W912DR18R0055_-_Attachment_AZ_-Draft_OU_8_Jul2016_Qtr_Monitoring_TM_092816.pdf

DRAFT TECHNICAL MEMORANDUM

QUARTERLY FENCE LINE MONITORING – JULY 2016

OPERABLE UNIT 8

SEPTEMBER 2016

DEFENSE SUPPLY CENTER RICHMOND, VIRGINIA

Introduction

This technical memorandum documents the results of the groundwater sampling activities conducted July

2016 at 28 monitoring wells located on Strathmore Road and the facility perimeter fence-line at Operable

Unit (OU) 8 (see Figure 1). This document is intended to be a brief summary of the monitoring events.

A full assessment, which will include additional data collected during semi-annual monitoring, will be provided in annual reporting documents.

Defense Supply Center Richmond (the installation) is an approximately 650-acre installation located near

Richmond, Virginia, and is the Defense Logistics Agency’s (DLA) aviation demand and supply chain manager. The Dervishian Army Reserve Center (ARC) is located in the northeast portion of the installation. The field activities presented herein were performed by AECOM Technical Services under the United States Army Corps of Engineers (USACE) Baltimore District Contract No. W912DR-13-D-

0016 Task Order No. 0001.

Field Activities

Field activities conducted in July 2016 included the collection of groundwater samples from twenty-five monitoring wells. Per the request of DLA, the sample matrix was updated to include 4 wells where concentrations were potentially increasing over time. A total of 4 wells that have shown stable or non-detect concentrations were eliminated from the monitoring event. These changes are shown on Table 1.

Groundwater samples were collected using low-flow sampling techniques outlined in the Quality

Assurance Project Plan (AECOM 2014). Monitoring wells were purged until well stabilization was achieved using a peristaltic pump and polyethylene tubing. Groundwater samples were then collected in laboratory supplied and certified bottles and forwarded to an off-site laboratory for volatile organic compounds (VOCs) analysis using SW-846 EPA Method 8260B. Appropriate quality assurance/quality control (QA/QC) samples (three duplicate samples, two matrix spike/matrix spike duplicate samples, one equipment blank and six trip blanks) were also collected.

Monitoring well sample locations are presented in Figure 1. The chain of custody forms, sample collection forms, and equipment calibration forms are provided as Attachment A. Laboratory analytical reports are provided as Attachment B.

Results

The following is a brief summary of the analytical results. A sample matrix is provided as Table 1. The groundwater sampling results are summarized in Table 2 and historical data is presented in Table 3.

Concentrations trend graphs for the monitored wells are provided as Attachment C.

A summary of the concentrations trends for each well are presented below:

• Concentrations at the following wells are below United States Environmental Protection Agency

(EPA) maximum contaminant levels (MCLs) during the current monitoring period:

o MWANP-16, MWANP-19, OU8-MW-96, OU8-MW-97, OU8-MW-98, OU8-MW-130, OU8-MW-131, OU8-MW-132, OU8-MW-133, OU8-MW-134, OU8-MW-146, OU8-

MW-147, OU8-MW-156, OU8-MW-158, OU8-MW-159, OU8-MW-160, and OU8-

MW-161.

Wells with trichloroethene (TCE) or tetrachloroethene (PCE) concentrations above MCLs are discussed below.

• OU8-MWANP-20 – Concentrations have shown an overall increase since 2013 with seasonal fluctuations. Currently, PCE is below the MCL and TCE is slightly above the MCL.

• OU8-MW-91 – Concentrations have shown an overall increase, with fluctuations of both PCE and TCE above and below their respective MCLs, with TCE remaining above the MCL since July

2015.

• OU8-MW-94 – TCE concentrations have steadily increased since 2012. PCE is below the MCL.

TCE has remained above the MCL since July 2014.

• OU8-MW-95 – PCE and TCE concentrations have remained fairly consistent with observed seasonal fluctuations of TCE concentrations just above and below the MCL.

• OU8-MW-100 – PCE and TCE concentrations have remained fairly consistent with peak concentrations in both observed in mid-2015. Currently, PCE is below the MCL and TCE is slightly above the MCL.

• OU8-MW-112 – PCE and TCE concentrations have remained fairly consistent since 2012 with fluctuations above and below their respective MCLs. Currently, PCE is below the MCL and TCE is slightly above the MCL.

• OU8-MW-125 – Concentrations have fluctuated since 2011, with a slight decreasing trend observed beginning in 2014. PCE has fluctuated above and below the MCL, and is currently below the MCL. TCE has remained slightly above the MCL.

• OU8-MW-126 – PCE concentrations have fluctuated throughout historical monitoring and have remained above the MCL. TCE concentrations have shown an overall decreasing trend and have remained above the MCL. Cis-1,2-DCE concentrations have shown an overall increasing trend since 2014.

• OU8-MW-127 – The in situ chemical oxidation (ISCO) pilot study was performed approximately

20 feet upgradient of this well in June 2014. Concentrations decreased rapidly following injections and rebound in PCE, TCE, and cis-1,2-DCE have been observed post-injection. PCE and TCE are currently above their respective MCLs.

• OU8-MW-128 – PCE concentrations have decreased since 2014. TCE and cis-1,2-DCE have remained relatively stable, with a current increase in cis-1,2-DCE.

• OU8-MW-148 – PCE and TCE concentrations have decreased slightly since 2015, with both remaining above their respective MCLs.

References

AECOM, 2013. Final Remedial Design/Remedial Action Work Plan Addendum for Operable Unit 8, Defense Supply Center Richmond, May 2013.

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OU8

July 2016 Sampling Locations

DEFENSE SUPPLY

CENTER RICHMOND

RICHMOND, VIRGINIA

AREA ENLARGED

DATE

CHKD

DRAWN

PROJ. NO.

Figure

0 200 400100 Feet

Robert Stubblefield

60332890

Robert Onderko

9/28/2016

\\USGRN1FP001\Data\Group\earth\DSCR\Maps\OU8 2016\Figure_1_OU8_July2016_Sampling_Locations.mxd

Legend !<B Upper WBU Monitoring Well Location

B Lower WBU Monitoring Well Location

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Extent of October 2015 PCE Plume

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Notes:

Off-installation features are approximate and based on a 2008 map obtained from Chesterfield County.

OU8 is the impacted groundwater underneath OU5.

K

Well to be SampledMW91

Tables

Table 1: OU 8 July 2016 Sample Matrix

Location ID WBU Dissolved

Gases VOCs

Common Anions

TOC

Field

Parameters

MWANP-16 Upper X X X X X MWANP-19 Upper X X X X X MWANP-20 Upper X X X X X OU8-MW-91 Upper X X X X X OU8-MW-94 Upper X X X X X OU8-MW-95 Upper X X X X X OU8-MW-96 Upper X X X X X OU8-MW-97 Upper X X X X X OU8-MW-98 Upper X X X X X OU8-MW-99 Upper OU8-MW-100 Upper X X X X X OU8-MW-112 Upper X X X X X OU8-MW-114 Upper OU8-MW-125 Upper X X X X X OU8-MW-126 Upper X X X X X OU8-MW-127 Upper X X X X X OU8-MW-128 Upper X X X X X OU8-MW-130 Upper X X X X X OU8-MW-131 Upper X X X X X OU8-MW-132 Upper X X X X X OU8-MW-133 Upper X X X X X OU8-MW-134 Upper X X X X X OU8-MW-145 Upper OU8-MW-146 Upper X X X X X OU8-MW-147 Upper X X X X X OU8-MW-148 Upper X X X X X OU8-MW-156 Upper X X X X X OU8-MW-157 Upper OU8-MW-158 Upper X X X X X OU8-MW-159 Upper X X X X X OU8-MW-160 Upper X X X X X OU8-MW-161 Upper X X X X X

Primary 28 28 28 28 28 Duplicates 3 3 3 3 0

MS/MSD 1 1 1 1 0

Total Samples 32 32 32 32 28

Notes Well Added Well Not Monitored

Table 2: OU 8 Analytical Results - July 2016

Location ID:

Date Sampled:

Sample Type:

Unit MCL

Water Quality Parameters

Dissolved Oxygen mg/L 0.81 0 1.86 4.33 4.84 NA 8.46 11.59 13.05 7.22 4.67 Oxidation Reduction Potential mV 410.8 438 368.8 345.9 367.8 NA 325.1 397 382.6 291.3 106.6 pH pH Units 4.84 4.82 5.27 3.65 4.27 NA 5.67 3.24 3.25 4.21 5.94 Conductivity mS/CM 0.056 0.067 0.066 0.074 0.045 NA 0.058 0.059 0.068 0.06 0.089 Temperature °C 18.96 17.38 19.06 22.04 19.63 NA 17.97 21.53 22.31 19.42 17.47 Turbidity NTU 16.5 5.4 26.4 7.9 4.3 NA 40.7 67 4.9 6.8 47.8

Alkalinity (A2320B) alkalinity, total (as CACO3) MG/L 13 12 12 4.5 J <5 U <5 U 13 <5 U 1.2 J 1.1 J 31

Dissolved Gases (RSK175) ethane UG/L <5.0 U <5.0 U <5.0 U <5.0 UJ <5.0 U <5.0 U <5.0 U <5.0 UJ <5.0 UJ <5.0 U <5.0 U ethene UG/L <5.0 U <5.0 U <5.0 U <5.0 UJ <5.0 U <5.0 U <5.0 U 0.5 J <5.0 UJ <5.0 U <5.0 U methane UG/L <5.0 U <5.0 U <5.0 U <5.0 UJ <5.0 U <5.0 U <5.0 U 1.8 J <5.0 UJ 0.44 J 0.24 J

Volatile Organic Compounds (SW8260B)

