Sverdrup Environmental, Inc. 913 663-2101 4400 College Boulevard FAX: 913 663-1668 Suite 160 Overland Park, Kansas 66211 40260359 ; i I Hill Illlll September 2, 1999 11 SUPERFUND RECORDS Mr. Don Bahnke Environmental Protection Agency Superfund Division 901 North 5th Street , SFP 0 1999 Kansas City, KS 66101 Re: Residential Validation Report WA No. 025-SISI-07ZY Contract No. 68-W5-0014 Mr. Bahnke: This validation package includes the XRF data for 433 residential properties where access was obtained and sampling was performed. This Data Validation Package is a supplement to the off-site laboratory confirmatory data validation provided in the June 21, 1999 Data Validation Package for the child care centers. These data were validated by developing a linear regression and relative percent differences (RPD) calculations. The linear regression was developed by comparing the XRF result with the corresponding off-site laboratory result from the same sampling location. The RPD calculations were developed by using the primary and duplicate XRF samples from the same sampling location. The site- specific QAPP requires that the coefficient of determination (R 2 ) between the XRF and off-site laboratory data are equal to or greater than 0.49 (a linear correlation coefficient of 0.70 or greater). The RPDs must be less than 67 percent to meet the requirements set forth in the site-specific QAPP. RPD tables for lead, arsenic, and zinc were developed, however, lead and zinc were the only two analytes in which the XRF results were regularly above the quantitation limits. Therefore, lead and zinc are the onl/ two analytes having RPDs calculated in abundance. In those instances when RPDs were calculated for analytes other than lead and zinc for results that were above the sample quantitation limit, the RPDs were within the site-specific QAPP RPD requirements. RPD results calculated for primary versus duplicate samples when both results were below the sample quantitation limit were not considered in the QA/QC process. Linear regressions were only developed for lead and zinc since there were not enough data above the sample quantitation limits to perform a statistically valid linear regression for other analytes. A log-log data transformation was performed prior to developing the linear regressions to help stabilize the contaminant concentration variance. Based on the data transformation results, these data appear to be log normally distributed. A majority of the higher contaminant concentration data results have a large contaminant concentration variance. These data do not appear to be outliers influencing the distribution of the data set. Instead, at higher lead concentrations in soil, the precision of the XRF results is lower causing an increase in the concentration variance between the XRF and off-site laboratory results. This is especially true for XRF results above 5532 ppm, the highest N1ST calibration standard used for S:\SVE PROJ\OOOI55\025\DATAVAL\DV083I99.WPD
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Sverdrup Environmental, Inc. 913 663-21014400 College Boulevard FAX: 913 663-1668Suite 160Overland Park, Kansas 66211
40260359
; i I Hill IlllllSeptember 2, 1999
11
SUPERFUND RECORDS
Mr. Don BahnkeEnvironmental Protection AgencySuperfund Division901 North 5th Street , SFP 0 1999Kansas City, KS 66101
This validation package includes the XRF data for 433 residential properties where access was obtainedand sampling was performed. This Data Validation Package is a supplement to the off-site laboratoryconfirmatory data validation provided in the June 21, 1999 Data Validation Package for the child carecenters. These data were validated by developing a linear regression and relative percent differences(RPD) calculations. The linear regression was developed by comparing the XRF result with thecorresponding off-site laboratory result from the same sampling location. The RPD calculations weredeveloped by using the primary and duplicate XRF samples from the same sampling location. The site-specific QAPP requires that the coefficient of determination (R2) between the XRF and off-site laboratorydata are equal to or greater than 0.49 (a linear correlation coefficient of 0.70 or greater). The RPDs mustbe less than 67 percent to meet the requirements set forth in the site-specific QAPP.
RPD tables for lead, arsenic, and zinc were developed, however, lead and zinc were the only two analytesin which the XRF results were regularly above the quantitation limits. Therefore, lead and zinc are the onl/two analytes having RPDs calculated in abundance. In those instances when RPDs were calculated foranalytes other than lead and zinc for results that were above the sample quantitation limit, the RPDs werewithin the site-specific QAPP RPD requirements. RPD results calculated for primary versus duplicatesamples when both results were below the sample quantitation limit were not considered in the QA/QC
process.
