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LTLW 2018 1 23 Phase1_SummaryTable_Plates
DRAFT Preliminary ‐ Subject to Revision PES Environmental, Inc. Table 1 Summary of Grab Groundwater Analytical Results Lake Tahoe Laundry Works 1024 Lake Tahoe Boulevard, South Lake Tahoe, California Location ID Sample ID Sample Interval (ft-bgs) Sample Date PCE TCE cis-1,2- DCE CHCl3 LTLWGW1-14 10-14 1/9/18 123 ND(1.00) ND(1.00) ND(1.00) LTLWGW1-26 22-26 1/9/18 7.78 ND(0.500) ND(0.500) ND(0.500) LTLW-GW-1 LTLWGW1-45 41-45 1/9/18 5.15 ND(0.500) ND(0.500) ND(0.500) LTLWGW1-63 59-63 1/9/18 4.27 ND(0.500) ND(0.500) ND(0.500) LTLWGW1-75 71-75 1/9/18 ND(0.500) ND(0.500) ND(0.500) ND(0.500) LTLWGW2-11 7-11 1/4/18 ND(0.500) ND(0.500) ND(0.500) ND(0.500) LTLWGW2-18 14-18 1/4/18 ND(0.500) ND(0.500) ND(0.500) ND(0.500) LTLW-GW-2 LTLWGW2-33 29-33 1/4/18 ND(0.500) ND(0.500) ND(0.500) ND(0.500) LTLWGW2-50 46-50 1/4/18 1.41 ND(0.500) ND(0.500) ND(0.500) LTLWGW2-76 72-76 1/4/18 ND(0.500) ND(0.500) ND(0.500) ND(0.500) LTLWGW3-14 10-14 1/9/18 ND(0.500) ND(0.500) ND(0.500) ND(0.500) LTLWGW3-26 22-26 1/9/18 ND(0.500) ND(0.500) ND(0.500) ND(0.500) LTLW-GW-3 LTLWGW3-45 41-45 1/9/18 31.7 0.660 ND(0.500) ND(0.500) LTLWGW3-63 59-63 1/10/18 ND(0.500) ND(0.500) ND(0.500) ND(0.500) LTLWGW3-75 71-75 1/10/18 ND(0.500) ND(0.500) ND(0.500) ND(0.500) LTLWGW4-14 10-14 1/10/18 3.15 ND(0.500) ND(0.500) ND(0.500) LTLWGW4-26 22-26 1/10/18 ND(0.500) ND(0.500) ND(0.500) ND(0.500) LTLW-GW-4 LTLWGW4-26-DUP 22-26 1/10/18 ND(0.500) ND(0.500) ND(0.500) ND(0.500) LTLWGW4-45 41-45 1/10/18 16.3 ND(0.500) ND(0.500) ND(0.500) LTLWGW4-63 59-63 1/10/18 0.620 ND(0.500) ND(0.500) ND(0.500) LTLWGW4-75 71-75 1/10/18 ND(0.500) ND(0.500) ND(0.500) ND(0.500) LTLWGW5-14 10-14 1/8/18 5.68 ND(0.500) ND(0.500) ND(0.500) LTLWGW5-14-DUP 10-14 1/8/18 6.67 ND(0.500) ND(0.500) ND(0.500) LTLW-GW-5 LTLWGW5-26 22-26 1/8/18 7.27 ND(0.500) ND(0.500) ND(0.500) LTLWGW5-42 38-42 1/8/18 15.7 ND(0.500) ND(0.500) ND(0.500) LTLWGW5-60 56-60 1/8/18 ND(0.500) ND(0.500) ND(0.500) ND(0.500) LTLWGW5-73 69-73 1/8/18 ND(0.500) ND(0.500) ND(0.500) ND(0.500) LTLWGW6-14 10-14 1/8/18 6.38 0.700 0.640 ND(0.500) LTLWGW6-26 22-26 1/8/18 0.620 ND(0.500) ND(0.500)0.790 LTLW-GW-6 LTLWGW6-42 38-42 1/8/18 0.560 ND(0.500) ND(0.500) ND(0.500) LTLWGW6-60 56-60 1/8/18 0.550 ND(0.500) ND(0.500) ND(0.500) LTLWGW6-73 69-73 1/8/18 ND(0.500) ND(0.500) ND(0.500) ND(0.500) LTLWGW7-14 10-14 1/5/18 1.27 ND(0.500) ND(0.500) ND(0.500) LTLWGW7-26 22-26 1/5/18 3.61 ND(0.500) ND(0.500) ND(0.500) LTLW-GW-7 LTLWGW7-26-DUP 22-26 1/5/18 3.48 ND(0.500) ND(0.500) ND(0.500) LTLWGW7-42 38-42 1/5/18 28.6 0.530 ND(0.500)1.36 LTLWGW7-60 56-60 1/5/18 ND(0.500) ND(0.500) ND(0.500) ND(0.500) LTLWGW7-73 69-73 1/5/18 ND(0.500) ND(0.500) ND(0.500) ND(0.500) PrelimData.xlsx ‐ Table 1 1/23/2018 DRAFT Preliminary ‐ Subject to Revision PES Environmental, Inc. Table 1 Summary of Grab Groundwater