1,1,1,2-tetrachloroethane UG/L <1.0 U <1.0 U <1.0 U <1.0 U <1.0 U <1.0 U <1.0 U <1.0 U <1.0 U <1.0 U <1.0 U 1,1,1-trichloroethane UG/L 200 <1.0 U <1.0 U <1.0 U <1.0 U <1.0 U <1.0 U <1.0 U <1.0 U <1.0 U <1.0 U <1.0 U 1,1,2,2-tetrachloroethane UG/L <1.0 U <1.0 U <1.0 U <1.0 U <1.0 U <1.0 U <1.0 U <1.0 U <1.0 U <1.0 U <1.0 U 1,1,2-trichloroethane UG/L 5 <1.0 U <1.0 U <1.0 U <1.0 U <1.0 U <1.0 U <1.0 U <1.0 U <1.0 U <1.0 U <1.0 U 1,1-dichloroethane UG/L <1.0 U <1.0 U <1.0 U <1.0 U <1.0 U <1.0 U <1.0 U <1.0 U <1.0 U <1.0 U <1.0 U 1,1-dichloroethene UG/L 7 <1.0 U <1.0 U <1.0 U <1.0 U <1.0 U <1.0 U <1.0 U <1.0 U <1.0 U <1.0 U <1.0 U 1,1-dichloropropene UG/L <1.0 U <1.0 U <1.0 U <1.0 U <1.0 U <1.0 U <1.0 U <1.0 U <1.0 U <1.0 U <1.0 U 1,2,3-trichlorobenzene UG/L <1.0 U <1.0 U <1.0 U <1.0 U <1.0 U <1.0 U <1.0 U <1.0 U <1.0 U <1.0 U <1.0 U 1,2,3-trichloropropane UG/L <3.0 U <3.0 U <3.0 U <3.0 U <3.0 U <3.0 U <3.0 U <3.0 U <3.0 U <3.0 U <3.0 U 1,2,4-trichlorobenzene UG/L 70 <1.0 U <1.0 U <1.0 U <1.0 U <1.0 U <1.0 U <1.0 U <1.0 U <1.0 U <1.0 U <1.0 U 1,2,4-trimethylbenzene UG/L <1.0 U <1.0 U <1.0 U <1.0 U <1.0 U <1.0 U <1.0 U <1.0 U <1.0 U <1.0 U <1.0 U 1,2-dibromo-3-chloropropane UG/L 0.2 <5.0 U <5.0 U <5.0 U <5.0 U <5.0 U <5.0 U <5.0 U <5.0 U <5.0 U <5.0 U <5.0 U 1,2-dichlorobenzene UG/L 600 <1.0 U <1.0 U <1.0 U <1.0 U <1.0 U <1.0 U <1.0 U <1.0 U <1.0 U <1.0 U <1.0 U 1,2-dichloroethane UG/L 5 <1.0 U <1.0 U <1.0 U <1.0 U <1.0 U <1.0 U <1.0 U <1.0 U <1.0 U <1.0 U <1.0 U 1,2-dichloropropane UG/L 5 <1.0 U <1.0 U <1.0 U <1.0 U <1.0 U <1.0 U <1.0 U <1.0 U <1.0 U <1.0 U <1.0 U 1,3,5-trimethylbenzene UG/L <1.0 U <1.0 U <1.0 U <1.0 U <1.0 U <1.0 U <1.0 U <1.0 U <1.0 U <1.0 U <1.0 U 1,3-dichlorobenzene UG/L <1.0 U <1.0 U <1.0 U <1.0 U <1.0 U <1.0 U <1.0 U <1.0 U <1.0 U <1.0 U <1.0 U 1,3-dichloropropane UG/L <1.0 U <1.0 U <1.0 U <1.0 U <1.0 U <1.0 U <1.0 U <1.0 U <1.0 U <1.0 U <1.0 U 1,4-dichlorobenzene UG/L 75 <1.0 U <1.0 U <1.0 U <1.0 U <1.0 U <1.0 U <1.0 U <1.0 U <1.0 U <1.0 U <1.0 U 2,2-dichloropropane UG/L <1.0 U <1.0 U <1.0 U <1.0 U <1.0 U <1.0 U <1.0 U <1.0 U <1.0 U <1.0 U <1.0 U 2-butanone (MEK) UG/L <6.0 U <6.0 U <6.0 U <6.0 U <6.0 U <6.0 U <6.0 U <6.0 U <6.0 U <6.0 U <6.0 U 2-chlorotoluene UG/L <1.0 U <1.0 U <1.0 U <1.0 U <1.0 U <1.0 U <1.0 U <1.0 U <1.0 U <1.0 U <1.0 U 2-hexanone UG/L <5.0 U <5.0 U <5.0 U <5.0 U <5.0 U <5.0 U <5.0 U <5.0 U <5.0 U <5.0 U <5.0 U 4-chlorotoluene UG/L <1.0 U <1.0 U <1.0 U <1.0 U <1.0 U <1.0 U <1.0 U <1.0 U <1.0 U <1.0 U <1.0 U 4-methyl-2-pentanone (MIBK) UG/L <5.0 U <5.0 U <5.0 U <5.0 U <5.0 U <5.0 U <5.0 U <5.0 U <5.0 U <5.0 U <5.0 U acetone UG/L <10 U <10 U <10 U 3.8 B <10 U <10 U <10 U <10 U <10 U <10 U <10 U benzene UG/L 5 <1.0 U <1.0 U <1.0 U <1.0 U <1.0 U <1.0 U <1.0 U <1.0 U <1.0 U <1.0 U <1.0 U bromobenzene UG/L <1.0 U <1.0 U <1.0 U <1.0 U <1.0 U <1.0 U <1.0 U <1.0 U <1.0 U <1.0 U <1.0 U bromochloromethane UG/L <1.0 U <1.0 U <1.0 U <1.0 U <1.0 U <1.0 U <1.0 U <1.0 U <1.0 U <1.0 U <1.0 U bromodichloromethane UG/L 80 <1.0 U <1.0 U <1.0 U <1.0 U <1.0 U <1.0 U <1.0 U <1.0 U <1.0 U <1.0 U <1.0 U bromoform UG/L 80 <1.0 U <1.0 U <1.0 U <1.0 U <1.0 U <1.0 U <1.0 U <1.0 U <1.0 U <1.0 U <1.0 U bromomethane UG/L <2.0 U <2.0 U <2.0 U <2.0 U <2.0 U <2.0 U <2.0 U <2.0 U <2.0 U <2.0 U <2.0 U carbon disulfide UG/L <2.0 U <2.0 U <2.0 U <2.0 U <2.0 U <2.0 U <2.0 U <2.0 U <2.0 U <2.0 U <2.0 U carbon tetrachloride UG/L 5 <2.0 U <2.0 U <2.0 U <2.0 U <2.0 U <2.0 U <2.0 U <2.0 U <2.0 U <2.0 U <2.0 U

MWANP-16

7/13/2016 Normal

MWANP-19

7/13/2016 Normal

MWANP-20

7/13/2016 Normal

OU8-MW-91

7/12/2016 Normal

OU8-MW-94

7/13/2016 Duplicate

OU8-MW-94

7/13/2016 Normal

OU8-MW-98

7/14/2016 Normal

OU8-MW-100

7/13/2016 Normal

OU8-MW-95

7/13/2016 Normal

OU8-MW-96

7/12/2016 Normal

OU8-MW-97

7/12/2016 Normal

Date Sampled:

Sample Type:

Unit MCL

MWANP-16

7/13/2016 Normal

MWANP-19

7/13/2016 Normal

MWANP-20

7/13/2016 Normal

OU8-MW-91

7/12/2016 Normal

OU8-MW-94

7/13/2016 Duplicate

OU8-MW-94

7/13/2016 Normal

OU8-MW-98

7/14/2016 Normal

OU8-MW-100

7/13/2016 Normal

OU8-MW-95

7/13/2016 Normal

OU8-MW-96

7/12/2016 Normal

OU8-MW-97

7/12/2016 Normal chlorobenzene UG/L 100 <1.0 U <1.0 U <1.0 U <1.0 U <1.0 U <1.0 U <1.0 U <1.0 U <1.0 U <1.0 U <1.0 U chloroethane UG/L <2.0 U <2.0 U <2.0 U <2.0 U <2.0 U <2.0 U <2.0 U <2.0 U <2.0 U <2.0 U <2.0 U chloroform UG/L 80 <1.0 U <1.0 U <1.0 U <1.0 U <1.0 U <1.0 U <1.0 U <1.0 U <1.0 U <1.0 U <1.0 U chloromethane UG/L <2.0 U <2.0 U <2.0 U 0.41 J <2.0 U <2.0 U 0.47 J <2.0 U <2.0 U <2.0 U <2.0 U cis-1,2-dichloroethene UG/L 70 <1.0 U <1.0 U 0.98 J 0.54 J 1.4 1.4 0.99 J <1.0 U <1.0 U <1.0 U 0.89 J cis-1,3-dichloropropene UG/L <1.0 U <1.0 U <1.0 U <1.0 U <1.0 U <1.0 U <1.0 U <1.0 U <1.0 U <1.0 U <1.0 U dibromochloromethane UG/L 80 <1.0 U <1.0 U <1.0 U <1.0 U <1.0 U <1.0 U <1.0 U <1.0 U <1.0 U <1.0 U <1.0 U dibromomethane UG/L <1.0 U <1.0 U <1.0 U <1.0 U <1.0 U <1.0 U <1.0 U <1.0 U <1.0 U <1.0 U <1.0 U dichlorodifluoromethane UG/L <2.0 U <2.0 U <2.0 U <2.0 U <2.0 U <2.0 U <2.0 U <2.0 U <2.0 U <2.0 U <2.0 U ethylbenzene UG/L 700 <1.0 U <1.0 U <1.0 U <1.0 U <1.0 U <1.0 U <1.0 U <1.0 U <1.0 U <1.0 U <1.0 U ethylene dibromide (EDB) UG/L <1.0 U <1.0 U <1.0 U <1.0 U <1.0 U <1.0 U <1.0 U <1.0 U <1.0 U <1.0 U <1.0 U hexachlorobutadiene UG/L <1.0 U <1.0 U <1.0 U <1.0 U <1.0 U <1.0 U <1.0 U <1.0 U <1.0 U <1.0 U <1.0 U isopropylbenzene UG/L <1.0 U <1.0 U <1.0 U <1.0 U <1.0 U <1.0 U <1.0 U <1.0 U <1.0 U <1.0 U <1.0 U m- & p-xylene UG/L <2.0 U <2.0 U <2.0 U <2.0 U <2.0 U <2.0 U <2.0 U <2.0 U <2.0 U <2.0 U <2.0 U methyl tert-butyl ether (MTBE) UG/L <5.0 U <5.0 U <5.0 U <5.0 U <5.0 U <5.0 U <5.0 U <5.0 U <5.0 U <5.0 U <5.0 U methylene chloride UG/L 5 <5.0 U <5.0 U <5.0 U 1 B <5.0 U <5.0 U <5.0 U 0.33 B <5.0 U <5.0 U <5.0 U n-butylbenzene UG/L <1.0 U <1.0 U <1.0 U <1.0 U <1.0 U <1.0 U <1.0 U <1.0 U <1.0 U <1.0 U <1.0 U n-propylbenzene UG/L <1.0 U <1.0 U <1.0 U <1.0 U <1.0 U <1.0 U <1.0 U <1.0 U <1.0 U <1.0 U <1.0 U o-xylene UG/L <1.0 U <1.0 U <1.0 U <1.0 U <1.0 U <1.0 U <1.0 U <1.0 U <1.0 U <1.0 U <1.0 U p-isopropyltoluene UG/L <1.0 U <1.0 U <1.0 U <1.0 U <1.0 U <1.0 U <1.0 U <1.0 U <1.0 U <1.0 U <1.0 U sec-butylbenzene UG/L <1.0 U <1.0 U <1.0 U <1.0 U <1.0 U <1.0 U <1.0 U <1.0 U <1.0 U <1.0 U <1.0 U styrene UG/L 100 <1.0 U <1.0 U <1.0 U <1.0 U <1.0 U <1.0 U <1.0 U <1.0 U <1.0 U <1.0 U <1.0 U tert-butylbenzene UG/L <1.0 U <1.0 U <1.0 U <1.0 U <1.0 U <1.0 U <1.0 U <1.0 U <1.0 U <1.0 U <1.0 U tetrachloroethene (PCE) UG/L 5 <1.0 U 1.2 3.1 12 3.4 3.4 1.4 1.9 0.92 J 2.1 1.5 toluene UG/L 1000 <1.0 U <1.0 U <1.0 U <1.0 U <1.0 U <1.0 U <1.0 U <1.0 U <1.0 U <1.0 U <1.0 U trans-1,2-dichloroethene UG/L 100 <1.0 U <1.0 U <1.0 U <1.0 U <1.0 U <1.0 U <1.0 U <1.0 U <1.0 U <1.0 U <1.0 U trans-1,3-dichloropropene UG/L <1.0 U <1.0 U <1.0 U <1.0 U <1.0 U <1.0 U <1.0 U <1.0 U <1.0 U <1.0 U <1.0 U trichloroethene (TCE) UG/L 5 <1.0 U 1.4 6.6 26 9.9 9.8 5.2 3 1.2 2.8 5.3 trichlorofluoromethane UG/L <2.0 U <2.0 U <2.0 U 0.6 J <2.0 U <2.0 U <2.0 U <2.0 U <2.0 U <2.0 U <2.0 U vinyl chloride UG/L 2 <1.5 U <1.5 U <1.5 U <1.5 U <1.5 U <1.5 U <1.5 U <1.5 U <1.5 U <1.5 U <1.5 U