Linear regressions were only developed for lead and zinc since there were not enough data above thesample quantitation limits to perform a statistically valid linear regression for other analytes. A log-logdata transformation was performed prior to developing the linear regressions to help stabilize thecontaminant concentration variance. Based on the data transformation results, these data appear to be lognormally distributed. A majority of the higher contaminant concentration data results have a largecontaminant concentration variance. These data do not appear to be outliers influencing the distributionof the data set. Instead, at higher lead concentrations in soil, the precision of the XRF results is lowercausing an increase in the concentration variance between the XRF and off-site laboratory results. Thisis especially true for XRF results above 5532 ppm, the highest N1ST calibration standard used for
S:\SVE PROJ\OOOI55\025\DATAVAL\DV083I99.WPD
instrument calibration. Results above 5532 ppm are above the calibration curve. In addition, the largecontaminant concentration variances between the XRf and off-site laboratory results may be attributableto the soil grain-size distribution, moisture content, organic matter content, and differences in the yRF andoff-site laboratory analytical procedure methodology.
There were five RPD's for lead that did not meet the requirements set forth in the site-specific QAPP:primary XRF sample number 1284 corresponding to duplicate XRF sample number 1287 (RPD=116%);primary XRF sample number 1513 corresponding to duplicate XRF sample number 2934 (RPD= 169%);primary XRF sample number 2671 corresponding to duplicate XRF sample number 2707 (RPD=161%);primary XRF sample number 2741 corresponding to duplicate sample number 2740 (RPD=93%); andprimary XRF sample number 3839 corresponding to duplicate XRF sample number 3838 (RPD=125%).Since the above five data pairs are outside the RPD requirements, these data have been qualified as"estimated" and were "J" coded.
There were six RPD's for zinc that did not meet the requirements set forth in the site-specific QAPP:primary XRF sample number 1284 corresponding to duplicate sample number 1287 (RPD=I05%); primaryXRF sample number 2040 corresponding to duplicate sample number 2041 (RPD=68%); primary XRFsample number 2671 corresponding to duplicate sample number2707 (RPD=107%); primary XRF samplenumber 2741 corresponding to duplicate sample number 2740 (RPD=88%); primary XRF sample number3046 corresponding to duplicate sample 3047 (RPD=73%); and primary XRF sample number 3187corresponding to duplicate sample number 3188 (RPD=75%). Since the above six data pairs are outsidethe RPD requirements, these data have been qualified as "estimated" and were "J" coded.
Several XRF versus off-site laboratory samples have large contaminant concentration variances. Howeve?the R2 meets the requirements set forth in the site-specific QAPP (i.e., R2=greater than 0.49) for the dataset. Several of the lead concentration variances could be a result of lead paint chips that may haveinfluenced the sampling results. Sample pairs 2306 and 1616, 2320 and 1684, 2335 and 1828, 2350 and2075,2680 and 2398, 2693 and 2486, 3434 and2789, 3436 and 2811, 3447 and 2896, 3448 and 2906, 3458and 3044, 3486 and 3308, 3491 and 3402, 4074 and 3516, 4079 and 3547, 4087 and 3651, 4095 and3799,and 4100 and 3830 are foundation samples where lead paint chips may have affected the sampling resultsand caused lead concentration variances between the XRF and off-site laboratory results.
If you have any questions, please feel free to give me a call at (913) 663-2108.
Sincerely,
SVERDRUP ENVIRONMENTAL INC.
