Background:
Due to the CZU Lightning Complex Fire, High Density Poly Ethylene (HDPE) mains in the direct line of fire were damaged and melted causing depressurization of the water distribution system. Immediately after discovery, the San Lorenzo Valley Water District (SLVWD) contacted its regulatory agency, the State Water Resources Control Board (SWRCB) who recommended issuing a precautionary Do Not Drink, Do Not Boil (DND-DNB) notice to all affected residents in the depressurized zones. The depressurized zones included all SLVWD services north of the Alba Rd/Hwy 9 intersection, this is the “DND-DNB Zone.” This precautionary DND-DNB notice was issued in conjunction with the SWRCB on August 29, 2020.
Prior to the issuance of the DND-DNB order, the SLVWD collected water samples for Volatile Organic Compounds (VOCs). VOCs are a possible contaminant of the depressurization zone due to the melting of HDPE mains. All VOC samples collected were analyzed under EPA method 524.2, which includes a screen of 84 different VOCs. Included in EPA method 524.2 are Trihalomethanes, which are disinfection by-products that are formed when chlorine reacts with natural organic matter found in water. Trihalomethanes (or, THMs) are commonly found in public drinking water systems that use chlorine for disinfection and were found in all samples collected by the SLVWD. Trihalomethanes include chloroform, bromoform, chlorodibromomethane and dichlorobromomethane. The health based state standard Maximum Contaminant Level (MCL) for THM’s is 80 ug/L (or parts per billion). The SLVWD routinely monitors the distribution system for THM’s on a quarterly basis. In 2019, the detection range of TTHM’s in the SLVWD distribution system was 1-40 ug/L.
From past fires in Santa Rosa and Paradise, we know that water systems can experience organic chemical contamination (including benzene) in depressurized areas that are fire damaged. In preparation of the fire, the SLVWD was able to isolate several areas of the distribution system before some of the HDPE mains had melted. The loss of these HDPE mains was the source of depressurization, but that doesn’t necessarily point to the source of potential Volatile Organic Compound (VOC) contamination. Other sources of VOC contamination can include burned service lines, burned structures and any other materials in the depressurized areas. Other potential sources of contamination in the depressurized zones that must be ruled out are nitrate and biological contamination.
DND-DNB Zone VOC Sample Results:
The SLVWD collected a sample on 8/26/2020 at 12788 Hwy 9, in front of the Johnson building in Boulder Creek, which is in one of the affected pressure zones under the DND-DNB order. This sample was found to be absent of VOCs, other than the expected THM detections.
Unaffected Area VOC Sample Results:
The SLVWD also collected samples at tanks serving the unaffected pressure zones on 8/26/2020, including Probation tank (which serves the Scotts Valley area of Lockewood Ln and Whispering Pines Dr.), the Quail Tank (which serves the Zayante/Quail Hollow area) and Brookdale Tank (which serves the town of Ben Lomond) as a means to demonstrate to customers in unaffected areas that they were safe from any potential VOC contamination. Quail Tank and Brookdale Tank only had detections of the expected THMs. Probation tank had minor detections of 4-Methyl-2-Pentanone (MIBK), Ethyl benzene, m,p-Xylenes, o-Xylene. Detection of these VOC’s in Probation tank are theorized to be from the relatively new interior paint coatings of this tank and unrelated to fire damage. All of these VOC’s were detected well under the health based state standard known as a Maximum Contaminant Level (or, MCL), with the exception of MIBK, which does not have a health based state MCL.
Please see the table below for detected VOC’s at Probation tank and their comparison to state MCL’s. THM’s were also detected in Probation tank, as expected.
Probation Tank VOC Detections:
VOC
Detected (ug/L)
State MCL (ug/L)
4-Methyl-2-Pentanone (MIBK), 6.9 None
Ethyl benzene 0.7 300
m,p-Xylenes 3.3* *regulated
as total
o-Xylenes xylenes 1.7*
Total Xylenes 5.0 1750
Future Results and Sampling
The SLVWD has collected a total of 31 samples to be analyzed for VOCs via EPA method 524.2 as of 9/1/2020, but has only received the final lab report on 4 of these 31 samples. Updates will be provided as soon as feasible, working directly with our regulatory agency, the SWRCB regarding the results of these samples and how the results of these samples will affect the DND-DNB notice. Although, there is one data point showing the lack of significant VOC contamination in the DND-DNB affected zone, this does not rule out contamination all on its own. Repeated samples in all affected service areas must show the absence of contamination in order to confidently say that the distribution system is absent of contamination in order to lift the DND-DNB notice. We do not yet have a timeline for when the DND-DNB notice can be lifted. The SLVWD must demonstrate that the system is intact and water quality samples must confirm that the water meets state drinking water standards. This notice may also be lifted sooner in some parts of the system that were less affected by the fire.
All samples collected by the SLVWD have had their analysis expedited, but we want the ratepayers of the SLVWD to understand that it does take time to receive results. After samples have been collected, the samples must be sent to our contract laboratory, which requires overnighting these samples via courier. Once received at the lab, the samples are analyzed utilizing sophisticated instrumentation that requires frequent calibration and quality control checks to ensure the analytical process is accurate. Once the raw data from the instrumentation is generated, it must undergo a strict quality control/quality assurance process for results to be accepted as valid. Once these results are validated, the final lab report can be created. Once the final lab report is completed, it is sent to the SLVWD, and reviewed by SLVWD staff and SWRCB staff. Again, we are requesting patience as we are collecting samples and analyzing lab data as quickly and thoroughly as we can.
Definitions on Lab Report:
ND: Not Detected
ug/L: micrograms per liter, or parts per billion.
MRL: Method Reporting Limit. This is the lowest concentration value of a substance that can be reliably measured by the lab using the analytical method.
