexington Avenue, Pomona, CA 91766 Tel (909)590-5905 Fax (909)590-5907 EPA 8081 QA/QC Report
Ma rix. Soil/Solid/Liguid(Oill Date Analyzed : 6/18/2021 Unit: mg/Kg (ppm)
Matrix Soike (MS)/Matrix Soike Duolicate (MSm
S12iked Sam~le Lab l:D.: 210617-LCS 1/2
Analyte S.R. spk cone MS %REC MSD I
I
, %REC %RPO ACP %RPO ACP %REC
Gamma-BHC Ci.ODO 0.00500 I 0.00568 114% 0.00575 115% 1% 0-20% 70-130 ' Aldrin 0.000 0.00500 0.00512 102% 0.00516 103% 1% 0-20% 70-130 4,4-DDE 0.000 0.00500 0.00479 96% 0.00504 101% 5% 0-20% 70-130 Lab Control Seike {LCS} Recoverv:

Analyte spk cone LCS %REC ACP %REC
Gamma-BHC I 0.00500 0.00581 116% 75-125
Aldrin 0.00500 : 0.00522 -104% 75-125
A,4-DDE 0.00500 • 0.00473 95% 75-125
Dieldrin 0.00500 I 0.00480 96% I 75-125
Surrogate Recovert ACP% %REC %REC %REC %REC %REC %REC %REC Sample I.D. MB 210617-47 210617-49 210617-51 210617-52 210617-53 210617-55 Tetra-ch lore-meta-xylene 50-150 103% 102% 101% 98% 100% 101% "104% ~ Decachlorobiphenyl 50-150 76% I 77% 76% ' 72% 72% 73% 80% Surrogate Recovery ACP% %f{EC %REC %REC %REC %REC %REC %REC -- Sample I.D. 210617-57 210617-59 I 210617-61 210617-63 Tetra-ch loro-meta-xylene 50-150 I 102% 104% 101% 104% - .

Decachlorobiphenyl 50-150 t 76% 78% 73% 78%
1 Surrogate Recovery • ·-
ACP% %REC %REC %REC %REC %REC %REC %REC
Sample 1.D.

Tetra-chloro-meta-xylene 50-150 '
Decachlorobiphenyl 50-150 I - '
S.R. = Sample Result • = SutTogate fail due to matrix interference (If Marked) spk cone = Spike Concentration Note: LCS, MS, MSD are in control therefore results are in control. %REC = Percent Recovery
ACP %RPO = Acceptable Percent RPD Range
ACP %REC = Acceptable Percerrt RecJ:ivery Range
_i /
Analyzed and Reviewed By:
t
Final Reviewer: 0/f)
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CHAIN OF CUSTODY REt :ORD
Date: ~ WHITE WITH SAMPLE • YELLOW TO CLIENT Page _!j__ ot ___,(d,___ Enviro - Chem, Inc.
1214 E. Lexington Avenue, Pomona, CA 91766 Tel (909) 590-5905 Fax (909) 590-5907 Date: July 6, 2021
Mr. Robert Hansen
Leighton & Associates, Inc.
10532 Acacia, Suite B-6
Rancho Cucamonga, CA 91730
Tel: (909)484-2205 E-Mail: [email protected]
Project: 13177.001
Lab I.D.: 210617-19 through -64
Dear Mr. Hansen:

The additional TPH-CCID results for the soil samples, received by our lab on June 17, 2021, are attached. The samples were received chilled, intact, accompanying chain of custody and also stored per the EPA protocols.

Trace concentrations between the MDL and the PQL have been reported with a "J" flag indicator.

Enviro-Chem appreciates the opportunity to provide you and your company this and other services. Please do not hesitate to call us if you have any questions.