Todd Trometer, P.O.Project Manager
cc: 155-0250033.7
S:\SVE PROJ\000155\025\DATAVAL\DV083I99.WPD
Transformed Zinc Confirmatory vs XRF Results
4.0
3.5 -
3.0
2.5
3(A
U.XD)O
2.0 -
1.5 -
1.0
0.5 -
y = 0.9078X + 0.2871
R2 = 0.877
0.0
0.0 0.5 1.0 1.5 2.0 2.5
Log Confirmatory Results
3.0 3.5 4.0
Transformed Lead Confirmatory Results vs XRF Results
4.5 n
4.0
3.5 -
3.0 -
3U0)
LL
XO)o
2-0 4
1.5 -
y = 0.6398x +0.9141
R2 = 0.7618
1.0 -
0.5 -
0.0
0.0 0.5 1.0 1.5 2.0 2.5 3.0
Log Confirmatory Result
3.5 4.0 4.5 5.0
Linear Regression ResultsLead Units mg/KgAugust 26, 1999
POP SampleNo.0053100572007180088400890009670098501003010600106701082011000111701120011280113501144011600118101184011890122701265012820128801315013340134701362013670138202294022950229602297022980229902299023000230102302023030230502306023070230802309023100231102312023130231402315
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Linear Regression ResultsLead Units mg/KgAugust 26, 1999
PDF SampleNo.0231602317023180231902320023210232202323023240232502326023270232802329023300233102332023330233402335023360233702338023390234002341023420234302344023450234602347023480234902350023510235202353023550267202673026740267502676026770267802679026800268102682026830268402685
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Linear Regression ResultsLead Units mg/KgAugust 26, 1999
PDF SampleNo.0268602687026880268902690026910269202693026940269502696026970269802699027000270102702027030270402705027060270702799028000280102802028030280402805034330343403435034360343703438034390344003441034420344303444034450344603447034480344903450034510345203453034540345503456
s:\sve_proj\000155\025\data val\lin082699\Lead Page 3 of 5
Linear Regression ResultsLead Units mg/KgAugust 26, 1999
PDF SampleNo.0345703458034590346003461034620346303464034650346603467034680346903470034710347203473034740347503476034770347803479034800348103482034830348403485034860348703488034890349003491034920401304072040730407404075040790408004081040820408304085040860408704088040890409004091
s:\sve_proj\000155\025Wata val\lin082699\Lead Page 4 of 5
Linear Regression ResultsLead Units mg/KgAugust 26, 1999
PDF SampleNo.04092040930409404095040960409704098040990410004101041020410304104041050410604107041080410904110041110411204113049190492004921049220492304924049260492704928049290493004938
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Linear Regression ResultsZinc Units mg/KgAugust 26,1999
POP SampleNo.0231602317023180231902320023210232202323023240232502326023270232802329023300233102332023330233402335023360233702338023390234002341023420234302344023450234602347023480234902350023510235202353023550267202673026740267502676026770267802679026800268102682026830268402685
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Linear Regression ResultsZinc Units mg/KgAugust 26, 1999
POP SampleNo.0268602687026880268902690026910269202693026940269502696026970269802699027000270102702027030270402705027060270702799028000280102802028030280402805034330343403435034360343703438034390344003441034420344303444034450344603447034480344903450034510345203453034540345503456
POP ZincResults210.0300.051.0110.0250.0720.02100.01200.0270.0300.0290.093.0130.069.0380.0350.0250.0130.0120.0240.0170.094.0110.0190.0220.0100.0140.0110.0230.0400.0430.0300.0800.0350.0240.0840.069.0
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Linear Regression ResultsZinc Units mg/KgAugust 26, 1999
PDF SampleNo.0345703458034590346003461034620346303464034650346603467034680346903470034710347203473034740347503476034770347803479034800348103482034830348403485034860348703488034890349003491034920401304072040730407404075040790408004081040820408304085040860408704088040890409004091