Anions (SW9056) chloride (as CL) MG/L 3.6 4.3 5 6.1 5.5 5.6 4.4 6.3 6.3 8.4 5.3 sulfate (as SO4) MG/L 1.9 5 5.1 0.9 B 0.34 J <5.0 U 0.73 J 0.68 B 1.7 B 0.43 J 3.2 J

Total Organic Carbon (SW9060A) total organic carbon MG/L 1.2 1.4 0.69 B 0.51 J 0.51 B 0.51 B 0.62 B 0.41 J 0.56 J 0.49 B 0.72 B

UJ - The analyte was not detected; however, the result is estimated due to discrepancies in meeting certain analyte-specific quality control criteria.

Blue highlighting indicates analyte detected above MCL.

B - Blank contamination: The analyte was found in an associated blank above one half the RL, as well as in the sample.

J - Estimated: The analyte was positively identified, the quantitation is an estimation due to discrepancies in meeting certain analyte-specific quality control criteria.

MCL - Maximum Contaminant Limit

NA - not analyzed U - Undetected: The analyte was analyzed for, but not detected.

Date Sampled:

Sample Type:

Unit MCL

Water Quality Parameters

Dissolved Oxygen mg/L Oxidation Reduction Potential mV pH pH Units Conductivity mS/CM Temperature °C Turbidity NTU

Alkalinity (A2320B) alkalinity, total (as CACO3) MG/L

Dissolved Gases (RSK175) ethane UG/L ethene UG/L methane UG/L

Volatile Organic Compounds (SW8260B)

1,1,1,2-tetrachloroethane UG/L 1,1,1-trichloroethane UG/L 200 1,1,2,2-tetrachloroethane UG/L 1,1,2-trichloroethane UG/L 5 1,1-dichloroethane UG/L 1,1-dichloroethene UG/L 7 1,1-dichloropropene UG/L 1,2,3-trichlorobenzene UG/L 1,2,3-trichloropropane UG/L 1,2,4-trichlorobenzene UG/L 70 1,2,4-trimethylbenzene UG/L 1,2-dibromo-3-chloropropane UG/L 0.2 1,2-dichlorobenzene UG/L 600 1,2-dichloroethane UG/L 5 1,2-dichloropropane UG/L 5 1,3,5-trimethylbenzene UG/L 1,3-dichlorobenzene UG/L 1,3-dichloropropane UG/L 1,4-dichlorobenzene UG/L 75 2,2-dichloropropane UG/L 2-butanone (MEK) UG/L 2-chlorotoluene UG/L 2-hexanone UG/L 4-chlorotoluene UG/L 4-methyl-2-pentanone (MIBK) UG/L acetone UG/L benzene UG/L 5 bromobenzene UG/L bromochloromethane UG/L bromodichloromethane UG/L 80 bromoform UG/L 80 bromomethane UG/L carbon disulfide UG/L carbon tetrachloride UG/L 5

0 0 0 1.23 NA 1.95 0 NA 0 0 0

412.3 349.5 292.6 365.5 NA 341.1 328.1 NA 377.7 399.5 450.7

4.04 4.16 4.31 2.67 NA 4.63 4.15 NA 2.9 2.69 2.7

0.05 0.59 0.06 0.99 NA 0.149 0.091 NA 0.086 0.088 0.087

19.32 23.58 19.09 21.21 NA 22.61 17.84 NA 18.55 17.19 18.4

7.3 7.2 5.2 12.1 NA 27.1 3.9 NA 60.2 0 0

1.7 J <5 U <5 U <5 U <5 U 9 <5 U <5 U <5 U <5 U <5 U

<5.0 U <5.0 U <5.0 U <5.0 UJ <5.0 UJ NA <5.0 UJ <5.0 UJ <5.0 UJ <5.0 UJ <5.0 UJ

<5.0 U <5.0 U <5.0 U <5.0 UJ <5.0 UJ NA <5.0 UJ <5.0 UJ <5.0 UJ <5.0 UJ <5.0 UJ

<5.0 U <5.0 U 150 2900 J 2800 J NA <5.0 UJ <5.0 UJ <5.0 UJ <5.0 UJ <5.0 UJ

<1.0 U <1.0 U <1.0 U <1.0 U <1.0 U <1.0 U <1.0 U <1.0 U <1.0 U <1.0 U <1.0 U <1.0 U <1.0 U <1.0 U <1.0 U <1.0 U <1.0 U <1.0 U <1.0 U <1.0 U <1.0 U <1.0 U <1.0 U <1.0 U <1.0 U <1.0 U <1.0 U <1.0 U <1.0 U <1.0 U <1.0 U <1.0 U <1.0 U <1.0 U <1.0 U <1.0 U <1.0 U <1.0 U <1.0 U <1.0 U <1.0 U <1.0 U <1.0 U <1.0 U <1.0 U <1.0 U <1.0 U <1.0 U <1.0 U <1.0 U <1.0 U <1.0 U <1.0 U <1.0 U <1.0 U <1.0 U <1.0 U <1.0 U 0.16 J <1.0 U <1.0 U <1.0 U <1.0 U <1.0 U <1.0 U <1.0 U <1.0 U <1.0 U <1.0 U <1.0 U <1.0 U <1.0 U <1.0 U <1.0 U <1.0 U <1.0 U <1.0 U <1.0 U <1.0 U <1.0 U <1.0 U <1.0 U <1.0 U <1.0 U <1.0 U <1.0 U <1.0 U <1.0 U <3.0 U <3.0 U <3.0 U <3.0 U <3.0 U <3.0 U <3.0 U <3.0 U <3.0 U <3.0 U <3.0 U <1.0 U <1.0 U <1.0 U <1.0 U <1.0 U <1.0 U <1.0 U <1.0 U <1.0 U <1.0 U <1.0 U <1.0 U <1.0 U <1.0 U <1.0 U <1.0 U <1.0 U <1.0 U <1.0 U <1.0 U <1.0 U <1.0 U <5.0 U <5.0 U <5.0 U <5.0 U <5.0 U <5.0 U <5.0 U <5.0 U <5.0 U <5.0 U <5.0 U <1.0 U <1.0 U <1.0 U <1.0 U <1.0 U <1.0 U <1.0 U <1.0 U <1.0 U <1.0 U <1.0 U <1.0 U <1.0 U 0.55 J 1.3 1.3 0.89 J <1.0 U <1.0 U <1.0 U <1.0 U <1.0 U <1.0 U <1.0 U <1.0 U <1.0 U <1.0 U <1.0 U <1.0 U <1.0 U <1.0 U <1.0 U <1.0 U <1.0 U <1.0 U <1.0 U <1.0 U <1.0 U <1.0 U <1.0 U <1.0 U <1.0 U <1.0 U <1.0 U <1.0 U <1.0 U <1.0 U <1.0 U <1.0 U <1.0 U <1.0 U <1.0 U <1.0 U <1.0 U <1.0 U <1.0 U <1.0 U <1.0 U <1.0 U <1.0 U <1.0 U <1.0 U <1.0 U <1.0 U <1.0 U <1.0 U <1.0 U <1.0 U <1.0 U <1.0 U <1.0 U <1.0 U <1.0 U <1.0 U <1.0 U <1.0 U <1.0 U <1.0 U <1.0 U <1.0 U <1.0 U <1.0 U <1.0 U <1.0 U <1.0 U <1.0 U <1.0 U <1.0 U <6.0 U <6.0 U <6.0 U <6.0 U <6.0 U <6.0 U <6.0 U <6.0 U <6.0 U <6.0 U <6.0 U <1.0 U <1.0 U <1.0 U <1.0 U <1.0 U <1.0 U <1.0 U <1.0 U <1.0 U <1.0 U <1.0 U <5.0 U <5.0 U <5.0 U <5.0 U <5.0 U <5.0 U <5.0 U <5.0 U <5.0 U <5.0 U <5.0 U <1.0 U <1.0 U <1.0 U <1.0 U <1.0 U <1.0 U <1.0 U <1.0 U <1.0 U <1.0 U <1.0 U <5.0 U <5.0 U <5.0 U <5.0 U <5.0 U <5.0 U <5.0 U <5.0 U <5.0 U <5.0 U <5.0 U <10 U <10 U <10 U <10 U <10 U <10 U <10 U <10 U <10 U <10 U <10 U <1.0 U <1.0 U <1.0 U <1.0 U <1.0 U <1.0 U <1.0 U <1.0 U <1.0 U <1.0 U <1.0 U <1.0 U <1.0 U <1.0 U <1.0 U <1.0 U <1.0 U <1.0 U <1.0 U <1.0 U <1.0 U <1.0 U <1.0 U <1.0 U <1.0 U <1.0 U <1.0 U <1.0 U <1.0 U <1.0 U <1.0 U <1.0 U <1.0 U <1.0 U <1.0 U <1.0 U <1.0 U <1.0 U <1.0 U <1.0 U <1.0 U <1.0 U <1.0 U <1.0 U <1.0 U <1.0 U <1.0 U <1.0 U <1.0 U <1.0 U <1.0 U <1.0 U <1.0 U <1.0 U <1.0 U <2.0 U <2.0 U <2.0 U <2.0 U <2.0 U <2.0 U <2.0 U <2.0 U <2.0 U <2.0 U <2.0 U <2.0 U <2.0 U <2.0 U <2.0 U <2.0 U <2.0 U <2.0 U <2.0 U <2.0 U <2.0 U <2.0 U <2.0 U <2.0 U <2.0 U <2.0 U <2.0 U <2.0 U <2.0 U <2.0 U <2.0 U <2.0 U <2.0 U