Analytical Results Lake Tahoe Laundry Works 1024 Lake Tahoe Boulevard, South Lake Tahoe, California Location ID Sample ID Sample Interval (ft-bgs) Sample Date PCE TCE cis-1,2- DCE CHCl3 Trip Blank TB_010518 -- 1/5/18 ND(0.500) ND(0.500) ND(0.500) ND(0.500) Trip Blank TB_010818 -- 1/8/18 ND(0.500) ND(0.500) ND(0.500) ND(0.500) Trip Blank TB_011018 -- 1/10/18 ND(0.500) ND(0.500) ND(0.500) ND(0.500) Equipment Blank EB_010518 -- 1/5/18 ND(0.500) ND(0.500) ND(0.500) ND(0.500) Equipment Blank EB_011018 -- 1/10/18 ND(0.500) ND(0.500) ND(0.500) ND(0.500) Notes: All results in micrograms per liter (µg/L) ft-bgs: feet below ground surface PCE: Tetrachloroethene TCE: Trichloroethene cis-1,2-DCE: cis-1,2-Dichloroethene CHCl3: Chloroform Samples analyzed using U.S. Environmental Protection Agency Test Method 8260B. Only detected volatile organic compounds (VOCs) are tabulated. Other VOCs are below respective laboratory reporting limits. PrelimData.xlsx ‐ Table 1 1/23/2018 SS SS SS SS SS SS SS SS SS SSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSDSDSDSDSDSDSDSDSDSDSDSDSDSDSDSDSDSDSDSDSDSDSDSDSDWWWWWWWWWWWWWWWWWWWWWWWWWSDSDSDWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWGGGGGGGGWWWWWWWWWSDSDSDSDSDSDSDSDSDSDSDSDSDSDSDSSSSSSSSSSSD SD SD SD SD SD SD SD SD SD SD SD SD SD SS SS SS SS WS-11Glorene AvenueLake Tahoe Boulevard Former LTLWLTLW-GW-3LTLW-GW-2LTLW-GW-4LTLW-GW-5LTLW-GW-7LTLW-SB-1LTLW-GW-6SD SD SD SD SD SDSD SD SD SD SD SD SD SDSDSDSDSDSDSDSD SD SD SD SDLTLW-GW-1SSResults of Phase I Groundwater InvestigationData Transmittal ReportLake Tahoe Laundry WorksSouth Lake Tahoe, CaliforniaDRAWING NUMBERJOB NUMBER 1021.001.04.003PLATEDATE1REVIEWED BYDRAFT102100104003_DTR_0,2-31/18ExplanationSSSTPUD Sewer Main and ManholeMulti-Depth Grab Groundwater Sample LocationSCALE IN FEETN600Draft for Discussion Purposes OnlyWater LineWSubsurface Stormwater SystemSDApproximate Property BoundaryAerial Photo: July 13, 2016 (Google 2017)All locations are approximateGOnsite SewerNatural GasLTLW-GW-2Continuously Logged BoreholeDepths provided in feet below ground surface (ft bgs).Volatile organic compounds (VOC) concentrations reportedin micrograms per liter (µg/L), including tetrachloroethene(PCE), trichloroethene (TCE), cis-1,2-dichloroethene(cis12DCE), and chloroform (CHCl3).Notes:LTLW-SB-1LTLW-GW-1Depth10-1422-2641-4559-6371-75LTLW-GW-2Depth7-1114-1829-3346-5072-76LTLW-GW-3Depth10-1422-2641-4559-6371-75LTLW-GW-4Depth10-1422-2641-4559-6371-75LTLW-GW-5Depth10-1422-2638-4256-6069-73LTLW-GW-6Depth10-1422-2638-4256-6069-73LTLW-GW-7Depth10-1422-2638-4256-6069-73PCE1237.785.154.27ND(0.500)PCEND(0.500)ND(0.500)ND(0.500)1.41ND(0.500)PCEND(0.500)ND(0.500)31.7ND(0.500)ND(0.500)PCE3.15ND(0.500)16.30.620ND(0.500)PCE5.687.2715.7ND(0.500)ND(0.500)PCE6.380.6200.5600.550ND(0.500)PCE1.273.6128.6ND(0.500)ND(0.500)TCEND(1.00)ND(0.500)ND(0.500)ND(0.500)ND(0.500)TCEND(0.500)ND(0.500)ND(0.500)ND(0.