Tel: (626) 386-1100 Fax: (866) 988-3757
1 800 566 LABS (1 800 566 5227)
Report: Project: Group:
889649
SPECIAL
Fire Investigation
Laboratory Data
San Lorenzo Valley Water District Nate Gillespie
13060 Highway 9
Boulder Creek, CA 95006-9119
Samples Received on: 08/27/2020 1136
Prepped Analyzed Prep Batch Analytical Batch Method Analyte Result Units MRL Dilution 12788 Hwy 9 (202008270055) Sampled on 08/26/2020 1155
EPA 524.2 – Volatile Organics by GCMS
08/27/20 08/27/20 13:09 1271377 1271378 (EPA 524.2) 1,1,1,2-Tetrachloroethane ND ug/L 0.50 1 08/27/20 08/27/20 13:09 1271377 1271378 (EPA 524.2) 1,1,1-Trichloroethane ND ug/L 0.50 1 08/27/20 08/27/20 13:09 1271377 1271378 (EPA 524.2) 1,1,2,2-Tetrachloroethane ND ug/L 0.50 1 08/27/20 08/27/20 13:09 1271377 1271378 (EPA 524.2) 1,1,2-Trichloroethane ND ug/L 0.50 1 08/27/20 08/27/20 13:09 1271377 1271378 (EPA 524.2) 1,1-Dichloroethane ND ug/L 0.50 1 08/27/20 08/27/20 13:09 1271377 1271378 (EPA 524.2) 1,1-Dichloroethylene ND ug/L 0.50 1 08/27/20 08/27/20 13:09 1271377 1271378 (EPA 524.2) 1,1-Dichloropropene ND ug/L 0.50 1 08/27/20 08/27/20 13:09 1271377 1271378 (EPA 524.2) 1,2,3-Trichlorobenzene ND ug/L 0.50 1 08/27/20 08/27/20 13:09 1271377 1271378 (EPA 524.2) 1,2,3-Trichloropropane ND ug/L 0.50 1 08/27/20 08/27/20 13:09 1271377 1271378 (EPA 524.2) 1,2,4-Trichlorobenzene ND ug/L 0.50 1 08/27/20 08/27/20 13:09 1271377 1271378 (EPA 524.2) 1,2,4-Trimethylbenzene ND ug/L 0.50 1 08/27/20 08/27/20 13:09 1271377 1271378 (EPA 524.2) 1,2-Dichloroethane ND ug/L 0.50 1 08/27/20 08/27/20 13:09 1271377 1271378 (EPA 524.2) 1,2-Dichloropropane ND ug/L 0.50 1 08/27/20 08/27/20 13:09 1271377 1271378 (EPA 524.2) 1,3,5-Trimethylbenzene ND ug/L 0.50 1 08/27/20 08/27/20 13:09 1271377 1271378 (EPA 524.2) 1,3-Dichloropropane ND ug/L 0.50 1 08/27/20 08/27/20 13:09 1271377 1271378 (EPA 524.2) 2,2-Dichloropropane ND ug/L 0.50 1 08/27/20 08/27/20 13:09 1271377 1271378 (EPA 524.2) 2-Butanone (MEK) ND ug/L 5.0 1 08/27/20 08/27/20 13:09 1271377 1271378 (EPA 524.2) 4-Methyl-2-Pentanone (MIBK) ND ug/L 5.0 1 08/27/20 08/27/20 13:09 1271377 1271378 (EPA 524.2) Benzene ND ug/L 0.50 1 08/27/20 08/27/20 13:09 1271377 1271378 (EPA 524.2) Bromobenzene ND ug/L 0.50 1 08/27/20 08/27/20 13:09 1271377 1271378 (EPA 524.2) Bromochloromethane ND ug/L 0.50 1 08/27/20 08/27/20 13:09 1271377 1271378 (EPA 524.2) Bromodichloromethane 0.63 ug/L 0.50 1 08/27/20 08/27/20 13:09 1271377 1271378 (EPA 524.2) Bromoethane ND ug/L 0.50 1 08/27/20 08/27/20 13:09 1271377 1271378 (EPA 524.2) Bromoform ND ug/L 0.50 1 08/27/20 08/27/20 13:09 1271377 1271378 (EPA 524.2) Bromomethane (Methyl Bromide) ND ug/L 0.50 1 08/27/20 08/27/20 13:09 1271377 1271378 (EPA 524.2) Carbon disulfide ND ug/L 0.50 1 08/27/20 08/27/20 13:09 1271377 1271378 (EPA 524.2) Carbon Tetrachloride ND ug/L 0.50 1 08/27/20 08/27/20 13:09 1271377 1271378 (EPA 524.2) Chlorobenzene ND ug/L 0.50 1 08/27/20 08/27/20 13:09 1271377 1271378 (EPA 524.2) Chlorodibromomethane 0.71 ug/L 0.50 1 08/27/20 08/27/20 13:09 1271377 1271378 (EPA 524.2) Chloroethane ND ug/L 0.50 1 08/27/20 08/27/20 13:09 1271377 1271378 (EPA 524.2) Chloroform (Trichloromethane) 0.62 ug/L 0.50 1 08/27/20 08/27/20 13:09 1271377 1271378 (EPA 524.2) Chloromethane(Methyl Chloride) ND ug/L 0.50 1 08/27/20 08/27/20 13:09 1271377 1271378 (EPA 524.2) cis-1,2-Dichloroethylene ND ug/L 0.50 1 08/27/20 08/27/20 13:09 1271377 1271378 (EPA 524.2) cis-1,3-Dichloropropene ND ug/L 0.50 1
Rounding on totals after summation.
(c) – indicates calculated results. Analysis is a calculated result. Reported results are not rounded until the
final step before reporting. Therefore methods that use a test result with further calculation may have slight
differences in final result than the component analyses.
