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6, How do constituents get into our water?
<br />Drinking ware r (raft water asd bottled vvarer) comes
<br />front river sakes, streams ponds, reservoirs, springy
<br />and wells. As aaria a navels over the su. -face of the And
<br />of through the g: ound, it dissolves naturally occur rang
<br />minerals and, In some cases, radioartrve malaria;, and
<br />can pick up at resulting from the presence of
<br />animals on unran activity n,, most likely source for
<br />each consatueat is Its ted n the last column of the table.
<br />Contaminans that rnav ife Pasant In soh IfCe water include
<br />• Micobial contaminants such as viruses and baaena,
<br />tfat may col lie fro ^n sewage treatment Plans, septic
<br />systems, agricultural livestock operation „ and vviIdIife.
<br />Inorganic contaminants, such as salts and metals,
<br />that can be naturally - occuring or result from urban
<br />srormwater runoff, ldustral or domesm ,castccvatLr
<br />discharges cil and gas production mnh g or far nbig.
<br />Pesticides and herbicides, that may come from a
<br />variety of SOol ces such ac agriculture tirban srormwater
<br />runoff, and residential uses.
<br />- Organic chemical contaminants, i.aclading synthetic
<br />and volatile organic the meals, that are byproducts of
<br />industrial prc esses anc urrroleuni produrion acid can
<br />also come h< ran gas star ans, urban s-o, mwater runoff,
<br />,gri Lulu ural apnl cation, a P cot;. system,_
<br />• Radioactive contaminants, that can be naturally
<br />occuring or be the result of oil and gas productron and
<br />mining a( riches.
<br />7. Are, there any potential sources of
<br />contamination in our system?
<br />An assessment of the drinkingwater wells for [he
<br />C ny of San-.a Ala was Cora Meted in December 2015.
<br />Santa Ana's wells are considered most vulnerable to
<br />the following acrivties associated with contosnlnants
<br />detected in it water si pply. historic agricultural
<br />activities, golf courses, aPd application of fertilizers.
<br />Out wells are considered most vu nerable to r ^e
<br />to lover rig activirirs net associated -IitI deter Led
<br />oontaminaces cnemlcal /Petroleum ppelnes, chemical,
<br />petroletnn pi,ressing /svoros, dry deanefa gas stations,
<br />u,k /scrap /aldage yard metal pIaLi ngriinlsh l rig/
<br />roar i cation plas it, s /syn the Uc Is p TOO uc e is ar !if sewer
<br />cone¢ ion sysi ems-
<br />roVVD ls,nc v,red ev DDo,' i ran o nduc[ m f Ea I Source
<br />ts atcr asse .n 1 Pet, which 1 c Ii 10 1) upd 11 t r, f through
<br />War 0I 11i” 1 ,aI I t+ns sL rvr Is e Fry i Iva year Watershed
<br />,arntxvsu r r y examinee ocsi blesoiu s - afafiii l ee
<br />IA ,t ^r,ant m o! and rer ore mero Iowa tP berrer
<br />protect the se source c,atei .The most,ecent
<br />says for 111 WD's ourcev atc,a arethe Cus hif La do
<br />-, ive a;arer, ed Sanita ry 1,Lj r-"- 20101J pd ate and
<br />the ',fit I P WaI t rof eat VVa srshen Sa (I Ira 2 Surrey
<br />-?Of I Update.
<br />Source ware sued by MIND — the Colo i ado freer
<br />and State water n a ect- each have dl`.ei ent water
<br />quality challenges. both are exposed to srormwater
<br />runoff. recrean.nal activltr ,astewater
<br />discharges, v ila Mfr fires, in,] otf.er ,neater shed -
<br />i c acco facmi C Aar could fill water qualij, .
<br />e+tr -,em To remove spa ifi...o. lamina ru can be
<br />more e,oencive than measures to protect ,retei
<br />at ha , a;rce -hick is ,,,,fly Cal and other,,,aer
<br />.gee ies in —c resources to srJpport Improved
<br />vaieished p otection programs.
<br />Waterfrom , e Colorado si I,r te ccrsdef to be
<br />MOST ru i nerrole to ccnraninn. Mr from recreatioa,
<br />Lit 3,,IVSmrrr ✓,Ater runoff, in rcring urbanaation
<br />The watersl ieci, and wasterv-. ter. Water supplies
<br />lion, [,r . California n,, most vulnerable to
<br />contamination frum urbaMSrorr water runoff,
<br />✓„ldllfe, agriculture, recreation a,advva le✓vater.
<br />,f copy of the h,usil scent summary of rah se source
<br />water assess ants can be obcained by c fl ine our
<br />office at 7'1 A 6,C/ 3320.
<br />a]
<br />EXHIBIT 6
<br />75C -75
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