500)ND(0.500)TCEND(0.500)ND(0.500)0.660ND(0.500)ND(0.500)TCEND(0.500)ND(0.500)ND(0.500)ND(0.500)ND(0.500)TCEND(0.500)ND(0.500)ND(0.500)ND(0.500)ND(0.500)TCE0.700ND(0.500)ND(0.500)ND(0.500)ND(0.500)TCEND(0.500)ND(0.500)0.530ND(0.500)ND(0.500)cis12DCEND(1.00)ND(0.500)ND(0.500)ND(0.500)ND(0.500)cis12DCEND(0.500)ND(0.500)ND(0.500)ND(0.500)ND(0.500)cis12DCEND(0.500)ND(0.500)ND(0.500)ND(0.500)ND(0.500)cis12DCEND(0.500)ND(0.500)ND(0.500)ND(0.500)ND(0.500)cis12DCEND(0.500)ND(0.500)ND(0.500)ND(0.500)ND(0.500)cis12DCE0.640ND(0.500)ND(0.500)ND(0.500)ND(0.500)cis12DCEND(0.500)ND(0.500)ND(0.500)ND(0.500)ND(0.500)ND(1.00)ND(0.500)ND(0.500)ND(0.500)ND(0.500)ND(0.500)ND(0.500)ND(0.500)ND(0.500)ND(0.500)ND(0.500)ND(0.500)ND(0.500)ND(0.500)ND(0.500)ND(0.500)ND(0.500)ND(0.500)ND(0.500)ND(0.500)ND(0.500)ND(0.500)ND(0.500)ND(0.500)ND(0.500)ND(0.500)0.790ND(0.500)ND(0.500)ND(0.500)ND(0.500)ND(0.500)1.36ND(0.500)ND(0.500)CHCl3CHCl3CHCl3CHCl3CHCl3CHCl3CHCl3 TUCK E R A V E. E M E R A L D B A Y R O A D5TH ST.GLORENE AVE . Fifth Street Repair Shops Former Lampson/ Sierra Dry Cleaners LTLW10TH ST.8TH ST.ROGE R A V E . JA M E S A V E .7TH ST.TATA LANE JUL IE LANE10TH ST. Rockwater Well Former Norma's Cleaners Redwood Oil TATA KM2 KM1 JA M E S A V E . E L O I S E A V E . TEN J6 ROG 5E J5 J4 J3 J2 J1 FIF DUN1 LTB1 LTB2 LTB3 LTB4 DUN2 LAK E T A H O E B L V D.DUNLAP DR.TCI/Former Honda Dealership 1963 Tucker Avenue Terry Libbon Motors South Shore Motors Shehadi Motors Napa/Former Lakeside Auto 976 Emerald Bay Rd. Former Big O Tires Runnels Automotive Former Crystal Range Motel/Carpet Cleaning Figure 2 South Y Area South Lake Tahoe, CA January 2018 EKI A70020.01 3200 640 (Scale in Feet) N EKI and PES Multi-Depth Grab Groundwater Sample Locations and PCE Results Legend: Notes: 1.All locations are approximate. 2.Bold value in data box indicates that measured PCE concentration in sample exceeds current California MCL. Abbreviations: ft bgs = feet below ground surface ug/l = micrograms per liter PCE = tetrachloroethene/perchloroethylene MCL = maximum contaminant level LTLW = Lake Tahoe Laundry Works 3.Basemap source: Google Earth Pro, date of imagery 13 July 2016. EKI Approximate Multi-Depth Grab Groundwater Sample Location (June/July 2017) Depth (ft bgs) 7-11 14-18 29-33 46-50 72-76 PCE <0.5 <0.5 <0.5 1.41 <0.5 Depth (ft bgs) 10-14 22-26 41-45 59-63 71-75 Depth (ft bgs) 10-14 22-26 41-45 59-63 71-75 PCE 3.15 <0.5 16.3 0.620 <0.5 LTLW-GW-4 PCE <0.5 <0.5 31.7 <0.5 <0.5 Depth (ft bgs) 10-14 22-26 41-45 59-63 71-75 PCE 123 7.78 5.15 4.27 <0.5 LTLW-GW-3 LTLW-GW-3 LTLW-GW-2 Depth (ft bgs) 10-14 22-26 41-45 59-63 71-75 Depth (ft bgs) 10-14 22-26 41-45 59-63 71-75 LTLW-GW-7 Depth (ft bgs) 10-14 22-26 41-45 59-63 71-75 LTLW-GW-6 LTLW-GW-5 PCE 5.68 7.27 15.7 <0.5 <0.5 PCE 1.27 3.61 28.6 <0.5 <0.5 PCE 6.38 0.620 0.560 0.550 <0.5 PES Approximate Multi-Depth Grab Groundwater Sample Location (January 2018)