Data Report – Page 1 of 9
Tel: (626) 386-1100 Fax: (866) 988-3757
1 800 566 LABS (1 800 566 5227)
Report: Project: Group:
889649
SPECIAL
Fire Investigation
Laboratory Data
San Lorenzo Valley Water District Nate Gillespie
13060 Highway 9
Boulder Creek, CA 95006-9119
Samples Received on: 08/27/2020 1136
Prepped Analyzed Prep Batch Analytical Batch Method Analyte Result Units MRL Dilution
08/27/20 08/27/20 13:09 1271377 1271378 (EPA 524.2) Dibromomethane ND ug/L 0.50 1 08/27/20 08/27/20 13:09 1271377 1271378 (EPA 524.2) Dichlorodifluoromethane ND ug/L 0.50 1 08/27/20 08/27/20 13:09 1271377 1271378 (EPA 524.2) Dichloromethane ND ug/L 0.50 1 08/27/20 08/27/20 13:09 1271377 1271378 (EPA 524.2) Di-isopropyl ether ND ug/L 3.0 1 08/27/20 08/27/20 13:09 1271377 1271378 (EPA 524.2) Ethyl benzene ND ug/L 0.50 1 08/27/20 08/27/20 13:09 1271377 1271378 (EPA 524.2) Hexachlorobutadiene ND ug/L 0.50 1 08/27/20 08/27/20 13:09 1271377 1271378 (EPA 524.2) Isopropylbenzene ND ug/L 0.50 1 08/27/20 08/27/20 13:09 1271377 1271378 (EPA 524.2) m,p-Xylenes ND ug/L 0.50 1 08/27/20 08/27/20 13:09 1271377 1271378 (EPA 524.2) m-Dichlorobenzene (1,3-DCB) ND ug/L 0.50 1 08/27/20 08/27/20 13:09 1271377 1271378 (EPA 524.2) Methyl Tert-butyl ether (MTBE) ND ug/L 0.50 1 08/27/20 08/27/20 13:09 1271377 1271378 (EPA 524.2) Naphthalene ND (LM) ug/L 0.50 1 08/27/20 08/27/20 13:09 1271377 1271378 (EPA 524.2) n-Butylbenzene ND ug/L 0.50 1 08/27/20 08/27/20 13:09 1271377 1271378 (EPA 524.2) n-Propylbenzene ND ug/L 0.50 1 08/27/20 08/27/20 13:09 1271377 1271378 (EPA 524.2) o-Chlorotoluene ND ug/L 0.50 1 08/27/20 08/27/20 13:09 1271377 1271378 (EPA 524.2) o-Dichlorobenzene (1,2-DCB) ND ug/L 0.50 1 08/27/20 08/27/20 13:09 1271377 1271378 (EPA 524.2) o-Xylene ND ug/L 0.50 1 08/27/20 08/27/20 13:09 1271377 1271378 (EPA 524.2) p-Chlorotoluene ND ug/L 0.50 1 08/27/20 08/27/20 13:09 1271377 1271378 (EPA 524.2) p-Dichlorobenzene (1,4-DCB) ND ug/L 0.50 1 08/27/20 08/27/20 13:09 1271377 1271378 (EPA 524.2) p-Isopropyltoluene ND ug/L 0.50 1 08/27/20 08/27/20 13:09 1271377 1271378 (EPA 524.2) sec-Butylbenzene ND ug/L 0.50 1 08/27/20 08/27/20 13:09 1271377 1271378 (EPA 524.2) Styrene ND ug/L 0.50 1 08/27/20 08/27/20 13:09 1271377 1271378 (EPA 524.2) tert-amyl Methyl Ether ND ug/L 3.0 1 08/27/20 08/27/20 13:09 1271377 1271378 (EPA 524.2) tert-Butyl Ethyl Ether ND ug/L 3.0 1 08/27/20 08/27/20 13:09 1271377 1271378 (EPA 524.2) tert-Butylbenzene ND ug/L 0.50 1 08/27/20 08/27/20 13:09 1271377 1271378 (EPA 524.2) Tetrachloroethylene (PCE) ND ug/L 0.50 1 08/27/20 08/27/20 13:09 1271377 1271378 (EPA 524.2) Toluene ND ug/L 0.50 1 08/27/20 08/27/20 13:09 1271377 1271378 (EPA 524.2) Total 1,3-Dichloropropene ND ug/L 0.50 1 08/27/20 08/27/20 13:09 1271377 1271378 (EPA 524.2) Total THM 2.0 ug/L 0.50 1 08/27/20 08/27/20 13:09 1271377 1271378 (EPA 524.2) Total xylenes ND ug/L 0.50 1 08/27/20 08/27/20 13:09 1271377 1271378 (EPA 524.2) trans-1,2-Dichloroethylene ND ug/L 0.50 1 08/27/20 08/27/20 13:09 1271377 1271378 (EPA 524.2) trans-1,3-Dichloropropene ND ug/L 0.50 1 08/27/20 08/27/20 13:09 1271377 1271378 (EPA 524.2) Trichloroethylene (TCE) ND ug/L 0.50 1 08/27/20 08/27/20 13:09 1271377 1271378 (EPA 524.2) Trichlorofluoromethane ND ug/L 0.50 1 08/27/20 08/27/20 13:09 1271377 1271378 (EPA 524.2) Trichlorotrifluoroethane(Freon 113) ND ug/L 0.50 1 08/27/20 08/27/20 13:09 1271377 1271378 (EPA 524.2) Vinyl chloride (VC) ND ug/L 0.30 1 08/27/20 08/27/20 13:09 1271377 1271378 (EPA 524.2) 1,2-Dichloroethane-d4 94 % 1 08/27/20 08/27/20 13:09 1271377 1271378 (EPA 524.2) 4-Bromofluorobenzene 103 % 1
Rounding on totals after summation.
(c) – indicates calculated results. Analysis is a calculated result. Reported results are not rounded until the
final step before reporting. Therefore methods that use a test result with further calculation may have slight
differences in final result than the component analyses.
Data Report – Page 2 of 9
Tel: (626) 386-1100 Fax: (866) 988-3757
1 800 566 LABS (1 800 566 5227)
Report: Project: Group:
889649
SPECIAL
Fire Investigation
Laboratory Data
San Lorenzo Valley Water District Nate Gillespie
13060 Highway 9
Boulder Creek, CA 95006-9119
Samples Received on: 08/27/2020 1136
Prepped Analyzed Prep Batch Analytical Batch Method Analyte Result Units MRL Dilution 08/27/20 08/27/20 13:09 1271377 1271378 (EPA 524.2) Toluene-d8 103 % 1 Brookdale Tank (202008270056) Sampled on 08/26/2020 1215
EPA 524.2 – Volatile Organics by GCMS