OU8-MW-127

7/12/2016 Duplicate

OU8-MW-128

7/11/2016 Normal

OU8-MW-130

7/12/2016 Duplicate

OU8-MW-130

7/12/2016 Normal

OU8-MW-131

7/12/2016 Normal

OU8-MW-132

7/12/2016 Normal

OU8-MW-133

7/12/2016 Normal

OU8-MW-127

7/12/2016 Normal

OU8-MW-112

7/13/2016 Normal

OU8-MW-125

7/13/2016 Normal

OU8-MW-126

7/13/2016

Date Sampled:

Sample Type:

Unit MCL chlorobenzene UG/L 100 chloroethane UG/L chloroform UG/L 80 chloromethane UG/L cis-1,2-dichloroethene UG/L 70 cis-1,3-dichloropropene UG/L dibromochloromethane UG/L 80 dibromomethane UG/L dichlorodifluoromethane UG/L ethylbenzene UG/L 700 ethylene dibromide (EDB) UG/L hexachlorobutadiene UG/L isopropylbenzene UG/L m- & p-xylene UG/L methyl tert-butyl ether (MTBE) UG/L methylene chloride UG/L 5 n-butylbenzene UG/L n-propylbenzene UG/L o-xylene UG/L p-isopropyltoluene UG/L sec-butylbenzene UG/L styrene UG/L 100 tert-butylbenzene UG/L tetrachloroethene (PCE) UG/L 5 toluene UG/L 1000 trans-1,2-dichloroethene UG/L 100 trans-1,3-dichloropropene UG/L trichloroethene (TCE) UG/L 5 trichlorofluoromethane UG/L vinyl chloride UG/L 2

Anions (SW9056) chloride (as CL) MG/L sulfate (as SO4) MG/L

Total Organic Carbon (SW9060A) total organic carbon MG/L

UJ - The analyte was not detected; however, the result is estimated due to discrepancies in meeting certain analyte-specific quality control criteria.

Blue highlighting indicates analyte detected above MCL.

B - Blank contamination: The analyte was found in an associated blank above one half the RL, as well as in the sample.

J - Estimated: The analyte was positively identified, the quantitation is an estimation due to discrepancies in meeting certain analyte-specific quality control criteria.

MCL - Maximum Contaminant Limit

NA - not analyzed U - Undetected: The analyte was analyzed for, but not detected.

OU8-MW-127

7/12/2016 Duplicate

OU8-MW-128

7/11/2016 Normal

OU8-MW-130

7/12/2016 Duplicate

OU8-MW-130

7/12/2016 Normal

OU8-MW-131

7/12/2016 Normal

OU8-MW-132

7/12/2016 Normal

OU8-MW-133

7/12/2016 Normal

OU8-MW-127

7/12/2016 Normal

OU8-MW-112

7/13/2016 Normal

OU8-MW-125

7/13/2016 Normal

OU8-MW-126

7/13/2016 Normal

<1.0 U <1.0 U <1.0 U <1.0 U <1.0 U <1.0 U <1.0 U <1.0 U <1.0 U <1.0 U <1.0 U <2.0 U <2.0 U <2.0 U <2.0 U <2.0 U <2.0 U <2.0 U <2.0 U <2.0 U <2.0 U <2.0 U <1.0 U <1.0 U 0.22 J 0.17 J 0.18 J 0.2 J 1 0.99 J 2.7 1.5 1.5 <2.0 U <2.0 U <2.0 U 0.32 J <2.0 U 0.56 J <2.0 U <2.0 U <2.0 U <2.0 U <2.0 U <1.0 U <1.0 U 7.5 45 44 36 J <1.0 U <1.0 U <1.0 U <1.0 U <1.0 U <1.0 U <1.0 U <1.0 U <1.0 U <1.0 U <1.0 U <1.0 U <1.0 U <1.0 U <1.0 U <1.0 U <1.0 U <1.0 U <1.0 U <1.0 U <1.0 U <1.0 U <1.0 U <1.0 U <1.0 U <1.0 U <1.0 U <1.0 U <1.0 U <1.0 U <1.0 U <1.0 U <1.0 U <1.0 U <1.0 U <1.0 U <1.0 U <1.0 U <2.0 U <2.0 U <2.0 U <2.0 U <2.0 U <2.0 U <2.0 U <2.0 U <2.0 U <2.0 U <2.0 U <1.0 U <1.0 U <1.0 U <1.0 U <1.0 U <1.0 U <1.0 U <1.0 U <1.0 U <1.0 U <1.0 U <1.0 U <1.0 U <1.0 U <1.0 U <1.0 U <1.0 U <1.0 U <1.0 U <1.0 U <1.0 U <1.0 U <1.0 U <1.0 U <1.0 U <1.0 U <1.0 U <1.0 U <1.0 U <1.0 U <1.0 U <1.0 U <1.0 U <1.0 U <1.0 U <1.0 U <1.0 U <1.0 U <1.0 U <1.0 U <1.0 U <1.0 U <1.0 U <1.0 U <2.0 U <2.0 U <2.0 U <2.0 U <2.0 U <2.0 U <2.0 U <2.0 U <2.0 U <2.0 U <2.0 U <5.0 U <5.0 U 1.5 J 1.4 J 1.4 J 0.34 J <5.0 U <5.0 U <5.0 U <5.0 U <5.0 U <5.0 U <5.0 U <5.0 U <5.0 U <5.0 U <5.0 U <5.0 U <5.0 U <5.0 U <5.0 U <5.0 U <1.0 U <1.0 U <1.0 U <1.0 U <1.0 U <1.0 U <1.0 U <1.0 U <1.0 U <1.0 U <1.0 U <1.0 U <1.0 U <1.0 U <1.0 U <1.0 U <1.0 U <1.0 U <1.0 U <1.0 U <1.0 U <1.0 U <1.0 U <1.0 U <1.0 U <1.0 U <1.0 U <1.0 U <1.0 U <1.0 U <1.0 U <1.0 U <1.0 U <1.0 U <1.0 U <1.0 U <1.0 U <1.0 U <1.0 U <1.0 U <1.0 U <1.0 U <1.0 U <1.0 U <1.0 U <1.0 U <1.0 U <1.0 U <1.0 U <1.0 U <1.0 U <1.0 U <1.0 U <1.0 U <1.0 U <1.0 U <1.0 U <1.0 U <1.0 U <1.0 U <1.0 U <1.0 U <1.0 U <1.0 U <1.0 U <1.0 U <1.0 U <1.0 U <1.0 U <1.0 U <1.0 U <1.0 U <1.0 U <1.0 U <1.0 U <1.0 U <1.0 U

2.7 2.8 25 35 34 15 1.7 1.8 0.31 J 0.25 J 0.23 J <1.0 U <1.0 U <1.0 U <1.0 U <1.0 U <1.0 U <1.0 U <1.0 U <1.0 U <1.0 U <1.0 U <1.0 U <1.0 U <1.0 U <1.0 U <1.0 U 2.4 <1.0 U <1.0 U <1.0 U <1.0 U <1.0 U <1.0 U <1.0 U <1.0 U <1.0 U <1.0 U <1.0 U <1.0 U <1.0 U <1.0 U <1.0 U <1.0 U

5.5 5.5 10 12 11 5.2 2.9 3 0.58 J 0.45 J 0.42 J <2.0 U <2.0 U <2.0 U <2.0 U <2.0 U <2.0 U <2.0 U <2.0 U <2.0 U <2.0 U <2.0 U <1.5 U <1.5 U <1.5 U 0.12 J <1.5 U <1.5 U <1.5 U <1.5 U <1.5 U <1.5 U <1.5 U

6.5 8.2 8.1 9.8 9.6 NA 13 13 12 13 13

1 J 0.92 J 1.2 J 8.4 7.9 NA 1.4 B 1.3 B 2.2 B 2.3 B 1.6 B

0.52 B 0.83 B 0.67 B 0.91 J 0.94 J 0.66 J 0.5 J 0.36 J 0.43 J 0.42 J 0.47 J

Date Sampled:

Sample Type:

Unit MCL

Water Quality Parameters

Dissolved Oxygen mg/L Oxidation Reduction Potential mV pH pH Units Conductivity mS/CM Temperature °C Turbidity NTU

Alkalinity (A2320B) alkalinity, total (as CACO3) MG/L

Dissolved Gases (RSK175) ethane UG/L ethene UG/L methane UG/L

Volatile Organic Compounds (SW8260B)

1,1,1,2-tetrachloroethane UG/L 1,1,1-trichloroethane UG/L 200 1,1,2,2-tetrachloroethane UG/L 1,1,2-trichloroethane UG/L 5 1,1-dichloroethane UG/L 1,1-dichloroethene UG/L 7 1,1-dichloropropene UG/L 1,2,3-trichlorobenzene UG/L 1,2,3-trichloropropane UG/L 1,2,4-trichlorobenzene UG/L 70 1,2,4-trimethylbenzene UG/L 1,2-dibromo-3-chloropropane UG/L 0.2 1,2-dichlorobenzene UG/L 600 1,2-dichloroethane UG/L 5 1,2-dichloropropane UG/L 5 1,3,5-trimethylbenzene UG/L 1,3-dichlorobenzene UG/L 1,3-dichloropropane UG/L 1,4-dichlorobenzene UG/L 75 2,2-dichloropropane UG/L 2-butanone (MEK) UG/L 2-chlorotoluene UG/L 2-hexanone UG/L 4-chlorotoluene UG/L 4-methyl-2-pentanone (MIBK) UG/L acetone UG/L benzene UG/L 5 bromobenzene UG/L bromochloromethane UG/L bromodichloromethane UG/L 80 bromoform UG/L 80 bromomethane UG/L carbon disulfide UG/L carbon tetrachloride UG/L 5

0 0 0 11.96 10.65 0 14.36 12.86 16.38

449.2 371.2 366.1 376.8 359.1 435.9 356.6 363.2 355.9

2.62 5.8 5.29 4.02 3.96 4.77 3.98 3.98 3.89

0.78 0.034 0.052 0.062 0.061 0.165 0.069 0.07 0.074

17.27 17 16.97 20.9 21.95 18.07 19.4 19.76 19.36 0 174.3 67.8 6.1 21.6 5.4 6.4 101 75.7

