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3 <br />No other constituents flagged above the NPL at well 21-3U during the current <br />monitoring period. Observations of dissolved boron at well 21-3U will continue <br />on a quarterly frequency. <br />One additional data point flagged in upper aquifer well 21-3A (A Groove) for <br />dissolved boron during the report period. The NPL indicator value for dissolved <br />boron at well 21-3A is calculated at 5.68 mg/L. The value reported for dissolved <br />boron at well 21-3A during the current reporting period is 5.9 mg/L, a difference <br />of 0.22 mg/L. The baseline mean value for dissolved boron is 4.33 mg/L <br />computed from 15 baseline samples. The operational mean value determined <br />from 65 total samples is 4.46 mg/L. The maximum value observed in the <br />baseline data period was 5.8 mg/L. No other constituents flagged above the NPL <br />at well 21-3A during the reporting period. Observations of dissolved boron at <br />well 21-3A will continue on a quarterly frequency. <br />Well 21-3A (A Groove at Point of Compliance) <br />Water Elevation and Boron Concentration <br />7.00 6095 <br />o ; Numeric Protective Level = 5.68 mglL ~ 6094 <br />~ ~ ~ ~' 6093 <br />6.00 ~~' ~ ~ ~ ~ ~ <br />o ao o„ o ,~ ~ ~ ~ 6092 <br />5.00 _.,,, ~~ cO o °of' O °v ~ o v~-~` ~r „-, 6091 <br />E ~,~~.°'.' ~~~ o ' v ~f'~ 6090 <br />. ~{* 6089 <br />0 4.00 <br />6088 <br />00 ~ ~ ~ 6087 <br />~ 3.00 ~ 6086 <br />N ~ ~ 6085 <br />~ 2.00 ~ 6084 <br />p <br />Baseline ~ Operational 'Temporary 6083 <br />1.00 ;Suspension 6082 <br />Agriculture Standard =0.75 mg/L 6081 <br />0.00. ~ _ - -- - - .... _ ~ 6080 <br />O~ 6) O O O N N N ('~ M t7 V V V u7 cD ~ 00 <br />in S o S 8 0 0 8 0 o S g o g g S S a S S <br />N N N N N N N N N N N N N N N N N N N <br />N ~ CAS' n V c0 ch N cD N ~ (~ (~ ~ CO n c~ C~ <br />N N r r r ~ ~ r r r r r N .- ~- <br />h ~ M n ~ M h M ~ r- M ~ ~ M ~ ~ M N M M <br />Date <br />~. Water Devation -o--Boron, dissolved Boron Numeric Protective Level <br />