Sincerely,
jJ
Curtis Desilets
Vice President/Program Manger
An Wang
Laboratory Manager
Enviro - Chem, Inc.
1214 E. Lexington Avenue, Pomona, CA 91766 Tel (909) 590-5905 Fax (909) 590-5907

TOTAL PETROLEUM HYDROCARBONS(TPH) - CARBON CHAIN ANALYSIS METHOD: EPA 8015B
UNIT: mg/Kg= MILLIGRAM PER KILOGRAM= PPM
SAMPLE I.D. LAB I.D. C4-C10
AG4-0.5' 210617-33
AGS-0.5' 210617-41
AGl0-0.5' 210617-45
AG14-0.5' 210617-25
AG16-0.5' 210617-59

METHOD BLANK
MDL
PQL

COMMENTS
C4-C10 = GASOLINE RANGE
C10-C28 = DIESEL RANGE
C28-C35 = MOTOR OIL RANGE
OF= DILUTION FACTOR
PQL = PRACTICAL QUANTITATION LIMIT
ACTUAL DETECTION LIMIT= OF X PQL
ND
ND
ND
ND
ND
ND
5 10
C10-C28

8.43J *

7.58J *

8.29J *

8.70J *

7.73J *
NO
5 1,0
ND= NON-DETECTED OR BELOW THE ACTUAL DETECTION LIMIT
C28-C35
ND
ND
ND
ND
ND
ND
25 50
DF
1 1
1 .
1 .
1 1

PEAKS IN DIESEL RANGE BUT CHROMATOGRAM DOES NOT MATCH THAT OF DIESEL STANDARD L j
Data Reviewed and Approved by:_~,0~' __ ,_,,_· ___ _ _
CAL-OHS ELAP CERTIFICATE No.: 1555
Software Version
Sample Name
Instrument Name
RackNial
Sample Amount
Cycle

6.3.4.0700
210617-33
GC-1
0/33

1.000000
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Result File: E:\GC DATA\GC-l\12021\12107\1210701\A034.rst Sequence File: E:\GC DATA\GC-1112021112107\121070111210701.seq >
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Name JuV'sec] Amount
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C10-C28
C28-C35
26107
232511
321695
5,6

84.3 170.8
580313 260.6
,IJ 4 0
Date
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Channel
Operator
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7/212021 4:34:11 PM
7/2/202110:37:03 AM
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7/212021 4:34:15 PM
7/21202110:53!53 AM
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1.000000
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Name [uV'secj Amount
C4-C10
C10-C28
C28-C35
28008
117972
107731
liO
1S8
11 ,9
253712 193.8
Time[min)
8015 Results
Software Vers· n
Sample Name
Instrument Name
RackNial
Sample Amount
Cycle
Result File: E:IGC OATA\GC-I1I20211I210711210701\A036.rst Sequence File : E:\GC OATA\GC-I1I20211I21071I2107011I210701.seq QJ
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7/2/2021434:18 PM
7/2/2021 11 :10:42 AM
A
tcprocess

1.000000

Page 1 of 1 ends

rmrm.1111 111 111111 Ill 1111111111:1111111 ◄ 1111 11 1111 111h mrnn, 11 II I 111T Ill ii I I Irr 111 I 11111 11 IIJl II 1rmnn: 111 Ill II I I 11111 Component Area Adjusted
Name [uV'sec] Amount
C4~C10
C10~C28
C28~C35
35689
214501
161054
411244 217.4
rfl I I I JI I I I J 111 11 11 11) 111 11111
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801 s Results
Software Version
Sample Name
Instrument Name
RackNial
Sample Amount
Cycle

6.3.4.0 21061
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0/36

1.000000
. 9
Result File: E:IGC DATA\GC-I1I2021\I2107\I210701\A037.rst Sequence File: E:IGC DATA\GC-I1I20211I21071I2107011I210701.seq 0 Component Area Adjusted
Name [uV'sec] Amount
C4~C10
C10~C28
C28~C35
39153
269878
166253
87 87.Q
128.0
475284 223.7
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Channel
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6.0 Time [min]
8015 Results
7/2/2021 4:34:21 PM
7/2/2021 11 :27:38 AM
A
tcprocess

1.000000
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Page 1 of 1 ends

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Date
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Channel
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7/2/2021 4:34:23 PM
7/2/202111 :44:27 AM
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Name [uV'sec] Amount
C4-C10
C10-C28
C28-C35
23122
137949
187378

