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We present a budget and accounting of metals in and around star-forminggalaxies at $z\sim 0$. We combine empirically derived star formation historieswith updated supernova and AGB yields and rates to estimate the total mass ofmetals produced by galaxies with present-day stellar mass of$10^{9.3}$--$10^{11.6} M_{\odot}$. On the accounting side of the ledger, weshow that a surprisingly constant 20--25% mass fraction of produced metalsremain in galaxies' stars, interstellar gas and interstellar dust, with littledependence of this fraction on the galaxy stellar mass (omitting those metalsimmediately locked up in remnants). Thus, the bulk of metals are outside ofgalaxies, produced in the progenitors of today's $L^*$ galaxies. The COS-Halossurvey is uniquely able to measure the mass of metals in the circumgalacticmedium (to impact parameters of $< 150$ kpc) of low-redshift $\sim L^*$galaxies. Using these data, we map the distribution of CGM metals as traced byboth the highly ionized OVI ion and a suite of low-ionization species; combinedwith constraints on circumgalactic dust and hotter X-ray emitting gas out tosimilar impact parameters, we show that $\sim 40$% of metals produced by$M_{\star}\sim 10^{10}M_{\odot}$ galaxies can be easily accounted for out to150 kpc. With the current data, we cannot rule out a constant mass of metalswithin this fixed physical radius. This census provides a crucial boundarycondition for the eventual fate of metals in galaxy evolution models.

A Budget and Accounting of Metals at z~0: Results from the COS-Halos Survey