08/27/20 08/27/20 13:32 1271377 1271378 (EPA 524.2) 1,1,1,2-Tetrachloroethane ND ug/L 0.50 1 08/27/20 08/27/20 13:32 1271377 1271378 (EPA 524.2) 1,1,1-Trichloroethane ND ug/L 0.50 1 08/27/20 08/27/20 13:32 1271377 1271378 (EPA 524.2) 1,1,2,2-Tetrachloroethane ND ug/L 0.50 1 08/27/20 08/27/20 13:32 1271377 1271378 (EPA 524.2) 1,1,2-Trichloroethane ND ug/L 0.50 1 08/27/20 08/27/20 13:32 1271377 1271378 (EPA 524.2) 1,1-Dichloroethane ND ug/L 0.50 1 08/27/20 08/27/20 13:32 1271377 1271378 (EPA 524.2) 1,1-Dichloroethylene ND ug/L 0.50 1 08/27/20 08/27/20 13:32 1271377 1271378 (EPA 524.2) 1,1-Dichloropropene ND ug/L 0.50 1 08/27/20 08/27/20 13:32 1271377 1271378 (EPA 524.2) 1,2,3-Trichlorobenzene ND ug/L 0.50 1 08/27/20 08/27/20 13:32 1271377 1271378 (EPA 524.2) 1,2,3-Trichloropropane ND ug/L 0.50 1 08/27/20 08/27/20 13:32 1271377 1271378 (EPA 524.2) 1,2,4-Trichlorobenzene ND ug/L 0.50 1 08/27/20 08/27/20 13:32 1271377 1271378 (EPA 524.2) 1,2,4-Trimethylbenzene ND ug/L 0.50 1 08/27/20 08/27/20 13:32 1271377 1271378 (EPA 524.2) 1,2-Dichloroethane ND ug/L 0.50 1 08/27/20 08/27/20 13:32 1271377 1271378 (EPA 524.2) 1,2-Dichloropropane ND ug/L 0.50 1 08/27/20 08/27/20 13:32 1271377 1271378 (EPA 524.2) 1,3,5-Trimethylbenzene ND ug/L 0.50 1 08/27/20 08/27/20 13:32 1271377 1271378 (EPA 524.2) 1,3-Dichloropropane ND ug/L 0.50 1 08/27/20 08/27/20 13:32 1271377 1271378 (EPA 524.2) 2,2-Dichloropropane ND ug/L 0.50 1 08/27/20 08/27/20 13:32 1271377 1271378 (EPA 524.2) 2-Butanone (MEK) ND ug/L 5.0 1 08/27/20 08/27/20 13:32 1271377 1271378 (EPA 524.2) 4-Methyl-2-Pentanone (MIBK) ND ug/L 5.0 1 08/27/20 08/27/20 13:32 1271377 1271378 (EPA 524.2) Benzene ND ug/L 0.50 1 08/27/20 08/27/20 13:32 1271377 1271378 (EPA 524.2) Bromobenzene ND ug/L 0.50 1 08/27/20 08/27/20 13:32 1271377 1271378 (EPA 524.2) Bromochloromethane ND ug/L 0.50 1 08/27/20 08/27/20 13:32 1271377 1271378 (EPA 524.2) Bromodichloromethane 1.4 ug/L 0.50 1 08/27/20 08/27/20 13:32 1271377 1271378 (EPA 524.2) Bromoethane ND ug/L 0.50 1 08/27/20 08/27/20 13:32 1271377 1271378 (EPA 524.2) Bromoform ND ug/L 0.50 1 08/27/20 08/27/20 13:32 1271377 1271378 (EPA 524.2) Bromomethane (Methyl Bromide) ND ug/L 0.50 1 08/27/20 08/27/20 13:32 1271377 1271378 (EPA 524.2) Carbon disulfide ND ug/L 0.50 1 08/27/20 08/27/20 13:32 1271377 1271378 (EPA 524.2) Carbon Tetrachloride ND ug/L 0.50 1 08/27/20 08/27/20 13:32 1271377 1271378 (EPA 524.2) Chlorobenzene ND ug/L 0.50 1 08/27/20 08/27/20 13:32 1271377 1271378 (EPA 524.2) Chlorodibromomethane 1.3 ug/L 0.50 1 08/27/20 08/27/20 13:32 1271377 1271378 (EPA 524.2) Chloroethane ND ug/L 0.50 1 08/27/20 08/27/20 13:32 1271377 1271378 (EPA 524.2) Chloroform (Trichloromethane) 1.3 ug/L 0.50 1 08/27/20 08/27/20 13:32 1271377 1271378 (EPA 524.2) Chloromethane(Methyl Chloride) ND ug/L 0.50 1 08/27/20 08/27/20 13:32 1271377 1271378 (EPA 524.2) cis-1,2-Dichloroethylene ND ug/L 0.50 1 08/27/20 08/27/20 13:32 1271377 1271378 (EPA 524.2) cis-1,3-Dichloropropene ND ug/L 0.50 1
Rounding on totals after summation.
(c) – indicates calculated results. Analysis is a calculated result. Reported results are not rounded until the
final step before reporting. Therefore methods that use a test result with further calculation may have slight
differences in final result than the component analyses.
Data Report – Page 3 of 9
Tel: (626) 386-1100 Fax: (866) 988-3757
1 800 566 LABS (1 800 566 5227)
Report: Project: Group:
889649
SPECIAL
Fire Investigation
Laboratory Data
San Lorenzo Valley Water District Nate Gillespie
13060 Highway 9
Boulder Creek, CA 95006-9119
Samples Received on: 08/27/2020 1136
Prepped Analyzed Prep Batch Analytical Batch Method Analyte Result Units MRL Dilution
08/27/20 08/27/20 13:32 1271377 1271378 (EPA 524.2) Dibromomethane ND ug/L 0.50 1 08/27/20 08/27/20 13:32 1271377 1271378 (EPA 524.2) Dichlorodifluoromethane ND ug/L 0.50 1 08/27/20 08/27/20 13:32 1271377 1271378 (EPA 524.2) Dichloromethane ND ug/L 0.50 1 08/27/20 08/27/20 13:32 1271377 1271378 (EPA 524.2) Di-isopropyl ether ND ug/L 3.0 1 08/27/20 08/27/20 13:32 1271377 1271378 (EPA 524.2) Ethyl benzene ND ug/L 0.50 1 08/27/20 08/27/20 13:32 1271377 1271378 (EPA 524.2) Hexachlorobutadiene ND ug/L 0.50 1 08/27/20 08/27/20 13:32 1271377 1271378 (EPA 524.2) Isopropylbenzene ND ug/L 0.50 1 08/27/20 08/27/20 13:32 1271377 1271378 (EPA 524.2) m,p-Xylenes ND ug/L 0.50 1 08/27/20 08/27/20 13:32 1271377 1271378 (EPA 524.2) m-Dichlorobenzene (1,3-DCB) ND ug/L 0.50 1 08/27/20 08/27/20 13:32 1271377 1271378 (EPA 524.2) Methyl Tert-butyl ether (MTBE) ND ug/L 0.50 1 08/27/20 08/27/20 13:32 1271377 1271378 (EPA 524.2) Naphthalene ND (LM) ug/L 0.50 1 08/27/20 08/27/20 13:32 1271377 1271378 (EPA 524.2) n-Butylbenzene ND ug/L 0.50 1 08/27/20 08/27/20 13:32 1271377 1271378 (EPA 524.2) n-Propylbenzene ND ug/L 0.50 1 08/27/20 08/27/20 13:32 1271377 1271378 (EPA 524.2) o-Chlorotoluene ND ug/L 0.50 1 08/27/20 08/27/20 13:32 1271377 1271378 (EPA 524.2) o-Dichlorobenzene (1,2-DCB) ND ug/L 0.50 1 08/27/20 08/27/20 13:32 1271377 1271378 (EPA 524.2) o-Xylene ND ug/L 0.50 1 08/27/20 08/27/20 13:32 1271377 1271378 (EPA 524.2) p-Chlorotoluene ND ug/L 0.50 1 08/27/20 08/27/20 13:32 1271377 1271378 (EPA 524.2) p-Dichlorobenzene (1,4-DCB) ND ug/L 0.50 1 08/27/20 08/27/20 13:32 1271377 1271378 (EPA 524.2) p-Isopropyltoluene ND ug/L 0.50 1 08/27/20 08/27/20 13:32 1271377 1271378 (EPA 524.2) sec-Butylbenzene ND ug/L 0.50 1 08/27/20 08/27/20 13:32 1271377 1271378 (EPA 524.2) Styrene ND ug/L 0.50 1 08/27/20 08/27/20 13:32 1271377 1271378 (EPA 524.2) tert-amyl Methyl Ether ND ug/L 3.0 1 08/27/20 08/27/20 13:32 1271377 1271378 (EPA 524.2) tert-Butyl Ethyl Ether ND ug/L 3.0 1 08/27/20 08/27/20 13:32 1271377 1271378 (EPA 524.2) tert-Butylbenzene ND ug/L 0.50 1 08/27/20 08/27/20 13:32 1271377 1271378 (EPA 524.2) Tetrachloroethylene (PCE) ND ug/L 0.50 1 08/27/20 08/27/20 13:32 1271377 1271378 (EPA 524.2) Toluene ND ug/L 0.50 1 08/27/20 08/27/20 13:32 1271377 1271378 (EPA 524.2) Total 1,3-Dichloropropene ND ug/L 0.50 1 08/27/20 08/27/20 13:32 1271377 1271378 (EPA 524.2) Total THM 4.0 ug/L 0.50 1 08/27/20 08/27/20 13:32 1271377 1271378 (EPA 524.2) Total xylenes ND ug/L 0.50 1 08/27/20 08/27/20 13:32 1271377 1271378 (EPA 524.2) trans-1,2-Dichloroethylene ND ug/L 0.50 1 08/27/20 08/27/20 13:32 1271377 1271378 (EPA 524.2) trans-1,3-Dichloropropene ND ug/L 0.50 1 08/27/20 08/27/20 13:32 1271377 1271378 (EPA 524.2) Trichloroethylene (TCE) ND ug/L 0.50 1 08/27/20 08/27/20 13:32 1271377 1271378 (EPA 524.2) Trichlorofluoromethane ND ug/L 0.50 1 08/27/20 08/27/20 13:32 1271377 1271378 (EPA 524.2) Trichlorotrifluoroethane(Freon 113) ND ug/L 0.50 1 08/27/20 08/27/20 13:32 1271377 1271378 (EPA 524.2) Vinyl chloride (VC) ND ug/L 0.30 1 08/27/20 08/27/20 13:32 1271377 1271378 (EPA 524.2) 1,2-Dichloroethane-d4 94 % 1 08/27/20 08/27/20 13:32 1271377 1271378 (EPA 524.2) 4-Bromofluorobenzene 101 % 1
Rounding on totals after summation.
(c) – indicates calculated results. Analysis is a calculated result. Reported results are not rounded until the
final step before reporting. Therefore methods that use a test result with further calculation may have slight
differences in final result than the component analyses.
Data Report – Page 4 of 9
Tel: (626) 386-1100 Fax: (866) 988-3757
1 800 566 LABS (1 800 566 5227)
Report: Project: Group:
889649
SPECIAL
Fire Investigation
Laboratory Data
San Lorenzo Valley Water District Nate Gillespie
13060 Highway 9
Boulder Creek, CA 95006-9119
Samples Received on: 08/27/2020 1136
Prepped Analyzed Prep Batch Analytical Batch Method Analyte Result Units MRL Dilution 08/27/20 08/27/20 13:32 1271377 1271378 (EPA 524.2) Toluene-d8 103 % 1 Quail Tank (202008270057) Sampled on 08/26/2020 1245
EPA 524.2 – Volatile Organics by GCMS
08/27/20 08/27/20 13:55 1271377 1271378 (EPA 524.2) 1,1,1,2-Tetrachloroethane ND ug/L 0.50 1 08/27/20 08/27/20 13:55 1271377 1271378 (EPA 524.2) 1,1,1-Trichloroethane ND ug/L 0.50 1 08/27/20 08/27/20 13:55 1271377 1271378 (EPA 524.2) 1,1,2,2-Tetrachloroethane ND ug/L 0.50 1 08/27/20 08/27/20 13:55 1271377 1271378 (EPA 524.2) 1,1,2-Trichloroethane ND ug/L 0.50 1 08/27/20 08/27/20 13:55 1271377 1271378 (EPA 524.2) 1,1-Dichloroethane ND ug/L 0.50 1 08/27/20 08/27/20 13:55 1271377 1271378 (EPA 524.2) 1,1-Dichloroethylene ND ug/L 0.50 1 08/27/20 08/27/20 13:55 1271377 1271378 (EPA 524.2) 1,1-Dichloropropene ND ug/L 0.50 1 08/27/20 08/27/20 13:55 1271377 1271378 (EPA 524.2) 1,2,3-Trichlorobenzene ND ug/L 0.50 1 08/27/20 08/27/20 13:55 1271377 1271378 (EPA 524.2) 1,2,3-Trichloropropane ND ug/L 0.50 1 08/27/20 08/27/20 13:55 1271377 1271378 (EPA 524.2) 1,2,4-Trichlorobenzene ND ug/L 0.50 1 08/27/20 08/27/20 13:55 1271377 1271378 (EPA 524.2) 1,2,4-Trimethylbenzene ND ug/L 0.50 1 08/27/20 08/27/20 13:55 1271377 1271378 (EPA 524.2) 1,2-Dichloroethane ND ug/L 0.50 1 08/27/20 08/27/20 13:55 1271377 1271378 (EPA 524.2) 1,2-Dichloropropane ND ug/L 0.50 1 08/27/20 08/27/20 13:55 1271377 1271378 (EPA 524.2) 1,3,5-Trimethylbenzene ND ug/L 0.50 1 08/27/20 08/27/20 13:55 1271377 1271378 (EPA 524.2) 1,3-Dichloropropane ND ug/L 0.50 1 08/27/20 08/27/20 13:55 1271377 1271378 (EPA 524.2) 2,2-Dichloropropane ND ug/L 0.50 1 08/27/20 08/27/20 13:55 1271377 1271378 (EPA 524.2) 2-Butanone (MEK) ND ug/L 5.0 1 08/27/20 08/27/20 13:55 1271377 1271378 (EPA 524.2) 4-Methyl-2-Pentanone (MIBK) ND ug/L 5.0 1 08/27/20 08/27/20 13:55 1271377 1271378 (EPA 524.2) Benzene ND ug/L 0.50 1 08/27/20 08/27/20 13:55 1271377 1271378 (EPA 524.2) Bromobenzene ND ug/L 0.50 1 08/27/20 08/27/20 13:55 1271377 1271378 (EPA 524.2) Bromochloromethane ND ug/L 0.50 1 08/27/20 08/27/20 13:55 1271377 1271378 (EPA 524.2) Bromodichloromethane 1.3 ug/L 0.50 1 08/27/20 08/27/20 13:55 1271377 1271378 (EPA 524.2) Bromoethane ND ug/L 0.50 1 08/27/20 08/27/20 13:55 1271377 1271378 (EPA 524.2) Bromoform ND ug/L 0.50 1 08/27/20 08/27/20 13:55 1271377 1271378 (EPA 524.2) Bromomethane (Methyl Bromide) ND ug/L 0.50 1 08/27/20 08/27/20 13:55 1271377 1271378 (EPA 524.2) Carbon disulfide ND ug/L 0.50 1 08/27/20 08/27/20 13:55 1271377 1271378 (EPA 524.2) Carbon Tetrachloride ND ug/L 0.50 1 08/27/20 08/27/20 13:55 1271377 1271378 (EPA 524.2) Chlorobenzene ND ug/L 0.50 1 08/27/20 08/27/20 13:55 1271377 1271378 (EPA 524.2) Chlorodibromomethane 1.2 ug/L 0.50 1 08/27/20 08/27/20 13:55 1271377 1271378 (EPA 524.2) Chloroethane ND ug/L 0.50 1 08/27/20 08/27/20 13:55 1271377 1271378 (EPA 524.2) Chloroform (Trichloromethane) 1.1 ug/L 0.50 1 08/27/20 08/27/20 13:55 1271377 1271378 (EPA 524.2) Chloromethane(Methyl Chloride) ND ug/L 0.50 1 08/27/20 08/27/20 13:55 1271377 1271378 (EPA 524.2) cis-1,2-Dichloroethylene ND ug/L 0.50 1 08/27/20 08/27/20 13:55 1271377 1271378 (EPA 524.2) cis-1,3-Dichloropropene ND ug/L 0.50 1
Rounding on totals after summation.