POP ZincResults2000.01200.0150.0100.0410.0540.0390.0300.0310.0920.0110.0170.0710.0400.0240.0440.0480.0500.0150.0110.0200.0300.0150.0110.0300.078.0730.0120.0320.0480.0210.0420.0250.0430.0900.0270.0420.088.0370.0610.0390.0230.0240.0260.0140.0600.0350.0570.0760.0270.0200.0410.0520.0
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LEAD: Relative Percent Difference (RPD) Calculations for Primary vs. Duplicate SamplesXRF Results from Residential Areas in Omaha, Nebraska and Council Bluffs, Iowa
Units mg/Kg
Street Address21 02 South 8th Street1228 South 10th Street5223 Grand1458 South 11th1458 South 11th261 3 Avenue G2739 Avenue D241 2 Avenue H2413Blondo2413Blondo2502 Burdette261 0 Patrick261 4 Patrick2436 Parker2436 Parker2508 Parker2428 Seward2522 Erskine2527 Blondo2527 Blondo2527 Blondo2116 Binney2525 Maple2531 Maple2512Corby2512Corby2130 Binney Street2515 Binney Street2519 Binney Street221 6 N. 25th Street221 6 N. 25th Street2906 N. 25th Street2611 Parker2416 Binney1912 North 26th Street271 5 North 26th2620 Grant1775 South 9th281 6 North 26th131 5 South 10th923 South 8th371 9 Mason3719 Mason525 South 31st Avenue2540 Avenue D2431 Avenue D2546 Avenue G2716 Avenue G1013Castelar833 South 41st91 2 South 41st1020 South 41st1020 South 41st1022 South 41st Street916 South 41st
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LEAD: Relative Percent Difference (RPD) Calculations for Primary vs. Duplicate SamplesXRF Results from Residential Areas In Omaha, Nebraska and Council Bluffs, Iowa
Units mg/Kg
Street Address621 South 32nd Avenue101 8 South 40th101 8 South 40th1 006 South 40th1001 South 41st1001 South 41st4345 Mayberry4345 Mayberry4320 Marcy4320 Marcy4227 Mayberry4340 Mayberry4301 Barker4301 Barker431 7 Barker3710 Mason21 23 Locust Street221 6 Maple St.221 6 Maple St.2120 Binney1419Cady1421 Cady1421 Cady1911 Lothrop1922 Loth rop21 24 Maple1604 Willis3410 North 16th3410 North 16th181 6 Willis1608 Lake1608 Lake1612LakeSt1817Corby1817Corby201 2 Locust21 20 Wirt2215 Binney2215 Binney2211 Locust221 1 Locust2202 Pinkney201 2 Emmet2003 Pinkney2003 Pinkney1821 Spencer1821 Spencer21 15 Pinkney1625 Pinkney1625 Pinkney1907 Spencer1814 Pinkney1484 Pinkney1 473 Emmet1 473 Emmet
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LEAD: Relative Percent Difference (RPD) Calculations for Primary vs. Duplicate SamplesXRF Results from Residential Areas In Omaha, Nebraska and Council Bluffs, Iowa
Units mg/Kg
Street Address2224 Evans2101 Evans1 620 Evans1 620 Evans2023 Spencer1807Corby21 18 Evans261 2 North 15th Street261 2 North 15th StreetStreet2201 Locust2531 Florence2251 Florence2088 Parker Circle2088 Parker Circle251 4 North 17th Street1619 Pinkney2197 Parker Circle21 92 Parker Circle2192 Parker Circle1619 Emmet3608 North 21 st Street2022 North 18th Street625 Pierce625 Pierce1 21 3 Pierce713 Williams620 Williams41 6 Williams610 Hickory610 Hickory814 Hickory707 Hickory813 Frances813 Frances625 Dorcas708 Dorcas715 Dorcas101 3 Hickory1123Castelar1123Castelar1210Castelar1006 Arbor822 Bancroft1402 Park Wild1402 Park Wild1230 Park Wild1230 Park Wild1254 Park Wild81 4 Forest81 4 Forest1126 Frederick151 7 Park Wild191 4 South 16th Street2302 South 6th Street
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LEAD: Relative Percent Difference (RPD) Calculations for Primary vs. Duplicate SamplesXRF Results from Residential Areas in Omaha, Nebraska and Council Bluffs, Iowa
"U" indicates a non-detect at level presented in "Result" column"J" indicates estimated concentration
"UJ" indicates an estimated non-detect analyte concentration
"NA" indicates not applicable
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ZINC: Relative Percent Difference (RPD) Calculations for Primary vs. Duplicate SamplesXRF Results from Residential Areas in Omaha, Nebraska and Council Bluffs, Iowa
Units mg/Kg