<5 U 3.2 J 1.1 J 1.2 J 4.3 B <5 U <5 U <5 U <5 U

<5.0 UJ <5.0 U <5.0 U <5.0 U <5.0 UJ <5.0 U <5.0 U <5.0 U <5.0 U

<5.0 UJ <5.0 U <5.0 U <5.0 U <5.0 UJ <5.0 U <5.0 U <5.0 U <5.0 U

<5.0 UJ <5.0 U <5.0 U <5.0 U 0.46 J <5.0 U 0.34 J <5.0 U 1 J

<1.0 U <1.0 U <1.0 U <1.0 U <1.0 U <1.0 U <1.0 U <1.0 U <1.0 U <1.0 U <1.0 U <1.0 U <1.0 U <1.0 U <1.0 U <1.0 U <1.0 U <1.0 U <1.0 U <1.0 U <1.0 U <1.0 U <1.0 U <1.0 U <1.0 U <1.0 U <1.0 U <1.0 U <1.0 U <1.0 U <1.0 U <1.0 U <1.0 U <1.0 U <1.0 U <1.0 U <1.0 U <1.0 U <1.0 U <1.0 U <1.0 U <1.0 U <1.0 U <1.0 U <1.0 U <1.0 U <1.0 U <1.0 U <1.0 U <1.0 U <1.0 U <1.0 U <1.0 U <1.0 U <1.0 U <1.0 U <1.0 U <1.0 U <1.0 U <1.0 U <1.0 U <1.0 U <1.0 U <1.0 U <1.0 U <1.0 U <1.0 U <1.0 U <1.0 U <1.0 U <1.0 U <1.0 U <3.0 U <3.0 U <3.0 U <3.0 U <3.0 U <3.0 U <3.0 U <3.0 U <3.0 U <1.0 U <1.0 U <1.0 U <1.0 U <1.0 U <1.0 U <1.0 U <1.0 U <1.0 U <1.0 U <1.0 U <1.0 U <1.0 U <1.0 U <1.0 U <1.0 U <1.0 U <1.0 U <5.0 U <5.0 U <5.0 U <5.0 U <5.0 U <5.0 U <5.0 U <5.0 U <5.0 U <1.0 U <1.0 U <1.0 U <1.0 U <1.0 U <1.0 U <1.0 U <1.0 U <1.0 U <1.0 U <1.0 U <1.0 U <1.0 U <1.0 U <1.0 U <1.0 U <1.0 U <1.0 U <1.0 U <1.0 U <1.0 U <1.0 U <1.0 U <1.0 U <1.0 U <1.0 U <1.0 U <1.0 U <1.0 U <1.0 U <1.0 U <1.0 U <1.0 U <1.0 U <1.0 U <1.0 U <1.0 U <1.0 U <1.0 U <1.0 U <1.0 U <1.0 U <1.0 U <1.0 U <1.0 U <1.0 U <1.0 U <1.0 U <1.0 U <1.0 U <1.0 U <1.0 U <1.0 U <1.0 U <1.0 U <1.0 U <1.0 U <1.0 U <1.0 U <1.0 U <1.0 U <1.0 U <1.0 U <1.0 U <1.0 U <1.0 U <1.0 U <1.0 U <1.0 U <1.0 U <1.0 U <1.0 U <6.0 U <6.0 U <6.0 U <6.0 U <6.0 U <6.0 U <6.0 U <6.0 U <6.0 U <1.0 U <1.0 U <1.0 U <1.0 U <1.0 U <1.0 U <1.0 U <1.0 U <1.0 U <5.0 U <5.0 U <5.0 U <5.0 U <5.0 U <5.0 U <5.0 U <5.0 U <5.0 U <1.0 U <1.0 U <1.0 U <1.0 U <1.0 U <1.0 U <1.0 U <1.0 U <1.0 U <5.0 U <5.0 U <5.0 U <5.0 U <5.0 U <5.0 U <5.0 U <5.0 U <5.0 U <10 U <10 U <10 U <10 U 4.2 B <10 U <10 U <10 U <10 U <1.0 U <1.0 U <1.0 U <1.0 U <1.0 U <1.0 U <1.0 U <1.0 U <1.0 U <1.0 U <1.0 U <1.0 U <1.0 U <1.0 U <1.0 U <1.0 U <1.0 U <1.0 U <1.0 U <1.0 U <1.0 U <1.0 U <1.0 U <1.0 U <1.0 U <1.0 U <1.0 U <1.0 U <1.0 U <1.0 U <1.0 U <1.0 U <1.0 U 0.18 J 0.24 J <1.0 U <1.0 U <1.0 U <1.0 U <1.0 U <1.0 U <1.0 U <1.0 U <1.0 U <1.0 U <2.0 U <2.0 U <2.0 U <2.0 U <2.0 U <2.0 U <2.0 U <2.0 U <2.0 U <2.0 U <2.0 U <2.0 U <2.0 U <2.0 U <2.0 U <2.0 U <2.0 U <2.0 U <2.0 U <2.0 U <2.0 U <2.0 U <2.0 U <2.0 U <2.0 U <2.0 U <2.0 U

OU8-MW-148

7/11/2016 Normal

OU8-MW-156

7/12/2016 Normal

OU8-MW-158

7/13/2016 Normal

OU8-MW-159

7/11/2016 Normal

OU8-MW-161

7/11/2016 Normal

OU8-MW-134

7/12/2016 Normal

OU8-MW-146

7/11/2016 Normal

OU8-MW-147

7/11/2016 Normal

OU8-MW-160

7/11/2016

Date Sampled:

Sample Type:

Unit MCL chlorobenzene UG/L 100 chloroethane UG/L chloroform UG/L 80 chloromethane UG/L cis-1,2-dichloroethene UG/L 70 cis-1,3-dichloropropene UG/L dibromochloromethane UG/L 80 dibromomethane UG/L dichlorodifluoromethane UG/L ethylbenzene UG/L 700 ethylene dibromide (EDB) UG/L hexachlorobutadiene UG/L isopropylbenzene UG/L m- & p-xylene UG/L methyl tert-butyl ether (MTBE) UG/L methylene chloride UG/L 5 n-butylbenzene UG/L n-propylbenzene UG/L o-xylene UG/L p-isopropyltoluene UG/L sec-butylbenzene UG/L styrene UG/L 100 tert-butylbenzene UG/L tetrachloroethene (PCE) UG/L 5 toluene UG/L 1000 trans-1,2-dichloroethene UG/L 100 trans-1,3-dichloropropene UG/L trichloroethene (TCE) UG/L 5 trichlorofluoromethane UG/L vinyl chloride UG/L 2

Anions (SW9056) chloride (as CL) MG/L sulfate (as SO4) MG/L

Total Organic Carbon (SW9060A) total organic carbon MG/L

UJ - The analyte was not detected; however, the result is estimated due to discrepancies in meeting certain analyte-specific quality control criteria.

Blue highlighting indicates analyte detected above MCL.

B - Blank contamination: The analyte was found in an associated blank above one half the RL, as well as in the sample.

J - Estimated: The analyte was positively identified, the quantitation is an estimation due to discrepancies in meeting certain analyte-specific quality control criteria.

MCL - Maximum Contaminant Limit

NA - not analyzed U - Undetected: The analyte was analyzed for, but not detected.

OU8-MW-148

7/11/2016 Normal

OU8-MW-156

7/12/2016 Normal

OU8-MW-158

7/13/2016 Normal

OU8-MW-159

7/11/2016 Normal

OU8-MW-161

7/11/2016 Normal

OU8-MW-134

7/12/2016 Normal

OU8-MW-146

7/11/2016 Normal

OU8-MW-147

7/11/2016 Normal

OU8-MW-160

7/11/2016 Normal

<1.0 U <1.0 U <1.0 U <1.0 U <1.0 U <1.0 U <1.0 U <1.0 U <1.0 U <2.0 U <2.0 U <2.0 U <2.0 U <2.0 U <2.0 U <2.0 U <2.0 U <2.0 U

1.2 <1.0 U <1.0 U 0.66 J 0.18 J 0.35 J 1.8 2.1 0.16 J <2.0 U <2.0 U 0.39 J <2.0 U <2.0 U <2.0 U <2.0 U 0.3 J <2.0 U <1.0 U <1.0 U <1.0 U 1.6 <1.0 U <1.0 U <1.0 U <1.0 U 2.1 <1.0 U <1.0 U <1.0 U <1.0 U <1.0 U <1.0 U <1.0 U <1.0 U <1.0 U <1.0 U <1.0 U <1.0 U <1.0 U <1.0 U <1.0 U <1.0 U <1.0 U <1.0 U <1.0 U <1.0 U <1.0 U <1.0 U <1.0 U <1.0 U <1.0 U <1.0 U <1.0 U <2.0 U <2.0 U <2.0 U <2.0 U <2.0 U <2.0 U <2.0 U <2.0 U <2.0 U <1.0 U <1.0 U <1.0 U <1.0 U <1.0 U <1.0 U <1.0 U <1.0 U <1.0 U <1.0 U <1.0 U <1.0 U <1.0 U <1.0 U <1.0 U <1.0 U <1.0 U <1.0 U <1.0 U <1.0 U <1.0 U <1.0 U <1.0 U <1.0 U <1.0 U <1.0 U <1.0 U <1.0 U <1.0 U <1.0 U <1.0 U <1.0 U <1.0 U <1.0 U <1.0 U <1.0 U <2.0 U <2.0 U <2.0 U <2.0 U <2.0 U <2.0 U <2.0 U <2.0 U <2.0 U <5.0 U <5.0 U <5.0 U <5.0 U <5.0 U 0.52 J <5.0 U <5.0 U <5.0 U <5.0 U <5.0 U <5.0 U <5.0 U 0.32 B <5.0 U <5.0 U <5.0 U <5.0 U <1.0 U <1.0 U <1.0 U <1.0 U <1.0 U <1.0 U <1.0 U <1.0 U <1.0 U <1.0 U <1.0 U <1.0 U <1.0 U <1.0 U <1.0 U <1.0 U <1.0 U <1.0 U <1.0 U <1.0 U <1.0 U <1.0 U <1.0 U <1.0 U <1.0 U <1.0 U <1.0 U <1.0 U <1.0 U <1.0 U <1.0 U <1.0 U <1.0 U <1.0 U <1.0 U <1.0 U <1.0 U <1.0 U <1.0 U <1.0 U <1.0 U <1.0 U <1.0 U <1.0 U <1.0 U <1.0 U <1.0 U <1.0 U <1.0 U <1.0 U <1.0 U <1.0 U <1.0 U <1.0 U <1.0 U <1.0 U <1.0 U <1.0 U <1.0 U <1.0 U <1.0 U <1.0 U <1.0 U