4.9 77.J
133.g
348449 216.0
Time [min]
8015 Results
Enviro Chem, Inc
1214 E. Lexington Avenue, Pomona, CA 91766 Tel (909)590-5905 Fax (909)590-5907 80158 QA/QC Report
Date Analyzed: 7/2/2021 Units: mg/Kg (ppm)
Matrix: Soi I/Sol id/SI udge/Lig u id
Matrix Spike (MS)/Matrix Spike Duplicate (MSD)
Spiked Sample Lab I.D.: 210617-33 MS/MSD
Analvte ! SR spk cone MS %MS MSD %MSD %RPO I ACP %MS I ACP RPO C10~C28 Range 0.0 200 217 109% 210 105% 3% I 75-125 l 0-20% LCS STD RECOVERY:

Analyte spk cone LCS % REC ACP
C10~C28 Range 200 221 111% 75-125
Analyzed and Reviewed By: --...... 4-~-, __ _
Final Reviewer: __ Q_-_____ _
Enviro-Chem Inc. Laboratories Turnaround Time ~ _ _ . · .. , o Same Day ~ · M 1sc.JPO# 1214 E. Lexington Avenue, 0 24 Hours (f) ;;:

P CA 91766 O 48 Hours a: t\..
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CHAIN OF CUSTODY RECORD
WHITE WITH SAMPLE • YELLOW TO CLIENT Page _L_of_q. ____ _ Enviro-Chem Inc. Laboratories Turnaround Time , 0 Same Day 1214 E. Lexington Avenue, 0 24 Hours
C · 0 48 Hours Pomona, A 91766 o 1
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CA-OHS ELAP CERTIFICATE #1555

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CHAIN OF CUSTODY RECORD
Pttce : WHITE WlTH SAMPLE• YELLOW TO Cl/ENT Page ---2_ of _Jt ____ _ Appendix I
GBA Geoenvironmental Report
~ Leighton a verdantas company
Geoenvironmental Report
Geoenvironmental studies are commissioned to gain
information about environmental conditions on and beneath the surface of a site. The more comprehensive the study, the more reliable the assessment is likely to be. But remember:

Any such assessment is to a greater or lesser extent based on professional opinions about conditions that cannot
be seen or tested. Accordingly, no matter how many data are developed, risks created by unanticipated conditions will always remain. Have realistic expectations. Work with your geoenvironmental consultant to manage known and
unknown risks. Part of that process should already have been accomplished, through the risk allocation provisions you and your geoenvironmental professional discussed and included in your contract’s general terms and conditions.

This document is intended to explain some of the concepts that may be included in your agreement, and to pass along information and suggestions to help you manage your risk.

Beware of Change; Keep Your
Geoenvironmental Professional Advised
The design of a geoenvironmental study considers a variety of factors that are subject to change. Changes can undermine the applicability of a report’s findings, conclusions,
and recommendations. Advise your geoenvironmental
professional about any changes you become aware of.

Geoenvironmental professionals cannot accept responsibility or liability for problems that occur because a report fails to consider conditions that did not exist when the study was designed. Ask your geoenvironmental professional about the types of changes you should be particularly alert to. Some of the most common include:
• modification of the proposed development or
ownership group,
• sale or other property transfer,
• replacement of or additions to the financing entity,
• amendment of existing regulations or introduction
of new ones, or
• changes in the use or condition of adjacent property.

Should you become aware of any change, do not rely on a geoenvironmental report. Advise your geoenvironmental
professional immediately; follow the professional’s advice.

Recognize the Impact of Time
A geoenvironmental professional’s findings,
recommendations, and conclusions cannot remain valid
indefinitely. The more time that passes, the more likely it is that important latent changes will occur. Do not rely on a geoenvironmental report if too much time has
elapsed since it was completed. Ask your environmental
professional to define “too much time.” In the case of
Phase I Environmental Site Assessments (ESAs), for
example, more than 180 days after submission is generally considered “too much.”
Prepare To Deal with Unanticipated
Conditions
The findings, recommendations, and conclusions of a Phase I ESA report typically are based on a review of historical information, interviews, a site “walkover,” and other forms of noninvasive research. When site subsurface conditions are not sampled in any way, the risk of unanticipated conditions is higher than it would otherwise be.