Street Address21 02 South 8th Street1228 South 10th Street5223 Grand1458 South 11th1458 South 11th261 3 Avenue G2739 Avenue D241 2 Avenue H241 3 Blondo2413Blondo2502 Burdette2610 Patrick261 4 Patrick2436 Parker2436 Parker2508 Parker2428 Seward2522 Erskine2527 Blondo2527 Blondo2527 Blondo2116 Binney2525 Maple2531 Maple2512Corby2512Corby2130 Binney Street251 5 Binney Street251 9 Binney Street221 6 N. 25th Street221 6 N. 25th Street2906 N. 25th Street2611 Parker2416 Binney1 91 2 North 26th Street271 5 North 26th2620 Grant1775 South 9th281 6 North 26th131 5 South 10th923 South 8th371 9 Mason3719 Mason525 South 31st Avenue2540 Avenue D2431 Avenue D2546 Avenue G271 6 Avenue G1013Castelar833 South 4 1st91 2 South 41st1020 South 41st1020 South 41st1022 South 41st Street
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ZINC: Relative Percent Difference (RPD) Calculations for Primary vs. Duplicate SamplesXRF Results from Residential Areas in Omaha, Nebraska and Council Bluffs, Iowa
Units mg/Kg
Street Address916 South 41st621 South 32nd Avenue101 8 South 40th101 8 South 40th1006 South 40th1001 South 41st1001 South 41st4345 Mayberry4345 Mayberry4320 Marcy4320 Marcy4227 Mayberry4340 Mayberry4301 Barker4301 Barker431 7 Barker3710 Mason21 23 Locust Street221 6 Maple St.221 6 Maple St.2120 Binney1419Cady1421 Cady1421 Cady1911 Lothrop1922 Loth rop21 24 Maple1604 Willis3410 North 16th3410 North 16th181 6 Willis1608 Lake1608 Lake161 2 Lake St.1817Corby1817Corby201 2 Locust2120Wirt2215 Binney2215 Binney2211 Locust2211 Locust2202 Pinkney201 2 Emmet2003 Pinkney2003 Pinkney1821 Spencer1821 Spencer2115 Pinkney1625 Pinkney1625 Pinkney1907 Spencer1814 Pinkney1484 Pinkney
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ZINC: Relative Percent Difference (RPD) Calculations for Primary vs. Duplicate SamplesXRF Results from Residential Areas In Omaha, Nebraska and Council Bluffs, Iowa
Units mg/Kg
Street Address1473 Emmet1473 Emmet2224 Evans2101 Evans1 620 Evans1620 Evans2023 Spencer1807Corby21 18 Evans261 2 North 15th Street2612 North 15th StreetStreet2201 Locust2531 Florence2251 Florence2088 Parker Circle2088 Parker Circle251 4 North 17th Street1619 Pinkney21 97 Parker Circle2192 Parker Circle2192 Parker Circle161 9 Emmet3608 North 21st Street2022 North 18th Street625 Pierce625 Pierce1213 Pierce713 Williams620 Williams41 6 Williams610 Hickory610 Hickory814 Hickory707 Hickory813 Frances813 Frances625 Dorcas708 Dorcas715 Dorcas101 3 Hickory1123Castelar1123Castelar1210Castelar1006 Arbor822 Bancroft1402 Park Wild1402 Park Wild1 230 Park Wild1 230 Park Wild1254 Park Wild814 Forest814 Forest11 26 Frederick
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ZINC: Relative Percent Difference (RPO) Calculations for Primary vs. Duplicate SamplesXRF Results from Residential Areas In Omaha, Nebraska and Council Bluffs, Iowa
Units mg/Kg
Street Address151 7 Park Wild191 4 South 16th Street2302 South 6th Street2302 South 6th Street251 8 South 6th Street251 8 South 6th Street2410 South 6th1721 South 7th2025 South 6th2025 South 6th2021 South 6th1417 South 8th1713 South 8th1425 South 8th2002 South 7th Street2002 South 7th Street1314 South 9th1704 South 9th1716 South 9th301 1 South 9th301 1 South 9th231 5 South 8th1447 South 12th2003 South 8th2003 South 8th1215 South 10th911 Pierce911 Pierce720 Pierce2307 South 8th1953 South 11th1953 South 11th1938 South 11th Street1434 South 11th1222 South 12th131 7 South 12th131 3 South 12th131 3 South 12th1311 South 12th1 709 South 7th1450 South 12th2521 South 6th2521 South 6th1452 South 12th1711 South 12th141 3 South 5th141 3 South 5th1721 South 12th2702 South 12th2748 South 12th
"U" indicates a non-detect at level presented in "Result1 column"J" indicates estimated concentration"UJ" indicates an estimated non-detect analyte concentration"NA" indicates not applicable