0.34 J <1.0 U 0.61 J 5.2 <1.0 U 1 0.48 J 0.32 J 3.4

<1.0 U <1.0 U <1.0 U <1.0 U <1.0 U <1.0 U <1.0 U <1.0 U <1.0 U <1.0 U <1.0 U <1.0 U <1.0 U <1.0 U <1.0 U <1.0 U <1.0 U <1.0 U <1.0 U <1.0 U <1.0 U <1.0 U <1.0 U <1.0 U <1.0 U <1.0 U <1.0 U

0.58 J <1.0 U 1.2 5.6 <1.0 U 1.6 1.1 0.75 J 1.4

<2.0 U <2.0 U <2.0 U <2.0 U <2.0 U 0.72 J <2.0 U <2.0 U <2.0 U <1.5 U <1.5 U <1.5 U <1.5 U <1.5 U <1.5 U <1.5 U <1.5 U <1.5 U

9.9 4.7 7 9.1 4.8 43 9.6 9.6 10

6.6 0.78 J 0.59 J 0.86 J 1.4 B 9.7 0.48 J 0.48 J 0.92 J

0.77 J 0.67 J 0.55 J 0.41 J 0.41 J 0.59 B 0.42 J 0.56 J 0.39 J

Table 3: OU 8 Historical Contaminant Concentrations

Location Date Sample

Type

PCE TCE DCE VC

3/17/2010 N <0.25 <0.25 <0.25 <0.25

FD <0.25 <0.25 <0.25 <0.25

6/23/2010 N 0.737 2.69 <0.25 <0.25 9/17/2010 N 0.811 2.64 <0.45 <0.2 12/8/2010 N 0.204 0.706 <0.45 <0.2

FD 0.245 0.63 <0.45 <0.2

3/18/2011 N <0.25 <0.25 <0.25 <0.25 5/4/2011 N <0.141 <0.094 <0.104 <0.104

3/14/2012 N 0.809 <0.094 <0.104 <0.104 9/7/2012 N <0.126 0.601 <0.134 <0.137 4/9/2013 N <0.193 <0.161 <0.103 <0.127

10/4/2013 N 2.15 4.37 <0.103 <0.127 4/2/2014 N <0.193 <0.161 <0.103 <0.127

7/28/2014 N 0.446 1.12 <0.103 <0.127 10/10/2014 N 1.25 2.82 <0.103 <0.127

1/7/2015 N <0.178 <0.25 <0.087 <0.084 4/8/2015 N <0.2 0.285 <0.15 <0.1

FD <0.2 0.389 <0.15 <0.1

7/2/2015 N 0.279 0.957 <0.15 <0.1

10/22/2015 N <0.2 0.22 <0.15 <0.1 1/27/2016 N 0.33 0.99 <0.15 <0.1 7/13/2016 N <0.2 <0.16 <0.15 <0.1 6/22/2010 N <0.25 <0.25 <0.25 <0.25

FD <0.25 <0.25 <0.25 <0.25

9/17/2010 N 0.178 <0.5 <0.45 <0.2 12/8/2010 N <0.17 <0.5 <0.45 <0.2 3/17/2011 N <0.25 0.407 <0.25 <0.25 5/5/2011 N 0.331 <0.094 <0.104 <0.104

8/30/2011 N <0.25 0.509 <0.25 <0.25

FD <0.25 0.51 <0.25 <0.25

3/14/2012 N <0.141 <0.094 <0.104 <0.104 9/7/2012 N <0.126 <0.151 <0.134 <0.137

FD <0.126 <0.151 <0.134 <0.137

4/4/2013 N <0.193 0.57 <0.103 <0.127

FD <0.193 0.547 <0.103 <0.127

10/3/2013 N 0.839 1.24 <0.103 <0.127 4/1/2014 N <0.193 <0.161 <0.103 <0.127

10/10/2014 N 1.75 2.87 <0.103 <0.127 4/8/2015 N 2.21 2.53 <0.15 <0.1

10/22/2015 N 3.9 4.4 <0.15 <0.1 7/13/2016 N 1.2 1.4 <0.15 <0.1

MWANP-16

MWANP-19

Sample

Type

PCE TCE DCE VC

3/17/2010 N <0.25 0.284 <0.25 <0.25 6/22/2010 N <0.25 0.498 <0.25 <0.25

FD <0.25 0.508 <0.25 <0.25

9/17/2010 N 0.609 1.28 <0.45 <0.2 12/8/2010 N 0.642 1.47 <0.45 <0.2 3/17/2011 N 0.55 1.31 <0.25 <0.25 5/4/2011 N 0.388 0.68 <0.104 <0.104

8/30/2011 N 0.729 1.75 <0.25 <0.25 3/14/2012 N 0.82 1.36 <0.104 <0.104 9/7/2012 N 1.56 2.75 <0.134 <0.137 4/4/2013 N <0.193 1.26 <0.103 <0.127

10/3/2013 N 8.03 8.92 <0.103 <0.127 4/1/2014 N 3.37 3.7 <0.103 <0.127

10/10/2014 N 20.2 21.3 <0.103 <0.127 4/8/2015 N 8.98 15.7 <0.15 <0.1

10/22/2015 N 14 27 1.1 <0.1 7/13/2016 N 3.1 6.6 0.98 <0.1 12/8/2010 N 1.08 3.64 <0.45 <0.2 3/17/2011 N 0.696 2.02 <0.25 <0.25 5/4/2011 N 0.672 1.25 <0.104 <0.104

8/31/2011 N 2.16 6.33 <0.25 <0.25 9/6/2012 N 4.36 9.92 <0.134 <0.137

FD 4.17 9.43 <0.134 <0.137

4/3/2013 N 2.01 4.57 <0.103 <0.127

10/2/2013 N 5.22 10.8 <0.103 <0.127 3/28/2014 N 5.11 11.6 <0.103 <0.127 8/1/2014 N 8.29 15.3 0.289 <0.127

10/11/2014 N 9.41 19.7 <0.103 <0.127 1/6/2015 N 11.5 20.6 0.356 <0.084 4/8/2015 N 2.51 4.46 <0.15 <0.1 7/1/2015 N 3.91 8.85 <0.15 <0.1

10/21/2015 N 9.2 23 0.39 <0.1 1/27/2016 N 4 7.7 <0.15 <0.1 7/12/2016 N 12 26 0.54 <0.1 5/9/2011 N <0.141 <0.094 <0.104 <0.104

8/30/2011 N 0.571 1.58 <0.25 <0.25 3/14/2012 N 0.824 1.47 <0.104 <0.104 9/7/2012 N 1.39 2.8 <0.134 <0.137 4/4/2013 N 1.92 2.2 <0.103 <0.127

10/1/2013 N 2.43 3.37 <0.103 <0.127 4/1/2014 N 3.27 4.92 <0.103 <0.127

7/28/2014 N 3.5 5.78 <0.103 <0.127

FD 3.9 5.97 <0.103 <0.127

10/10/2014 N 6.46 10.8 <0.103 <0.127 1/8/2015 N 4.89 11.5 <0.087 <0.084 4/8/2015 N 4.33 10 <0.15 <0.1 7/2/2015 N 3.53 9.78 0.294 <0.1

10/22/2015 N 4.1 13 1.2 <0.1 1/27/2016 N 4.5 14 1.7 <0.1 7/13/2016 N 3.4 9.9 1.4 <0.1

FD 3.4 9.8 1.4 <0.1

OU8-MW-94

OU8-MW-91

MWANP-20

Sample

Type

PCE TCE DCE VC

5/9/2011 N 0.962 3.05 <0.104 <0.104 8/30/2011 N 1.13 2.95 <0.25 <0.25 3/14/2012 N 1.38 3.15 <0.104 <0.104 9/7/2012 N 1.42 2.69 <0.134 <0.137 4/4/2013 N 3.24 5.79 <0.103 <0.127

10/1/2013 N 1.21 2.52 <0.103 <0.127 4/1/2014 N 3.15 7.3 <0.103 <0.127

7/28/2014 N 1.14 2.79 <0.103 <0.127 10/10/2014 N <0.193 1.4 <0.103 <0.127

1/7/2015 N 0.377 1.07 <0.087 <0.084 4/8/2015 N 1 3.02 <0.15 <0.1 7/2/2015 N 1.49 5.09 0.16 <0.1

10/22/2015 N 0.62 1.9 <0.15 <0.1 1/27/2016 N 0.91 2.8 <0.15 <0.1 7/13/2016 N 1.4 5.2 0.99 <0.1 5/9/2011 N <0.141 <0.094 <0.104 <0.104

8/30/2011 N 0.481 1.94 <0.25 <0.25 3/15/2012 N 0.585 1.62 <0.104 <0.104 9/7/2012 N 1.14 3.62 <0.134 <0.137 4/3/2013 N 0.947 2.1 <0.103 <0.127

10/1/2013 N 2.17 5.4 <0.103 <0.127

FD 2.18 5.2 <0.103 <0.127

4/2/2014 N 2.53 6.43 <0.103 <0.127 7/30/2014 N 3.5 7.32 <0.103 <0.127 10/10/2014 N 3.51 5.82 <0.103 <0.127

1/7/2015 N 4.13 7.12 <0.087 <0.084 4/8/2015 N 1.8 4.1 <0.15 <0.1 7/1/2015 N 3.35 7.73 <0.15 <0.1

10/22/2015 N 4.1 8.6 <0.15 <0.1 1/28/2016 N 1.8 3.6 <0.15 <0.1 7/12/2016 N 1.9 3 <0.15 <0.1 5/9/2011 N 0.771 2.57 <0.104 <0.104

8/31/2011 N 0.691 2.21 <0.25 <0.25 3/14/2012 N 2.25 4.41 <0.104 <0.104 9/6/2012 N 1.36 3.37 <0.134 <0.137 4/4/2013 N 2.41 5.63 <0.103 <0.127

10/1/2013 N 2.73 6.27 <0.103 <0.127 4/2/2014 N 1.2 3.3 <0.103 <0.127

7/30/2014 N 1.32 2.5 <0.103 <0.127 10/11/2014 N 1.61 2.66 <0.103 <0.127

1/6/2015 N 1.78 2.49 <0.087 <0.084 4/8/2015 N 4.7 7.87 <0.15 <0.1 7/1/2015 N 3.03 5.79 <0.15 <0.1

10/21/2015 N 2.3 3.7 <0.15 <0.1 1/28/2016 N 2.7 3.4 <0.15 <0.1 7/12/2016 N 0.92 1.2 <0.15 <0.1

OU8-MW-97

OU8-MW-96

OU8-MW-95

Sample

Type

PCE TCE DCE VC

5/12/2011 N 0.66 2.14 <0.104 <0.104 8/31/2011 N 0.878 2.79 <0.25 <0.25 3/15/2012 N 1.17 3.32 <0.104 <0.104 9/6/2012 N 1.64 4.45 <0.134 <0.137 4/3/2013 N 1.36 2.98 <0.103 <0.127