(c) – indicates calculated results. Analysis is a calculated result. Reported results are not rounded until the
final step before reporting. Therefore methods that use a test result with further calculation may have slight
differences in final result than the component analyses.
Data Report – Page 5 of 9
Tel: (626) 386-1100 Fax: (866) 988-3757
1 800 566 LABS (1 800 566 5227)
Report: Project: Group:
889649
SPECIAL
Fire Investigation
Laboratory Data
San Lorenzo Valley Water District Nate Gillespie
13060 Highway 9
Boulder Creek, CA 95006-9119
Samples Received on: 08/27/2020 1136
Prepped Analyzed Prep Batch Analytical Batch Method Analyte Result Units MRL Dilution
08/27/20 08/27/20 13:55 1271377 1271378 (EPA 524.2) Dibromomethane ND ug/L 0.50 1 08/27/20 08/27/20 13:55 1271377 1271378 (EPA 524.2) Dichlorodifluoromethane ND ug/L 0.50 1 08/27/20 08/27/20 13:55 1271377 1271378 (EPA 524.2) Dichloromethane ND ug/L 0.50 1 08/27/20 08/27/20 13:55 1271377 1271378 (EPA 524.2) Di-isopropyl ether ND ug/L 3.0 1 08/27/20 08/27/20 13:55 1271377 1271378 (EPA 524.2) Ethyl benzene ND ug/L 0.50 1 08/27/20 08/27/20 13:55 1271377 1271378 (EPA 524.2) Hexachlorobutadiene ND ug/L 0.50 1 08/27/20 08/27/20 13:55 1271377 1271378 (EPA 524.2) Isopropylbenzene ND ug/L 0.50 1 08/27/20 08/27/20 13:55 1271377 1271378 (EPA 524.2) m,p-Xylenes ND ug/L 0.50 1 08/27/20 08/27/20 13:55 1271377 1271378 (EPA 524.2) m-Dichlorobenzene (1,3-DCB) ND ug/L 0.50 1 08/27/20 08/27/20 13:55 1271377 1271378 (EPA 524.2) Methyl Tert-butyl ether (MTBE) ND ug/L 0.50 1 08/27/20 08/27/20 13:55 1271377 1271378 (EPA 524.2) Naphthalene ND (LM) ug/L 0.50 1 08/27/20 08/27/20 13:55 1271377 1271378 (EPA 524.2) n-Butylbenzene ND ug/L 0.50 1 08/27/20 08/27/20 13:55 1271377 1271378 (EPA 524.2) n-Propylbenzene ND ug/L 0.50 1 08/27/20 08/27/20 13:55 1271377 1271378 (EPA 524.2) o-Chlorotoluene ND ug/L 0.50 1 08/27/20 08/27/20 13:55 1271377 1271378 (EPA 524.2) o-Dichlorobenzene (1,2-DCB) ND ug/L 0.50 1 08/27/20 08/27/20 13:55 1271377 1271378 (EPA 524.2) o-Xylene ND ug/L 0.50 1 08/27/20 08/27/20 13:55 1271377 1271378 (EPA 524.2) p-Chlorotoluene ND ug/L 0.50 1 08/27/20 08/27/20 13:55 1271377 1271378 (EPA 524.2) p-Dichlorobenzene (1,4-DCB) ND ug/L 0.50 1 08/27/20 08/27/20 13:55 1271377 1271378 (EPA 524.2) p-Isopropyltoluene ND ug/L 0.50 1 08/27/20 08/27/20 13:55 1271377 1271378 (EPA 524.2) sec-Butylbenzene ND ug/L 0.50 1 08/27/20 08/27/20 13:55 1271377 1271378 (EPA 524.2) Styrene ND ug/L 0.50 1 08/27/20 08/27/20 13:55 1271377 1271378 (EPA 524.2) tert-amyl Methyl Ether ND ug/L 3.0 1 08/27/20 08/27/20 13:55 1271377 1271378 (EPA 524.2) tert-Butyl Ethyl Ether ND ug/L 3.0 1 08/27/20 08/27/20 13:55 1271377 1271378 (EPA 524.2) tert-Butylbenzene ND ug/L 0.50 1 08/27/20 08/27/20 13:55 1271377 1271378 (EPA 524.2) Tetrachloroethylene (PCE) ND ug/L 0.50 1 08/27/20 08/27/20 13:55 1271377 1271378 (EPA 524.2) Toluene ND ug/L 0.50 1 08/27/20 08/27/20 13:55 1271377 1271378 (EPA 524.2) Total 1,3-Dichloropropene ND ug/L 0.50 1 08/27/20 08/27/20 13:55 1271377 1271378 (EPA 524.2) Total THM 3.6 ug/L 0.50 1 08/27/20 08/27/20 13:55 1271377 1271378 (EPA 524.2) Total xylenes ND ug/L 0.50 1 08/27/20 08/27/20 13:55 1271377 1271378 (EPA 524.2) trans-1,2-Dichloroethylene ND ug/L 0.50 1 08/27/20 08/27/20 13:55 1271377 1271378 (EPA 524.2) trans-1,3-Dichloropropene ND ug/L 0.50 1 08/27/20 08/27/20 13:55 1271377 1271378 (EPA 524.2) Trichloroethylene (TCE) ND ug/L 0.50 1 08/27/20 08/27/20 13:55 1271377 1271378 (EPA 524.2) Trichlorofluoromethane ND ug/L 0.50 1 08/27/20 08/27/20 13:55 1271377 1271378 (EPA 524.2) Trichlorotrifluoroethane(Freon 113) ND ug/L 0.50 1 08/27/20 08/27/20 13:55 1271377 1271378 (EPA 524.2) Vinyl chloride (VC) ND ug/L 0.30 1 08/27/20 08/27/20 13:55 1271377 1271378 (EPA 524.2) 1,2-Dichloroethane-d4 101 % 1 08/27/20 08/27/20 13:55 1271377 1271378 (EPA 524.2) 4-Bromofluorobenzene 99 % 1
Rounding on totals after summation.