While borings, installation of monitoring wells, and
similar invasive test methods can help reduce the risk of unanticipated conditions, do not overvalue the effectiveness of testing. Testing provides information about actual conditions only at the precise locations where samples are taken,
and only when they are taken. Your geoenvironmental
Important Information about This
professional has applied that specific information to develop a general opinion about environmental conditions. Actual conditions in areas not sampled may differ (sometimes
sharply) from those predicted in a report. For example, a site may contain an unregistered underground storage tank that shows no surface trace of its existence. Even conditions in areas that were tested can change, sometimes suddenly, due to any number of events, not the least of which include occurrences at adjacent sites. Recognize, too, that even some conditions in tested areas may go undiscovered, because the tests or analytical methods used were designed to detect only those conditions assumed to exist.

Manage your risks by retaining your geoenvironmental
professional to work with you as the project proceeds.

Establish a contingency fund or other means to enable your geoenvironmental professional to respond rapidly, in order to limit the impact of unforeseen conditions. And to help prevent any misunderstanding, identify those empowered
to authorize changes and the administrative procedures that should be followed.

Do Not Permit Any Other Party To Rely
on the Report
Geoenvironmental professionals design their studies and prepare their reports to meet the specific needs of the clients who retain them, in light of the risk management methods that the client and geoenvironmental professional agree to, and the statutory, regulatory, or other requirements that apply. The study designed for a developer may differ sharply from one designed for a lender, insurer, public agency...or even another developer. Unless the report specifically states otherwise, it was developed for you and only you. Do not unilaterally permit any other party to rely on it. The report and the study underlying it may not be adequate for another party’s needs, and you could be held liable for shortcomings your geoenvironmental professional was powerless to
prevent or anticipate. Inform your geoenvironmental
professional when you know or expect that someone else— a third-party—will want to use or rely on the report. Do not permit third-party use or reliance until you first confer with the geoenvironmental professional who prepared the report. Additional testing, analysis, or study may be required and, in any event, appropriate terms and conditions should be agreed to so both you and your geoenvironmental
professional are protected from third-party risks. Any party who relies on a geoenvironmental report without the express written permission of the professional who prepared it and the client for whom it was prepared may be solely liable for any problems that arise.

Avoid Misinterpretation of the Report
Design professionals and other parties may want to rely on the report in developing plans and specifications. They need to be advised, in writing, that their needs may not have been considered when the study’s scope was developed,
and, even if their needs were considered, they might
misinterpret geoenvironmental findings, conclusions, and recommendations. Commission your geoenvironmental
professional to explain pertinent elements of the report to others who are permitted to rely on it, and to review any plans, specifications or other instruments of professional service that incorporate any of the report’s findings,
conclusions, or recommendations. Your geoenvironmental
professional has the best understanding of the issues
involved, including the fundamental assumptions that
underpinned the study’s scope.

Give Contractors Access to the Report
Reduce the risk of delays, claims, and disputes by giving contractors access to the full report, providing that it is accompanied by a letter of transmittal that can protect you by making it unquestionably clear that: 1) the study was not conducted and the report was not prepared for purposes
of bid development, and 2) the findings, conclusions,
and recommendations included in the report are based
on a variety of opinions, inferences, and assumptions
and are subject to interpretation. Use the letter to also advise contractors to consult with your geoenvironmental professional to obtain clarifications, interpretations, and guidance (a fee may be required for this service), and
that—in any event—they should conduct additional studies to obtain the specific type and extent of information each prefers for preparing a bid or cost estimate. Providing access to the full report, with the appropriate caveats, helps prevent formation of adversarial attitudes and claims of concealed or differing conditions. If a contractor elects to ignore the warnings and advice in the letter of transmittal, it would do so at its own risk. Your geoenvironmental professional should be able to help you prepare an effective letter.

Do Not Separate Documentation
from the Report
Geoenvironmental reports often include supplemental
documentation, such as maps and copies of regulatory
files, permits, registrations, citations, and correspondence with regulatory agencies. If subsurface explorations were performed, the report may contain final boring logs and copies of laboratory data. If remediation activities occurred on site, the report may include: copies of daily field reports; waste manifests; and information about the disturbance
of subsurface materials, the type and thickness of any fill placed on site, and fill placement practices, among other types of documentation. Do not separate supplemental
documentation from the report. Do not, and do not permit any other party to redraw or modify any of the supplemental documentation for incorporation into other professionals’ instruments of service.