10/1/2013 N 2.49 4.81 <0.103 <0.127 4/2/2014 N 2.52 5.08 <0.103 <0.127

7/30/2014 N 3.26 5.55 <0.103 <0.127 10/11/2014 N 3.53 4.78 <0.103 <0.127

1/7/2015 N 4.67 5.54 <0.087 <0.084

FD 4.84 5.64 <0.087 <0.084

4/8/2015 N 3.77 7.03 <0.15 <0.1 7/1/2015 N 2.88 5.22 <0.15 <0.1

10/21/2015 N 3 4.5 <0.15 <0.1 1/28/2016 N 4.2 6.7 0.15 <0.1 7/14/2016 N 2.1 2.8 <0.15 <0.1 5/9/2011 N 23.9 55.9 <0.104 <0.104

8/31/2011 N 28.3 51.5 0.616 <0.25

FD 27.5 52.2 0.541 <0.25

3/14/2012 N 17.3 41.3 0.355 <0.104

FD 19.4 46.2 0.535 <0.104

9/6/2012 N 23.6 41.4 0.449 <0.137 4/3/2013 N 29.9 67 0.886 <0.127

10/2/2013 N 22.9 37.2 <0.103 <0.127 3/28/2014 N 18.4 36.2 <0.103 <0.127 8/1/2014 N 10.5 15.4 <0.103 <0.127

10/7/2014 N 10.7 15.2 <0.103 <0.127 1/6/2015 N 8.07 10.8 0.166 <0.084 4/8/2015 N 16.6 30.9 0.338 <0.1 7/1/2015 N 6.21 12.5 <0.15 <0.1

10/22/2015 N 4.8 8.3 <0.15 <0.1 1/27/2016 N 2.9 5.2 <0.15 <0.1 5/9/2011 N <0.141 <0.094 <0.104 <0.104

8/30/2011 N 0.463 1.32 <0.25 <0.25 3/16/2012 N <0.141 <0.094 <0.104 <0.104 9/7/2012 N 0.92 1.64 <0.134 <0.137 4/4/2013 N 1.07 1.42 <0.103 <0.127

10/8/2013 N 1.45 1.87 <0.103 <0.127 4/1/2014 N 3.32 5.81 <0.103 <0.127

7/28/2014 N 3.25 5.86 <0.103 <0.127 10/10/2014 N 2.21 4.77 <0.103 <0.127

1/8/2015 N 2.91 7.35 <0.087 <0.084 4/8/2015 N 2.96 9.09 <0.15 <0.1 7/2/2015 N 6.55 21.5 0.413 <0.1

10/22/2015 N 2.2 7.8 0.68 <0.1 1/27/2016 N 0.98 2.6 0.34 <0.1

FD 1 2.8 0.36 <0.1

7/13/2016 N 1.5 5.3 0.89 <0.1

OU8-MW-100

OU8-MW-99

OU8-MW-98

Sample

Type

PCE TCE DCE VC

5/12/2011 N 0.534 1.59 <0.104 <0.104 9/7/2011 N 0.629 2.2 <0.25 <0.25

3/15/2012 N 0.803 1.91 <0.104 <0.104 9/6/2012 N 2.71 6.89 <0.134 <0.137

12/7/2012 N 3.64 9.49 <0.103 <0.127 4/4/2013 N 1.98 4.48 <0.103 <0.127

10/1/2013 N 3.38 7.61 <0.103 <0.127 3/28/2014 N 2.76 6.6 <0.103 <0.127 7/31/2014 N 4.41 10.1 <0.103 <0.127 10/7/2014 N 5.47 9.57 <0.103 <0.127 1/6/2015 N 4.99 10.1 <0.087 <0.084 4/7/2015 N 1.91 4.79 <0.15 <0.1 7/2/2015 N 2.79 5.88 <0.15 <0.1

10/21/2015 N 2.7 5.9 <0.15 <0.1

FD 2.7 5.9 <0.15 <0.1

1/27/2016 N 1.7 3.3 <0.15 <0.1

FD 1.8 3.5 <0.15 <0.1

7/13/2016 N 2.7 5.5 <0.15 <0.1 5/13/2011 N 67.6 22 23.6 <0.104 8/29/2011 N 94 32.3 38.7 <0.25 3/14/2012 N 132 36.3 44.8 <0.104 9/6/2012 N 116 36.5 40.9 <0.137 4/3/2013 N 139 35.5 36.8 <0.127

10/2/2013 N 65.4 23.5 27.9 <0.127 3/28/2014 N 97.7 40.4 183 0.906 7/30/2014 N 74.2 31.1 44.1 <0.127 10/8/2014 N 52.9 19 50 <0.127

FD 52.8 19.3 49.3 <0.127

1/5/2015 N 16.5 5.86 121 0.304

FD 16.9 5.88 116 0.3

4/7/2015 N 16.8 5.99 133 0.407 7/1/2015 N 10.3 6.56 126 0.519

FD 10.9 6.77 128 0.476

10/21/2015 N 20 11 52 0.2 1/27/2016 N 3.1 1.9 130 0.71 9/30/2011 N 4.72 12.9 <0.25 <0.25 3/15/2012 N 3.23 7.55 <0.104 <0.104 9/6/2012 N 4.44 9.56 <0.134 <0.137 4/4/2013 N 6.02 13.2 <0.103 <0.127

10/1/2013 N 6.38 12.9 <0.103 <0.127 3/28/2014 N 7.09 18.1 <0.103 <0.127 8/1/2014 N 4.3 8.55 <0.103 <0.127

10/7/2014 N 4.2 6.91 <0.103 <0.127 1/6/2015 N 5.2 8.53 <0.087 <0.084 4/7/2015 N 4.11 9.3 <0.15 <0.1 7/2/2015 N 3.4 7.23 <0.15 <0.1

10/21/2015 N 3.9 8.6 <0.15 <0.1 1/27/2016 N 3.4 8.3 <0.15 <0.1 7/13/2016 N 2.8 5.5 <0.15 <0.1

OU8-MW-125

OU8-MW-114

OU8-MW-112

Sample

Type

PCE TCE DCE VC

9/30/2011 N 33.8 30.7 5.65 <0.25 3/15/2012 N 25.2 26.5 2.32 <0.104 9/6/2012 N 25.3 24.9 1.82 <0.137 4/4/2013 N 28 24.4 2.86 <0.127

10/1/2013 N 30.6 22.3 2.34 <0.127 3/28/2014 N 22 25 1.64 <0.127 7/31/2014 N 28.6 20.3 4.72 <0.127 10/7/2014 N 42.8 20.1 7.61 <0.127 1/6/2015 N 37.9 15 27.1 <0.084 4/7/2015 N 28.9 17.3 14.6 <0.1 7/2/2015 N 25.2 13.6 22.1 <0.1

10/21/2015 N 27 11 22 <0.1 1/27/2016 N 33 13 10 <0.1 7/13/2016 N 25 10 7.5 <0.1 9/30/2011 N 43.9 26.5 11.4 <0.25

FD 42 25.8 10.8 <0.25

3/14/2012 N 37.1 20.8 8.49 <0.104 9/6/2012 N 49.9 23.4 8.43 <0.137

FD 49.8 23.1 8.35 <0.137

4/3/2013 N 67.6 23.3 13.9 <0.127

10/1/2013 N 73.9 25.1 13.1 <0.127 3/28/2014 N 64.9 27 13 <0.127 7/23/2014 N 33.2 11.7 5.25 <0.127 7/31/2014 N 24.7 7.25 3.79 <0.127 8/21/2014 N 18 6.58 4.2 <0.127 9/24/2014 N 34.3 11.4 9.51 <0.127 10/7/2014 N 46.9 15.4 13.2 <0.127 1/6/2015 N 57.6 20.1 42.2 <0.084

FD 55.1 20.9 40 <0.084

4/7/2015 N 46.9 18.6 58 0.222 7/2/2015 N 29.4 12.1 70.1 <0.1

10/21/2015 N 25 9.9 73 0.31 1/27/2016 N 35 13 59 <0.1 7/12/2016 N 35 12 45 0.12

FD 34 11 44 <0.1

OU8-MW-127

OU8-MW-126

Sample

Type

PCE TCE DCE VC

9/30/2011 N 15.4 11.2 4.6 <0.25 3/14/2012 N 16.9 11.9 7.29 <0.104 9/6/2012 N 27 13.7 9.62 <0.137 4/3/2013 N 27.4 11.3 8.3 <0.127

FD 27.7 11.4 8.43 <0.127

10/1/2013 N 39.7 15.1 11.2 <0.127 3/28/2014 N 41.2 17.5 13 <0.127

FD 42.2 17.7 13.3 <0.127

7/31/2014 N 51 18.5 15.3 <0.127 10/7/2014 N 60.5 17.8 15.2 <0.127 10/8/2014 N 63.1 19.2 16.7 <0.127 10/9/2014 N 59.5 18.7 15.8 <0.127 1/6/2015 N 51.2 14.4 14.2 <0.084 4/7/2015 N 30.8 10.1 8.76 <0.1 7/2/2015 N 31.1 9.34 9.13 <0.1

FD 27.6 8.53 8.68 <0.1

10/21/2015 N 42 13 13 <0.1 1/27/2016 N 16 4.4 7.8 <0.1

FD 17 4.7 8.2 <0.1

7/11/2016 N 15 5.2 36 <0.1 12/7/2012 N <0.193 1.46 <0.103 <0.127 4/3/2013 N <0.193 <0.161 <0.103 <0.127

10/8/2013 N <0.193 2 <0.103 <0.127

FD <0.193 1.75 <0.103 <0.127

3/28/2014 N 0.505 1.44 <0.103 <0.127 7/29/2014 N 1.23 2.62 <0.103 <0.127 10/9/2014 N 1.64 3.01 <0.103 <0.127

FD 1.34 3.07 <0.103 <0.127

1/7/2015 N 0.842 1.75 <0.087 <0.084 4/9/2015 N <0.2 0.42 <0.15 <0.1

FD <0.2 0.318 <0.15 <0.1

7/1/2015 N 0.603 1.32 <0.15 <0.1

10/22/2015 N 1.1 2.3 <0.15 <0.1

FD 1.3 2.7 <0.15 <0.1

1/27/2016 N 0.42 0.94 <0.15 <0.1 7/12/2016 N 1.7 2.9 <0.15 <0.1

FD 1.8 3 <0.15 <0.1

12/6/2012 N <0.193 <0.161 <0.103 <0.127 4/3/2013 N <0.193 <0.161 <0.103 <0.127

10/8/2013 N <0.193 0.435 <0.103 <0.127 3/28/2014 N <0.193 0.321 <0.103 <0.127 7/30/2014 N 0.64 1.16 <0.103 <0.127 10/9/2014 N 0.631 1.27 <0.103 <0.127 1/7/2015 N 0.413 0.922 <0.087 <0.084 4/9/2015 N <0.2 0.405 <0.15 <0.1 7/1/2015 N <0.2 0.368 <0.15 <0.1