(c) – indicates calculated results. Analysis is a calculated result. Reported results are not rounded until the
final step before reporting. Therefore methods that use a test result with further calculation may have slight
differences in final result than the component analyses.
Data Report – Page 6 of 9
Tel: (626) 386-1100 Fax: (866) 988-3757
1 800 566 LABS (1 800 566 5227)
Report: Project: Group:
889649
SPECIAL
Fire Investigation
Laboratory Data
San Lorenzo Valley Water District Nate Gillespie
13060 Highway 9
Boulder Creek, CA 95006-9119
Samples Received on: 08/27/2020 1136
Prepped Analyzed Prep Batch Analytical Batch Method Analyte Result Units MRL Dilution 08/27/20 08/27/20 13:55 1271377 1271378 (EPA 524.2) Toluene-d8 101 % 1 Probation Tank (202008270058) Sampled on 08/26/2020 1305
EPA 524.2 – Volatile Organics by GCMS
08/27/20 08/27/20 14:17 1271377 1271378 (EPA 524.2) 1,1,1,2-Tetrachloroethane ND ug/L 0.50 1 08/27/20 08/27/20 14:17 1271377 1271378 (EPA 524.2) 1,1,1-Trichloroethane ND ug/L 0.50 1 08/27/20 08/27/20 14:17 1271377 1271378 (EPA 524.2) 1,1,2,2-Tetrachloroethane ND ug/L 0.50 1 08/27/20 08/27/20 14:17 1271377 1271378 (EPA 524.2) 1,1,2-Trichloroethane ND ug/L 0.50 1 08/27/20 08/27/20 14:17 1271377 1271378 (EPA 524.2) 1,1-Dichloroethane ND ug/L 0.50 1 08/27/20 08/27/20 14:17 1271377 1271378 (EPA 524.2) 1,1-Dichloroethylene ND ug/L 0.50 1 08/27/20 08/27/20 14:17 1271377 1271378 (EPA 524.2) 1,1-Dichloropropene ND ug/L 0.50 1 08/27/20 08/27/20 14:17 1271377 1271378 (EPA 524.2) 1,2,3-Trichlorobenzene ND ug/L 0.50 1 08/27/20 08/27/20 14:17 1271377 1271378 (EPA 524.2) 1,2,3-Trichloropropane ND ug/L 0.50 1 08/27/20 08/27/20 14:17 1271377 1271378 (EPA 524.2) 1,2,4-Trichlorobenzene ND ug/L 0.50 1 08/27/20 08/27/20 14:17 1271377 1271378 (EPA 524.2) 1,2,4-Trimethylbenzene ND ug/L 0.50 1 08/27/20 08/27/20 14:17 1271377 1271378 (EPA 524.2) 1,2-Dichloroethane ND ug/L 0.50 1 08/27/20 08/27/20 14:17 1271377 1271378 (EPA 524.2) 1,2-Dichloropropane ND ug/L 0.50 1 08/27/20 08/27/20 14:17 1271377 1271378 (EPA 524.2) 1,3,5-Trimethylbenzene ND ug/L 0.50 1 08/27/20 08/27/20 14:17 1271377 1271378 (EPA 524.2) 1,3-Dichloropropane ND ug/L 0.50 1 08/27/20 08/27/20 14:17 1271377 1271378 (EPA 524.2) 2,2-Dichloropropane ND ug/L 0.50 1 08/27/20 08/27/20 14:17 1271377 1271378 (EPA 524.2) 2-Butanone (MEK) ND ug/L 5.0 1 08/27/20 08/27/20 14:17 1271377 1271378 (EPA 524.2) 4-Methyl-2-Pentanone (MIBK) 6.9 ug/L 5.0 1 08/27/20 08/27/20 14:17 1271377 1271378 (EPA 524.2) Benzene ND ug/L 0.50 1 08/27/20 08/27/20 14:17 1271377 1271378 (EPA 524.2) Bromobenzene ND ug/L 0.50 1 08/27/20 08/27/20 14:17 1271377 1271378 (EPA 524.2) Bromochloromethane ND ug/L 0.50 1 08/27/20 08/27/20 14:17 1271377 1271378 (EPA 524.2) Bromodichloromethane ND ug/L 0.50 1 08/27/20 08/27/20 14:17 1271377 1271378 (EPA 524.2) Bromoethane ND ug/L 0.50 1 08/27/20 08/27/20 14:17 1271377 1271378 (EPA 524.2) Bromoform ND ug/L 0.50 1 08/27/20 08/27/20 14:17 1271377 1271378 (EPA 524.2) Bromomethane (Methyl Bromide) ND ug/L 0.50 1 08/27/20 08/27/20 14:17 1271377 1271378 (EPA 524.2) Carbon disulfide ND ug/L 0.50 1 08/27/20 08/27/20 14:17 1271377 1271378 (EPA 524.2) Carbon Tetrachloride ND ug/L 0.50 1 08/27/20 08/27/20 14:17 1271377 1271378 (EPA 524.2) Chlorobenzene ND ug/L 0.50 1 08/27/20 08/27/20 14:17 1271377 1271378 (EPA 524.2) Chlorodibromomethane 0.60 ug/L 0.50 1 08/27/20 08/27/20 14:17 1271377 1271378 (EPA 524.2) Chloroethane ND ug/L 0.50 1 08/27/20 08/27/20 14:17 1271377 1271378 (EPA 524.2) Chloroform (Trichloromethane) ND ug/L 0.50 1 08/27/20 08/27/20 14:17 1271377 1271378 (EPA 524.2) Chloromethane(Methyl Chloride) ND ug/L 0.50 1 08/27/20 08/27/20 14:17 1271377 1271378 (EPA 524.2) cis-1,2-Dichloroethylene ND ug/L 0.50 1 08/27/20 08/27/20 14:17 1271377 1271378 (EPA 524.2) cis-1,3-Dichloropropene ND ug/L 0.50 1
Rounding on totals after summation.