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ARSENIC: Relative Percent Difference (RPD) Calculations for Primary vs. Duplicate SamplesXRF Results from Residential Areas In Omaha, Nebraska and Council Bluffs, Iowa
Units mg/Kg
Street Address21 02 South 8th Street1228 South 10th Street5223 Grand1458 South 11th1458 South 11th2613 Avenue G2739 Avenue D241 2 Avenue H2413Blondo2413Blondo2502 Burdette2610 Patrick261 4 Patrick2436 Parker2436 Parker2508 Parker2428 Seward2522 Erskine2527 Blondo2527 Blondo2527 Blondo2116 Binney2525 Maple2531 Maple2512Corby2512Corby2130 Binney Street2515 Binney Street2519 Binney Street221 6 N. 25th Street221 6 N. 25th Street2906 N. 25th Street261 1 Parker2416 Binney191 2 North 26th Street271 5 North 26th2620 Grant1775 South 9th281 6 North 26th131 5 South 10th923 South 8th3719 Mason3719 Mason525 South 31st Avenue2540 Avenue D2431 Avenue D2546 Avenue G271 6 Avenue G1013Castelar833 South 41st91 2 South 41st1020 South 41st1 020 South 41 st1022 South 41st Street91 6 South 41st
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ARSENIC: Relative Percent Difference (RPD) Calculations for Primary vs. Duplicate SamplesXRF Results from Residential Areas in Omaha, Nebraska and Council Bluffs, Iowa
Units mg/Kg
Street Address621 South 32nd Avenue1018South401h1 01 8 South 40th1 006 South 40th1001 South 41st1001 South 41st4345 Mayberry4345 Mayberry4320 Marcy4320 Marcy4227 Mayberry4340 Mayberry4301 Barker4301 Barker431 7 Barker3710 Mason2123 Locust Street221 6 Maple St.221 6 Maple St.2120 Binney1419Cady1421 Cady1421 Cady1911 Lothrop1922Lothrop21 24 Maple1604 Willis3410 North 16th3410 North 16th181 6 Willis1608 Lake1608 Lake1612LakeSt1817Corby1817Corby201 2 Locust2120Wirt2215 Binney221 5 Binney221 1 Locust2211 Locust2202 Pinkney2012 Emmet2003 Pinkney2003 Pinkney1821 Spencer1821 Spencer2115 Pinkney1625 Pinkney1625 Pinkney1907 Spencer1814 Pinkney1484 Pinkney1473 Emmet1 473 Emmet
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ARSENIC: Relative Percent Difference (RPD) Calculations for Primary vs. Duplicate SamplesXRF Results from Residential Areas in Omaha, Nebraska and Council Bluffs, Iowa
Units mg/Kg
Street Address2224 Evans2101 Evans1 620 Evans1620 Evans2023 Spencer1807Corby2118 Evans261 2 North 15th Street261 2 North 15th StreetStreet2201 Locust2531 Florence2251 Florence2088 Parker Circle2088 Parker Circle251 4 North 17th Street1619 Pinkney21 97 Parker Circle2192 Parker Circle21 92 Parker Circle1619 Emmet3608 North 21st Street2022 North 18th Street625 Pierce625 Pierce1 21 3 Pierce713 Williams620 Williams416 Williams610 Hickory610 Hickory81 4 Hickory707 Hickory813 Frances813 Frances625 Dorcas708 Dorcas715 Dorcas101 3 Hickory1123Castelar1123Castelar1210Castelar1006 Arbor822 Bancroft1402 Park Wild1402 Park Wild1230 Park Wild1230 Park Wild1254 Park Wild81 4 Forest81 4 Forest1126 Frederick151 7 Park Wild191 4 South 16th Street2302 South 6th Street
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ARSENIC: Relative Percent Difference (RPD) Calculations for Primary vs. Duplicate SamplesXRF Results from Residential Areas in Omaha, Nebraska and Council Bluffs, Iowa
Units mg/Kg
Street Address2302 South 6th Street251 8 South 6th Street251 8 South 6th Street2410 South 6th1721 South 7th2025 South 6th2025 South 6th2021 South 6th141 7 South 8th1 71 3 South 8th1 425 South 8th2002 South 7th Street2002 South 7th Street131 4 South 9th1704 South 9th171 6 South 9th301 1 South 9th301 1 South 9th231 5 South 8th1447 South 12th2003 South 8th2003 South 8th1215 South 10th911 Pierce911 Pierce720 Pierce2307 South 8th1953 South 11th1953 South 11th1938 South 11th Street1434 South 11th1222 South 12th1317 South 12th131 3 South 12th1313 South 12th1311 South 12th1709 South 7th1450 South 12th2521 South 6th2521 South 6th1452 South 12th1711 South 12th141 3 South 5th141 3 South 5th1721 South 12th2702 South 12th2748 South 12th