FD <0.2 0.341 <0.15 <0.1

10/22/2015 N 0.36 0.93 <0.15 <0.1 1/27/2016 N 0.21 0.5 <0.15 <0.1 7/12/2016 N 0.31 0.58 <0.15 <0.1

OU8-MW-131

OU8-MW-130

OU8-MW-128

Sample

Type

PCE TCE DCE VC

12/6/2012 N <0.193 <0.161 <0.103 <0.127 4/3/2013 N <0.193 <0.161 <0.103 <0.127

10/8/2013 N <0.193 0.419 <0.103 <0.127 3/28/2014 N <0.193 <0.161 <0.103 <0.127 7/29/2014 N 0.358 0.729 <0.103 <0.127 10/9/2014 N 0.611 1.17 <0.103 <0.127 1/7/2015 N 0.352 0.852 <0.087 <0.084 4/9/2015 N <0.2 0.273 <0.15 <0.1 7/1/2015 N <0.2 0.32 <0.15 <0.1

10/22/2015 N 0.35 0.78 <0.15 <0.1 1/27/2016 N 0.23 0.48 <0.15 <0.1 7/12/2016 N 0.25 0.45 <0.15 <0.1 12/6/2012 N <0.193 <0.161 <0.103 <0.127 4/3/2013 N <0.193 <0.161 <0.103 <0.127

10/8/2013 N <0.193 0.346 <0.103 <0.127 3/28/2014 N <0.193 <0.161 <0.103 <0.127 7/29/2014 N <0.193 <0.161 <0.103 <0.127 10/9/2014 N 0.508 0.999 <0.103 <0.127 1/7/2015 N 0.411 1.09 <0.087 <0.084 4/9/2015 N <0.2 0.481 <0.15 <0.1 7/1/2015 N <0.2 0.329 <0.15 <0.1

10/22/2015 N 0.31 0.76 <0.15 <0.1 1/27/2016 N 0.39 0.8 <0.15 <0.1 7/12/2016 N 0.23 0.42 <0.15 <0.1 12/6/2012 N 0.603 1.1 <0.103 <0.127

FD 0.578 1.21 <0.103 <0.127

4/3/2013 N <0.193 <0.161 <0.103 <0.127

10/8/2013 N <0.193 0.561 <0.103 <0.127 3/28/2014 N <0.193 0.852 <0.103 <0.127 7/29/2014 N 0.505 1.04 <0.103 <0.127

FD 0.552 1.13 <0.103 <0.127

10/9/2014 N 0.94 1.94 <0.103 <0.127 1/7/2015 N 1.27 2.68 <0.087 <0.084 4/9/2015 N 0.698 1.68 <0.15 <0.1 7/1/2015 N 0.463 1.17 <0.15 <0.1

10/22/2015 N 0.75 1.6 <0.15 <0.1 1/27/2016 N 0.83 1.7 <0.15 <0.1 7/12/2016 N 0.34 0.58 <0.15 <0.1 5/22/2013 N 12.4 7.01 4.28 <0.127 10/1/2013 N 3.75 2.26 1.11 <0.127 3/28/2014 N 4.93 3.27 1.52 <0.127

FD 4.39 3.46 1.52 <0.127

7/30/2014 N 3.31 2.36 0.955 <0.127 10/7/2014 N 2.58 1.32 0.416 <0.127 1/5/2015 N 5.38 1.87 0.738 <0.084 4/7/2015 N 5.12 2.56 1.51 <0.1 7/2/2015 N 6.37 3.64 2.37 <0.1

10/21/2015 N 3.6 2.5 1.2 <0.1 1/27/2016 N 4.8 2.8 1.7 <0.1

OU8-MW-145

OU8-MW-134

OU8-MW-133

OU8-MW-132

Sample

Type

PCE TCE DCE VC

5/22/2013 N <0.193 <0.161 <0.103 <0.127 10/3/2013 N 0.37 <0.161 <0.103 <0.127 4/1/2014 N <0.193 <0.161 <0.103 <0.127

10/10/2014 N 0.538 0.99 <0.103 <0.127 4/8/2015 N <0.2 <0.16 <0.15 <0.1

10/22/2015 N 0.7 1.4 <0.15 <0.1 7/11/2016 N <0.2 <0.16 <0.15 <0.1 5/22/2013 N 2.15 2.91 <0.103 <0.127 10/3/2013 N 0.866 0.868 <0.103 <0.127 4/1/2014 N 0.358 1.13 <0.103 <0.127

FD 0.51 1.05 <0.103 <0.127

10/10/2014 N 1.09 1.43 <0.103 <0.127

FD 0.741 1.33 <0.103 <0.127

4/8/2015 N 0.881 1.48 <0.15 <0.1

FD 0.79 1.47 <0.15 <0.1

10/22/2015 N 0.68 1.3 <0.15 <0.1

FD 0.7 1.3 <0.15 <0.1

7/11/2016 N 0.61 1.2 <0.15 <0.1 6/10/2014 N 8.59 9.52 1.17 <0.127 7/31/2014 N 8.65 9.42 1.31 <0.127 10/7/2014 N 11.8 10.5 1.56 <0.127 10/8/2014 N 12.6 10.9 1.67 <0.127 10/9/2014 N 12.1 10.2 1.69 <0.127 1/5/2015 N 13.7 8.78 2.24 <0.084 4/7/2015 N 12.5 9.12 2.19 <0.1

FD 13.3 8.58 2.05 <0.1

7/1/2015 N 7.72 6.47 1.68 <0.1

10/21/2015 N 7.4 6.6 2.2 <0.1 1/28/2016 N 8.9 6.5 2.9 <0.1 7/11/2016 N 5.2 5.6 1.6 <0.1 6/10/2014 N 13.8 2.02 <0.103 <0.127 7/30/2014 N 18 2.67 <0.103 <0.127 10/7/2014 N 14.9 1.89 <0.103 <0.127 1/5/2015 N 6.78 0.892 <0.087 <0.084 4/7/2015 N 4.12 0.556 <0.15 <0.1 7/2/2015 N 11 1.57 <0.15 <0.1

10/21/2015 N 7.7 1 <0.15 <0.1 1/27/2016 N 0.27 <0.16 <0.15 <0.1 7/12/2016 N <0.2 <0.16 <0.15 <0.1 6/10/2014 N <0.193 <0.161 <0.103 <0.127 7/30/2014 N <0.193 <0.161 <0.103 <0.127

FD <0.193 <0.161 <0.103 <0.127

10/7/2014 N <0.193 <0.161 <0.103 <0.127 1/5/2015 N <0.178 <0.25 <0.087 <0.084 4/8/2015 N <0.2 <0.16 <0.15 <0.1 7/1/2015 N <0.2 <0.16 <0.15 <0.1

10/21/2015 N <0.2 <0.16 <0.15 <0.1

FD <0.2 <0.16 <0.15 <0.1

1/27/2016 N <0.2 <0.16 <0.15 <0.1

OU8-MW-157

OU8-MW-156

OU8-MW-148

OU8-MW-147

OU8-MW-146

Sample

Type

PCE TCE DCE VC

6/10/2014 N 1.4 1.75 <0.103 <0.127 7/28/2014 N 1.66 2.23 <0.103 <0.127 10/10/2014 N 1.15 1.42 <0.103 <0.127

1/6/2015 N 0.933 1.14 <0.087 <0.084 4/9/2015 N 0.645 1.07 <0.15 <0.1

FD 0.621 0.989 <0.15 <0.1

7/1/2015 N 0.685 1.16 <0.15 <0.1

10/26/2015 N 0.84 1.3 <0.15 <0.1 1/27/2016 N 0.54 0.94 <0.15 <0.1 7/13/2016 N 1 1.6 <0.15 <0.1 3/18/2015 N 1.27 3.27 <0.15 <0.1

FD 1.22 2.97 <0.15 <0.1

4/9/2015 N 1.18 2.55 <0.15 <0.1

10/21/2015 N 0.7 1.7 <0.15 <0.1 1/28/2016 N 0.9 2 <0.15 <0.1 7/11/2016 N 0.48 1.1 <0.15 <0.1 3/18/2015 N 0.218 0.522 <0.15 <0.1 4/9/2015 N 0.262 0.587 <0.15 <0.1

10/21/2015 N 0.32 0.84 <0.15 <0.1 1/27/2016 N 0.49 1.1 <0.15 <0.1 7/11/2016 N 0.32 0.75 <0.15 <0.1 3/18/2015 N 0.546 <0.16 <0.15 <0.1 4/9/2015 N 0.988 0.247 <0.15 <0.1

10/21/2015 N 3.7 1.2 0.91 <0.1 1/27/2016 N 0.45 <0.16 <0.15 <0.1 7/11/2016 N 3.4 1.4 2.1 <0.1

OU8-MW-161

OU8-MW-160

OU8-MW-159

OU8-MW-158

Attachment A: Field Forms

Attachment B: Laboratory Analytical Reports

To be found on CD at end of report.

Attachment C: OU 8 Concentration Trends

MWANP-16

Northern Plume

OU8 - UPPR WBU

0.5

1.5

2.5

3.5

4.5 ug /L tetrachloroethene (PCE) trichloroethene (TCE) cis‐1,2‐dichloroethene vinyl chloride ethene

MWANP-19

Injection Area 4

OU8 - UPPR WBU

0.5

1.5

2.5

3.5

4.5 ug /L tetrachloroethene (PCE) trichloroethene (TCE) cis‐1,2‐dichloroethene

MWANP-20

Injection Area 4

OU8 - UPPR WBU

ug /L tetrachloroethene (PCE) trichloroethene (TCE) cis‐1,2‐dichloroethene

OU8-MW-91

OU8 - UPPR WBU

ug /L tetrachloroethene (PCE) trichloroethene (TCE) cis‐1,2‐dichloroethene

OU8-MW-94

OU8 - UPPR WBU

ug /L tetrachloroethene (PCE) trichloroethene (TCE) cis‐1,2‐dichloroethene

OU8-MW-95

OU8 - UPPR WBU

ug /L tetrachloroethene (PCE) trichloroethene (TCE) cis‐1,2‐dichloroethene

OU8-MW-96

OU8 - UPPR WBU

ug /L tetrachloroethene (PCE) trichloroethene (TCE) cis‐1,2‐dichloroethene

OU8-MW-97

OU8 - UPPR WBU

ug /L tetrachloroethene (PCE) trichloroethene (TCE) cis‐1,2‐dichloroethene

OU8-MW-98

OU8 - UPPR WBU

ug /L tetrachloroethene (PCE) trichloroethene…