(c) – indicates calculated results. Analysis is a calculated result. Reported results are not rounded until the
final step before reporting. Therefore methods that use a test result with further calculation may have slight
differences in final result than the component analyses.
Data Report – Page 7 of 9
Tel: (626) 386-1100 Fax: (866) 988-3757
1 800 566 LABS (1 800 566 5227)
Report: Project: Group:
889649
SPECIAL
Fire Investigation
Laboratory Data
San Lorenzo Valley Water District Nate Gillespie
13060 Highway 9
Boulder Creek, CA 95006-9119
Samples Received on: 08/27/2020 1136
Prepped Analyzed Prep Batch Analytical Batch Method Analyte Result Units MRL Dilution
08/27/20 08/27/20 14:17 1271377 1271378 (EPA 524.2) Dibromomethane ND ug/L 0.50 1 08/27/20 08/27/20 14:17 1271377 1271378 (EPA 524.2) Dichlorodifluoromethane ND ug/L 0.50 1 08/27/20 08/27/20 14:17 1271377 1271378 (EPA 524.2) Dichloromethane ND ug/L 0.50 1 08/27/20 08/27/20 14:17 1271377 1271378 (EPA 524.2) Di-isopropyl ether ND ug/L 3.0 1 08/27/20 08/27/20 14:17 1271377 1271378 (EPA 524.2) Ethyl benzene 0.70 ug/L 0.50 1 08/27/20 08/27/20 14:17 1271377 1271378 (EPA 524.2) Hexachlorobutadiene ND ug/L 0.50 1 08/27/20 08/27/20 14:17 1271377 1271378 (EPA 524.2) Isopropylbenzene ND ug/L 0.50 1 08/27/20 08/27/20 14:17 1271377 1271378 (EPA 524.2) m,p-Xylenes 3.3 ug/L 0.50 1 08/27/20 08/27/20 14:17 1271377 1271378 (EPA 524.2) m-Dichlorobenzene (1,3-DCB) ND ug/L 0.50 1 08/27/20 08/27/20 14:17 1271377 1271378 (EPA 524.2) Methyl Tert-butyl ether (MTBE) ND ug/L 0.50 1 08/27/20 08/27/20 14:17 1271377 1271378 (EPA 524.2) Naphthalene ND (LM) ug/L 0.50 1 08/27/20 08/27/20 14:17 1271377 1271378 (EPA 524.2) n-Butylbenzene ND ug/L 0.50 1 08/27/20 08/27/20 14:17 1271377 1271378 (EPA 524.2) n-Propylbenzene ND ug/L 0.50 1 08/27/20 08/27/20 14:17 1271377 1271378 (EPA 524.2) o-Chlorotoluene ND ug/L 0.50 1 08/27/20 08/27/20 14:17 1271377 1271378 (EPA 524.2) o-Dichlorobenzene (1,2-DCB) ND ug/L 0.50 1 08/27/20 08/27/20 14:17 1271377 1271378 (EPA 524.2) o-Xylene 1.7 ug/L 0.50 1 08/27/20 08/27/20 14:17 1271377 1271378 (EPA 524.2) p-Chlorotoluene ND ug/L 0.50 1 08/27/20 08/27/20 14:17 1271377 1271378 (EPA 524.2) p-Dichlorobenzene (1,4-DCB) ND ug/L 0.50 1 08/27/20 08/27/20 14:17 1271377 1271378 (EPA 524.2) p-Isopropyltoluene ND ug/L 0.50 1 08/27/20 08/27/20 14:17 1271377 1271378 (EPA 524.2) sec-Butylbenzene ND ug/L 0.50 1 08/27/20 08/27/20 14:17 1271377 1271378 (EPA 524.2) Styrene ND ug/L 0.50 1 08/27/20 08/27/20 14:17 1271377 1271378 (EPA 524.2) tert-amyl Methyl Ether ND ug/L 3.0 1 08/27/20 08/27/20 14:17 1271377 1271378 (EPA 524.2) tert-Butyl Ethyl Ether ND ug/L 3.0 1 08/27/20 08/27/20 14:17 1271377 1271378 (EPA 524.2) tert-Butylbenzene ND ug/L 0.50 1 08/27/20 08/27/20 14:17 1271377 1271378 (EPA 524.2) Tetrachloroethylene (PCE) ND ug/L 0.50 1 08/27/20 08/27/20 14:17 1271377 1271378 (EPA 524.2) Toluene ND ug/L 0.50 1 08/27/20 08/27/20 14:17 1271377 1271378 (EPA 524.2) Total 1,3-Dichloropropene ND ug/L 0.50 1 08/27/20 08/27/20 14:17 1271377 1271378 (EPA 524.2) Total THM 0.60 ug/L 0.50 1 08/27/20 08/27/20 14:17 1271377 1271378 (EPA 524.2) Total xylenes 5.0 ug/L 0.50 1 08/27/20 08/27/20 14:17 1271377 1271378 (EPA 524.2) trans-1,2-Dichloroethylene ND ug/L 0.50 1 08/27/20 08/27/20 14:17 1271377 1271378 (EPA 524.2) trans-1,3-Dichloropropene ND ug/L 0.50 1 08/27/20 08/27/20 14:17 1271377 1271378 (EPA 524.2) Trichloroethylene (TCE) ND ug/L 0.50 1 08/27/20 08/27/20 14:17 1271377 1271378 (EPA 524.2) Trichlorofluoromethane ND ug/L 0.50 1 08/27/20 08/27/20 14:17 1271377 1271378 (EPA 524.2) Trichlorotrifluoroethane(Freon 113) ND ug/L 0.50 1 08/27/20 08/27/20 14:17 1271377 1271378 (EPA 524.2) Vinyl chloride (VC) ND ug/L 0.30 1 08/27/20 08/27/20 14:17 1271377 1271378 (EPA 524.2) 1,2-Dichloroethane-d4 98 % 1 08/27/20 08/27/20 14:17 1271377 1271378 (EPA 524.2) 4-Bromofluorobenzene 101 % 1
Rounding on totals after summation.
(c) – indicates calculated results. Analysis is a calculated result. Reported results are not rounded until the
final step before reporting. Therefore methods that use a test result with further calculation may have slight
differences in final result than the component analyses.
Data Report – Page 8 of 9