Understand the Role of Standards
Unless they are incorporated into statutes or regulations, standard practices and standard guides developed by the American Society for Testing and Materials (ASTM) and
other recognized standards-developing organizations
(SDOs) are little more than aspirational methods agreed to by a consensus of a committee. The committees that develop standards may not comprise those best-qualified to establish methods and, no matter what, no standard method can
possibly consider the infinite client- and project-specific variables that fly in the face of the theoretical “standard conditions” to which standard practices and standard guides apply. In fact, these variables can be so pronounced that geoenvironmental professionals who comply with every
directive of an ASTM or other standard procedure could
run afoul of local custom and practice, thus violating the standard of care. Accordingly, when geoenvironmental
professionals indicate in their reports that they have
performed a service “in general compliance” with one
standard or another, it means they have applied professional judgement in creating and implementing a scope of service designed for the specific client and project involved, and which follows some of the general precepts laid out in the referenced standard. To the extent that a report indicates “general compliance” with a standard, you may wish to
speak with your geoenvironmental professional to learn
more about what was and was not done. Do not assume a
given standard was followed to the letter. Research indicates that that seldom is the case.

Realize That Recommendations
May Not Be Final
The technical recommendations included in a
geoenvironmental report are based on assumptions about
actual conditions, and so are preliminary or tentative.

Final recommendations can be prepared only by observing actual conditions as they are exposed. For that reason, you should retain the geoenvironmental professional of record to observe construction and/or remediation activities on site, to permit rapid response to unanticipated conditions.

The geoenvironmental professional who prepared the report cannot assume responsibility or liability for the report’s recommendations if that professional is not retained to observe relevant site operations.

Understand That Geotechnical Issues
Have Not Been Addressed
Unless geotechnical engineering was specifically
included in the scope of professional service, a report is not likely to relate any findings, conclusions, or
recommendations about the suitability of subsurface
materials for construction purposes, especially when site remediation has been accomplished through the removal,
replacement, encapsulation, or chemical treatment of on-site soils. The equipment, techniques, and testing used by
geotechnical engineers differ markedly from those used by geoenvironmental professionals; their education, training, and experience are also significantly different. If you plan to build on the subject site, but have not yet had a geotechnical engineering study conducted, your geoenvironmental
professional should be able to provide guidance about the next steps you should take. The same firm may provide the services you need.

Read Responsibility Provisions Closely
Geoenvironmental studies cannot be exact; they are based on professional judgement and opinion. Nonetheless, some clients, contractors, and others assume geoenvironmental reports are or certainly should be unerringly precise. Such assumptions have created unrealistic expectations that have led to wholly unwarranted claims and disputes. To help
prevent such problems, geoenvironmental professionals
have developed a number of report provisions and contract terms that explain who is responsible for what, and how risks are to be allocated. Some people mistake these for “exculpatory clauses,” that is, provisions whose purpose is to transfer one party’s rightful responsibilities and liabilities to someone else. Read the responsibility provisions included in a report and in the contract you and your geoenvironmental professional agreed to. Responsibility provisions are not “boilerplate.” They are important.

Rely on Your Geoenvironmental
Professional for Additional Assistance
Membership in the Geoprofessional Business Association
exposes geoenvironmental professionals to a wide array
of risk management techniques that can be of genuine
benefit for everyone involved with a geoenvironmental
project. Confer with your GBA-member geoenvironmental
professional for more information.
8811 Colesville Road/Suite G106, Silver Spring, MD 20910 Telephone: 301/565-2733 Facsimile: 301/589-2017
e-mail: [email protected] www.geoprofessional.org Copyright 2015 by the Geoprofessional Business Association (GBA). Duplication, reproduction, copying, or storage of this document, in whole or in part, by any means whatsoever, is strictly prohibited, except with GBA’s specific written permission. Excerpting, quoting, or otherwise extracting wording from this document is permitted only with the express written permission of GBA, and only for purposes of scholarly research or book review. Only GBA-Member Firms may use this document as a complement to or as an element of a geoenvironmental report. Any other firm, individual, or entity that so uses this document without being a GBA-Member Firm could be committing negligent or intentional (fraudulent) misrepresentation.

S a tjlll GEOPROFESSIONAL
.... BUSINESS
- - ASSOCIATION

Moreno Valley City CouncilJune 3, 2025

Moreno Valley City Council
June 3, 2025